Document and Entity Information - shares	6 Months Ended
Document and Entity Information - shares	Jun. 30, 2018	Aug. 03, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	Weatherford International plc
Entity Central Index Key	0001603923
Current Fiscal Year End Date	--06-30
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		997,083,591
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2018

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues:
Products	$ 462	$ 488	$ 963	$ 999
Services	986	875	1,908	1,750
Total Revenues	1,448	1,363	2,871	2,749
Costs and Expenses:
Cost of Products	414	473	879	959
Cost of Services	729	716	1,409	1,436
Research and Development	37	36	75	75
Selling, General and Administrative Attributable to Segments	199	211	399	441
Corporate General and Administrative	34	33	70	66
Long-Lived Asset Impairments, Asset Write-Downs and Other	70	8	88	25
Restructuring and Transformation Charges	38	31	63	106
Total Costs and Expenses	1,521	1,508	2,983	3,108
Operating Income (Loss)	(73)	(145)	(112)	(359)
Other Income (Expense):
Interest Expense, Net	(152)	(138)	(301)	(279)
Warrant Fair Value Adjustment	10	127	56	65
Bond Tender and Call Premium	0	0	(34)	0
Currency Devaluation Charges	(11)	0	(37)	0
Other Income (Expense), Net	(7)	8	(15)	15
Loss Before Income Taxes	(233)	(148)	(443)	(558)
Income Tax Provision	(26)	(17)	(58)	(50)
Net Loss	(259)	(165)	(501)	(608)
Net Income Attributable to Noncontrolling Interests	5	6	8	11
Net Income (Loss) Attributable to Weatherford	$ (264)	$ (171)	$ (509)	$ (619)
Loss Per Share Attributable to Weatherford:
Earnings Per Share, Basic and Diluted	$ (0.26)	$ (0.17)	$ (0.51)	$ (0.63)
Weighted Average Shares Outstanding:
Weighted Average Number of Shares Outstanding, Basic and Diluted	997	990	995	989

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net Loss	$ (259)	$ (165)	$ (501)	$ (608)
Other Comprehensive Income (Loss), Net of Tax:
Currency Translation Adjustments	(166)	11	(161)	74
Defined Benefit Pension Activity	1	(21)	1	(41)
Other Comprehensive Income (Loss)	(165)	(10)	(160)	33
Comprehensive Loss	(424)	(175)	(661)	(575)
Comprehensive Income Attributable to Noncontrolling Interests	5	6	8	11
Comprehensive Loss Attributable to Weatherford	$ (429)	$ (181)	$ (669)	$ (586)

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Current Assets:
Cash and Cash Equivalents	$ 415	$ 613
Accounts Receivable, Net of Allowance for Uncollectible Accounts of $141 in 2018 and $156 in 2017	1,167	1,103
Inventories, Net	1,143	1,234
Prepaid Expenses	137	237
Other Current Assets	342	332
Assets Held for Sale	489	359
Total Current Assets	3,693	3,878
Property, Plant and Equipment, Net of Accumulated Depreciation of $6,965 in 2018 and $7,462 in 2017	2,273	2,708
Goodwill	2,621	2,727
Other Intangible Assets, Net of Accumulated Amortization of $887 in 2018 and $870 in 2017	216	213
Other Non-Current Assets	176	221
Total Assets	8,979	9,747
Current Liabilities:
Short-term Borrowings and Current Portion of Long-term Debt	295	148
Accounts Payable	754	856
Accrued Salaries and Benefits	272	308
Income Taxes Payable	211	228
Other Current Liabilities	668	690
Total Current Liabilities	2,200	2,230
Long-term Debt	7,634	7,541
Other Non-Current Liabilities	457	547
Total Liabilities	10,291	10,318
Shareholders’ (Deficiency) Equity:
Shares - Par Value $0.001; Authorized 1,356 shares, Issued and Outstanding 997 shares at June 30, 2018 and 993 shares at December 31, 2017	1	1
Capital in Excess of Par Value	6,688	6,655
Retained Deficit	(6,369)	(5,763)
Accumulated Other Comprehensive Loss	(1,679)	(1,519)
Weatherford Shareholders’ Deficiency	(1,359)	(626)
Noncontrolling Interests	47	55
Total Shareholders’ Deficiency	(1,312)	(571)
Total Liabilities and Shareholders’ Deficiency	$ 8,979	$ 9,747

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Current Assets:
Allowance for Uncollectible Accounts	$ 141	$ 156
Noncurrent Assets:
Accumulated Depreciation of Property, Plant and Equipment	6,965	7,462
Accumulated Amortization of Other Intangible Assets	$ 887	$ 870
Shareholders’ Equity:
Common Shares, Par Value (in USD)	$ 0.001	$ 0.001
Common Shares, Authorized (in shares)	1,356,000,000	1,356,000,000
Common Shares, Conditionally Authorized (in shares)	0	0
Common Shares, Issued (in shares)	997,000,000	993,000,000
Common Stock, Outstanding (in shares)	997,000,000	993,000,000
Treasury Shares, at cost (in shares)	0	0

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Increase (Decrease) in Obligation, Pension Benefits	$ 0	$ (41)
Cash Flows from Operating Activities:
Net Loss	(501)	(608)
Adjustments to Reconcile Net Loss to Net Cash Provided by (Used in) Operating Activities:
Depreciation and Amortization	291	412
Share-based compensation	27	41
Impairment of Long-Lived Assets to be Disposed of	92	0
Inventory Write-down	64	35
Restructuring Costs and Asset Impairment Charges	17	34
Provision for Doubtful Accounts	(14)	0
Bond Tender and Call Premium	(34)	0
Deferred Income Tax Provision (Benefit)	(5)	4
Currency Devaluation Charges	37	0
Warrant Fair Value Adjustment	(56)	(65)
Other, Net	(26)	72
Change in Operating Assets and Liabilities, Net of Effect of Businesses Acquired:
Accounts Receivable	(78)	(12)
Inventories	(7)	(47)
Other Current Assets	(35)	69
Accounts Payable	(81)	(16)
Accrued Litigation and Settlements	(23)	(62)
Other Current Liabilities	(28)	(16)
Other, Net	(23)	(41)
Net Cash Used in Operating Activities	(315)	(241)
Cash Flows From Investing Activities:
Capital Expenditures for Property, Plant and Equipment	(68)	(82)
Capital Expenditures for and Acquisition of Assets Held for Sale	(18)	(243)
Acquisitions of Businesses, Net of Cash Acquired	4	0
Acquisition of Intellectual Property	(7)	(9)
Proceeds from Sale of Assets	50	25
Proceeds (Payments) from Sale of Businesses and Equity Investment, Net	25	(1)
Payments for (Proceeds from) Other Investing Activities	0	5
Net Cash Used in Investing Activities	(14)	(315)
Cash Flows From Financing Activities:
Borrowings of Long-term Debt	588	251
Repayments of Long-term Debt	(455)	(36)
Borrowings (Repayments) of Short-term Debt, Net	87	(96)
Bond Tender Premium	(34)	0
Other Financing Activities	(14)	(20)
Net Cash Provided by Financing Activities	172	99
Effect of Exchange Rate Changes on Cash and Cash Equivalents	(41)	4
Net Decrease in Cash and Cash Equivalents	(198)	(453)
Cash and Cash Equivalents at Beginning of Period	613	1,037
Cash and Cash Equivalents at End of Period	415	584
Supplemental Cash Flow Information:
Interest Paid	273	251
Income Taxes Paid, Net of Refunds	66	$ 47
Land Drilling Rigs
Adjustments to Reconcile Net Loss to Net Cash Provided by (Used in) Operating Activities:
Impairment of Long-Lived Assets to be Disposed of	$ 82

General	6 Months Ended
General	Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
General	General The accompanying unaudited Condensed Consolidated Financial Statements of Weatherford International plc (the “Company,” “Weatherford” or “Weatherford Ireland”) are prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) and include all adjustments (consisting of normal recurring adjustments) which, in our opinion, are considered necessary to present fairly our Condensed Consolidated Balance Sheets at June 30, 2018 and December 31, 2017, Condensed Consolidated Statements of Operations and Condensed Consolidated Statements of Comprehensive Loss for the three and six months ended June 30, 2018 and 2017 and Condensed Consolidated Statements of Cash Flows for the six months ended June 30, 2018 and 2017. When using phrases such as “we,” “us,” and “our,” the intent is to refer to Weatherford International plc, a public limited company organized under the law of Ireland, and its subsidiaries as a whole or on a regional basis, depending on the context in which the statements are made. Although we believe the disclosures in these financial statements are adequate, certain information relating to our organization and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted in this Form 10-Q pursuant to U.S. Securities and Exchange Commission (“SEC”) rules and regulations. These financial statements should be read in conjunction with the audited Consolidated Financial Statements for the year ended December 31, 2017 included in our Annual Report on Form 10-K. The results of operations for the three and six months ended June 30, 2018 are not necessarily indicative of the results expected for the year ending December 31, 2018. Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amount of assets and liabilities at the date of the financial statements, the reported amounts of revenues and expenses during the reporting period, and disclosure of contingent assets and liabilities. On an on-going basis, we evaluate our estimates and assumptions, including those related to uncollectible accounts receivable, lower of cost or net realizable value of inventories, assets held for sale, derivative financial instruments, intangible assets and goodwill, property, plant and equipment (“PP&E”), income taxes, accounting for long-term contracts, self-insurance, foreign currency exchange rates, pension and post-retirement benefit plans, disputes, litigation, contingencies and share-based compensation. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results could differ from those estimates. Principles of Consolidation We consolidate all wholly-owned subsidiaries, controlled joint ventures and variable interest entities where the Company has determined it is the primary beneficiary. Investments in affiliates in which we exercise significant influence over operating and financial policies are accounted for using the equity method. All material intercompany accounts and transactions have been eliminated in consolidation. Reclassifications Certain reclassifications of the financial statements and accompanying footnotes for the three and six months ended June 30, 2017 have been made to conform to the presentation for the three and six months ended June 30, 2018. See “Note 2 – New Accounting Pronouncements” for additional details regarding accounting changes impacting the Condensed Consolidated Financial Statements. Currency Devaluation Charges For the second quarter and the first six months ended June 30, 2018, we recognized currency devaluation charges of $11 million and $37 million respectively. Devaluation of the Angolan kwanza totaling $11 million and $35 million in the second quarter and the first six months ended June 30, 2018, respectively, were substantially all of the charges recorded. The devaluation of the Angolan kwanza was due to a change in Angolan central bank policy in January 2018. For the six months ended June 30, 2017, we had no currency devaluation charges. Currency devaluation charges are included in current earnings in “Currency Devaluation Charges” on the accompanying Condensed Consolidated Statements of Operations.

New Accounting Pronouncements

6 Months Ended

Jun. 30, 2018

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

New Accounting Pronouncements

Accounting Changes

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606), which replaced most existing revenue recognition guidance in U.S. GAAP. We adopted the new guidance and all of the related amendments, collectively Topic 606, using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. We recognized the cumulative effect of initially applying the new guidance as an adjustment to the opening balance of retained earnings as of January 1, 2018. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods. Net income for 2017 and shareholders’ equity as of December 31, 2017 were not affected by the adoption of the new guidance. The impact of the adoption of the new guidance is immaterial to our consolidated net loss.

The primary impact on adopting Topic 606 on our Condensed Consolidated Financial Statements is in our Well Construction product line, where we receive customer payments related to the demobilization of drilling equipment and crew. Under the adoption of Topic 606, we now recognize revenue on demobilization equally over the term of the contract, subject to any constraint as discussed in “Note 3 – Revenues” to our Condensed Consolidated Financial Statements. Prior to the adoption of Topic 606, we recognized demobilization revenue once the service was completed. These changes did not have any impact on our Condensed Consolidated Statements of Cash Flows.

The cumulative effect of the changes made to our January 1, 2018 Condensed Consolidated Balance Sheet for the adoption of Topic 606, were as follows:



(Dollars in millions)	Balance at December 31, 2017			Adjustments Due to Topic 606		Balance at January 1, 2018
Assets and Liabilities:
Other Current Assets	$	332		$	10	$	342
Other Current Liabilities	690			2		692

Shareholders’ Equity:
Retained Deficit	(5,763		)	8		(5,755		)

The impact of adopting Topic 606 on the Company’s Condensed Consolidated Financial Statements for the first six months ended June 30, 2018 was less than $2 million.

In March 2017, the Financial Accounting Standards Board (“FASB”) issued ASU 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, which amends the presentation of net periodic pension and postretirement benefit costs (“net benefit cost”). The service cost component of net benefit cost will be bifurcated and presented with other employee compensation costs, while other components of net benefit costs are presented separately outside of income from operations. We adopted ASU 2017-07 in the first quarter of 2018 on a retrospective basis which resulted in the reclassification $18 million and $36 million of income from “Total Costs and Expenses” primarily under the caption of “Long-Lived Asset Impairments, Asset Write-Downs and Other” to “Other Income (Expense), net” on our Condensed Consolidated Statements of Operations for the second quarter and the first six months of 2017, respectively.

In October 2016, the FASB issued ASU 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory, which eliminates a current exception in U.S. GAAP to the recognition of the income tax effects of temporary differences that result from intra-entity transfers of non-inventory assets. We adopted ASU 2016-16 in the first quarter of 2018 on a modified retrospective basis. The impact that this new standard has on our Consolidated Financial Statements is a reversal of $105 million of prepaid taxes through retained earnings. Prospectively, any taxes accrued that result from the intra-entity transfers of non-inventory assets will be recognized in current tax expense.

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments, which reduces diversity in practice as to how certain transactions are classified in the statement of cash flows. We adopted ASU 2016-15 in the first quarter of 2018 on a retrospective basis and the adoption of this ASU has no material impact on our Condensed Consolidated Statement of Cash Flows.

Accounting Standards Issued Not Yet Adopted

In February 2018, the FASB issued ASU 2018-02, Income Statement-Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which permits a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act. The standard is required to be applied in the period of adoption or on a retrospective basis to each period affected, and will be effective beginning in the first quarter of 2019, although early adoption is permitted. We are evaluating the impact that this new standard will have on our Consolidated Financial Statements.

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which requires a lessee to recognize a lease asset and lease liability for most leases, including those classified as operating leases under existing U.S. GAAP. The ASU also changes the definition of a lease and requires expanded quantitative and qualitative disclosures for both lessees and lessors.

Under ASU 2016-02, and all the related amendments, we will revise our leasing policies to require most of the leases, where we are the lessee, to be recognized on the balance sheet as a lease asset and lease liability whereas currently we do not recognize operating leases on our balance sheet. Further, we will separate leases from other contracts where we are either the lessor or lessee when the rights conveyed under the contract indicate there is a lease, where we may not be required to do so under existing policies. While we cannot calculate the impact ASU 2016-02 will have on Weatherford’s financial statements, we anticipate that Weatherford’s assets and liabilities will increase by a significant amount. However, the ultimate impact of the standard will depend on the Company’s lease portfolio as of the date of adoption.

We are currently in the process of evaluating our existing lease portfolios, including accumulating all of the necessary information required to properly account for the leases under the new standard. Additionally, we are in the process of implementing a lease management system to assist in the accounting for leases and are evaluating additional changes to our processes and internal controls to ensure we meet the standard’s reporting and disclosure requirements.

This standard will be effective for us beginning in the first quarter of 2019. We do not anticipate adopting ASU 2016-02 early, which is permitted under the standard. ASU 2016-02 requires lessees and lessors to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective transition method but permits certain practical expedients to be applied, which may exclude certain leases that commenced before the effective date.

Revenues

6 Months Ended

Jun. 30, 2018

Revenue from Contract with Customer [Abstract]

Revenues

Revenue Recognition

The majority of our revenue is derived from short term contracts. We account for revenue in accordance with Topic 606, which we adopted on January 1, 2018, using the modified retrospective method. We recognized the cumulative effect of initially applying the new guidance as an adjustment to the opening balance of retained earnings. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods. See Note 2 – New Accounting Pronouncements for further discussion of the adoption, including the impact on our 2018 Condensed Consolidated Financial Statements.

Revenues are recognized when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services.

The following tables disaggregate our product and service revenues from contracts with customers by major product line and geographic region for the second quarter and the first six months ended June 30, 2018:



	Three Months Ended June 30, 2018
(Dollars in millions)	Western Hemisphere		Eastern Hemisphere		Total Excluding Rental Revenues		Rental Revenues		Total Revenues
Product Lines:

Production	$	308	$	86	$	394	$	—	$	394
Completions	148		155		303		—		303
Drilling and Evaluation	141		180		321		20		341
Well Construction	87		230		317		93		410
Total	$	684	$	651	$	1,335	$	113	$	1,448



	Six Months Ended June 30, 2018
(Dollars in millions)	Western Hemisphere		Eastern Hemisphere		Total Excluding Rental Revenues		Rental Revenues		Total Revenues
Product Lines:

Production	$	594	$	181	$	775	$	—	$	775
Completions	305		291		596		1		597
Drilling and Evaluation	297		374		671		28		699
Well Construction	188		446		634		166		800
Total	$	1,384	$	1,292	$	2,676	$	195	$	2,871



	Three Months Ended June 30, 2018		Six Months Ended June 30, 2018
(Dollars in millions)
Geographic Areas:

United States	$	346	$	691
Latin America	270		496
Canada	68		197
Western Hemisphere	684		1,384

Middle East & North Africa	356		719
Europe/Sub-Sahara Africa/Russia	219		441
Asia	76		132
Eastern Hemisphere	651		1,292

Total Product and Service Revenue before Rental Revenues	1,335		2,676
Rental Revenues	113		195
Total Revenues	$	1,448	$	2,871

Contract Balances

The timing of revenue recognition, billings and cash collections results in billed accounts receivable, unbilled receivables, contract assets, and customer advances and deposits (contract liabilities classified as deferred revenues) on the Condensed Consolidated Balance Sheets.

Receivables for products and services with customers, under Topic 606, are included in “Accounts Receivable, Net”, contract assets in “Other Current Assets” and contract liabilities in ”Other Current Liabilities” on our Condensed Consolidated Balance Sheets.

The following table provides information about receivables for product and services included in “Accounts Receivable, Net” at June 30, 2018 and January 1, 2018, respectively:

Consideration under certain contracts such as turnkey or lump sum contracts may be classified as contract assets as the invoicing occurs once the performance obligations have been satisfied while the customer simultaneously receives and consumes the benefits provided. We also have receivables for work completed but not billed in which the rights to consideration are conditional and would be classified as contract assets. These are primarily related to service contracts and are not material to our Condensed Consolidated Financial Statements. We may also have contract liabilities, and defer revenues for certain product sales that are not distinct from their installation.

We did not recognize any revenues during the second quarter and the first six months ended June 30, 2018 related to performance obligations satisfied prior to January 1, 2018.

Significant changes in the contract assets and liabilities balances during the period are as follows:



(Dollars in millions)	Contract Assets			Contract Liabilities
Balance, as of January 1, 2018	$	10		$	42
Revenue recognized that was included in the deferred revenue balance at the beginning of the period	—			(31		)
Increase due to cash received, excluding amount recognized as revenue during the period	—			63
Increase due to revenue recognized during the period but contingent on future performance	5			—
Transferred to receivables from contract assets recognized at the beginning of the period	(2		)	—
Balance, as of June 30, 2018	$	13		$	74

Performance Obligations

A performance obligation is a promise in a contract to transfer a distinct good or service to the customer, and is the unit of account in Topic 606. A contract’s transaction price is allocated to each distinct performance obligation and recognized as revenue when, or as, the performance obligation is satisfied.

Our principal business is to provide equipment and services to the oil and natural gas exploration and production industry, both on land and offshore, through our major product lines: Production, Completions, Drilling and Evaluation and Well Construction.

Generally, our revenue is recognized for services over time as the services are rendered and we primarily utilize an output method such as time elapsed or footage drilled which coincides with how customers receive the benefit. Both contract drilling and pipeline service revenue is contractual by nature and generally governed by day-rate based contracts. Revenue is recognized on product sales at a point in time when control passes and is generally upon delivery but is dependent on the terms of the contract.

Our services and products are generally sold based upon purchase orders, contracts or call-out work orders that include fixed per unit prices or variable consideration but do not generally include right of return provisions or other significant post-delivery obligations. We generally bill our sales of services and products upon completion of the performance obligation. Product sales are billed and recognized when control passes to the customer. Our products are produced in a standard manufacturing operation, even if produced to our customer’s specifications. Services are billed and recognized as revenue at the amount to which we have the right to invoice for services performed. Our payment terms vary by the type and location of our customer and the products or services offered. The term between invoicing and when payment is due is not significant. For certain products or services and customer types, we require payment before the products or services are delivered to the customer. We defer revenue recognition on such payments until the products or services are delivered to the customer.

From time to time, we may enter into bill and hold arrangements. When we enter into these arrangements, we determine if the customer has obtained control of the product by determining (a) the reason for the bill-and-hold arrangement; (b) whether the product is identified separately as belonging to the customer; (c) whether the product is ready for physical transfer to the customer; and (d) whether we are unable to utilize the product or direct it to another customer.

We account for individual products and services separately if they are distinct and the product or service is separately identifiable from other items in the contract and if a customer can benefit from it on its own or with other resources that are readily available to the customer. The consideration, including any discounts, is allocated between separate products and services based on their standalone selling prices. The standalone selling prices are determined based on the prices at which we separately sell our products and services. For items not sold separately (e.g. term software licenses in our Production product line), we estimate standalone selling prices using the adjusted market assessment approach.

Up-front payments for preparation and mobilization of equipment and personnel in connection with new drilling contracts are deferred along with any related incremental costs incurred directly related to preparation and mobilization. The deferred revenue and costs are recognized over the contract term using the straight-line method. Costs of relocating equipment without contracts are expensed as incurred. Demobilization fees received are recognized over the contract period and may be constrained to the amount that it is probable a significant reversal in the fees will not occur. When determining if such variable consideration should be constrained, management considers whether there are factors outside the Company’s control that could result in a significant reversal of revenue as well as the likelihood and magnitude of such a potential reversal.

The nature of our contracts gives rise to several types of variable consideration, including claims and lost-in-hole charges. Our claims are not significant and lost-in-hole charges are constrained variable consideration. We do not estimate revenue associated with these types of variable consideration.

We incur rebillable expenses including shipping and handling, third-party inspection and repairs, and customs costs and duties. We recognize the revenue associated with these rebillable expenses when reimbursed by customers as “Product Revenues” and all related costs as “Cost of Products” in the accompanying Condensed Consolidated Statements of Operations.

We provide certain assurance warranties on product sales which range from one to five years but do not offer extended warranties on any of our products or services. These assurance warranties are not separate performance obligations, thus no portion of the transaction price is allocated to our obligations under the assurance warranties.

In the following table, estimated revenue expected to be recognized in the future related to performance obligations that are either unsatisfied or partially unsatisfied as of June 30, 2018 relate to subsea services, an artificial lift contract, long-term early production facility construction contracts and rigs demobilization:



(Dollars in millions)	2018		2019		2020		2021		Thereafter		Total
Service revenue	$	37	$	54	$	17	$	—	$	—	$	108
Product revenue	10		1		—		—		—		11
Total	$	47	$	55	$	17	$	—	$	—	$	119

All consideration from contracts with customers is included in the amounts presented above.

Practical Expedients

We generally expense sales commissions paid when incurred as a result of obtaining a contract because the amortization period would have been one year or less. These costs are recorded within “Selling, General and Administrative Attributable to Segments” on our Condensed Consolidated Statements of Operations.

We do not disclose the value of unsatisfied performance obligations for (i) contracts with an original expected length of one year or less and (ii) contracts for which we recognize revenue at the amount to which we have the right to invoice for services performed.

Business Combinations and Divestitures	6 Months Ended
Business Combinations and Divestitures	Jun. 30, 2018
Business Combinations [Abstract]
Business Combinations and Divestitures	Business Combinations and Divestitures Acquisitions On March 26, 2018, we acquired the remaining 50% equity interest in our Qatari joint venture that we previously accounted for as an equity method investment and consolidated the entity. The joint venture was established in 2008 to provide energy related services required for the drilling and completion of oil and gas wells at onshore and offshore locations within the State of Qatar. The total consideration to purchase the remaining equity interest was $87 million, which is comprised of a cash consideration of $72 million and an estimated contingent consideration of $15 million related to services the Qatari entity will render under new contracts. Of the $72 million in cash consideration, $48 million was paid in accordance with closing terms through the joint venture, with the remaining payment of $24 million to be paid two years from closing. As a result of this step acquisition transaction with a change in control, we remeasured our previously held equity investment to fair value and recognized a $12 million gain. The Level 3 fair value of the acquisition was determined using an income approach. The unobservable inputs to the income approach included the Qatari entity’s estimated future cash flows and estimates of discount rates commensurate with the entity’s risks. Upon consolidation, we recognized intangible assets of $26 million, PP&E of $25 million, goodwill of $23 million, other current assets of $16 million and other liabilities of $43 million as a result of the purchase accounting assessment. For the second quarter and six months ended June 30, 2018, the Qatari entity’s revenues and net income subsequent to acquisition were immaterial. Divestitures In March 2018, we completed the sale of our continuous sucker rod service business in Canada for a purchase price of $25 million and recognized a gain of $2 million. The carrying amounts of the major classes of assets sold are PP&E of $14 million, allocated goodwill of $8 million and inventory of $1 million. We did not complete the sale of any other businesses through the quarter ended June 30, 2018. Held for Sale During the fourth quarter of 2017, we committed to a plan to divest our land drilling rigs assets. On July 11, 2018, we entered into purchase and sale agreements with ADES International Holding Ltd. (“ADES”) to sell our land drilling rig operations in Algeria, Kuwait and Saudi Arabia, as well as two idle land rigs in Iraq, for an aggregate purchase price of $287.5 million. See “Note 20 – Subsequent Events” to our Condensed Consolidated Financial Statements for additional information. We expect to close these transactions in a series of closings, most of which will be substantially complete in the second half of 2018. We will continue to pursue options to sell the remaining rig assets. During the second quarter of 2018, we also committed to plans to divest other business operations for which we believe a sale is probable within the next twelve months. Assets qualifying as held for sale after impairment charges of $82 million total $489 million at June 30, 2018 and consist of PP&E and other net assets of $356 million, allocated goodwill of $59 million, and inventory of $74 million. See Note 8 – Asset Impairments and Write-Downs for details related to the impairments to our land drilling rigs assets for the six months ended June 30, 2018.

Restructuring and Transformation Charges

6 Months Ended

Jun. 30, 2018

Restructuring and Related Activities [Abstract]

Restructuring Charges

Restructuring and Transformation Charges

Due to the highly competitive nature of our business and the continuing losses we incurred over the last years, we continue to reduce our overall cost structure and workforce to better align with current activity levels. The ongoing cost reduction plan, which began in 2018 and is expected to continue through 2019 (the “Transformation Plan”), included a workforce reduction, organization restructure, facility consolidations and other cost reduction measures and efficiency initiatives across our geographic regions.

In connection with the Transformation Plan, we recognized restructuring and transformation charges of $38 million and $63 million in the second quarter and the first six months of 2018, respectively, which include termination (severance) charges of $29 million and $40 million, respectively, and other restructuring charges of $9 million and $23 million, respectively. Other restructuring charges include contract termination costs, relocation and other associated costs.

The cost reduction plans in 2016-2017, (the “2016-17 Plan”), included a workforce reduction, facility consolidations and other cost reduction measures across our geographic regions. We recognized restructuring charges of $31 million and $106 million in the second quarter and the first six months of 2017, respectively, which include termination (severance) charges of $22 million and $56 million, respectively, and other restructuring charges of $9 million and $38 million, respectively. The first six months of 2017 also includes restructuring related asset charges of $12 million. Other restructuring charges include contract termination costs, relocation and other associated costs.

The following tables present the components of restructuring charges by segment for the second quarter and six months ended June 30, 2018 and 2017.



	Three Months Ended June 30, 2018
					Total
(Dollars in millions)	Severance		Other		Severance and
Transformation Plan	Charges		Charges		Other Charges
Western Hemisphere	$	11	$	2	$	13
Eastern Hemisphere	14		4		18
Corporate	4		3		7
Total	$	29	$	9	$	38



	Three Months Ended June 30, 2017
					Total
(Dollars in millions)	Severance		Other		Severance and
2016-17 Plan	Charges		Charges		Other Charges
Western Hemisphere	$	10	$	6	$	16
Eastern Hemisphere	11		3		14
Corporate	1		—		1
Total	$	22	$	9	$	31



	Six Months Ended June 30, 2018
					Total
(Dollars in millions)	Severance		Other		Severance and
Transformation Plan	Charges		Charges		Other Charges
Western Hemisphere	$	15	$	2	$	17
Eastern Hemisphere	18		9		27
Corporate	7		12		19
Total	$	40	$	23	$	63



	Six Months Ended June 30, 2017
					Total
(Dollars in millions)	Severance		Other		Severance and
2016-17 Plan	Charges		Charges		Other Charges
Western Hemisphere	$	15	$	24	$	39
Eastern Hemisphere	18		22		40
Corporate	23		4		27
Total	$	56	$	50	$	106

The severance and other restructuring charges gave rise to certain liabilities, the components of which are summarized below, and largely relate to liabilities accrued as part of the 2016-17 and Prior Plans that will be paid pursuant to the respective arrangements and statutory requirements.



	At June 30, 2018
	Transformation Plan				2016-17 and Prior Plans				Total
									Severance
	Severance		Other		Severance		Other		and Other
(Dollars in millions)	Liability		Liability		Liability		Liability		Liability
Western Hemisphere	$	7	$	—	$	2	$	12	$	21
Eastern Hemisphere	2		2		2		17		23
Corporate	8		5		6		—		19
Total	$	17	$	7	$	10	$	29	$	63

The following table presents the restructuring liability activity for the first six months of 2018.



			Six Months Ended June 30, 2018
(Dollars in millions)	Accrued Balance at December 31, 2017		Charges		Cash Payments			Other			Accrued Balance at June 30, 2018
Transformation Plan
Severance liability	$	—	$	40	$	(19	)	$	(4	)	$	17
Other restructuring liability	—		$	23	$	(15	)	$	(1	)	$	7

2016-17 and Prior Plans:
Severance liability	21		—		(11		)	—			10
Other restructuring liability	40		—		(10		)	(1		)	29
Total severance and other restructuring liability	$	61	$	63	$	(55	)	$	(6	)	$	63

Accounts Receivable Factoring and Other Receivables	6 Months Ended
Accounts Receivable Factoring and Other Receivables	Jun. 30, 2018
Receivables [Abstract]
Accounts Receivable Factoring and Other Receivables	Accounts Receivable Factoring and Other Receivables From time to time, we participate in factoring arrangements to sell accounts receivable to third-party financial institutions. In the first six months of 2018, we sold accounts receivable of $188 million and recognized a loss of approximately $1 million on these sales. We received cash proceeds totaling $181 million. In the first six months of 2017, we sold approximately $78 million and recognized a loss of $0.4 million. Our factoring transactions in the first six months of 2018 and 2017 were recognized as sales, and the proceeds are included as operating cash flows in our Condensed Consolidated Statements of Cash Flows. In the first quarter of 2017, Weatherford converted trade receivables of $65 million into a note from the customer with a face value of $65 million. The note had a three year term at a 4.625% stated interest rate. We reported the note as a trading security within “Other Current Assets” at fair value on the Condensed Consolidated Balance Sheets at its fair value of $58 million on March 31, 2017. The note fair value was considered a Level 2 valuation and was estimated using secondary market data for similar bonds. During the second quarter of 2017, we sold the note for $59 million.

- Definition

The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses.

+ References + Details

Inventories, Net

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Inventories, Net

Inventories, net of reserves, by category were as follows:



(Dollars in millions)	June 30, 2018		December 31, 2017
Raw materials, components and supplies	$	147	$	144
Work in process	53		47
Finished goods	943		1,043
	$	1,143	$	1,234

Asset Impairments and Write-Downs Asset Impairments and Write-Downs	6 Months Ended
	Jun. 30, 2018
Property, Plant and Equipment [Abstract]
Asset Impairments and Write-Downs	Asset Impairments and Write-Downs For the six months ended June 30, 2018, we recognized long-lived asset impairments on our held for sale assets of $82 million to write-down our assets to the lower of carrying amount or fair value less cost to sell for our land drilling rigs, of which $34 million was in our Western Hemisphere segment and $48 million in our Eastern Hemisphere segment. For the six months ended June 30, 2018, we recognized long-lived asset impairment charges of $10 million for assets other than those held for sale, of which $3 million was in our Western Hemisphere and $7 million is in our Eastern Hemisphere segment. The impairments were due to the sustained downturn in the oil and gas industry that resulted in us having to reassess our disposal groups for our land drilling rigs. The change in our expectations of the market’s recovery, in addition to successive negative operating cash flows in certain disposal asset groups represented an indicator that those assets will no longer be recoverable over their remaining useful lives. The Level 3 fair values of the long-lived assets were determined using a combination of the market and income approach. The market approach considered market sales values for similar assets. The unobservable inputs to the income approach included the assets’ estimated future cash flows and estimates of discount rates commensurate with the assets’ risks.

Goodwill

6 Months Ended

Jun. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill

The changes in the carrying amount of goodwill by reportable segment for the six months ended June 30, 2018, were as follows:



(Dollars in millions)	Western Hemisphere			Eastern Hemisphere			Total
Balance at December 31, 2017	$	1,958		$	769		$	2,727
Acquisitions	—			23			23
Dispositions	(8		)	—			(8		)
Reclassification to assets held for sale	(43		)	(16		)	(59		)
Foreign currency translation adjustments	(46		)	(16		)	(62		)
Balance at June 30, 2018	$	1,861		$	760		$	2,621

Short-term Borrowings and Other Debt Obligations

6 Months Ended

Jun. 30, 2018

Debt Disclosure [Abstract]

Short-term Borrowings and Other Debt Obligations

Short-Term Borrowings and Other Debt Obligations



(Dollars in millions)	June 30, 2018		December 31, 2017
Revolving Credit Agreement	$	225	$	—
Other Short-term Loans	7		11
Current Portion of Long-term Debt	63		137
Short-term Borrowings and Current Portion of Long-term Debt	$	295	$	148

Revolving Credit Agreement and Secured Term Loan Agreement

At June 30, 2018, we had total commitments under our revolving credit facility (the “Revolving Credit Agreement”) maturing in July 2019 of $900 million and borrowings of $350 million under our secured term loan agreement (“the Term Loan Agreement and collectively with the Revolving Credit Agreement, the “Credit Agreements”) maturing in July 2020. At June 30, 2018, we had $506 million available under the Credit Agreements and the following table summarizes our borrowing availability under these agreements:



(Dollars in millions)	June 30, 2018
Facilities	$	1,250
Less uses of facilities:
Revolving Credit Agreement	225
Letters of Credit	169
Secured Term Loan Principal Borrowing	350
Borrowing Availability	$	506

Loans under the Credit Agreements are subject to varying interest rates based on whether the loan is a Eurodollar or alternate base rate loan. We also incur a quarterly facility fee on the amount of the Revolving Credit Agreement. For the three months ended June 30, 2018, the interest rate for the Revolving Credit Agreement and the Term Loan were LIBOR plus a margin rate of 1.925% and LIBOR plus a margin rate of 1.425%, respectively.

Our Credit Agreements contain customary events of default, including in the event of our failure to comply with our financial covenants. We must maintain a leverage ratio of no greater than 2.5 to 1, a leverage and letters of credit ratio of no greater than 3.5 to 1, and an asset coverage ratio of at least 4.0 to 1, in each case with the terms and definitions for the ratios as provided in the Credit Agreements. At June 30, 2018, we were in compliance with these financial covenants. For additional information on our credit agreement covenants, please see “Note 12 – Short-term Borrowings and Other Debt Obligations” to the Condensed Consolidated Financial Statements contained in our Annual Report on Form 10-K for the year ended December 31, 2017.

We are currently negotiating amendments to the terms of our Credit Agreements. We anticipate the amendments will result in, among other items, a reduction in the aggregate commitments under the Revolving Credit Facility, a one-year extension of a portion of those commitments through July 2020, and a new 364-day second lien secured revolving facility. We expect the aggregate commitments of the amended Revolving Credit Facility and the 364-day facility to be approximately $900 million at closing, which is anticipated by the end of August 2018. Ninety days subsequent to closing, the combined Revolving Credit Facility commitments are expected to be reduced by approximately $54 million.

Senior Notes and Tender Offers

In February 2018, we issued $600 million in aggregate principal amount of our 9.875% senior notes due 2025. We used part of the proceeds from our debt offering to repay in full our 6.00% senior notes due March 2018 and to fund a concurrent tender offer to purchase for cash any and all of our 9.625% senior notes due 2019. We settled the tender offer in cash for the amount of $475 million, retiring an aggregate face value of $425 million and accrued interest of $20 million. In April 2018, we repaid the remaining principal outstanding on an early redemption of the bond. We recognized a cumulative loss of $34 million on these transactions in “Bond Tender and Call Premium” on the accompanying Condensed Consolidated Statements of Operations.

Other Borrowings and Debt Activity

We have short-term borrowings with various domestic and international institutions pursuant to uncommitted credit facilities. At June 30, 2018, we had $7 million in short-term borrowings under these arrangements. In addition, we had $350 million of letters of credit under various uncommitted facilities and $169 million of letters of credit under the Revolving Credit Agreement. At June 30, 2018, we have cash collateralized $92 million of our letters of credit, which is included “Cash and Cash Equivalents” in the accompanying Condensed Consolidated Balance Sheets. We have $9 million of surety bonds, primarily performance bonds, issued by financial sureties against an indemnification from us at June 30, 2018.

Fair Value of Financial Instruments

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

Financial Instruments Measured and Recognized at Fair Value

We estimate fair value at a price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants in the principal market for the asset or liability. Our valuation techniques require inputs that we categorize using a three level hierarchy, from highest to lowest level of observable inputs. Level 1 inputs are unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 inputs are quoted prices or other market data for similar assets and liabilities in active markets, or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument. Level 3 inputs are unobservable inputs based upon our own judgment and assumptions used to measure assets and liabilities at fair value. Classification of a financial asset or liability within the hierarchy is determined based on the lowest level of input that is significant to the fair value measurement. Other than the derivative instruments discussed in “Note 12 – Derivative Instruments”, we had no other material assets or liabilities measured and recognized at fair value on a recurring basis at June 30, 2018 and December 31, 2017.

Fair Value of Other Financial Instruments

Our other financial instruments include cash and cash equivalents, accounts receivable, accounts payable, and short-term borrowings and long-term debt. The carrying value of our cash and cash equivalents, accounts receivable, accounts payable, short-term borrowings approximates their fair value due to their short maturities. These short-term borrowings are classified as Level 2 in the fair value hierarchy.

The fair value of our long-term debt fluctuates with changes in applicable interest rates among other factors. Fair value will generally exceed carrying value when the current market interest rate is lower than the interest rate at which the debt was originally issued and will generally be less than the carrying value when the market rate is greater than the interest rate at which the debt was originally issued. The fair value of our long-term debt is classified as Level 2 in the fair value hierarchy and is established based on observable inputs in less active markets.

The fair value and carrying value of our senior notes were as follows:



(Dollars in millions)	June 30, 2018		December 31, 2017
Fair Value	$	6,951	$	7,060
Carrying Value	7,267		7,218

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Derivative Instruments

6 Months Ended

Jun. 30, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments

From time to time, we may enter into derivative financial instrument transactions to manage or reduce our market risk. We manage our debt portfolio to achieve an overall desired position of fixed and floating rates, and we may employ interest rate swaps as a tool to achieve that goal. We enter into foreign currency forward contracts and cross-currency swap contracts to economically hedge our exposure to fluctuations in various foreign currencies. The major risks from interest rate derivatives include changes in the interest rates affecting the fair value of such instruments, potential increases in interest expense due to market increases in floating interest rates, changes in foreign exchange rates and the creditworthiness of the counterparties in such transactions.

We monitor the creditworthiness of our counterparties, which are multinational commercial banks. The fair values of all our outstanding derivative instruments are determined using a model with Level 2 inputs including quoted market prices for contracts with similar terms and maturity dates.

Warrant

During the fourth quarter of 2016, in conjunction with the issuance of 84.5 million ordinary shares, we issued a warrant that gives the holder the option to acquire an additional 84.5 million ordinary shares. The exercise price on the warrant is $6.43 per share and is exercisable any time prior to May 21, 2019. The warrant is classified as a liability and carried at fair value with changes in its fair value reported through earnings. The warrant participates in dividends and other distributions as if the shares subject to the warrants were outstanding. In addition, the warrant permits early redemption due to a change in control.

The warrant fair value is considered a Level 2 valuation and is estimated using the Black Scholes valuation model. Inputs to the model include Weatherford’s share price, volatility of our share price, and the risk free interest rate. The fair value of the warrant was $14 million on June 30, 2018 and $70 million on December 31, 2017, generating unrealized gains of $10 million and $56 million for the second quarter and the first six months of 2018, respectively. In 2017, we recognized unrealized gain of $127 million and $65 million for the second quarter and the first six months of 2017, respectively. The change in fair value of the warrant during the first six months of 2018 was primarily driven by eliminating the warrant share value associated with any future equity issuance and a decrease in Weatherford’s stock price.

Fair Value Hedges

We may use interest rate swaps to help mitigate exposures related to changes in the fair values of the fixed-rate debt. The interest rate swap is recorded at fair value with changes in fair value recorded in earnings. The carrying value of fixed-rate debt is also adjusted for changes in interest rates, with the changes in value recorded in earnings. After termination of the hedge, any discount or premium on the fixed-rate debt is amortized to interest expense over the remaining term of the debt. As of June 30, 2018, we did not have any fair value hedges designated.

We had net unamortized premiums on fixed-rate debt of nil and $4 million on June 30, 2018 and December 31, 2017, respectively, associated with fair value hedge terminations. These premiums were being amortized over the remaining term of the originally hedged debt as a reduction in interest expense included in “Interest Expense, Net” on the accompanying Condensed Consolidated Statements of Operations and were fully amortized upon completion of the tender offer in April 2018.

Cash Flow Hedges

In 2008, we entered into interest rate derivative instruments to hedge projected exposures to interest rates in anticipation of a debt offering. These hedges were terminated at the time of the issuance of the debt, and the associated loss is being amortized from “Accumulated Other Comprehensive Loss” to interest expense over the remaining term of the debt. As of June 30, 2018, we had net unamortized losses of $8 million associated with our cash flow hedge terminations. As of June 30, 2018, we did not have any cash flow hedges designated.

Foreign Currency and Warrant Derivative Instruments

At June 30, 2018 and December 31, 2017, we had outstanding foreign currency forward contracts with notional amounts aggregating to $463 million and $767 million, respectively. The notional amounts of our foreign currency forward contracts do not generally represent amounts exchanged by the parties and thus are not a measure of the cash requirements related to these contracts or of any possible loss exposure. The amounts actually exchanged at maturity are calculated by reference to the notional amounts and by other terms of the derivative contracts, such as exchange rates.

Our foreign currency derivatives are not designated as hedges under ASC 815, and the changes in fair value of the contracts are recorded each period in “Other Income (Expense), Net” on the accompanying Condensed Consolidated Statements of Operations.

The total estimated fair values of our foreign currency forward contracts and warrant derivative were as follows:



(Dollars in millions)	June 30, 2018			December 31, 2017			Classification
Derivative assets not designated as hedges:
Foreign currency forward contracts	$	3		$	5		Other Current Assets

Derivative liabilities not designated as hedges:
Foreign currency forward contracts	(3		)	(4		)	Other Current Liabilities
Warrant on Weatherford Shares	(14		)	(70		)	Other Current Liabilities

The amount of derivative instruments’ gain or (loss) on the Condensed Consolidated Statements of Operations is in the table below.



	Three Months Ended June 30,						Six Months Ended June 30,
(Dollars in millions)	2018			2017			2018		2017			Classification
Foreign currency forward contracts	$	(1	)	$	(15	)	$	—	$	(22	)	Other Income (Expense), Net
Warrant on Weatherford Shares	10			127			56		65			Warrant Fair Value Adjustment

Income Taxes	6 Months Ended
Income Taxes	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We have historically calculated the provision for income taxes during interim reporting periods by applying an estimate of the annual effective tax rate for the full fiscal year to ordinary income or loss (pre-tax income or loss excluding unusual or infrequently occurring discrete items and pre-tax losses for which no benefit has been recognized) for the reporting period. For the three month and six month periods ended June 30, 2018, we have determined that since small changes in estimated ordinary annual income would result in significant changes in the estimated annual effective tax rate, the use of a discrete effective tax rate is appropriate for the current quarter. The discrete method treats the year-to-date period as if it was the annual period and determines the income tax expense or benefit on that basis. We will continue to use this method each quarter until the annual effective tax rate method is deemed appropriate. For the second quarter and the first six months of 2018, we had a tax expense of $26 million and $58 million, respectively on a loss before income taxes of $233 million and $443 million, respectively. Results for the second quarter and the first six months of 2018 include losses with no significant tax benefit. The tax expense for the second quarter and the first six months of 2018 also includes withholding taxes and deemed profit taxes that do not directly correlate to ordinary income or loss. On December 22, 2017, the U.S. enacted into law a comprehensive tax reform bill (the “Tax Cuts and Jobs Act,” or “TCJA”). The TCJA significantly revises the U.S. corporate income tax by, among other things, lowering the statutory corporate tax rate from 35% to 21%, eliminating certain deductions, imposing a mandatory one-time tax on accumulated earnings of foreign subsidiaries as of 2017 held in cash and illiquid assets (with the latter taxed at a lower rate), and a shift of the U.S. taxation of multinational corporations from a tax on worldwide income to a partial territorial system (along with certain rules designed to prevent erosion of the U.S. income tax base, such as the base erosion and anti-abuse tax). The SEC has issued guidance that allows for a measurement period of up to one year after the enactment date of the legislation to finalize the recording of the related tax impacts. In the fourth quarter of 2017, the Company did not have all the necessary information to analyze all effects of this tax reform; as a result, we recorded a provisional amount which we believe represents a reasonable estimate of the accounting implications of this tax reform. In addition, the various impacts of the TCJA may materially differ from the estimated impacts recognized in the fourth quarter due to regulatory guidance that may be issued in the future, tax law technical corrections, refined computations, and possible changes in the Company’s interpretations, assumptions, and actions as a result of the tax legislation. No adjustment to the provisional amount was recorded in the first six months of 2018. We will continue to evaluate tax reform, and adjust the provisional amounts as additional information is obtained. Any adjustment to these provisional amounts will be reported in the reporting period in which any such adjustments are determined, which will be no later than the fourth quarter of 2018. We are continuously under tax examination in various jurisdictions. We cannot predict the timing or outcome regarding resolution of these tax examinations or if they will have a material impact on our financial statements. We continue to anticipate a possible reduction in the balance of uncertain tax positions of approximately $12 million in the next twelve months due to expiration of statutes of limitations, settlements and/or conclusions of tax examinations. For the second quarter and the first six months of 2017, we had a tax expense of $17 million and $50 million, respectively, on a loss before income taxes of $148 million and $558 million, respectively. Results for the second quarter and the first six months of 2017 include losses with no significant tax benefit. The tax expense for the second quarter and the first six months also included withholding taxes and deemed profit taxes that do not directly correlate to ordinary income or loss.

Shareholders' Equity

6 Months Ended

Jun. 30, 2018

Equity [Abstract]

Shareholders' Equity

Shareholders’ Equity

The following summarizes our shareholders’ equity activity for the first six months of 2018 and 2017:



(Dollars in millions)	Par Value of Issued Shares		Capital in Excess of Par Value		Retained Earnings (Deficit)			Accumulated Other Comprehensive Income (Loss)			Non-controlling Interests			Total Shareholders’ Equity (Deficiency)
Balance at December 31, 2016	$	1	$	6,571	$	(2,950	)	$	(1,610	)	$	56		$	2,068
Net Income (Loss)	—		—		(619		)	—			11			(608		)
Other Comprehensive Income	—		—		—			33			—			33
Dividends Paid to Noncontrolling Interests	—		—		—			—			(10		)	(10		)
Equity Awards Granted, Vested and Exercised	—		41		—			—			—			41
Balance at June 30, 2017	$	1	$	6,612	$	(3,569	)	$	(1,577	)	$	57		$	1,524

Balance at December 31, 2017	$	1	$	6,655	$	(5,763	)	$	(1,519	)	$	55		$	(571	)
Net Income (Loss)	—		—		(509		)	—			8			(501		)
Other Comprehensive Income	—		—		—			(160		)	—			(160		)
Dividends Paid to Noncontrolling Interests	—		—		—			—			(6		)	(6		)
Equity Awards Granted, Vested and Exercised	—		29		—			—			—			29
Adoption of Intra-Entity Transfers of Assets Other Than Inventory and Revenue from Contracts with Customers	—		—		(97		)	—			—			(97		)
Other	—		4		—			—			(10		)	(6		)
Balance at June 30, 2018	$	1	$	6,688	$	(6,369	)	$	(1,679	)	$	47		$	(1,312	)

The following table presents the changes in our accumulated other comprehensive loss by component for the first six months of 2018 and 2017:



(Dollars in millions)	Currency Translation Adjustment			Defined Benefit Pension			Deferred Loss on Derivatives			Total
Balance at December 31, 2016	$	(1,614	)	$	13		$	(9	)	$	(1,610	)

Other Comprehensive Income before Reclassifications	74			—			—			74
Reclassifications	—			(41		)	—			(41		)
Net activity	74			(41		)	—			33

Balance at June 30, 2017	$	(1,540	)	$	(28	)	$	(9	)	$	(1,577	)

Balance at December 31, 2017	$	(1,484	)	$	(26	)	$	(9	)	$	(1,519	)

Other Comprehensive Income before Reclassifications	(161		)	—			—			(161		)
Reclassifications	—			1			—			1
Net activity	(161		)	1			—			(160		)

Balance at June 30, 2018	$	(1,645	)	$	(25	)	$	(9	)	$	(1,679	)

For the six months ended June 30, 2017, defined benefit pension reclassifications relate to amortization of unrecognized net gains associated primarily with our supplemental executive retirement plan.

Earnings per Share

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Earnings per Share

Basic earnings per share for all periods presented equals net income (loss) divided by the weighted average number of our shares outstanding during the period including participating securities. Diluted earnings (loss) per share is computed by dividing net income (loss) by the weighted average number of our shares outstanding during the period including participating securities and potentially dilutive shares. The following table presents our basic and diluted weighted average shares outstanding for the second quarter and the first six months of 2018 and 2017:



	Three Months Ended June 30,		Six Months Ended June 30,
(Shares in millions)	2018	2017	2018	2017
Basic and Diluted weighted average shares outstanding	997	990	995	989

Our basic and diluted weighted average shares outstanding for the periods presented are equivalent due to the net loss attributable to shareholders. Diluted weighted average shares outstanding for the second quarter and the first six months of 2018 and 2017 exclude potential shares for stock options, restricted shares, performance units, exchangeable notes, warrant outstanding and the Employee Stock Purchase Plan as we have net losses for those periods and their inclusion would be anti-dilutive. The following table discloses the number of anti-dilutive shares excluded for the second quarter and the first six months of 2018 and 2017:



	Three Months Ended June 30,		Six Months Ended June 30,
(Shares in millions)	2018	2017	2018	2017
Anti-dilutive potential shares due to net loss	250	250	250	250

Share-Based Compensation

6 Months Ended

Jun. 30, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Share-Based Compensation

We recognized the following employee share-based compensation expense during the second quarter and the first six months of 2018 and 2017:



	Three Months Ended June 30,				Six Months Ended June 30,
(Dollars in millions)	2018		2017		2018		2017
Share-based compensation	$	14	$	17	$	27	$	41
Related tax benefit	—		—		—		—

During the first six months of 2018, we granted to certain employees 1.5 million performance share units that will vest with continued employment if the Company meets certain market-based goals. These performance share units have a weighted average grant date fair value of $5.30 per share based on the Monte Carlo simulation method. The assumptions used in the Monte Carlo simulation included a weighted average risk-free rate of 2.28%, volatility of 63% and a zero dividend yield. We also granted 1.5 million performance shares that will vest with continued employment if the Company meets a certain performance goal. These performance share units have a weighted average grant date fair value of $3.86. As of June 30, 2018, there was $14 million of unrecognized compensation expense related to our performance share units. This cost is expected to be recognized over a weighted average period of two years.

During the first six months of 2018, we also granted 3.7 million restricted share units at a weighted average grant date fair value of $3.71 per share. As of June 30, 2018, there was $46 million of unrecognized compensation expense related to our unvested restricted share grants. This cost is expected to be recognized over a weighted average period of two years.

Segment Information

6 Months Ended

Jun. 30, 2018

Segment Reporting [Abstract]

Segment Information

Financial information by segment is summarized below. Revenues are attributable to countries based on the ultimate destination of the sale of products or performance of services. The accounting policies of the segments are the same as those described in the summary of significant accounting policies as presented in our Annual Report on Form 10-K.



	Three Months Ended June 30, 2018
(Dollars in millions)	Revenues		Income (Loss) from Operations			Depreciation and Amortization
Western Hemisphere	$	769	$	50		$	56
Eastern Hemisphere	679		19			84
	1,448		69			140
Corporate General and Administrative			(34		)	4
Restructuring and Transformation Charges			(38		)
Long-Lived Asset Impairments, Asset Write-Downs and Other ^(a)			(70		)
Total	$	1,448	$	(73	)	$	144


(a)	Includes long-lived asset impairments and other asset write-downs, partially offset by gains on property sales and a reduction of a contingency reserve on a legacy contract.



	Three Months Ended June 30, 2017
(Dollars in millions)	Revenues		Loss from Operations			Depreciation and Amortization
Western Hemisphere	$	678	$	(51	)	$	92
Eastern Hemisphere	685		(22		)	111
	1,363		(73		)	203
Corporate General and Administrative			(33		)	1
Restructuring Charges			(31		)
Asset Write-Downs and Other			(8		)
Total	$	1,363	$	(145	)	$	204



	Six Months Ended June 30, 2018
(Dollars in millions)	Revenues		Income (Loss) from Operations			Depreciation and Amortization
Western Hemisphere	$	1,525	$	74		$	116
Eastern Hemisphere	1,346		35			170
	2,871		109			286
Corporate General and Administrative			(70		)	5
Restructuring and Transformation Charges			(63		)
Long-Lived Asset Impairments, Asset Write-Downs and Other ^(b)			(88		)
Total	$	2,871	$	(112	)	$	291


(b)	Includes long-lived asset impairments, other asset write-downs and inventory charges, partially offset by gains on purchase of the remaining interest in a joint venture, property sales and a reduction of a contingency reserve on a legacy contract.



	Six Months Ended June 30, 2017
(Dollars in millions)	Revenues		Loss from Operations			Depreciation and Amortization
Western Hemisphere	$	1,411	$	(81	)	$	183
Eastern Hemisphere	1,338		(81		)	226
	2,749		(162		)	409
Corporate General and Administrative			(66		)	3
Restructuring Charges			(106		)
Asset Write-Downs and Other			(25		)
Total	$	2,749	$	(359	)	$	412

Disputes, Litigation and Contingencies	6 Months Ended
Disputes, Litigation and Contingencies	Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Disputes, Litigation and Contingencies	Disputes, Litigation and Contingencies Shareholder Litigation In 2010, three shareholder derivative actions were filed, purportedly on behalf of the Company, asserting breach of duty and other claims against certain current and former officers and directors of the Company related to the United Nations oil-for-food program governing sales of goods into Iraq, the Foreign Corrupt Practices Act of 1977 and trade sanctions related to the U.S. government investigations disclosed in our SEC filings since 2007. Those shareholder derivative cases were filed in Harris County, Texas state court and consolidated under the caption Neff v. Brady, et al., No. 2010040764 (collectively referred to as the “Neff Case”). Other shareholder demand letters covering the same subject matter were received by the Company in early 2014, and a fourth shareholder derivative action was filed, purportedly on behalf of the Company, also asserting breach of duty and other claims against certain current and former officers and directors of the Company related to the same subject matter as the Neff Case. That case, captioned Erste-Sparinvest KAG v. Duroc-Danner, et al., No. 201420933 (Harris County, Texas) was consolidated into the Neff Case in September 2014. A motion to dismiss was granted May 15, 2015, and an appeal was filed on June 15, 2015. Following briefing and oral argument, on June 29, 2017, the Texas Court of Appeals denied in part and granted in part the shareholders’ appeal. The Court ruled that the shareholders lacked standing to bring claims that arose prior to the Company’s redomestication to Switzerland in 2009, and upheld the dismissal of those claims. The Court reversed as premature the trial court’s dismissal of claims arising after the redomestication and remanded to the trial court for further proceedings. On February 1, 2018, the individual defendants and nominal defendant Weatherford filed a motion for summary judgment on the remaining claims in the case. On February 13, 2018, the trial court dismissed with prejudice certain directors for lack of jurisdiction. The plaintiffs have appealed the jurisdictional ruling and the parties have jointly moved for a stay of the case during the pendency of the appeal. We cannot reliably predict the outcome of the remaining claims, including the amount of any possible loss. U.S. Government and Other Investigations The SEC and the U.S. Department of Justice investigated certain accounting issues associated with the material weakness in our internal control over financial reporting for income taxes that was disclosed in a notification of late filing on Form 12b-25 filed on March 1, 2011 and in current reports on Form 8-K filed on February 21, 2012 and on July 24, 2012 and the subsequent restatements of our historical financial statements. As disclosed in the Form 8-K filed on September 27, 2016, the Company settled with the SEC without admitting or denying the findings of the SEC, by consenting to the entry of an administrative order that requires the Company to cease and desist from committing or causing any violations and any future violations of the anti-fraud provisions of the Securities Act of 1933 (as amended, the “Securities Act”), and the anti-fraud, reporting, books and records, and internal controls provisions of the Securities Exchange Act of 1934 (as amended, the “Exchange Act”), and the rules promulgated thereunder. As part of the terms of the SEC settlement, the Company agreed to pay in installments a total civil monetary penalty of $140 million, beginning in the fourth quarter of 2016 and concluding in September 2017. In addition, certain reports and certifications regarding our tax internal controls were delivered to the SEC during the two years following the settlement. We completed and delivered the third and final report in April of 2018. Rapid Completions and Packers Plus Litigation Several subsidiaries of the Company are defendants in a patent infringement lawsuit filed by Rapid Completions LLC (“RC”) in U.S. District Court for the Eastern District of Texas on July 31, 2015. RC claims that we and other defendants are liable for infringement of seven U.S. patents related to specific downhole completion equipment and the methods of using such equipment. These patents have been assigned to Packers Plus Energy Services, Inc., a Canadian corporation (“Packers Plus”), and purportedly exclusively licensed to RC. RC is seeking a permanent injunction against further alleged infringement, unspecified damages for infringement, supplemental and enhanced damages, and additional relief such as attorneys’ fees. The Company has filed a counterclaim against Packers Plus, seeking declarations of non-infringement, invalidity, and unenforceability of the four patents that remain asserted against the Company on the grounds of inequitable conduct. The Company is seeking attorneys’ fees and costs incurred in the lawsuit. The litigation was stayed, pending resolution of inter partes reviews (“IPR”) of each of the four patents before the Patent Trial and Appeal Board (“PTAB”) of the U.S. Patent and Trademark Office (“USPTO”). On February 22, 2018, the PTAB issued IPR decisions finding that all of the claims of the ‘505, ‘634, and ‘774 patents that were challenged by the Company in the IPRs are invalid. There is one more pending IPR relating to the ‘501 patent, and the oral arguments in that IPR took place on June 26, 2018. The PTAB should issue its decision on validity of the ‘501 in the fourth quarter of 2018. Given the similarities among the four patents, the Company believes it will obtain a favorable outcome in the remaining IPR. RC has appealed the PTAB’s decisions. On October 14, 2015, Packers Plus and RC filed suit in Federal Court in Toronto, Canada against the Company and certain subsidiaries alleging infringement of a related Canadian patent and seeking unspecified damages and an accounting of the Company’s profits. Trial on the validity of the Canadian patent was completed in March 2017. On November 3, 2017, the Federal Court issued its decision, wherein it concluded that the defendants proved that the patent-in-suit was invalid and dismissed Packers Plus and RC’s claims of infringement. On January 5, 2018, Packers Plus and RC filed their Notice of Appeal. The Company filed its responsive brief in June 2018. The Company expects that the hearing of the appeal will take place in the fourth quarter of 2018. If one or more negative outcomes were to occur in either case, the impact to our financial position, results of operations, or cash flows could be material. Other Disputes and Litigation We are aware of various other disputes and potential claims and are a party in various litigation involving claims against us, some of which are covered by insurance. For claims, disputes and pending litigation in which we believe a negative outcome is probable and a loss can be reasonably estimated, we have recorded a liability for the expected loss. These liabilities are immaterial to our financial condition and results of operations. In addition, we have certain claims, disputes and pending litigation for which we do not believe a negative outcome is probable or for which we can only estimate a range of liability. It is possible, however, that an unexpected judgment could be rendered against us, or we could decide to resolve a case or cases, that would result in liability that could be uninsured and beyond the amounts we currently have reserved and in some cases those losses could be material. If one or more negative outcomes were to occur relative to these matters, the aggregate impact to our financial condition could be material. Accrued litigation and settlements recorded in “Other Current Liabilities” on the accompanying Condensed Consolidated Balance Sheets as of June 30, 2018 and December 31, 2017 were $33 million and $51 million, respectively. Other Contingencies We have minimum purchase commitments related to a supply contract and maintain a liability at June 30, 2018 of $47 million for expected penalties to be paid, of which $22 million is recorded in “Other Current Liabilities,” $25 million is recorded in “Other Non-Current Liabilities” on our Condensed Consolidated Balance Sheets.

Condensed Consolidating Financial Statements

6 Months Ended

Jun. 30, 2018

Condensed Financial Information of Parent Company Only Disclosure [Abstract]

Condensed Consolidating Financial Statements

Weatherford International plc (“Weatherford Ireland”), a public limited company organized under the laws of Ireland, a Swiss tax resident, and the ultimate parent of the Weatherford group, guarantees the obligations of its subsidiaries – Weatherford International Ltd., a Bermuda exempted company (“Weatherford Bermuda”), and Weatherford International, LLC, a Delaware limited liability company (“Weatherford Delaware”), including the notes and credit facilities listed below.

The 6.80% senior notes due 2037 of Weatherford Delaware were guaranteed by Weatherford Bermuda at June 30, 2018 and December 31, 2017. At June 30, 2018, Weatherford Bermuda also guaranteed the 9.875% senior notes due 2025.

The following obligations of Weatherford Bermuda were guaranteed by Weatherford Delaware at June 30, 2018 and December 31, 2017: (1) Revolving Credit Agreement, (2) Term Loan Agreement, (3) 9.625% senior notes due 2019, which were repaid in full through early redemption of the bond in April 2018 (4) 6.50% senior notes due 2036, (5) 7.00% senior notes due 2038, (6) 9.875% senior notes due 2039, (7) 5.125% senior notes due 2020, (8) 6.75% senior notes due 2040, (9) 4.50% senior notes due 2021, (10) 5.95% senior notes due 2042, (11) 5.875% exchangeable senior notes due 2021, (12) 7.75% senior notes due 2021, (13) 8.25% senior notes due 2023 and (14) 9.875% senior notes due 2024. At December 31, 2017, Weatherford Delaware also guaranteed the 6.00% senior notes due 2018, which were repaid in full in March 2018.

As a result of certain of these guarantee arrangements, we are required to present the following condensed consolidating financial information. The accompanying guarantor financial information is presented on the equity method of accounting for all periods presented. Under this method, investments in subsidiaries are recorded at cost and adjusted for our share in the subsidiaries’ cumulative results of operations, capital contributions and distributions and other changes in equity. Elimination entries relate primarily to the elimination of investments in subsidiaries and associated intercompany balances and transactions.

Condensed Consolidating Statement of Operations and

Comprehensive Income (Loss)

Three Months Ended June 30, 2018

(Unaudited)



(Dollars in millions)	Weatherford Ireland			Weatherford Bermuda			Weatherford Delaware			Other Subsidiaries			Eliminations			Consolidation
Revenues	$	—		$	—		$	—		$	1,448		$	—		$	1,448
Costs and Expenses	(5		)	—			—			(1,516		)	—			(1,521		)
Operating Income (Loss)	(5		)	—			—			(68		)	—			(73		)

Other Income (Expense):
Interest Expense, Net	—			(137		)	(25		)	5			5			(152		)
Intercompany Charges, Net	3			5			(40		)	(81		)	113			—
Equity in Subsidiary Income (Loss)	(272		)	28			(23		)	—			267			—
Other, Net	10			10			11			(28		)	(11		)	(8		)
Income (Loss) Before Income Taxes	(264		)	(94		)	(77		)	(172		)	374			(233		)
(Provision) Benefit for Income Taxes	—			—			—			(26		)	—			(26		)
Net Income (Loss)	(264		)	(94		)	(77		)	(198		)	374			(259		)
Noncontrolling Interests	—			—			—			5			—			5
Net Income (Loss) Attributable to Weatherford	$	(264	)	$	(94	)	$	(77	)	$	(203	)	$	374		$	(264	)
Comprehensive Income (Loss) Attributable to Weatherford	$	(429	)	$	(126	)	$	(55	)	$	(369	)	$	550		$	(429	)

Condensed Consolidating Statement of Operations and

Comprehensive Income (Loss)

Three Months Ended June 30, 2017

(Unaudited)



(Dollars in millions)	Weatherford Ireland			Weatherford Bermuda			Weatherford Delaware			Other Subsidiaries			Eliminations			Consolidation
Revenues	$	—		$	—		$	—		$	1,363		$	—		$	1,363
Costs and Expenses	(5		)	19			1			(1,523		)	—			(1,508		)
Operating Income (Loss)	(5		)	19			1			(160		)	—			(145		)

Other Income (Expense):
Interest Expense, Net	—			(144		)	1			11			(6		)	(138		)
Intercompany Charges, Net	3			(82		)	(41		)	120			—			—
Equity in Subsidiary Income	(296		)	(304		)	(39		)	—			639			—
Other, Net	127			247			191			(237		)	(193		)	135
Income (Loss) Before Income Taxes	(171		)	(264		)	113			(266		)	440			(148		)
(Provision) Benefit for Income Taxes	—			—			—			(17		)	—			(17		)
Net Income (Loss)	(171		)	(264		)	113			(283		)	440			(165		)
Noncontrolling Interests	—			—			—			6			—			6
Net Income (Loss) Attributable to Weatherford	$	(171	)	$	(264	)	$	113		$	(289	)	$	440		$	(171	)
Comprehensive Income (Loss) Attributable to Weatherford	$	(181	)	$	(290	)	$	128		$	(298	)	$	460		$	(181	)

Condensed Consolidating Statement of Operations and

Comprehensive Income (Loss)

Six Months Ended June 30, 2018

(Unaudited)



(Dollars in millions)	Weatherford Ireland			Weatherford Bermuda			Weatherford Delaware			Other Subsidiaries			Eliminations			Consolidation
Revenues	$	—		$	—		$	—		$	2,871		$	—		$	2,871
Costs and Expenses	(3		)	—			—			(2,980		)	—			(2,983		)
Operating Income (Loss)	(3		)	—			—			(109		)	—			(112		)

Other Income (Expense):
Interest Expense, Net	—			(281		)	(39		)	9			10			(301		)
Intercompany Charges, Net	(15		)	2			(29		)	(675		)	717			—
Equity in Subsidiary Income (Loss)	(547		)	(322		)	(156		)	—			1,025			—
Other, Net	56			100			133			(185		)	(134		)	(30		)
Income (Loss) Before Income Taxes	(509		)	(501		)	(91		)	(960		)	1,618			(443		)
(Provision) Benefit for Income Taxes	—			—			—			(58		)	—			(58		)
Net Income (Loss)	(509		)	(501		)	(91		)	(1,018		)	1,618			(501		)
Noncontrolling Interests	—			—			—			8			—			8
Net Income (Loss) Attributable to Weatherford	$	(509	)	$	(501	)	$	(91	)	$	(1,026	)	$	1,618		$	(509	)
Comprehensive Income (Loss) Attributable to Weatherford	$	(669	)	$	(527	)	$	(57	)	$	(1,187	)	$	1,771		$	(669	)

Condensed Consolidating Statement of Operations and

Comprehensive Income (Loss)

Six Months Ended June 30, 2017

(Unaudited)



(Dollars in millions)	Weatherford Ireland			Weatherford Bermuda			Weatherford Delaware			Other Subsidiaries			Eliminations			Consolidation
Revenues	$	—		$	—		$	—		$	2,749		$	—		$	2,749
Costs and Expenses	(8		)	39			1			(3,140		)	—			(3,108		)
Operating Income (Loss)	(8		)	39			1			(391		)	—			(359		)

Other Income (Expense):
Interest Expense, Net	—			(283		)	(20		)	15			9			(279		)
Intercompany Charges, Net	4			(90		)	(43		)	129			—			—
Equity in Subsidiary Income	(680		)	(132		)	180			—			632			—
Other, Net	65			31			52			(14		)	(54		)	80
Income (Loss) Before Income Taxes	(619		)	(435		)	170			(261		)	587			(558		)
(Provision) Benefit for Income Taxes	—			—			—			(50		)	—			(50		)
Net Income (Loss)	(619		)	(435		)	170			(311		)	587			(608		)
Noncontrolling Interests	—			—			—			11			—			11
Net Income (Loss) Attributable to Weatherford	$	(619	)	$	(435	)	$	170		$	(322	)	$	587		$	(619	)
Comprehensive Income (Loss) Attributable to Weatherford	$	(586	)	$	(466	)	$	102		$	(288	)	$	652		$	(586	)

Condensed Consolidating Balance Sheet

June 30, 2018

(Unaudited)



(Dollars in millions)	Weatherford Ireland			Weatherford Bermuda		Weatherford Delaware		Other Subsidiaries		Eliminations			Consolidation
Current Assets:
Cash and Cash Equivalents	$	—		$	65	$	—	$	350	$	—		$	415
Other Current Assets	1			—		496		3,315		(534		)	3,278
Total Current Assets	1			65		496		3,665		(534		)	3,693

Equity Investments in Affiliates	(1,343		)	7,675		7,701		776		(14,809		)	—
Intercompany Receivables, Net	2			—		—		3,008		(3,010		)	—
Other Assets	—			6		4		5,276		—			5,286
Total Assets	$	(1,340	)	$	7,746	$	8,201	$	12,725	$	(18,353	)	$	8,979

Current Liabilities:
Short-term Borrowings and Current Portion of Long-Term Debt	$	—		$	276	$	—	$	19	$	—		$	295
Accounts Payable and Other Current Liabilities	19			168		—		2,251		(533		)	1,905
Total Current Liabilities	19			444		—		2,270		(533		)	2,200

Long-term Debt	—			6,644		763		148		79			7,634
Intercompany Payables, Net	—			183		2,827		—		(3,010		)	—
Other Long-term Liabilities	—			11		3		446		(3		)	457
Total Liabilities	19			7,282		3,593		2,864		(3,467		)	10,291

Weatherford Shareholders’ Equity	(1,359		)	464		4,608		9,814		(14,886		)	(1,359		)
Noncontrolling Interests	—			—		—		47		—			47
Total Liabilities and Shareholders’ Equity	$	(1,340	)	$	7,746	$	8,201	$	12,725	$	(18,353	)	$	8,979

Condensed Consolidating Balance Sheet

December 31, 2017



(Dollars in millions)	Weatherford Ireland			Weatherford Bermuda		Weatherford Delaware		Other Subsidiaries		Eliminations			Consolidation
Current Assets:
Cash and Cash Equivalents	$	—		$	195	$	—	$	418	$	—		$	613
Other Current Assets	1			—		516		3,298		(550		)	3,265
Total Current Assets	1			195		516		3,716		(550		)	3,878

Equity Investments in Affiliates	(460		)	7,998		8,009		530		(16,077		)	—
Intercompany Receivables, Net	—			—		—		4,213		(4,213		)	—
Other Assets	—			8		4		5,857		—			5,869
Total Assets	$	(459	)	$	8,201	$	8,529	$	14,316	$	(20,840	)	$	9,747

Current Liabilities:
Short-term Borrowings and Current Portion of Long-Term Debt	$	—		$	128	$	—	$	20	$	—		$	148
Accounts Payable and Other Current Liabilities	10			183		—		2,439		(550		)	2,082
Total Current Liabilities	10			311		—		2,459		(550		)	2,230

Long-term Debt	—			7,127		166		159		89			7,541
Intercompany Payables, Net	87			242		3,884		—		(4,213		)	—
Other Long-term Liabilities	70			146		136		332		(137		)	547
Total Liabilities	167			7,826		4,186		2,950		(4,811		)	10,318

Weatherford Shareholders’ Equity	(626		)	375		4,343		11,311		(16,029		)	(626		)
Noncontrolling Interests	—			—		—		55		—			55
Total Liabilities and Shareholders’ Equity	$	(459	)	$	8,201	$	8,529	$	14,316	$	(20,840	)	$	9,747

Condensed Consolidating Statement of Cash Flows

Six Months Ended June 30, 2018

(Unaudited)



(Dollars in millions)	Weatherford Ireland			Weatherford Bermuda			Weatherford Delaware			Other Subsidiaries			Eliminations			Consolidation
Cash Flows from Operating Activities:
Net Income (Loss)	$	(509	)	$	(501	)	$	(91	)	$	(1,018	)	$	1,618		$	(501	)
Adjustments to Reconcile Net Income (Loss) to Net Cash Provided (Used) by Operating Activities:
Charges from Parent or Subsidiary	15			(2		)	29			675			(717		)	—
Equity in (Earnings) Loss of Affiliates	547			322			156			—			(1,025		)	—
Deferred Income Tax Provision (Benefit)	—			—			—			(5		)				(5		)
Other Adjustments	70			565			(166		)	(402		)	124			191
Net Cash Provided (Used) by Operating Activities	123			384			(72		)	(750		)	—			(315		)
Cash Flows from Investing Activities:
Capital Expenditures for Property, Plant and Equipment	—			—			—			(68		)	—			(68		)
Capital Expenditures for Assets Held for Sale	—			—			—			(18		)	—			(18		)
Acquisitions of Businesses, Net of Cash Acquired	—			—			—			4			—			4
Acquisition of Intellectual Property	—			—			—			(7		)	—			(7		)
Proceeds from Sale of Assets	—			—			—			50			—			50
Proceeds from Sale of Businesses and Equity Investment, Net	—			—			—			25			—			25
Net Cash Provided (Used) by Investing Activities	—			—			—			(14		)	—			(14		)
Cash Flows from Financing Activities:
Borrowings (Repayments) Short-term Debt, Net	—			90			—			(3		)	—			87
Borrowings (Repayments) Long-term Debt, Net	—			(450		)	587			(4		)	—			133
Borrowings (Repayments) Between Subsidiaries, Net	(123		)	(154		)	(515		)	792			—			—
Other, Net	—			—			—			(48		)	—			(48		)
Net Cash Provided (Used) by Financing Activities	(123		)	(514		)	72			737			—			172
Effect of Exchange Rate Changes On Cash and Cash Equivalents	—			—			—			(41		)	—			(41		)
Net Increase (Decrease) in Cash and Cash Equivalents	—			(130		)	—			(68		)	—			(198		)
Cash and Cash Equivalents at Beginning of Period	—			195			—			418			—			613
Cash and Cash Equivalents at End of Period	$	—		$	65		$	—		$	350		$	—		$	415

Condensed Consolidating Statement of Cash Flows

Six Months Ended June 30, 2017

(Unaudited)



(Dollars in millions)	Weatherford Ireland			Weatherford Bermuda			Weatherford Delaware			Other Subsidiaries			Eliminations			Consolidation
Cash Flows from Operating Activities:
Net Income (Loss)	$	(619	)	$	(435	)	$	170		$	(311	)	$	587		$	(608	)
Adjustments to Reconcile Net Income(Loss) to Net Cash Provided (Used) by Operating Activities:
Charges from Parent or Subsidiary	(4		)	90			43			(129		)	—			—
Equity in (Earnings) Loss of Affiliates	680			132			(180		)	—			(632		)	—
Deferred Income Tax Provision (Benefit)	—			—			—			4			—			4
Other Adjustments	(134		)	7			(7		)	452			45			363
Net Cash Provided (Used) by Operating Activities	(77		)	(206		)	26			16			—			(241		)
Cash Flows from Investing Activities:
Capital Expenditures for Property, Plant and Equipment	—			—			—			(82		)	—			(82		)
Acquisition of Assets Held for Sale	—			—			—			(243		)	—			(243		)
Acquisition of Intellectual Property	—			—			—			(9		)	—			(9		)
Proceeds from Sale of Assets and Businesses, Net	—			—			—			25			—			25
Proceeds (Payments) from Sale of Businesses, Net	—			—			—			(1		)	—			(1		)
Other Investing Activities	—			—			—			(5		)	—			(5		)
Net Cash Provided (Used) by Investing Activities	—			—			—			(315		)	—			(315		)
Cash Flows from Financing Activities:
Borrowings (Repayments) Short-term Debt, Net	—			—			—			(96		)	—			(96		)
Borrowings (Repayments) Long-term Debt, Net	—			226			(89		)	78			—			215
Borrowings (Repayments) Between Subsidiaries, Net	78			(452		)	59			315			—			—
Other, Net	—			—			—			(20		)	—			(20		)
Net Cash Provided (Used) by Financing Activities	78			(226		)	(30		)	277			—			99
Effect of Exchange Rate Changes On Cash and Cash Equivalents	—			—			—			4			—			4
Net Increase (Decrease) in Cash and Cash Equivalents	1			(432		)	(4		)	(18		)	—			(453		)
Cash and Cash Equivalents at Beginning of Period	—			586			4			447			—			1,037
Cash and Cash Equivalents at End of Period	$	1		$	154		$	—		$	429		$	—		$	584

- Definition

The entire disclosure for condensed financial information, including the financial position, cash flows, and the results of operations of the registrant (parent company) as of the same dates or for the same periods for which audited consolidated financial statements are being presented. Alternatively, the details of this disclosure can be reported by the specific parent company taxonomy elements, indicating the appropriate date and period contexts in an instance document.

+ References + Details

Subsequent Events	6 Months Ended
Subsequent Events	Jun. 30, 2018
Subsequent Events [Abstract]
Subsequent Events	Subsequent Event On July 11, 2018, we entered into purchase and sale agreements with ADES to sell our land drilling rig operations in Algeria, Kuwait and Saudi Arabia, as well as two idle land rigs in Iraq, for an aggregate purchase price of $287.5 million in cash, subject to potential adjustments based on working capital, net cash, loss or destruction of rigs and drilling contract backlog. ADES has advanced $43 million of the purchase price in the form of a deposit, which will be held in escrow and released at closing for credit towards the purchase price. The transaction includes 31 land drilling rigs and related drilling contracts, as well as employees and contract personnel. We expect to close these transactions in a series of closings, most of which will be substantially complete in the second half of 2018.

General (Policies)	6 Months Ended
General (Policies)	Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Accounting	The accompanying unaudited Condensed Consolidated Financial Statements of Weatherford International plc (the “Company,” “Weatherford” or “Weatherford Ireland”) are prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) and include all adjustments (consisting of normal recurring adjustments) which, in our opinion, are considered necessary to present fairly our Condensed Consolidated Balance Sheets at June 30, 2018 and December 31, 2017, Condensed Consolidated Statements of Operations and Condensed Consolidated Statements of Comprehensive Loss for the three and six months ended June 30, 2018 and 2017 and Condensed Consolidated Statements of Cash Flows for the six months ended June 30, 2018 and 2017. When using phrases such as “we,” “us,” and “our,” the intent is to refer to Weatherford International plc, a public limited company organized under the law of Ireland, and its subsidiaries as a whole or on a regional basis, depending on the context in which the statements are made. Although we believe the disclosures in these financial statements are adequate, certain information relating to our organization and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted in this Form 10-Q pursuant to U.S. Securities and Exchange Commission (“SEC”) rules and regulations. These financial statements should be read in conjunction with the audited Consolidated Financial Statements for the year ended December 31, 2017 included in our Annual Report on Form 10-K. The results of operations for the three and six months ended June 30, 2018 are not necessarily indicative of the results expected for the year ending December 31, 2018.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amount of assets and liabilities at the date of the financial statements, the reported amounts of revenues and expenses during the reporting period, and disclosure of contingent assets and liabilities. On an on-going basis, we evaluate our estimates and assumptions, including those related to uncollectible accounts receivable, lower of cost or net realizable value of inventories, assets held for sale, derivative financial instruments, intangible assets and goodwill, property, plant and equipment (“PP&E”), income taxes, accounting for long-term contracts, self-insurance, foreign currency exchange rates, pension and post-retirement benefit plans, disputes, litigation, contingencies and share-based compensation. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results could differ from those estimates.
Principles of Consolidation	Principles of Consolidation We consolidate all wholly-owned subsidiaries, controlled joint ventures and variable interest entities where the Company has determined it is the primary beneficiary. Investments in affiliates in which we exercise significant influence over operating and financial policies are accounted for using the equity method. All material intercompany accounts and transactions have been eliminated in consolidation.
Reclassifications	Reclassifications Certain reclassifications of the financial statements and accompanying footnotes for the three and six months ended June 30, 2017 have been made to conform to the presentation for the three and six months ended June 30, 2018. See “Note 2 – New Accounting Pronouncements” for additional details regarding accounting changes impacting the Condensed Consolidated Financial Statements.
Foreign Currency Transactions and Translations Policy [Policy Text Block]	Currency Devaluation Charges For the second quarter and the first six months ended June 30, 2018, we recognized currency devaluation charges of $11 million and $37 million respectively. Devaluation of the Angolan kwanza totaling $11 million and $35 million in the second quarter and the first six months ended June 30, 2018, respectively, were substantially all of the charges recorded. The devaluation of the Angolan kwanza was due to a change in Angolan central bank policy in January 2018. For the six months ended June 30, 2017, we had no currency devaluation charges. Currency devaluation charges are included in current earnings in “Currency Devaluation Charges” on the accompanying Condensed Consolidated Statements of Operations.

New Accounting Pronouncements New Accounting Pronouncements (Policies)

6 Months Ended

Jun. 30, 2018

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

New Accounting Pronouncements

Accounting Changes

The cumulative effect of the changes made to our January 1, 2018 Condensed Consolidated Balance Sheet for the adoption of Topic 606, were as follows:



(Dollars in millions)	Balance at December 31, 2017			Adjustments Due to Topic 606		Balance at January 1, 2018
Assets and Liabilities:
Other Current Assets	$	332		$	10	$	342
Other Current Liabilities	690			2		692

Shareholders’ Equity:
Retained Deficit	(5,763		)	8		(5,755		)

The impact of adopting Topic 606 on the Company’s Condensed Consolidated Financial Statements for the first six months ended June 30, 2018 was less than $2 million.

Accounting Standards Issued Not Yet Adopted

New Accounting Pronouncements (Tables)

6 Months Ended

Jun. 30, 2018

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

Schedule of New Accounting Pronouncements and Changes in Accounting Principles

The cumulative effect of the changes made to our January 1, 2018 Condensed Consolidated Balance Sheet for the adoption of Topic 606, were as follows:



(Dollars in millions)	Balance at December 31, 2017			Adjustments Due to Topic 606		Balance at January 1, 2018
Assets and Liabilities:
Other Current Assets	$	332		$	10	$	342
Other Current Liabilities	690			2		692

Shareholders’ Equity:
Retained Deficit	(5,763		)	8		(5,755		)

Revenues (Tables)

6 Months Ended

Jun. 30, 2018

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue



	Three Months Ended June 30, 2018
(Dollars in millions)	Western Hemisphere		Eastern Hemisphere		Total Excluding Rental Revenues		Rental Revenues		Total Revenues
Product Lines:

Production	$	308	$	86	$	394	$	—	$	394
Completions	148		155		303		—		303
Drilling and Evaluation	141		180		321		20		341
Well Construction	87		230		317		93		410
Total	$	684	$	651	$	1,335	$	113	$	1,448



	Six Months Ended June 30, 2018
(Dollars in millions)	Western Hemisphere		Eastern Hemisphere		Total Excluding Rental Revenues		Rental Revenues		Total Revenues
Product Lines:

Production	$	594	$	181	$	775	$	—	$	775
Completions	305		291		596		1		597
Drilling and Evaluation	297		374		671		28		699
Well Construction	188		446		634		166		800
Total	$	1,384	$	1,292	$	2,676	$	195	$	2,871



	Three Months Ended June 30, 2018		Six Months Ended June 30, 2018
(Dollars in millions)
Geographic Areas:

United States	$	346	$	691
Latin America	270		496
Canada	68		197
Western Hemisphere	684		1,384

Middle East & North Africa	356		719
Europe/Sub-Sahara Africa/Russia	219		441
Asia	76		132
Eastern Hemisphere	651		1,292

Total Product and Service Revenue before Rental Revenues	1,335		2,676
Rental Revenues	113		195
Total Revenues	$	1,448	$	2,871

Schedule of Contract with Customer, Asset and Liability

Significant changes in the contract assets and liabilities balances during the period are as follows:



(Dollars in millions)	Contract Assets			Contract Liabilities
Balance, as of January 1, 2018	$	10		$	42
Revenue recognized that was included in the deferred revenue balance at the beginning of the period	—			(31		)
Increase due to cash received, excluding amount recognized as revenue during the period	—			63
Increase due to revenue recognized during the period but contingent on future performance	5			—
Transferred to receivables from contract assets recognized at the beginning of the period	(2		)	—
Balance, as of June 30, 2018	$	13		$	74

The following table provides information about receivables for product and services included in “Accounts Receivable, Net” at June 30, 2018 and January 1, 2018, respectively:

Schedule of Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction



(Dollars in millions)	2018		2019		2020		2021		Thereafter		Total
Service revenue	$	37	$	54	$	17	$	—	$	—	$	108
Product revenue	10		1		—		—		—		11
Total	$	47	$	55	$	17	$	—	$	—	$	119

Restructuring and Transformation Charges (Tables)

6 Months Ended

Jun. 30, 2018

Restructuring and Related Activities [Abstract]

Schedule of Restructuring Charges

The following tables present the components of restructuring charges by segment for the second quarter and six months ended June 30, 2018 and 2017.



	Three Months Ended June 30, 2018
					Total
(Dollars in millions)	Severance		Other		Severance and
Transformation Plan	Charges		Charges		Other Charges
Western Hemisphere	$	11	$	2	$	13
Eastern Hemisphere	14		4		18
Corporate	4		3		7
Total	$	29	$	9	$	38



	Three Months Ended June 30, 2017
					Total
(Dollars in millions)	Severance		Other		Severance and
2016-17 Plan	Charges		Charges		Other Charges
Western Hemisphere	$	10	$	6	$	16
Eastern Hemisphere	11		3		14
Corporate	1		—		1
Total	$	22	$	9	$	31



	Six Months Ended June 30, 2018
					Total
(Dollars in millions)	Severance		Other		Severance and
Transformation Plan	Charges		Charges		Other Charges
Western Hemisphere	$	15	$	2	$	17
Eastern Hemisphere	18		9		27
Corporate	7		12		19
Total	$	40	$	23	$	63



	Six Months Ended June 30, 2017
					Total
(Dollars in millions)	Severance		Other		Severance and
2016-17 Plan	Charges		Charges		Other Charges
Western Hemisphere	$	15	$	24	$	39
Eastern Hemisphere	18		22		40
Corporate	23		4		27
Total	$	56	$	50	$	106



	At June 30, 2018
	Transformation Plan				2016-17 and Prior Plans				Total
									Severance
	Severance		Other		Severance		Other		and Other
(Dollars in millions)	Liability		Liability		Liability		Liability		Liability
Western Hemisphere	$	7	$	—	$	2	$	12	$	21
Eastern Hemisphere	2		2		2		17		23
Corporate	8		5		6		—		19
Total	$	17	$	7	$	10	$	29	$	63

Schedule of Restructuring Reserve by Type of Cost



	At June 30, 2018
	Transformation Plan				2016-17 and Prior Plans				Total
									Severance
	Severance		Other		Severance		Other		and Other
(Dollars in millions)	Liability		Liability		Liability		Liability		Liability
Western Hemisphere	$	7	$	—	$	2	$	12	$	21
Eastern Hemisphere	2		2		2		17		23
Corporate	8		5		6		—		19
Total	$	17	$	7	$	10	$	29	$	63

The following table presents the restructuring liability activity for the first six months of 2018.



			Six Months Ended June 30, 2018
(Dollars in millions)	Accrued Balance at December 31, 2017		Charges		Cash Payments			Other			Accrued Balance at June 30, 2018
Transformation Plan
Severance liability	$	—	$	40	$	(19	)	$	(4	)	$	17
Other restructuring liability	—		$	23	$	(15	)	$	(1	)	$	7

2016-17 and Prior Plans:
Severance liability	21		—		(11		)	—			10
Other restructuring liability	40		—		(10		)	(1		)	29
Total severance and other restructuring liability	$	61	$	63	$	(55	)	$	(6	)	$	63

Inventories, Net (Tables)

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Components of Inventory

Inventories, net of reserves, by category were as follows:



(Dollars in millions)	June 30, 2018		December 31, 2017
Raw materials, components and supplies	$	147	$	144
Work in process	53		47
Finished goods	943		1,043
	$	1,143	$	1,234

Goodwill (Tables)

6 Months Ended

Jun. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The changes in the carrying amount of goodwill by reportable segment for the six months ended June 30, 2018, were as follows:



(Dollars in millions)	Western Hemisphere			Eastern Hemisphere			Total
Balance at December 31, 2017	$	1,958		$	769		$	2,727
Acquisitions	—			23			23
Dispositions	(8		)	—			(8		)
Reclassification to assets held for sale	(43		)	(16		)	(59		)
Foreign currency translation adjustments	(46		)	(16		)	(62		)
Balance at June 30, 2018	$	1,861		$	760		$	2,621

Short-term Borrowings and Other Debt Obligations (Tables)

6 Months Ended

Jun. 30, 2018

Line of Credit Facility [Line Items]

Schedule of Short-term Debt [Table Text Block]



(Dollars in millions)	June 30, 2018		December 31, 2017
Revolving Credit Agreement	$	225	$	—
Other Short-term Loans	7		11
Current Portion of Long-term Debt	63		137
Short-term Borrowings and Current Portion of Long-term Debt	$	295	$	148

Schedule of Line of Credit Facilities [Table Text Block]

At June 30, 2018, we had $506 million available under the Credit Agreements and the following table summarizes our borrowing availability under these agreements:



(Dollars in millions)	June 30, 2018
Facilities	$	1,250
Less uses of facilities:
Revolving Credit Agreement	225
Letters of Credit	169
Secured Term Loan Principal Borrowing	350
Borrowing Availability	$	506

Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

The fair value and carrying value of our senior notes were as follows:



(Dollars in millions)	June 30, 2018		December 31, 2017
Fair Value	$	6,951	$	7,060
Carrying Value	7,267		7,218

Derivative Instruments (Tables)

6 Months Ended

Jun. 30, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivatives Instruments in Statements of Financial Performance and Financial Position

The total estimated fair values of our foreign currency forward contracts and warrant derivative were as follows:



(Dollars in millions)	June 30, 2018			December 31, 2017			Classification
Derivative assets not designated as hedges:
Foreign currency forward contracts	$	3		$	5		Other Current Assets

Derivative liabilities not designated as hedges:
Foreign currency forward contracts	(3		)	(4		)	Other Current Liabilities
Warrant on Weatherford Shares	(14		)	(70		)	Other Current Liabilities

The amount of derivative instruments’ gain or (loss) on the Condensed Consolidated Statements of Operations is in the table below.



	Three Months Ended June 30,						Six Months Ended June 30,
(Dollars in millions)	2018			2017			2018		2017			Classification
Foreign currency forward contracts	$	(1	)	$	(15	)	$	—	$	(22	)	Other Income (Expense), Net
Warrant on Weatherford Shares	10			127			56		65			Warrant Fair Value Adjustment

Shareholders' Equity (Tables)

6 Months Ended

Jun. 30, 2018

Equity [Abstract]

Schedule of Stockholders' Equity

The following summarizes our shareholders’ equity activity for the first six months of 2018 and 2017:



(Dollars in millions)	Par Value of Issued Shares		Capital in Excess of Par Value		Retained Earnings (Deficit)			Accumulated Other Comprehensive Income (Loss)			Non-controlling Interests			Total Shareholders’ Equity (Deficiency)
Balance at December 31, 2016	$	1	$	6,571	$	(2,950	)	$	(1,610	)	$	56		$	2,068
Net Income (Loss)	—		—		(619		)	—			11			(608		)
Other Comprehensive Income	—		—		—			33			—			33
Dividends Paid to Noncontrolling Interests	—		—		—			—			(10		)	(10		)
Equity Awards Granted, Vested and Exercised	—		41		—			—			—			41
Balance at June 30, 2017	$	1	$	6,612	$	(3,569	)	$	(1,577	)	$	57		$	1,524

Balance at December 31, 2017	$	1	$	6,655	$	(5,763	)	$	(1,519	)	$	55		$	(571	)
Net Income (Loss)	—		—		(509		)	—			8			(501		)
Other Comprehensive Income	—		—		—			(160		)	—			(160		)
Dividends Paid to Noncontrolling Interests	—		—		—			—			(6		)	(6		)
Equity Awards Granted, Vested and Exercised	—		29		—			—			—			29
Adoption of Intra-Entity Transfers of Assets Other Than Inventory and Revenue from Contracts with Customers	—		—		(97		)	—			—			(97		)
Other	—		4		—			—			(10		)	(6		)
Balance at June 30, 2018	$	1	$	6,688	$	(6,369	)	$	(1,679	)	$	47		$	(1,312	)

Schedule of Accumulated Other Comprehensive Income (Loss)

The following table presents the changes in our accumulated other comprehensive loss by component for the first six months of 2018 and 2017:



(Dollars in millions)	Currency Translation Adjustment			Defined Benefit Pension			Deferred Loss on Derivatives			Total
Balance at December 31, 2016	$	(1,614	)	$	13		$	(9	)	$	(1,610	)

Other Comprehensive Income before Reclassifications	74			—			—			74
Reclassifications	—			(41		)	—			(41		)
Net activity	74			(41		)	—			33

Balance at June 30, 2017	$	(1,540	)	$	(28	)	$	(9	)	$	(1,577	)

Balance at December 31, 2017	$	(1,484	)	$	(26	)	$	(9	)	$	(1,519	)

Other Comprehensive Income before Reclassifications	(161		)	—			—			(161		)
Reclassifications	—			1			—			1
Net activity	(161		)	1			—			(160		)

Balance at June 30, 2018	$	(1,645	)	$	(25	)	$	(9	)	$	(1,679	)

Earnings per Share (Tables)

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Schedule of Weighted Average Number of Shares

The following table presents our basic and diluted weighted average shares outstanding for the second quarter and the first six months of 2018 and 2017:



	Three Months Ended June 30,		Six Months Ended June 30,
(Shares in millions)	2018	2017	2018	2017
Basic and Diluted weighted average shares outstanding	997	990	995	989

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following table discloses the number of anti-dilutive shares excluded for the second quarter and the first six months of 2018 and 2017:



	Three Months Ended June 30,		Six Months Ended June 30,
(Shares in millions)	2018	2017	2018	2017
Anti-dilutive potential shares due to net loss	250	250	250	250

Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award

We recognized the following employee share-based compensation expense during the second quarter and the first six months of 2018 and 2017:



	Three Months Ended June 30,				Six Months Ended June 30,
(Dollars in millions)	2018		2017		2018		2017
Share-based compensation	$	14	$	17	$	27	$	41
Related tax benefit	—		—		—		—

Segment Information (Tables)

6 Months Ended

Jun. 30, 2018

Segment Reporting [Abstract]

Financial information by segment



	Three Months Ended June 30, 2018
(Dollars in millions)	Revenues		Income (Loss) from Operations			Depreciation and Amortization
Western Hemisphere	$	769	$	50		$	56
Eastern Hemisphere	679		19			84
	1,448		69			140
Corporate General and Administrative			(34		)	4
Restructuring and Transformation Charges			(38		)
Long-Lived Asset Impairments, Asset Write-Downs and Other ^(a)			(70		)
Total	$	1,448	$	(73	)	$	144


(a)	Includes long-lived asset impairments and other asset write-downs, partially offset by gains on property sales and a reduction of a contingency reserve on a legacy contract.



	Three Months Ended June 30, 2017
(Dollars in millions)	Revenues		Loss from Operations			Depreciation and Amortization
Western Hemisphere	$	678	$	(51	)	$	92
Eastern Hemisphere	685		(22		)	111
	1,363		(73		)	203
Corporate General and Administrative			(33		)	1
Restructuring Charges			(31		)
Asset Write-Downs and Other			(8		)
Total	$	1,363	$	(145	)	$	204



	Six Months Ended June 30, 2018
(Dollars in millions)	Revenues		Income (Loss) from Operations			Depreciation and Amortization
Western Hemisphere	$	1,525	$	74		$	116
Eastern Hemisphere	1,346		35			170
	2,871		109			286
Corporate General and Administrative			(70		)	5
Restructuring and Transformation Charges			(63		)
Long-Lived Asset Impairments, Asset Write-Downs and Other ^(b)			(88		)
Total	$	2,871	$	(112	)	$	291


(b)	Includes long-lived asset impairments, other asset write-downs and inventory charges, partially offset by gains on purchase of the remaining interest in a joint venture, property sales and a reduction of a contingency reserve on a legacy contract.



	Six Months Ended June 30, 2017
(Dollars in millions)	Revenues		Loss from Operations			Depreciation and Amortization
Western Hemisphere	$	1,411	$	(81	)	$	183
Eastern Hemisphere	1,338		(81		)	226
	2,749		(162		)	409
Corporate General and Administrative			(66		)	3
Restructuring Charges			(106		)
Asset Write-Downs and Other			(25		)
Total	$	2,749	$	(359	)	$	412

Condensed Consolidating Financial Statements (Tables)

6 Months Ended

Jun. 30, 2018

Condensed Financial Information of Parent Company Only Disclosure [Abstract]

Condensed Consolidating Statement of Operations

Condensed Consolidating Statement of Operations and

Comprehensive Income (Loss)

Three Months Ended June 30, 2018

(Unaudited)



(Dollars in millions)	Weatherford Ireland			Weatherford Bermuda			Weatherford Delaware			Other Subsidiaries			Eliminations			Consolidation
Revenues	$	—		$	—		$	—		$	1,448		$	—		$	1,448
Costs and Expenses	(5		)	—			—			(1,516		)	—			(1,521		)
Operating Income (Loss)	(5		)	—			—			(68		)	—			(73		)

Other Income (Expense):
Interest Expense, Net	—			(137		)	(25		)	5			5			(152		)
Intercompany Charges, Net	3			5			(40		)	(81		)	113			—
Equity in Subsidiary Income (Loss)	(272		)	28			(23		)	—			267			—
Other, Net	10			10			11			(28		)	(11		)	(8		)
Income (Loss) Before Income Taxes	(264		)	(94		)	(77		)	(172		)	374			(233		)
(Provision) Benefit for Income Taxes	—			—			—			(26		)	—			(26		)
Net Income (Loss)	(264		)	(94		)	(77		)	(198		)	374			(259		)
Noncontrolling Interests	—			—			—			5			—			5
Net Income (Loss) Attributable to Weatherford	$	(264	)	$	(94	)	$	(77	)	$	(203	)	$	374		$	(264	)
Comprehensive Income (Loss) Attributable to Weatherford	$	(429	)	$	(126	)	$	(55	)	$	(369	)	$	550		$	(429	)

Condensed Consolidating Statement of Operations and

Comprehensive Income (Loss)

Three Months Ended June 30, 2017

(Unaudited)



(Dollars in millions)	Weatherford Ireland			Weatherford Bermuda			Weatherford Delaware			Other Subsidiaries			Eliminations			Consolidation
Revenues	$	—		$	—		$	—		$	1,363		$	—		$	1,363
Costs and Expenses	(5		)	19			1			(1,523		)	—			(1,508		)
Operating Income (Loss)	(5		)	19			1			(160		)	—			(145		)

Other Income (Expense):
Interest Expense, Net	—			(144		)	1			11			(6		)	(138		)
Intercompany Charges, Net	3			(82		)	(41		)	120			—			—
Equity in Subsidiary Income	(296		)	(304		)	(39		)	—			639			—
Other, Net	127			247			191			(237		)	(193		)	135
Income (Loss) Before Income Taxes	(171		)	(264		)	113			(266		)	440			(148		)
(Provision) Benefit for Income Taxes	—			—			—			(17		)	—			(17		)
Net Income (Loss)	(171		)	(264		)	113			(283		)	440			(165		)
Noncontrolling Interests	—			—			—			6			—			6
Net Income (Loss) Attributable to Weatherford	$	(171	)	$	(264	)	$	113		$	(289	)	$	440		$	(171	)
Comprehensive Income (Loss) Attributable to Weatherford	$	(181	)	$	(290	)	$	128		$	(298	)	$	460		$	(181	)

Condensed Consolidating Statement of Operations and

Comprehensive Income (Loss)

Six Months Ended June 30, 2018

(Unaudited)



(Dollars in millions)	Weatherford Ireland			Weatherford Bermuda			Weatherford Delaware			Other Subsidiaries			Eliminations			Consolidation
Revenues	$	—		$	—		$	—		$	2,871		$	—		$	2,871
Costs and Expenses	(3		)	—			—			(2,980		)	—			(2,983		)
Operating Income (Loss)	(3		)	—			—			(109		)	—			(112		)

Other Income (Expense):
Interest Expense, Net	—			(281		)	(39		)	9			10			(301		)
Intercompany Charges, Net	(15		)	2			(29		)	(675		)	717			—
Equity in Subsidiary Income (Loss)	(547		)	(322		)	(156		)	—			1,025			—
Other, Net	56			100			133			(185		)	(134		)	(30		)
Income (Loss) Before Income Taxes	(509		)	(501		)	(91		)	(960		)	1,618			(443		)
(Provision) Benefit for Income Taxes	—			—			—			(58		)	—			(58		)
Net Income (Loss)	(509		)	(501		)	(91		)	(1,018		)	1,618			(501		)
Noncontrolling Interests	—			—			—			8			—			8
Net Income (Loss) Attributable to Weatherford	$	(509	)	$	(501	)	$	(91	)	$	(1,026	)	$	1,618		$	(509	)
Comprehensive Income (Loss) Attributable to Weatherford	$	(669	)	$	(527	)	$	(57	)	$	(1,187	)	$	1,771		$	(669	)

Condensed Consolidating Statement of Operations and

Comprehensive Income (Loss)

Six Months Ended June 30, 2017

(Unaudited)



(Dollars in millions)	Weatherford Ireland			Weatherford Bermuda			Weatherford Delaware			Other Subsidiaries			Eliminations			Consolidation
Revenues	$	—		$	—		$	—		$	2,749		$	—		$	2,749
Costs and Expenses	(8		)	39			1			(3,140		)	—			(3,108		)
Operating Income (Loss)	(8		)	39			1			(391		)	—			(359		)

Other Income (Expense):
Interest Expense, Net	—			(283		)	(20		)	15			9			(279		)
Intercompany Charges, Net	4			(90		)	(43		)	129			—			—
Equity in Subsidiary Income	(680		)	(132		)	180			—			632			—
Other, Net	65			31			52			(14		)	(54		)	80
Income (Loss) Before Income Taxes	(619		)	(435		)	170			(261		)	587			(558		)
(Provision) Benefit for Income Taxes	—			—			—			(50		)	—			(50		)
Net Income (Loss)	(619		)	(435		)	170			(311		)	587			(608		)
Noncontrolling Interests	—			—			—			11			—			11
Net Income (Loss) Attributable to Weatherford	$	(619	)	$	(435	)	$	170		$	(322	)	$	587		$	(619	)
Comprehensive Income (Loss) Attributable to Weatherford	$	(586	)	$	(466	)	$	102		$	(288	)	$	652		$	(586	)

Condensed Consolidating Balance Sheet

Condensed Consolidating Statement of Operations and

Comprehensive Income (Loss)

Six Months Ended June 30, 2018

(Unaudited)



(Dollars in millions)	Weatherford Ireland			Weatherford Bermuda			Weatherford Delaware			Other Subsidiaries			Eliminations			Consolidation
Revenues	$	—		$	—		$	—		$	2,871		$	—		$	2,871
Costs and Expenses	(3		)	—			—			(2,980		)	—			(2,983		)
Operating Income (Loss)	(3		)	—			—			(109		)	—			(112		)

Other Income (Expense):
Interest Expense, Net	—			(281		)	(39		)	9			10			(301		)
Intercompany Charges, Net	(15		)	2			(29		)	(675		)	717			—
Equity in Subsidiary Income (Loss)	(547		)	(322		)	(156		)	—			1,025			—
Other, Net	56			100			133			(185		)	(134		)	(30		)
Income (Loss) Before Income Taxes	(509		)	(501		)	(91		)	(960		)	1,618			(443		)
(Provision) Benefit for Income Taxes	—			—			—			(58		)	—			(58		)
Net Income (Loss)	(509		)	(501		)	(91		)	(1,018		)	1,618			(501		)
Noncontrolling Interests	—			—			—			8			—			8
Net Income (Loss) Attributable to Weatherford	$	(509	)	$	(501	)	$	(91	)	$	(1,026	)	$	1,618		$	(509	)
Comprehensive Income (Loss) Attributable to Weatherford	$	(669	)	$	(527	)	$	(57	)	$	(1,187	)	$	1,771		$	(669	)

Condensed Consolidating Statement of Operations and

Comprehensive Income (Loss)

Six Months Ended June 30, 2017

(Unaudited)



(Dollars in millions)	Weatherford Ireland			Weatherford Bermuda			Weatherford Delaware			Other Subsidiaries			Eliminations			Consolidation
Revenues	$	—		$	—		$	—		$	2,749		$	—		$	2,749
Costs and Expenses	(8		)	39			1			(3,140		)	—			(3,108		)
Operating Income (Loss)	(8		)	39			1			(391		)	—			(359		)

Other Income (Expense):
Interest Expense, Net	—			(283		)	(20		)	15			9			(279		)
Intercompany Charges, Net	4			(90		)	(43		)	129			—			—
Equity in Subsidiary Income	(680		)	(132		)	180			—			632			—
Other, Net	65			31			52			(14		)	(54		)	80
Income (Loss) Before Income Taxes	(619		)	(435		)	170			(261		)	587			(558		)
(Provision) Benefit for Income Taxes	—			—			—			(50		)	—			(50		)
Net Income (Loss)	(619		)	(435		)	170			(311		)	587			(608		)
Noncontrolling Interests	—			—			—			11			—			11
Net Income (Loss) Attributable to Weatherford	$	(619	)	$	(435	)	$	170		$	(322	)	$	587		$	(619	)
Comprehensive Income (Loss) Attributable to Weatherford	$	(586	)	$	(466	)	$	102		$	(288	)	$	652		$	(586	)

Condensed Consolidating Balance Sheet

June 30, 2018

(Unaudited)



(Dollars in millions)	Weatherford Ireland			Weatherford Bermuda		Weatherford Delaware		Other Subsidiaries		Eliminations			Consolidation
Current Assets:
Cash and Cash Equivalents	$	—		$	65	$	—	$	350	$	—		$	415
Other Current Assets	1			—		496		3,315		(534		)	3,278
Total Current Assets	1			65		496		3,665		(534		)	3,693

Equity Investments in Affiliates	(1,343		)	7,675		7,701		776		(14,809		)	—
Intercompany Receivables, Net	2			—		—		3,008		(3,010		)	—
Other Assets	—			6		4		5,276		—			5,286
Total Assets	$	(1,340	)	$	7,746	$	8,201	$	12,725	$	(18,353	)	$	8,979

Current Liabilities:
Short-term Borrowings and Current Portion of Long-Term Debt	$	—		$	276	$	—	$	19	$	—		$	295
Accounts Payable and Other Current Liabilities	19			168		—		2,251		(533		)	1,905
Total Current Liabilities	19			444		—		2,270		(533		)	2,200

Long-term Debt	—			6,644		763		148		79			7,634
Intercompany Payables, Net	—			183		2,827		—		(3,010		)	—
Other Long-term Liabilities	—			11		3		446		(3		)	457
Total Liabilities	19			7,282		3,593		2,864		(3,467		)	10,291

Weatherford Shareholders’ Equity	(1,359		)	464		4,608		9,814		(14,886		)	(1,359		)
Noncontrolling Interests	—			—		—		47		—			47
Total Liabilities and Shareholders’ Equity	$	(1,340	)	$	7,746	$	8,201	$	12,725	$	(18,353	)	$	8,979

Condensed Consolidating Balance Sheet

December 31, 2017



(Dollars in millions)	Weatherford Ireland			Weatherford Bermuda		Weatherford Delaware		Other Subsidiaries		Eliminations			Consolidation
Current Assets:
Cash and Cash Equivalents	$	—		$	195	$	—	$	418	$	—		$	613
Other Current Assets	1			—		516		3,298		(550		)	3,265
Total Current Assets	1			195		516		3,716		(550		)	3,878

Equity Investments in Affiliates	(460		)	7,998		8,009		530		(16,077		)	—
Intercompany Receivables, Net	—			—		—		4,213		(4,213		)	—
Other Assets	—			8		4		5,857		—			5,869
Total Assets	$	(459	)	$	8,201	$	8,529	$	14,316	$	(20,840	)	$	9,747

Current Liabilities:
Short-term Borrowings and Current Portion of Long-Term Debt	$	—		$	128	$	—	$	20	$	—		$	148
Accounts Payable and Other Current Liabilities	10			183		—		2,439		(550		)	2,082
Total Current Liabilities	10			311		—		2,459		(550		)	2,230

Long-term Debt	—			7,127		166		159		89			7,541
Intercompany Payables, Net	87			242		3,884		—		(4,213		)	—
Other Long-term Liabilities	70			146		136		332		(137		)	547
Total Liabilities	167			7,826		4,186		2,950		(4,811		)	10,318

Weatherford Shareholders’ Equity	(626		)	375		4,343		11,311		(16,029		)	(626		)
Noncontrolling Interests	—			—		—		55		—			55
Total Liabilities and Shareholders’ Equity	$	(459	)	$	8,201	$	8,529	$	14,316	$	(20,840	)	$	9,747

Condensed Consolidating Statement of Cash Flows

Six Months Ended June 30, 2018

(Unaudited)



(Dollars in millions)	Weatherford Ireland			Weatherford Bermuda			Weatherford Delaware			Other Subsidiaries			Eliminations			Consolidation
Cash Flows from Operating Activities:
Net Income (Loss)	$	(509	)	$	(501	)	$	(91	)	$	(1,018	)	$	1,618		$	(501	)
Adjustments to Reconcile Net Income (Loss) to Net Cash Provided (Used) by Operating Activities:
Charges from Parent or Subsidiary	15			(2		)	29			675			(717		)	—
Equity in (Earnings) Loss of Affiliates	547			322			156			—			(1,025		)	—
Deferred Income Tax Provision (Benefit)	—			—			—			(5		)				(5		)
Other Adjustments	70			565			(166		)	(402		)	124			191
Net Cash Provided (Used) by Operating Activities	123			384			(72		)	(750		)	—			(315		)
Cash Flows from Investing Activities:
Capital Expenditures for Property, Plant and Equipment	—			—			—			(68		)	—			(68		)
Capital Expenditures for Assets Held for Sale	—			—			—			(18		)	—			(18		)
Acquisitions of Businesses, Net of Cash Acquired	—			—			—			4			—			4
Acquisition of Intellectual Property	—			—			—			(7		)	—			(7		)
Proceeds from Sale of Assets	—			—			—			50			—			50
Proceeds from Sale of Businesses and Equity Investment, Net	—			—			—			25			—			25
Net Cash Provided (Used) by Investing Activities	—			—			—			(14		)	—			(14		)
Cash Flows from Financing Activities:
Borrowings (Repayments) Short-term Debt, Net	—			90			—			(3		)	—			87
Borrowings (Repayments) Long-term Debt, Net	—			(450		)	587			(4		)	—			133
Borrowings (Repayments) Between Subsidiaries, Net	(123		)	(154		)	(515		)	792			—			—
Other, Net	—			—			—			(48		)	—			(48		)
Net Cash Provided (Used) by Financing Activities	(123		)	(514		)	72			737			—			172
Effect of Exchange Rate Changes On Cash and Cash Equivalents	—			—			—			(41		)	—			(41		)
Net Increase (Decrease) in Cash and Cash Equivalents	—			(130		)	—			(68		)	—			(198		)
Cash and Cash Equivalents at Beginning of Period	—			195			—			418			—			613
Cash and Cash Equivalents at End of Period	$	—		$	65		$	—		$	350		$	—		$	415

Condensed Consolidating Statement of Cash Flows

Six Months Ended June 30, 2017

(Unaudited)



(Dollars in millions)	Weatherford Ireland			Weatherford Bermuda			Weatherford Delaware			Other Subsidiaries			Eliminations			Consolidation
Cash Flows from Operating Activities:
Net Income (Loss)	$	(619	)	$	(435	)	$	170		$	(311	)	$	587		$	(608	)
Adjustments to Reconcile Net Income(Loss) to Net Cash Provided (Used) by Operating Activities:
Charges from Parent or Subsidiary	(4		)	90			43			(129		)	—			—
Equity in (Earnings) Loss of Affiliates	680			132			(180		)	—			(632		)	—
Deferred Income Tax Provision (Benefit)	—			—			—			4			—			4
Other Adjustments	(134		)	7			(7		)	452			45			363
Net Cash Provided (Used) by Operating Activities	(77		)	(206		)	26			16			—			(241		)
Cash Flows from Investing Activities:
Capital Expenditures for Property, Plant and Equipment	—			—			—			(82		)	—			(82		)
Acquisition of Assets Held for Sale	—			—			—			(243		)	—			(243		)
Acquisition of Intellectual Property	—			—			—			(9		)	—			(9		)
Proceeds from Sale of Assets and Businesses, Net	—			—			—			25			—			25
Proceeds (Payments) from Sale of Businesses, Net	—			—			—			(1		)	—			(1		)
Other Investing Activities	—			—			—			(5		)	—			(5		)
Net Cash Provided (Used) by Investing Activities	—			—			—			(315		)	—			(315		)
Cash Flows from Financing Activities:
Borrowings (Repayments) Short-term Debt, Net	—			—			—			(96		)	—			(96		)
Borrowings (Repayments) Long-term Debt, Net	—			226			(89		)	78			—			215
Borrowings (Repayments) Between Subsidiaries, Net	78			(452		)	59			315			—			—
Other, Net	—			—			—			(20		)	—			(20		)
Net Cash Provided (Used) by Financing Activities	78			(226		)	(30		)	277			—			99
Effect of Exchange Rate Changes On Cash and Cash Equivalents	—			—			—			4			—			4
Net Increase (Decrease) in Cash and Cash Equivalents	1			(432		)	(4		)	(18		)	—			(453		)
Cash and Cash Equivalents at Beginning of Period	—			586			4			447			—			1,037
Cash and Cash Equivalents at End of Period	$	1		$	154		$	—		$	429		$	—		$	584

New Accounting Pronouncements New Accounting Pronouncements - Topic 606 (Details) - USD ($) $ in Millions	Jun. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Other Current Assets	$ 342	$ 342	$ 332
Other Liabilities, Current	668	692	690
Retained Deficit	$ (6,369)	(5,755)	(5,763)
Calculated under Revenue Guidance in Effect before Topic 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Other Current Assets			332
Other Liabilities, Current			690
Retained Deficit			$ (5,763)
Adjustments Due to Topic 606 \| Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Other Current Assets		10
Other Liabilities, Current		2
Retained Deficit		$ 8

New Accounting Pronouncements New Accounting Pronouncements - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of income	$ 1,521	$ 1,508	$ 2,983	$ 3,108
Reclassification of income	(7)	8	(15)	15
Prepaid taxes					$ 105
Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Impact of adoption (less than)	$ 2		$ 2
Accounting Standards Update 2017-07
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of income		18		36
Reclassification of income		$ 18		$ 36

Revenues - Major Product Line (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	$ 1,335		$ 2,676
Rental Revenues	113		195
Total Revenues	1,448	$ 1,363	2,871	$ 2,749
Production
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	394		775
Rental Revenues	0		0
Total Revenues	394		775
Completions
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	303		596
Rental Revenues	0		1
Total Revenues	303		597
Drilling and Evaluation
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	321		671
Rental Revenues	20		28
Total Revenues	341		699
Well Construction
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	317		634
Rental Revenues	93		166
Total Revenues	410		800
Western Hemisphere
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	684		1,384
Western Hemisphere \| Production
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	308		594
Western Hemisphere \| Completions
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	148		305
Western Hemisphere \| Drilling and Evaluation
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	141		297
Western Hemisphere \| Well Construction
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	87		188
Eastern Hemisphere
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	651		1,292
Eastern Hemisphere \| Production
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	86		181
Eastern Hemisphere \| Completions
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	155		291
Eastern Hemisphere \| Drilling and Evaluation
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	180		374
Eastern Hemisphere \| Well Construction
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	$ 230		$ 446

Revenues - Geographic Areas (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	$ 1,335		$ 2,676
Rental Revenues	113		195
Total Revenues	1,448	$ 1,363	2,871	$ 2,749
Western Hemisphere
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	684		1,384
Western Hemisphere \| United States
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	346		691
Western Hemisphere \| Latin America
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	270		496
Western Hemisphere \| Canada
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	68		197
Eastern Hemisphere
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	651		1,292
Eastern Hemisphere \| Middle East and North Africa
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	356		719
Eastern Hemisphere \| Europe, Sub-Sahara Africa, Russia
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	219		441
Eastern Hemisphere \| Asia
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	$ 76		$ 132

Revenues - Receivables (Details) - USD ($) $ in Millions	Jun. 30, 2018	Jan. 01, 2018
Revenue from Contract with Customer [Abstract]
Receivables for Product and Services in Accounts Receivable, Net	$ 1,070	$ 1,081

Revenues - Contract Assets and Liabilities (Details) $ in Millions	6 Months Ended
	Jun. 30, 2018 USD ($)
Contract Assets
Balance, as of January 1, 2018	$ 10
Increase due to revenue recognized during the period but contingent on future performance	5
Transferred to receivables from contract assets recognized at the beginning of the period	(2)
Balance, as of June 30, 2018	13
Contract Liabilities
Balance, as of January 1, 2018	42
Revenue recognized that was included in the deferred revenue balance at the beginning of the period	(31)
Increase due to cash received, excluding amount recognized as revenue during the period	63
Balance, as of June 30, 2018	$ 74

Revenues Revenues - Narrative (Details)	6 Months Ended
Revenues Revenues - Narrative (Details)	Jun. 30, 2018
Minimum
Disaggregation of Revenue [Line Items]
Product warranty period	1 year
Maximum
Disaggregation of Revenue [Line Items]
Product warranty period	5 years

Business Combinations and Divestitures - Acquisitions (Details) - USD ($) $ in Millions	Mar. 26, 2018	Jun. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Goodwill		$ 2,621		$ 2,727
Other Current Assets		$ 342	$ 342	$ 332
Joint Venture in Qatar
Business Acquisition [Line Items]
Percentage of voting interests acquired	50.00%
Consideration transferred	$ 87
Cash	$ 72
Period of additional payment after closing	2 years
Contingent consideration, liability	$ 15
Equity interest in acquiree, remeasurement gain	12
Intangible assets	26
Property, plant, and equipment	25
Goodwill	23
Other Current Assets	16
Liabilities, other	43
Joint Venture in Qatar \| Paid in Accordance with Closing Terms through the Joint Venture
Business Acquisition [Line Items]
Cash	48
Joint Venture in Qatar \| Will be Made Two Years after Closing
Business Acquisition [Line Items]
Cash	$ 24

Business Combinations and Divestitures - Divestitures Narrative (Details) - Discontinued Operations, Disposed of by Sale - Conventional Continuous Sucker Rod Business [Member] $ in Millions	Mar. 28, 2018 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Consideration	$ 25
Gain (Loss) on Disposition of Business	2
Assets	14
Disposal Group, Including Discontinued Operation, Goodwill	8
Inventory	$ 1

Business Combinations and Divestitures - Held for Sale (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of Long-Lived Assets to be Disposed of	$ 92	$ 0
Assets Held for Sale	489		$ 359
Property, plant and equipment	2,273		$ 2,708
Land Drilling Rigs
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of Long-Lived Assets to be Disposed of	82
Discontinued Operations, Held-for-sale \| Land Drilling Rigs
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets	356
Disposal Group, Including Discontinued Operation, Goodwill	59
Inventory	$ 74

Restructuring and Transformation Charges (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges	$ 38	$ 31	$ 63	$ 106
Transformation Plan [Member]
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges	38		63
Transformation Plan [Member] \| Other Restructuring
Restructuring Cost and Reserve [Line Items]
Other restructuring costs	9		23
Transformation Plan [Member] \| Employee Severance
Restructuring Cost and Reserve [Line Items]
Severance costs	29		$ 40
Transformation Plan [Member] \| Other Restructuring Less Asset Write-Offs [Member]
Restructuring Cost and Reserve [Line Items]
Other restructuring costs	$ 9
2016-17 Plan [Member]
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges		31		106
2016-17 Plan [Member] \| Other Restructuring
Restructuring Cost and Reserve [Line Items]
Other restructuring costs		9		50
Asset Impairment Charges				12
2016-17 Plan [Member] \| Employee Severance
Restructuring Cost and Reserve [Line Items]
Severance costs		22		56
2016-17 Plan [Member] \| Other Restructuring excluding write-downs [Member]
Restructuring Cost and Reserve [Line Items]
Other restructuring costs		$ 9		$ 38

Restructuring and Transformation Charges (Restructuring Charges) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges	$ 38	$ 31	$ 63	$ 106
2016-17 Plan [Member]
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges		31		106
2016-17 Plan [Member] \| Western Hemisphere
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges		16		39
2016-17 Plan [Member] \| Eastern Hemisphere
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges		14		40
2016-17 Plan [Member] \| Corporate, Non-Segment [Member]
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges		1		27
2016-17 Plan [Member] \| Employee Severance
Restructuring Cost and Reserve [Line Items]
Severance costs		22		56
2016-17 Plan [Member] \| Employee Severance \| Western Hemisphere
Restructuring Cost and Reserve [Line Items]
Severance costs		10		15
2016-17 Plan [Member] \| Employee Severance \| Eastern Hemisphere
Restructuring Cost and Reserve [Line Items]
Severance costs		11		18
2016-17 Plan [Member] \| Employee Severance \| Corporate, Non-Segment [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs		1		23
2016-17 Plan [Member] \| Other Restructuring
Restructuring Cost and Reserve [Line Items]
Other restructuring costs		9		50
2016-17 Plan [Member] \| Other Restructuring \| Western Hemisphere
Restructuring Cost and Reserve [Line Items]
Other restructuring costs		6		24
2016-17 Plan [Member] \| Other Restructuring \| Eastern Hemisphere
Restructuring Cost and Reserve [Line Items]
Other restructuring costs		3		22
2016-17 Plan [Member] \| Other Restructuring \| Corporate, Non-Segment [Member]
Restructuring Cost and Reserve [Line Items]
Other restructuring costs		$ 0		$ 4
Transformation Plan [Member]
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges	38		63
Transformation Plan [Member] \| Western Hemisphere
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges	13		17
Transformation Plan [Member] \| Eastern Hemisphere
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges	18		27
Transformation Plan [Member] \| Corporate, Non-Segment [Member]
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges	7		19
Transformation Plan [Member] \| Employee Severance
Restructuring Cost and Reserve [Line Items]
Severance costs	29		40
Transformation Plan [Member] \| Employee Severance \| Western Hemisphere
Restructuring Cost and Reserve [Line Items]
Severance costs	11		15
Transformation Plan [Member] \| Employee Severance \| Eastern Hemisphere
Restructuring Cost and Reserve [Line Items]
Severance costs	14		18
Transformation Plan [Member] \| Employee Severance \| Corporate, Non-Segment [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs	4		7
Transformation Plan [Member] \| Other Restructuring
Restructuring Cost and Reserve [Line Items]
Other restructuring costs	9		23
Transformation Plan [Member] \| Other Restructuring \| Western Hemisphere
Restructuring Cost and Reserve [Line Items]
Other restructuring costs	2		2
Transformation Plan [Member] \| Other Restructuring \| Eastern Hemisphere
Restructuring Cost and Reserve [Line Items]
Other restructuring costs	4		9
Transformation Plan [Member] \| Other Restructuring \| Corporate, Non-Segment [Member]
Restructuring Cost and Reserve [Line Items]
Other restructuring costs	$ 3		$ 12

Restructuring and Transformation Charges (Restructuring Liability) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2018 USD ($)
Other Restructuring
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	$ 63
Other Restructuring \| Eastern Hemisphere
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	23
Other Restructuring \| Western Hemisphere
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	21
Other Restructuring \| Corporate, Non-Segment [Member]
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	19
Severance and Other Restructuring Liabilities [Member]
Restructuring Reserve [Roll Forward]
Accrued balance at beginning of period	61
Restructuring Charges	63
Cash Payments	(55)
Other	(6)
Accrued balance at end of period	63
Transformation Plan [Member] \| Employee Severance
Restructuring Reserve [Roll Forward]
Accrued balance at beginning of period	0
Restructuring Charges	40
Cash Payments	(19)
Other	(4)
Accrued balance at end of period	17
Transformation Plan [Member] \| Employee Severance \| Eastern Hemisphere
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	2
Transformation Plan [Member] \| Employee Severance \| Western Hemisphere
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	7
Transformation Plan [Member] \| Employee Severance \| Corporate, Non-Segment [Member]
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	8
Transformation Plan [Member] \| Other Restructuring
Restructuring Reserve [Roll Forward]
Accrued balance at beginning of period	0
Restructuring Charges	23
Cash Payments	(15)
Other	(1)
Accrued balance at end of period	7
Transformation Plan [Member] \| Other Restructuring \| Eastern Hemisphere
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	2
Transformation Plan [Member] \| Other Restructuring \| Western Hemisphere
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	0
Transformation Plan [Member] \| Other Restructuring \| Corporate, Non-Segment [Member]
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	5
2016-17 and Prior Plan [Member] \| Employee Severance
Restructuring Reserve [Roll Forward]
Accrued balance at beginning of period	21
Restructuring Charges	0
Cash Payments	(11)
Other	0
Accrued balance at end of period	10
2016-17 and Prior Plan [Member] \| Employee Severance \| Eastern Hemisphere
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	2
2016-17 and Prior Plan [Member] \| Employee Severance \| Western Hemisphere
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	2
2016-17 and Prior Plan [Member] \| Employee Severance \| Corporate, Non-Segment [Member]
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	6
2016-17 and Prior Plan [Member] \| Other Restructuring
Restructuring Reserve [Roll Forward]
Accrued balance at beginning of period	40
Restructuring Charges	0
Cash Payments	(10)
Other	(1)
Accrued balance at end of period	29
2016-17 and Prior Plan [Member] \| Other Restructuring \| Eastern Hemisphere
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	17
2016-17 and Prior Plan [Member] \| Other Restructuring \| Western Hemisphere
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	12
2016-17 and Prior Plan [Member] \| Other Restructuring \| Corporate, Non-Segment [Member]
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	$ 0

Accounts Receivable Factoring and Other Receivables (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2018	Jun. 30, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Proceeds from Sale of Notes Receivable	$ 59.0
Proceeds from sale of accounts receivable			$ 181.0
Gain (loss) on sale of accounts receivable			(1.0)	$ (0.4)
Accounts receivable sold, carrying value	$ 78.0		$ 188.0	$ 78.0
Trade receivables held-for-sale, reconciliation to cash flow, deductions from held-for-sale		$ 65.0
Receivable with imputed interest, face amount		$ 65.0
Receivable with imputed interest, term		3 years
Receivable with imputed interest, effective yield (interest rate)		4.625%
Notes receivable, fair value disclosure		$ 58.0

Inventories, Net (Schedule of Inventory) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Raw materials, components and supplies	$ 147	$ 144
Work in process	53	47
Finished goods	943	1,043
Inventories, Net	$ 1,143	$ 1,234

Asset Impairments and Write-Downs - Narrative (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment of Long-Lived Assets to be Disposed of	$ 92	$ 0
Impairment Charge on Reclassified Assets	10
Western Hemisphere
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment of Long-Lived Assets to be Disposed of	34
Impairment Charge on Reclassified Assets	3
Eastern Hemisphere
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment of Long-Lived Assets to be Disposed of	48
Impairment Charge on Reclassified Assets	7
Land Drilling Rigs
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment of Long-Lived Assets to be Disposed of	$ 82

Goodwill (Schedule of Goodwill) (Details) $ in Millions	6 Months Ended
Goodwill (Schedule of Goodwill) (Details) $ in Millions	Jun. 30, 2018 USD ($)
Goodwill [Line Items]
Goodwill, Acquired During Period	$ 23
Goodwill, Written off Related to Sale of Business Unit	8
Goodwill, Reclassification to Assets Held for Sale	59
Goodwill [Roll Forward]
Balance at December 31, 2017	2,727
Foreign currency translation adjustments	(62)
Balance at June 30, 2018	2,621
Western Hemisphere
Goodwill [Line Items]
Goodwill, Written off Related to Sale of Business Unit	8
Goodwill, Reclassification to Assets Held for Sale	43
Goodwill [Roll Forward]
Balance at December 31, 2017	1,958
Foreign currency translation adjustments	(46)
Eastern Hemisphere
Goodwill [Line Items]
Goodwill, Acquired During Period	23
Goodwill, Written off Related to Sale of Business Unit	0
Goodwill, Reclassification to Assets Held for Sale	16
Goodwill [Roll Forward]
Balance at December 31, 2017	769
Foreign currency translation adjustments	(16)
Balance at June 30, 2018	760
Western Hemisphere
Goodwill [Line Items]
Goodwill, Acquired During Period	0
Goodwill [Roll Forward]
Balance at June 30, 2018	$ 1,861

Short-term Borrowings and Other Debt Obligations (Schedule of Short-term Debt) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Revolving Credit Facility
Short-term Debt [Line Items]
Short-term debt	$ 225	$ 0
Other short-term bank loans
Short-term Debt [Line Items]
Short-term debt	7	11
Current Portion of Long-term Debt	$ 63	$ 137

Short-term Borrowings and Other Debt Obligations (Narrative) (Details)		3 Months Ended			6 Months Ended
	Feb. 28, 2018 USD ($)	Dec. 31, 2018 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Aug. 08, 2018 USD ($)	Mar. 31, 2018	Dec. 31, 2017 USD ($)
Short-term Debt [Line Items]
Credit agreement, maximum capacity			$ 1,250,000,000		$ 1,250,000,000
Remaining borrowing capacity			506,000,000		$ 506,000,000
Line of Credit Facility, Collateral					92
Debt instrument, covenant, senior leverage ratio, period two					2.5
Debt instrument, covenant, specified leverage and letter of credit ratio, period two					3.5
Debt instrument, covenant, asset coverage ratio					4.0
Bond Tender and Call Premium			0	$ 0	$ (34,000,000)	$ 0
Borrowings of Long-term Debt					588,000,000	251,000,000
Performance bonds			9,000,000		9,000,000
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities					455,000,000	$ 36,000,000
Revolving Credit Facility
Short-term Debt [Line Items]
Short-term debt			225,000,000		225,000,000				$ 0
Committed letters of credit
Short-term Debt [Line Items]
Letters of Credit Outstanding, Amount			350,000,000		350,000,000
Domestic and foreign facility
Short-term Debt [Line Items]
Short term borrowings			7,000,000		7,000,000
Committed Letters of Credit [Member]
Short-term Debt [Line Items]
Letters of Credit Outstanding, Amount			169,000,000		169,000,000
A&R Credit Agreement
Short-term Debt [Line Items]
Credit agreement, maximum capacity			900,000,000		900,000,000
Senior Notes, 9.875 Percent due 2025
Short-term Debt [Line Items]
Long-term Debt	$ 600,000,000
Senior Notes, 9.625% due 2019
Short-term Debt [Line Items]
Long-term Debt	425,000,000
Interest Payable	20,000,000
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	$ 475,000,000
Term Loan Borrowings before Debt Issuance Cost [Member]
Short-term Debt [Line Items]
Debt and Capital Lease Obligations			$ 350,000,000		$ 350,000,000
Senior Notes \| Senior Notes, 9.875 Percent due 2025
Short-term Debt [Line Items]
Stated interest rate on debt	9.875%
Senior Notes \| Senior Notes, 9.625% due 2019
Short-term Debt [Line Items]
Stated interest rate on debt	9.625%
Senior Notes \| Senior Notes, 6.00% due 2018
Short-term Debt [Line Items]
Stated interest rate on debt								6.00%
Subsequent Event [Member] \| Amended Credit Agreement [Member]
Short-term Debt [Line Items]
Credit agreement, maximum capacity							$ 900,000,000
Line of Credit Facility Reduction in Borrowing Capacity		$ 54,000,000
London Interbank Offered Rate (LIBOR) \| Term Loan Agreement
Short-term Debt [Line Items]
Basis spread on variable rate (as a percent)			1.425%
London Interbank Offered Rate (LIBOR) \| Extending Lenders \| Minimum \| A&R Credit Agreement
Short-term Debt [Line Items]
Basis spread on variable rate (as a percent)			1.925%

Short-term Borrowings and Other Debt Obligations Schedule of Borrowing Availability (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Line of Credit Facility [Line Items]
Credit agreement, maximum capacity	$ 1,250
Revolving Credit Facility
Line of Credit Facility [Line Items]
Short-term debt	225	$ 0
Committed Letters of Credit [Member]
Line of Credit Facility [Line Items]
Letters of Credit Outstanding, Amount	169
Term Loan Borrowings before Debt Issuance Cost [Member]
Line of Credit Facility [Line Items]
Debt and Capital Lease Obligations	$ 350

Fair Value of Financial Instruments (Details) - Senior Notes - Level 2 - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long-term debt	$ 6,951	$ 7,060
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long-term debt	$ 7,267	$ 7,218

Derivative Instruments (Narrative) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Derivative [Line Items]
Number of securities called by each warrant or right			84.5
Exercise price of warrants or rights			$ 6.43
Warrants and rights outstanding	$ 14			$ 14		$ 70
Fair Value Adjustment of Warrants	(10)	$ (127)		(56)	$ (65)
Foreign currency forward contracts
Derivative [Line Items]
Notional amount	463			463		767
Fair Value Hedging [Member] \| Interest Rate Swap [Member]
Derivative [Line Items]
Debt Instrument, Unamortized Premium	0			0		$ 4
Cash Flow Hedging [Member] \| Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Deferred (gain) loss on discontinuation of fair value hedge	8			8
Other, Net \| Not Designated as Hedging Instrument \| Foreign currency forward contracts
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ (1)	$ (15)		$ 0	$ (22)
Capital in Excess of Par Value
Derivative [Line Items]
Stock issued during period, shares, new issues			84.5

Derivative Instruments (Schedule of Derivatives - Balance Sheet) (Details) - Not Designated as Hedging Instrument - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Foreign currency forward contracts \| Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative asset, fair value, gross	$ 3	$ 5
Foreign currency forward contracts \| Other Current Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability, fair value, gross	(3)	(4)
Warrant \| Other Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability, fair value, gross	$ (14)	$ (70)

Derivative Instruments (Schedule of Derivatives - Income Statement) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Warrant Fair Value Adjustment	$ (10)	$ (127)	$ (56)	$ (65)
Foreign currency forward contracts \| Other, Net \| Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative	$ (1)	$ (15)	$ 0	$ (22)

Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
Income Taxes (Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2019
(Provision) Benefit for Income Taxes	$ (26)	$ (17)	$ (58)	$ (50)
Loss Before Income Taxes	$ (233)	$ (148)	$ (443)	$ (558)
Forecast
Uncertain tax positions, estimated for next twelve months					$ 12

Shareholders' Equity (Shareholders' Equity Activity) (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Schedule of Issued and Treasury Shares [Line Items]
Capital in Excess of Par Value	$ 6,688			$ 6,688		$ 6,655
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning balance				(571)	$ 2,068
Net Income (Loss)	(259)	$ (165)		(501)	(608)
Other Comprehensive Income	(165)	(10)		(160)	33
Dividends Paid to Noncontrolling Interests				(6)	(10)
Equity Awards Granted, Vested and Exercised				29	41
Balance, ending balance	(1,312)	1,524	$ 2,068	(1,312)	1,524
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	(97)			(97)
Stockholders' Equity, Other				(6)
Par Value of Issued Shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning balance				1	1
Equity Awards Granted, Vested and Exercised				0	0
Balance, ending balance	1	1	1	1	1
Capital in Excess of Par Value
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning balance				6,655	6,571
Equity Awards Granted, Vested and Exercised				29	41
Balance, ending balance	6,688	6,612	$ 6,571	6,688	6,612
Stock issued during period, shares, new issues			84.5
Stockholders' Equity, Other				4
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning balance				(5,763)	(2,950)
Net Income (Loss)				(509)	(619)
Equity Awards Granted, Vested and Exercised				0	0
Balance, ending balance	(6,369)	(3,569)	$ (2,950)	(6,369)	(3,569)
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	(97)			(97)
Stockholders' Equity, Other				0
Accumulated Other Comprehensive Income (Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning balance				(1,519)	(1,610)
Other Comprehensive Income				(160)	33
Equity Awards Granted, Vested and Exercised				0	0
Balance, ending balance	(1,679)	(1,577)	(1,610)	(1,679)	(1,577)
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning balance				55	56
Net Income (Loss)				8	11
Dividends Paid to Noncontrolling Interests				(6)	(10)
Equity Awards Granted, Vested and Exercised				0	0
Balance, ending balance	$ 47	$ 57	$ 56	47	$ 57
Stockholders' Equity, Other				$ (10)

Shareholders' Equity (Changes in Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance			$ (1,519)	$ (1,610)
Other Comprehensive Income before Reclassifications			(161)	74
Reclassifications			1	(41)
Other Comprehensive Income (Loss)	$ (165)	$ (10)	(160)	33
Ending balance	(1,679)	(1,577)	(1,679)	(1,577)
Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance			(1,484)	(1,614)
Other Comprehensive Income before Reclassifications			(161)	74
Reclassifications			0	0
Other Comprehensive Income (Loss)			(161)	74
Ending balance	(1,645)	(1,540)	(1,645)	(1,540)
Defined Benefit Pension
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance			(26)	13
Other Comprehensive Income before Reclassifications			0	0
Reclassifications			1	(41)
Other Comprehensive Income (Loss)			1	(41)
Ending balance	(25)	(28)	(25)	(28)
Deferred Loss on Derivatives
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance			(9)	(9)
Other Comprehensive Income before Reclassifications			0	0
Reclassifications			0	0
Other Comprehensive Income (Loss)			0	0
Ending balance	$ (9)	$ (9)	$ (9)	$ (9)

Share-Based Compensation (Schedule of Share-based Compensation Expense) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-based compensation	$ 14	$ 17	$ 27	$ 41
Related tax benefit	$ 0	$ 0	$ 0	$ 0

Share-Based Compensation (Narrative) (Details) $ / shares in Units, shares in Millions, $ in Millions	6 Months Ended
	Jun. 30, 2018 USD ($) $ / shares shares
Performance units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) \| shares	1.5
Weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 3.86
Fair value, risk-free rate	2.28%
Fair value, volatility rate	63.00%
Fair value, dividend yield	0.00%
Unrecognized compensation expense \| $	$ 14
Unrecognized compensation expense, recognition period	2 years
Performance units \| Monte Carlo simulation method
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) \| shares	1.5
Weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 5.30
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) \| shares	3.7
Weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 3.71
Unrecognized compensation expense \| $	$ 46
Unrecognized compensation expense, recognition period	2 years

Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
Segment Information (Details) - USD ($) $ in Millions	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Revenues	$ (1,448)	$ (1,363)	$ (2,871)	$ (2,749)
Operating Income (Loss)	(73)	(145)	(112)	(359)
Depreciation and Amortization	144	204	291	412
Corporate General and Administrative	(37)	(36)	(75)	(75)
Restructuring Charges	(38)	(31)	(63)	(106)
Overstatement (reduction) of revenues	(1,448)	(1,363)	(2,871)	(2,749)
Operating Segments
Segment Reporting Information [Line Items]
Revenues	(1,448)	(1,363)	(2,871)	(2,749)
Operating Income (Loss)	69	(73)	109	(162)
Depreciation and Amortization	140	203	286	409
Overstatement (reduction) of revenues	(1,448)	(1,363)	(2,871)	(2,749)
Operating Segments \| Western Hemisphere
Segment Reporting Information [Line Items]
Revenues	(769)	(678)	(1,525)	(1,411)
Operating Income (Loss)	50	(51)	74	(81)
Depreciation and Amortization	56	92	116	183
Overstatement (reduction) of revenues	(769)	(678)	(1,525)	(1,411)
Operating Segments \| Eastern Hemisphere
Segment Reporting Information [Line Items]
Revenues	(679)	(685)	(1,346)	(1,338)
Operating Income (Loss)	19	(22)	35	(81)
Depreciation and Amortization	84	111	170	226
Overstatement (reduction) of revenues	(679)	(685)	(1,346)	(1,338)
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Depreciation and Amortization	4	1	5	3
Corporate General and Administrative	(34)	(33)	(70)	(66)
Segment Reconciling Items
Segment Reporting Information [Line Items]
Restructuring Charges	(38)	(31)	(63)	106
Impairment of Long-Lived Assets and Other Related Charges	$ (70)	$ (8)	$ (88)	$ (25)

Segment Information (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Severance, asset impairment and other restructuring charges	$ 38	$ 31	$ 63	$ 106
2016-17 Plan [Member]
Segment Reporting Information [Line Items]
Severance, asset impairment and other restructuring charges		31		106
2016-17 Plan [Member] \| Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Severance, asset impairment and other restructuring charges		$ 1		$ 27

Disputes, Litigation and Contingencies (Details) $ in Millions			12 Months Ended
	Sep. 27, 2016	Jul. 31, 2015 patent	Dec. 31, 2010 lawsuit	Jun. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)	Jun. 30, 2016 USD ($)
Loss Contingencies [Line Items]
Loss Contingency, Patents Allegedly Infringed, Number \| patent		7
Estimated litigation liability				$ 33	$ 51
Recorded unconditional purchase obligation				47
Other Current Liabilities
Loss Contingencies [Line Items]
Recorded unconditional purchase obligation				22
Other Noncurrent Liabilities
Loss Contingencies [Line Items]
Recorded unconditional purchase obligation				$ 25
Neff v. Brady, et al.
Loss Contingencies [Line Items]
Number of actions filed (in lawsuits) \| lawsuit			3
U.S. SEC and DOJ Investigation
Loss Contingencies [Line Items]
Loss contingency accrual						$ 140
Period of time in which reports and certifications are delivered regarding tax internal controls	2 years

Condensed Consolidating Financial Statements (Narrative) (Details) - Senior Notes	Jun. 30, 2018	Mar. 31, 2018	Feb. 28, 2018	Dec. 31, 2017
Senior Notes, 6.80% due 2037 \| Weatherford Bermuda
Condensed Financial Statements, Captions [Line Items]
Stated interest rate on debt	6.80%			6.80%
Senior Notes, 6.50% due 2036 \| Weatherford Delaware
Condensed Financial Statements, Captions [Line Items]
Stated interest rate on debt	6.50%			6.50%
Senior Notes, 6.00% due 2018
Condensed Financial Statements, Captions [Line Items]
Stated interest rate on debt		6.00%
Senior Notes, 6.00% due 2018 \| Weatherford Delaware
Condensed Financial Statements, Captions [Line Items]
Stated interest rate on debt				6.00%
Senior Notes, 7.00% due 2038 \| Weatherford Delaware
Condensed Financial Statements, Captions [Line Items]
Stated interest rate on debt	7.00%			7.00%
Senior Notes, 9.625% due 2019
Condensed Financial Statements, Captions [Line Items]
Stated interest rate on debt			9.625%
Senior Notes, 9.625% due 2019 \| Weatherford Delaware
Condensed Financial Statements, Captions [Line Items]
Stated interest rate on debt	9.625%			9.625%
Senior Notes, 9.875% due 2039 \| Weatherford Delaware
Condensed Financial Statements, Captions [Line Items]
Stated interest rate on debt	9.875%			9.875%
Senior Notes, 5.125% due 2020 \| Weatherford Delaware
Condensed Financial Statements, Captions [Line Items]
Stated interest rate on debt	5.125%			5.125%
Senior Notes, 6.75% due 2040 \| Weatherford Delaware
Condensed Financial Statements, Captions [Line Items]
Stated interest rate on debt	6.75%			6.75%
Senior Notes, 4.50% due 2022 \| Weatherford Delaware
Condensed Financial Statements, Captions [Line Items]
Stated interest rate on debt	4.50%			4.50%
Senior Notes, 5.95% due 2042 \| Weatherford Delaware
Condensed Financial Statements, Captions [Line Items]
Stated interest rate on debt	5.95%			5.95%
Exchangeable Senior Notes, 5.875 Percent due 2021 \| Weatherford Delaware
Condensed Financial Statements, Captions [Line Items]
Stated interest rate on debt	5.875%			5.875%
Senior Notes, 7.75 Percent due 2021 \| Weatherford Delaware
Condensed Financial Statements, Captions [Line Items]
Stated interest rate on debt	7.75%			7.75%
Senior Notes, 8.25 Percent due 2023 \| Weatherford Delaware
Condensed Financial Statements, Captions [Line Items]
Stated interest rate on debt	8.25%			8.25%
Senior Notes, 9.875 Percent due 2024 \| Weatherford Delaware
Condensed Financial Statements, Captions [Line Items]
Stated interest rate on debt	9.875%			9.875%
Senior Notes, 9.875 Percent due 2025
Condensed Financial Statements, Captions [Line Items]
Stated interest rate on debt			9.875%
Senior Notes, 9.875 Percent due 2025 \| Weatherford Delaware
Condensed Financial Statements, Captions [Line Items]
Stated interest rate on debt	9.875%

Condensed Consolidating Financial Statements (Condensed Consolidating Statement of Operations) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Condensed Income Statements, Captions [Line Items]
Revenues	$ 1,448	$ 1,363	$ 2,871	$ 2,749
Costs and Expenses	(1,521)	(1,508)	(2,983)	(3,108)
Operating Income (Loss)	(73)	(145)	(112)	(359)
Other Income (Expense):
Interest Expense, Net	(152)	(138)	(301)	(279)
Intercompany Charges, Net	0	0	0	0
Income (Loss) from Subsidiary	0	0	0	0
Other Nonoperating Income (Expense), Including Foreign Currency Devaluation	(8)	135	(30)	80
Loss Before Income Taxes	(233)	(148)	(443)	(558)
(Provision) Benefit for Income Taxes	(26)	(17)	(58)	(50)
Net Loss	(259)	(165)	(501)	(608)
Noncontrolling Interests	5	6	8	11
Net Income (Loss) Attributable to Weatherford	(264)	(171)	(509)	(619)
Comprehensive Income (Loss) Attributable to Weatherford	(429)	(181)	(669)	(586)
Other Subsidiaries
Condensed Income Statements, Captions [Line Items]
Revenues	1,448	1,363	2,871	2,749
Costs and Expenses	(1,516)	(1,523)	(2,980)	(3,140)
Operating Income (Loss)	(68)	(160)	(109)	(391)
Other Income (Expense):
Interest Expense, Net	5	11	9	15
Intercompany Charges, Net	(81)	120	(675)	129
Income (Loss) from Subsidiary	0	0	0	0
Other Nonoperating Income (Expense), Including Foreign Currency Devaluation	(28)	(237)	(185)	(14)
Loss Before Income Taxes	(172)	(266)	(960)	(261)
(Provision) Benefit for Income Taxes	(26)	(17)	(58)	50
Net Loss	(198)	(283)	(1,018)	(311)
Noncontrolling Interests	5	6	8	11
Net Income (Loss) Attributable to Weatherford	(203)	(289)	(1,026)	(322)
Comprehensive Income (Loss) Attributable to Weatherford	(369)	(298)	(1,187)	(288)
Weatherford Ireland
Condensed Income Statements, Captions [Line Items]
Revenues	0	0	0	0
Costs and Expenses	(5)	(5)	(3)	(8)
Operating Income (Loss)	(5)	(5)	(3)	(8)
Other Income (Expense):
Interest Expense, Net	0	0	0	0
Intercompany Charges, Net	3	3	(15)	(4)
Income (Loss) from Subsidiary	(272)	(296)	(547)	(680)
Other Nonoperating Income (Expense), Including Foreign Currency Devaluation	10	127	56	65
Loss Before Income Taxes	(264)	(171)	(509)	(619)
(Provision) Benefit for Income Taxes	0	0	0	0
Net Loss	(264)	(171)	(509)	(619)
Noncontrolling Interests	0	0	0	0
Net Income (Loss) Attributable to Weatherford	(264)	(171)	(509)	(619)
Comprehensive Income (Loss) Attributable to Weatherford	(429)	(181)	(669)	(586)
Weatherford Bermuda
Condensed Income Statements, Captions [Line Items]
Revenues	0	0	0	0
Costs and Expenses	0	19	0	39
Operating Income (Loss)	0	19	0	39
Other Income (Expense):
Interest Expense, Net	(137)	(144)	(281)	(283)
Intercompany Charges, Net	5	(82)	2	90
Income (Loss) from Subsidiary	28	(304)	(322)	(132)
Other Nonoperating Income (Expense), Including Foreign Currency Devaluation	10	247	100	31
Loss Before Income Taxes	(94)	(264)	(501)	(435)
(Provision) Benefit for Income Taxes	0	0	0	0
Net Loss	(94)	(264)	(501)	(435)
Noncontrolling Interests	0	0	0	0
Net Income (Loss) Attributable to Weatherford	(94)	(264)	(501)	(435)
Comprehensive Income (Loss) Attributable to Weatherford	(126)	(290)	(527)	(466)
Weatherford Delaware
Condensed Income Statements, Captions [Line Items]
Revenues	0	0	0	0
Costs and Expenses	0	1	0	1
Operating Income (Loss)	0	1	0	1
Other Income (Expense):
Interest Expense, Net	(25)	1	(39)	(20)
Intercompany Charges, Net	(40)	(41)	(29)	43
Income (Loss) from Subsidiary	(23)	(39)	(156)	180
Other Nonoperating Income (Expense), Including Foreign Currency Devaluation	11	191	133	52
Loss Before Income Taxes	(77)	113	(91)	170
(Provision) Benefit for Income Taxes	0	0	0	0
Net Loss	(77)	113	(91)	170
Noncontrolling Interests	0	0	0	0
Net Income (Loss) Attributable to Weatherford	(77)	113	(91)	170
Comprehensive Income (Loss) Attributable to Weatherford	(55)	128	(57)	102
Eliminations
Condensed Income Statements, Captions [Line Items]
Revenues	0	0	0	0
Costs and Expenses	0	0	0	0
Operating Income (Loss)	0	0	0	0
Other Income (Expense):
Interest Expense, Net	5	(6)	10	9
Intercompany Charges, Net	(113)	0	(717)	0
Income (Loss) from Subsidiary	267	639	1,025	632
Other Nonoperating Income (Expense), Including Foreign Currency Devaluation	(11)	(193)	(134)	(54)
Loss Before Income Taxes	374	440	1,618	587
(Provision) Benefit for Income Taxes	0	0	0	0
Net Loss	374	440	1,618	587
Noncontrolling Interests	0	0	0	0
Net Income (Loss) Attributable to Weatherford	374	440	1,618	587
Comprehensive Income (Loss) Attributable to Weatherford	$ 550	$ 460	$ 1,771	$ 652

Condensed Consolidating Financial Statements (Condensed Consolidating Balance Sheet) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016
Current Assets
Cash and Cash Equivalents	$ 415	$ 613	$ 584	$ 1,037
Other Current Assets	3,278	3,265
Total Current Assets	3,693	3,878
Equity Investments in Affiliates	0	0
Intercompany Receivables, Net	0	0
Other Assets	5,286	5,869
Total Assets	8,979	9,747
Current Liabilities
Short-term Borrowings and Current Portion of Long-Term Debt	295	148
Accounts Payable and Other Current Liabilities	1,905	2,082
Total Current Liabilities	2,200	2,230
Long-term Debt	7,634	7,541
Intercompany Payables, Net	0	0
Other Long-term Liabilities	457	547
Total Liabilities	10,291	10,318
Weatherford Shareholders’ Equity	(1,359)	(626)
Noncontrolling Interests	47	55
Total Liabilities and Shareholders’ Deficiency	8,979	9,747
Other Subsidiaries
Current Assets
Cash and Cash Equivalents	350	418	429	447
Other Current Assets	3,315	3,298
Total Current Assets	3,665	3,716
Equity Investments in Affiliates	776	530
Intercompany Receivables, Net	3,008	4,213
Other Assets	5,276	5,857
Total Assets	12,725	14,316
Current Liabilities
Short-term Borrowings and Current Portion of Long-Term Debt	19	20
Accounts Payable and Other Current Liabilities	2,251	2,439
Total Current Liabilities	2,270	2,459
Long-term Debt	148	159
Intercompany Payables, Net	0	0
Other Long-term Liabilities	446	332
Total Liabilities	2,864	2,950
Weatherford Shareholders’ Equity	9,814	11,311
Noncontrolling Interests	47	55
Total Liabilities and Shareholders’ Deficiency	12,725	14,316
Weatherford Ireland
Current Assets
Cash and Cash Equivalents	0	0	1	0
Other Current Assets	1	1
Total Current Assets	1	1
Equity Investments in Affiliates	(1,343)	(460)
Intercompany Receivables, Net	2	0
Other Assets	0	0
Total Assets	(1,340)	(459)
Current Liabilities
Short-term Borrowings and Current Portion of Long-Term Debt	0	0
Accounts Payable and Other Current Liabilities	19	10
Total Current Liabilities	19	10
Long-term Debt	0	0
Intercompany Payables, Net	0	87
Other Long-term Liabilities	0	70
Total Liabilities	19	167
Weatherford Shareholders’ Equity	(1,359)	(626)
Noncontrolling Interests	0	0
Total Liabilities and Shareholders’ Deficiency	(1,340)	(459)
Weatherford Bermuda
Current Assets
Cash and Cash Equivalents	65	195	154	586
Other Current Assets	0	0
Total Current Assets	65	195
Equity Investments in Affiliates	7,675	7,998
Intercompany Receivables, Net	0	0
Other Assets	6	8
Total Assets	7,746	8,201
Current Liabilities
Short-term Borrowings and Current Portion of Long-Term Debt	276	128
Accounts Payable and Other Current Liabilities	168	183
Total Current Liabilities	444	311
Long-term Debt	6,644	7,127
Intercompany Payables, Net	183	242
Other Long-term Liabilities	11	146
Total Liabilities	7,282	7,826
Weatherford Shareholders’ Equity	464	375
Noncontrolling Interests	0	0
Total Liabilities and Shareholders’ Deficiency	7,746	8,201
Weatherford Delaware
Current Assets
Cash and Cash Equivalents	0	0	0	4
Other Current Assets	496	516
Total Current Assets	496	516
Equity Investments in Affiliates	7,701	8,009
Intercompany Receivables, Net	0	0
Other Assets	4	4
Total Assets	8,201	8,529
Current Liabilities
Short-term Borrowings and Current Portion of Long-Term Debt	0	0
Accounts Payable and Other Current Liabilities	0	0
Total Current Liabilities	0	0
Long-term Debt	763	166
Intercompany Payables, Net	2,827	3,884
Other Long-term Liabilities	3	136
Total Liabilities	3,593	4,186
Weatherford Shareholders’ Equity	4,608	4,343
Noncontrolling Interests	0	0
Total Liabilities and Shareholders’ Deficiency	8,201	8,529
Eliminations
Current Assets
Cash and Cash Equivalents	0	0	$ 0	$ 0
Other Current Assets	(534)	(550)
Total Current Assets	(534)	(550)
Equity Investments in Affiliates	(14,809)	(16,077)
Intercompany Receivables, Net	(3,010)	(4,213)
Other Assets	0	0
Total Assets	(18,353)	(20,840)
Current Liabilities
Short-term Borrowings and Current Portion of Long-Term Debt	0	0
Accounts Payable and Other Current Liabilities	(533)	(550)
Total Current Liabilities	(533)	(550)
Long-term Debt	79	89
Intercompany Payables, Net	(3,010)	(4,213)
Other Long-term Liabilities	(3)	(137)
Total Liabilities	(3,467)	(4,811)
Weatherford Shareholders’ Equity	(14,886)	(16,029)
Noncontrolling Interests	0	0
Total Liabilities and Shareholders’ Deficiency	$ (18,353)	$ (20,840)

Condensed Consolidating Financial Statements (Condensed Consolidating Statement of Cash Flows) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Condensed Cash Flow Statements, Captions [Line Items]
Net Income (Loss)	$ (259,000,000)	$ (165,000,000)	$ (501,000,000)	$ (608,000,000)
Cash Flows from Operating Activities:
Charges from Parent or Subsidiary			0	0
Equity in (Earnings) Loss of Affiliates			0	0
Deferred Income Tax Provision (Benefit)			(5,000,000)	4,000,000
Other Adjustments			191,000,000	363,000,000
Net Cash Used in Operating Activities			(315,000,000)	(241,000,000)
Cash Flows From Investing Activities:
Capital Expenditures for Property, Plant and Equipment			(68,000,000)	(82,000,000)
Payments to Acquire Businesses, Net of Cash Acquired			4,000,000	0
Capital Expenditures for and Acquisition of Assets Held for Sale			(18,000,000)	(243,000,000)
Acquisition of Intellectual Property			(7,000,000)	(9,000,000)
Proceeds from Sale of Assets			50,000,000	25,000,000
Proceeds (Payments) from Sale of Businesses and Equity Investment, Net			25,000,000	(1,000,000)
Payments for (Proceeds from) Other Investing Activities			0	(5,000,000)
Net Cash Used in Investing Activities			(14,000,000)	(315,000,000)
Cash Flows From Financing Activities:
Borrowings (Repayments) of Short-term Debt, Net			87,000,000	(96,000,000)
Borrowings (Repayments) Long-term Debt, Net			133,000,000	215,000,000
Borrowings (Repayments) Between Subsidiaries, Net			0	0
Other, Net			(48,000,000)	(20,000,000)
Net Cash Provided by Financing Activities			172,000,000	99,000,000
Effect of Exchange Rate Changes on Cash and Cash Equivalents			(41,000,000)	4,000,000
Net Decrease in Cash and Cash Equivalents			(198,000,000)	(453,000,000)
Cash and Cash Equivalents at Beginning of Period			613,000,000	1,037,000,000
Cash and Cash Equivalents at End of Period	415,000,000	584,000,000	415,000,000	584,000,000
Other Subsidiaries
Condensed Cash Flow Statements, Captions [Line Items]
Proceeds from Sale of Productive Assets			50,000,000
Net Income (Loss)	(198,000,000)	(283,000,000)	(1,018,000,000)	(311,000,000)
Cash Flows from Operating Activities:
Charges from Parent or Subsidiary			675,000,000	(129,000,000)
Equity in (Earnings) Loss of Affiliates			0	0
Deferred Income Tax Provision (Benefit)			(5,000,000)	4,000,000
Other Adjustments			(402,000,000)	452,000,000
Net Cash Used in Operating Activities			(750,000,000)	16,000,000
Cash Flows From Investing Activities:
Capital Expenditures for Property, Plant and Equipment			(68,000,000)	(82,000,000)
Payments to Acquire Businesses, Net of Cash Acquired			4,000,000
Capital Expenditures for and Acquisition of Assets Held for Sale			(18,000,000)	(243,000,000)
Acquisition of Intellectual Property			(7,000,000)	(9,000,000)
Proceeds from Sale of Assets				25,000,000
Proceeds (Payments) from Sale of Businesses and Equity Investment, Net			25,000,000	(1,000,000)
Payments for (Proceeds from) Other Investing Activities				(5,000,000)
Net Cash Used in Investing Activities			(14,000,000)	(315,000,000)
Cash Flows From Financing Activities:
Borrowings (Repayments) of Short-term Debt, Net			(3,000,000)	(96,000,000)
Borrowings (Repayments) Long-term Debt, Net			(4,000,000)	78,000,000
Borrowings (Repayments) Between Subsidiaries, Net			792,000,000	315,000,000
Other, Net			(48,000,000)	(20,000,000)
Net Cash Provided by Financing Activities			737,000,000	277,000,000
Effect of Exchange Rate Changes on Cash and Cash Equivalents			(41,000,000)	4,000,000
Net Decrease in Cash and Cash Equivalents			(68,000,000)	(18,000,000)
Cash and Cash Equivalents at Beginning of Period			418,000,000	447,000,000
Cash and Cash Equivalents at End of Period	350,000,000	429,000,000	350,000,000	429,000,000
Weatherford Ireland
Condensed Cash Flow Statements, Captions [Line Items]
Proceeds from Sale of Productive Assets			0
Net Income (Loss)	(264,000,000)	(171,000,000)	(509,000,000)	(619,000,000)
Cash Flows from Operating Activities:
Charges from Parent or Subsidiary			15,000,000	(4,000,000)
Equity in (Earnings) Loss of Affiliates			547,000,000	680,000,000
Deferred Income Tax Provision (Benefit)			0	0
Other Adjustments			70,000,000	(134,000,000)
Net Cash Used in Operating Activities			123,000,000	(77,000,000)
Cash Flows From Investing Activities:
Capital Expenditures for Property, Plant and Equipment				0
Acquisition of Intellectual Property				0
Proceeds from Sale of Assets				0
Proceeds (Payments) from Sale of Businesses and Equity Investment, Net			0	0
Payments for (Proceeds from) Other Investing Activities				0
Cash Flows From Financing Activities:
Borrowings (Repayments) of Short-term Debt, Net			0	0
Borrowings (Repayments) Long-term Debt, Net			0	0
Borrowings (Repayments) Between Subsidiaries, Net			(123,000,000)	78,000,000
Other, Net			0	0
Net Cash Provided by Financing Activities			(123,000,000)	78,000,000
Effect of Exchange Rate Changes on Cash and Cash Equivalents			0	0
Net Decrease in Cash and Cash Equivalents			0	1,000,000
Cash and Cash Equivalents at Beginning of Period			0	0
Cash and Cash Equivalents at End of Period	0	1,000,000	0	1,000,000
Weatherford Bermuda
Condensed Cash Flow Statements, Captions [Line Items]
Proceeds from Sale of Productive Assets			0
Net Income (Loss)	(94,000,000)	(264,000,000)	(501,000,000)	(435,000,000)
Cash Flows from Operating Activities:
Charges from Parent or Subsidiary			(2,000,000)	90,000,000
Equity in (Earnings) Loss of Affiliates			322,000,000	132,000,000
Deferred Income Tax Provision (Benefit)			0	0
Other Adjustments			565,000,000	7,000,000
Net Cash Used in Operating Activities			384,000,000	(206,000,000)
Cash Flows From Investing Activities:
Capital Expenditures for Property, Plant and Equipment				0
Acquisition of Intellectual Property				0
Proceeds from Sale of Assets				0
Proceeds (Payments) from Sale of Businesses and Equity Investment, Net			0	0
Payments for (Proceeds from) Other Investing Activities				0
Cash Flows From Financing Activities:
Borrowings (Repayments) of Short-term Debt, Net			90,000,000	0
Borrowings (Repayments) Long-term Debt, Net			(450,000,000)	226,000,000
Borrowings (Repayments) Between Subsidiaries, Net			(154,000,000)	(452,000,000)
Other, Net			0	0
Net Cash Provided by Financing Activities			(514,000,000)	(226,000,000)
Effect of Exchange Rate Changes on Cash and Cash Equivalents			0	0
Net Decrease in Cash and Cash Equivalents			(130,000,000)	(432,000,000)
Cash and Cash Equivalents at Beginning of Period			195,000,000	586,000,000
Cash and Cash Equivalents at End of Period	65,000,000	154,000,000	65,000,000	154,000,000
Weatherford Delaware
Condensed Cash Flow Statements, Captions [Line Items]
Proceeds from Sale of Productive Assets			0
Net Income (Loss)	(77,000,000)	113,000,000	(91,000,000)	170,000,000
Cash Flows from Operating Activities:
Charges from Parent or Subsidiary			29,000,000	43,000,000
Equity in (Earnings) Loss of Affiliates			156,000,000	(180,000,000)
Deferred Income Tax Provision (Benefit)			0	0
Other Adjustments			(166,000,000)	(7,000,000)
Net Cash Used in Operating Activities			(72,000,000)	26,000,000
Cash Flows From Investing Activities:
Capital Expenditures for Property, Plant and Equipment				0
Acquisition of Intellectual Property				0
Proceeds from Sale of Assets				0
Proceeds (Payments) from Sale of Businesses and Equity Investment, Net			0	0
Payments for (Proceeds from) Other Investing Activities				0
Cash Flows From Financing Activities:
Borrowings (Repayments) of Short-term Debt, Net			0	0
Borrowings (Repayments) Long-term Debt, Net			587,000,000	(89,000,000)
Borrowings (Repayments) Between Subsidiaries, Net			(515,000,000)	59,000,000
Other, Net			0	0
Net Cash Provided by Financing Activities			72,000,000	(30,000,000)
Effect of Exchange Rate Changes on Cash and Cash Equivalents			0	0
Net Decrease in Cash and Cash Equivalents			0	(4,000,000)
Cash and Cash Equivalents at Beginning of Period			0	4,000,000
Cash and Cash Equivalents at End of Period	0	0	0	0
Eliminations
Condensed Cash Flow Statements, Captions [Line Items]
Proceeds from Sale of Productive Assets			0
Net Income (Loss)	374,000,000	440,000,000	1,618,000,000	587,000,000
Cash Flows from Operating Activities:
Charges from Parent or Subsidiary			(717,000,000)	0
Equity in (Earnings) Loss of Affiliates			(1,025,000,000)	(632,000,000)
Deferred Income Tax Provision (Benefit)				0
Other Adjustments			124,000,000	45,000,000
Net Cash Used in Operating Activities			0	0
Cash Flows From Investing Activities:
Capital Expenditures for Property, Plant and Equipment			0	0
Payments to Acquire Businesses, Net of Cash Acquired			0
Capital Expenditures for and Acquisition of Assets Held for Sale			0
Acquisition of Intellectual Property			0	0
Proceeds from Sale of Assets				0
Proceeds (Payments) from Sale of Businesses and Equity Investment, Net			0	0
Payments for (Proceeds from) Other Investing Activities				0
Cash Flows From Financing Activities:
Borrowings (Repayments) of Short-term Debt, Net			0	0
Borrowings (Repayments) Long-term Debt, Net			0	0
Borrowings (Repayments) Between Subsidiaries, Net			0	0
Other, Net			0	0
Net Cash Provided by Financing Activities			0	0
Effect of Exchange Rate Changes on Cash and Cash Equivalents			0	0
Net Decrease in Cash and Cash Equivalents			0	0
Cash and Cash Equivalents at Beginning of Period			0	0
Cash and Cash Equivalents at End of Period	$ 0	$ 0	$ 0	$ 0

Subsequent Events (Details) $ in Millions	Jul. 11, 2018 USD ($) rig	Jun. 30, 2018 USD ($)
Subsequent Event [Line Items]
Credit agreement, maximum capacity		$ 1,250.0
Discontinued Operations, Disposed of by Sale \| Land Drilling Rigs \| Subsequent Event
Subsequent Event [Line Items]
Aggregate purchase price	$ 287.5
Escrow deposit	$ 43.0
Drilling rigs \| rig	31

Revenues - Expected to be Recognized in Future (Details) $ in Millions	Jun. 30, 2018 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total	$ 47
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total	55
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total	17
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total	0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total	0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: (nil)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total	119
Service revenue \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total	37
Service revenue \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total	54
Service revenue \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total	17
Service revenue \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total	0
Service revenue \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total	0
Service revenue \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: (nil)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total	108
Product revenue \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total	10
Product revenue \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total	1
Product revenue \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total	0
Product revenue \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total	0
Product revenue \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total	0
Product revenue \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: (nil)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total	$ 11

General - Devaluation (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
General - Devaluation (Details) - USD ($) $ in Millions	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Foreign exchange related charges	$ 11	$ 0	$ 37	$ 0
Angola, Kwanza
Foreign exchange related charges	$ 11		$ 35

(Dollars in millions)

June 30, 2018

January 1, 2018

Receivables for Product and Services in Accounts Receivable, Net