Weatherford International (WFRD) 10-Q 2 Nov 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Oct. 22, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	Weatherford International plc
Entity Central Index Key	1,603,923
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		1,000,922,469
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2018
Entity Small Business	false
Entity Emerging Growth Company	false

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues:
Total Revenues	$ 1,444	$ 1,460	$ 4,315	$ 4,209
Costs and Expenses:
Cost, Direct Material	499	480	1,378	1,439
Cost of Services, Oil and Gas	606	715	2,015	2,151
Research and Development	31	42	106	117
Selling, General and Administrative Attributable to Segments	192	230	591	671
Corporate General and Administrative	31	28	101	94
Long-Lived Asset Impairments, Asset Write-Downs and Other	71	1	159	26
Restructuring and Transformation Charges	27	34	90	140
Total Costs and Expenses	1,457	1,530	4,440	4,638
Operating Income (Loss)	(13)	(70)	(125)	(429)
Other Income (Expense):
Interest Expense, Net	(156)	(148)	(457)	(427)
Warrant Fair Value Adjustment	11	(7)	67	58
Bond Tender and Call Premium	0	0	(34)	0
Currency Devaluation Charges	(8)	0	(45)	0
Other Income (Expense), Net	(6)	(1)	(21)	14
Loss Before Income Taxes	(172)	(226)	(615)	(784)
Income Tax Provision	(22)	(25)	(80)	(75)
Net Loss	(194)	(251)	(695)	(859)
Net Income Attributable to Noncontrolling Interests	5	5	13	16
Net Income (Loss) Attributable to Weatherford	$ (199)	$ (256)	$ (708)	$ (875)
Loss Per Share Attributable to Weatherford:
Earnings Per Share, Basic and Diluted	$ (0.20)	$ (0.26)	$ (0.71)	$ (0.88)
Weighted Average Shares Outstanding:
Weighted Average Number of Shares Outstanding, Basic and Diluted	998	990	996	989
Products
Revenue from Contract with Customer	$ 508	$ 535	$ 1,471	$ 1,534
Services
Revenue from Contract with Customer	$ 936	$ 925	$ 2,844	$ 2,675

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net Loss	$ (194)	$ (251)	$ (695)	$ (859)
Other Comprehensive Income (Loss), Net of Tax:
Currency Translation Adjustments	(9)	91	(170)	165
Defined Benefit Pension Activity	0	(3)	1	(44)
Other Comprehensive Income (Loss)	(9)	88	(169)	121
Comprehensive Loss	(203)	(163)	(864)	(738)
Comprehensive Income Attributable to Noncontrolling Interests	5	5	13	16
Comprehensive Loss Attributable to Weatherford	$ (208)	$ (168)	$ (877)	$ (754)

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Current Assets:
Cash and Cash Equivalents	$ 393	$ 613
Accounts Receivable, Net of Allowance for Uncollectible Accounts of $138 in 2018 and $156 in 2017	1,155	1,103
Inventories, Net	1,097	1,234
Prepaid Expenses	133	237
Other Current Assets	334	332
Assets Held for Sale	618	359
Total Current Assets	3,730	3,878
Property, Plant and Equipment, Net of Accumulated Depreciation of $6,839 in 2018 and $7,462 in 2017	2,157	2,708
Goodwill	2,632	2,727
Other Intangible Assets, Net of Accumulated Amortization of $736 in 2018 and $870 in 2017	192	213
Other Non-Current Assets	127	221
Total Assets	8,838	9,747
Current Liabilities:
Short-term Borrowings and Current Portion of Long-term Debt	396	148
Accounts Payable	728	856
Accrued Salaries and Benefits	241	308
Income Taxes Payable	231	228
Other Current Liabilities	654	690
Disposal Group, Including Discontinued Operation, Liabilities, Current	49	0
Total Current Liabilities	2,299	2,230
Long-term Debt	7,626	7,541
Other Non-Current Liabilities	421	547
Total Liabilities	10,346	10,318
Shareholders’ (Deficiency) Equity:
Shares - Par Value $0.001; Authorized 1,356 shares, Issued and Outstanding 1,000 shares at September 30, 2018 and 993 shares at December 31, 2017	1	1
Capital in Excess of Par Value	6,702	6,655
Retained Deficit	(6,568)	(5,763)
Accumulated Other Comprehensive Loss	(1,688)	(1,519)
Weatherford Shareholders’ Deficiency	(1,553)	(626)
Noncontrolling Interests	45	55
Total Shareholders’ Deficiency	(1,508)	(571)
Total Liabilities and Shareholders’ Deficiency	$ 8,838	$ 9,747

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Current Assets:
Allowance for Uncollectible Accounts	$ 138	$ 156
Noncurrent Assets:
Accumulated Depreciation of Property, Plant and Equipment	6,839	7,462
Accumulated Amortization of Other Intangible Assets	$ 736	$ 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)	1,000,000,000	993,000,000
Common Stock, Outstanding (in shares)	1,000,000,000	993,000,000
Treasury Shares, at cost (in shares)	0	0

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash Flows from Operating Activities:
Net Loss	$ (695)	$ (859)
Adjustments to Reconcile Net Loss to Net Cash Provided by (Used in) Operating Activities:
Depreciation and Amortization	419	611
Share-based compensation	38	55
Impairment of Long-Lived Assets to be Disposed of	111	0
Inventory Write-down	69	66
Restructuring Costs and Asset Impairment Charges	73	36
Increase (Decrease) in Obligation, Pension Benefits	0	(47)
Provision for Doubtful Accounts	(17)	3
Bond Tender and Call Premium	(34)	0
Deferred Income Tax Benefit	(1)	(7)
Currency Devaluation Charges	45	0
Warrant Fair Value Adjustment	(67)	(58)
Other, Net	(38)	71
Change in Operating Assets and Liabilities, Net of Effect of Businesses Acquired:
Accounts Receivable	(101)	(77)
Inventories	33	(94)
Other Current Assets	(70)	55
Accounts Payable	(90)	(44)
Accrued Litigation and Settlements	(24)	(93)
Other Current Liabilities	(16)	(35)
Other, Net	(50)	(67)
Net Cash Used in Operating Activities	(347)	(484)
Cash Flows From Investing Activities:
Capital Expenditures for Property, Plant and Equipment	(111)	(147)
Capital Expenditures for and Acquisition of Assets Held for Sale	(30)	(244)
Acquisitions of Businesses, Net of Cash Acquired	4	(7)
Acquisition of Intellectual Property	(11)	(13)
Proceeds from Sale of Assets	70	36
Proceeds (Payments) from Sale of Businesses and Equity Investment, Net	37	(1)
Payments for (Proceeds from) Other Investing Activities	0	25
Net Cash Used in Investing Activities	(41)	(401)
Cash Flows From Financing Activities:
Borrowings of Long-term Debt	586	250
Repayments of Long-term Debt	(471)	(53)
Borrowings of Short-term Debt, Net	170	118
Bond Tender Premium	(34)	0
Other Financing Activities	(28)	(28)
Net Cash Provided by Financing Activities	223	287
Effect of Exchange Rate Changes on Cash and Cash Equivalents	(55)	6
Net Decrease in Cash and Cash Equivalents	(220)	(592)
Cash and Cash Equivalents at Beginning of Period	613	1,037
Cash and Cash Equivalents at End of Period	393	445
Supplemental Cash Flow Information:
Interest Paid	439	434
Income Taxes Paid, Net of Refunds	87	71
Capital Lease Obligations Incurred	$ 23	$ 24

General

General	9 Months Ended
	Sep. 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 September 30, 2018 and December 31, 2017 , Condensed Consolidated Statements of Operations and Condensed Consolidated Statements of Comprehensive Loss for the three and nine months ended September 30, 2018 and 2017 and Condensed Consolidated Statements of Cash Flows for the nine months ended September 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 nine months ended September 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 and liabilities 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 nine months ended September 30, 2017 have been made to conform to the presentation for the three and nine months ended September 30, 2018 . See “ Note 2 – New Accounting Pronouncements ” for additional details regarding accounting changes impacting the Condensed Consolidated Financial Statements . Currency Devaluation Charges and Functional Currency Designation For the third quarter and the first nine months ended September 30, 2018 , we recognized currency devaluation charges of $8 million and $45 million , respectively, primarily related to the devaluation of the Angolan kwanza. The devaluation of the Angolan kwanza was due to a change in Angolan central bank policy in January 2018. For the third quarter and the first nine months ended September 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 . As of June 30, 2018, the economy of Argentina was deemed to be highly inflationary and effective July 1, 2018, we changed the functional currency of our Argentine operations from an Argentine peso functional currency to a U.S. dollar functional currency. For the third quarter ended September 30, 2018 , the functional currency change resulted in an immaterial currency loss on the Argentine peso denominated net assets held by our subsidiaries.

New Accounting Pronouncements

New Accounting Pronouncements	9 Months Ended
	Sep. 30, 2018
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
New Accounting Pronouncements	New Accounting Pronouncements Accounting Changes In May 2014, the Financial Accounting Standards Board (“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 ) In August 2018, the FASB issued ASU 2018-15, Intangibles — Goodwill and Other — Internal-Use Software (Subtopic 350-40), Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract, which requires a customer in a cloud computing arrangement that is a service contract to follow the internal-use software guidance in Accounting Standards Codification (ASC) 350-40 to determine which implementation costs to capitalize as assets. This standard will reduce diversity in practice in accounting for the costs of implementing cloud computing arrangements that are service contracts. We elected to early adopt ASU 2018-15 as we currently apply such guidance to our cloud computing arrangements. The adoption of this ASU has no material impact on our Consolidated Financial Statements. In March 2017, the 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 of $6 million and $42 million of income for the third quarter and the first nine months of 2017, respectively, 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. 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 August 2018, the FASB issued ASU 2018-14, Compensation — Retirement Benefits — Defined Benefit Plans — General (Subtopic 715-20): Disclosure Framework — Changes to the Disclosure Requirements for Defined Benefit Plans, which makes minor changes to the disclosure requirements for employers that sponsor defined benefit pension and other postretirement benefit plans. The ASU is effective beginning with the first quarter of 2021, and early adoption is permitted. The ASU is required to be applied retrospectively. This new standard will not have a significant impact on our Consolidated Financial Statements. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework — Changes to the Disclosure Requirements for Fair Value Measurement, which eliminates, adds and modifies certain disclosure requirements for fair value measurements as part of its disclosure framework project. The ASU is effective beginning with the first quarter of 2020, and early adoption is permitted. The ASU is required to be applied retrospectively, except the new Level 3 disclosure requirements which are applied prospectively. We have evaluated the impact that this new standard will have on our Consolidated Financial Statements and concluded adoption of the ASU will not have a significant impact. 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 right-of-use 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 right-of-use 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 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

Revenues	9 Months Ended
	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Revenues	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, service and rental revenues from contracts with customers by major product line and geographic region for the third quarter and the first nine months ended September 30, 2018 : Three Months Ended September 30, 2018 (Dollars in millions) Western Hemisphere Eastern Hemisphere Total Excluding Rental Revenues Rental Revenues Total Revenues Product Lines: Production $ 293 $ 89 $ 382 $ 1 $ 383 Completions 154 149 303 — 303 Drilling and Evaluation 152 201 353 4 357 Well Construction 106 225 331 70 401 Total $ 705 $ 664 $ 1,369 $ 75 $ 1,444 Nine Months Ended September 30, 2018 (Dollars in millions) Western Hemisphere Eastern Hemisphere Total Excluding Rental Revenues Rental Revenues Total Revenues Product Lines: Production $ 887 $ 270 $ 1,157 $ 1 $ 1,158 Completions 459 440 899 1 900 Drilling and Evaluation 449 575 1,024 32 1,056 Well Construction 294 671 965 236 1,201 Total $ 2,089 $ 1,956 $ 4,045 $ 270 $ 4,315 Three Months Ended September 30, 2018 Nine Months Ended September 30, 2018 (Dollars in millions) Geographic Areas: United States $ 359 $ 1,050 Latin America 258 754 Canada 88 285 Western Hemisphere 705 2,089 Middle East & North Africa 355 1,074 Europe/Sub-Sahara Africa/Russia 230 671 Asia 79 211 Eastern Hemisphere 664 1,956 Total Product and Service Revenue before Rental Revenues 1,369 4,045 Rental Revenues 75 270 Total Revenues $ 1,444 $ 4,315 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 September 30, 2018 and January 1, 2018, respectively: (Dollars in millions) September 30, 2018 January 1, 2018 Receivables for Product and Services in Accounts Receivable, Net $ 1,066 $ 1,081 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 third quarter and the first nine months ended September 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 at January 1, 2018 $ 10 $ 42 Revenue recognized that was included in the deferred revenue balance at the beginning of the period — (74 ) Increase due to cash received, excluding amount recognized as revenue during the period — 75 Increase due to revenue recognized during the period but contingent on future performance 11 — Transferred to receivables from contract assets recognized at the beginning of the period (7 ) — Changes as a result of adjustments due to changes in estimates or contract modifications — 26 Impairment of contract assets (5 ) — Reclassification to Held for Sale (2 ) (3 ) Balance at September 30, 2018 $ 7 $ 66 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 September 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 $ 14 $ 61 $ 33 $ 18 $ 37 $ 163 Product revenue 4 — — — — 4 Total $ 18 $ 61 $ 33 $ 18 $ 37 $ 167 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 Dives

Business Combinations and Divestitures	9 Months Ended
	Sep. 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 $22 million , PP&E of $ 25 million , goodwill of $27 million , other current assets of $16 million and other liabilities of $43 million as a result of the purchase accounting assessment and is remeasured in the allowable period as needed. For the third quarter and nine months ended September 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 . In the third quarter of 2018, we completed the sale of an equity investment in a joint venture for $12.5 million and recognized a gain of $3 million . We did not complete the sale of any other businesses in the nine months ended September 30, 2018 . Held for Sale Assets qualifying as held for sale total $618 million at September 30, 2018 and consist of PP&E and other net assets of $484 million , allocated goodwill of $60 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 three and nine months ended September 30, 2018 . Liabilities in held for sale total $49 million at September 30, 2018 . 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 , 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 is held in escrow and will be 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 fourth quarter of 2018. As a result of entering into certain purchase and sale agreements as asset sales, we recognized asset write-down charges in the third quarter of $50 million for deferred mobilization costs and other rigs related assets as such costs were no longer recoverable, as well as the $18 million impairment charge described below. W e have continued to pursue options to sell our remaining rig assets. During the third quarter of 2018, we corrected an immaterial error relating to our estimates of recoverability of certain assets associated with the original and ongoing valuation of the assets and liabilities classified as held for sale associated with our planned disposition of our land drilling rig operations. We recorded an $18 million charge to “Long-Lived Asset Impairments, Asset Write-Downs and Other” in our Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2018 . The charge would have affected “Long-Lived Asset Impairments, Asset Write-Downs and Other” expense, operating loss, and loss before income taxes for the year ended December 31, 2017 by $18 million . The charge would not have affected our compliance with financial covenants under our revolving and term loan credit facilities if it had been recorded in the prior periods or in the period ended September 30, 2018 , and did not have an impact to cash flow from operating activities or any other cash flow measures for those periods. On October 18, 2018, we entered into a sale and purchase agreement to sell our laboratory services business to Oil & Gas Labs, LLC, an affiliate of CSL Capital Management, L.P., for an aggregate purchase price of $205 million in cash, subject to customary post-closing working capital adjustments.

Restructuring and Transformatio

Restructuring and Transformation Charges	9 Months Ended
	Sep. 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 few years, we continue to reduce our overall cost structure and workforce to better align our business 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 $27 million and $90 million in the third quarter and the first nine months of 2018 , respectively, which include termination (severance) charges of $6 million and $46 million , respectively, and other restructuring charges of $21 million and $44 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 $34 million and $140 million in the third quarter and the first nine months of 2017 , respectively, which include termination (severance) charges of $15 million and $71 million , respectively, and other restructuring charges of $19 million and $57 million , respectively. The first nine 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 third quarter and nine months ended September 30, 2018 and 2017 . Three Months Ended September 30, 2018 Total (Dollars in millions) Severance Other Severance and Transformation Plan Charges Charges Other Charges Western Hemisphere $ 2 $ 2 $ 4 Eastern Hemisphere 2 3 5 Corporate 2 16 18 Total $ 6 $ 21 $ 27 Three Months Ended September 30, 2017 Total (Dollars in millions) Severance Other Severance and 2016-17 Plan Charges Charges Other Charges Western Hemisphere $ 8 $ 2 $ 10 Eastern Hemisphere 6 16 22 Corporate 1 1 2 Total $ 15 $ 19 $ 34 Nine Months Ended September 30, 2018 Total (Dollars in millions) Severance Other Severance and Transformation Plan Charges Charges Other Charges Western Hemisphere $ 17 $ 4 $ 21 Eastern Hemisphere 20 12 32 Corporate 9 28 37 Total $ 46 $ 44 $ 90 Nine Months Ended September 30, 2017 Total (Dollars in millions) Severance Other Severance and 2016-17 Plan Charges Charges Other Charges Western Hemisphere $ 23 $ 26 $ 49 Eastern Hemisphere 24 38 62 Corporate 24 5 29 Total $ 71 $ 69 $ 140 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 Plans that will be paid pursuant to the respective arrangements and statutory requirements. At September 30, 2018 Transformation Plan 2016-17 Plans Total Severance Severance Other Severance Other and Other (Dollars in millions) Liability Liability Liability Liability Liability Western Hemisphere $ 6 $ — $ 2 $ 9 $ 17 Eastern Hemisphere 2 1 2 15 20 Corporate 7 17 5 — 29 Total $ 15 $ 18 $ 9 $ 24 $ 66 The following table presents the restructuring liability activity for the first nine months of 2018 . Nine Months Ended September 30, 2018 (Dollars in millions) Accrued Balance at December 31, 2017 Charges Cash Payments Other Accrued Balance at September 30, 2018 Transformation Plan Severance liability $ — $ 46 $ (27 ) $ (4 ) $ 15 Other restructuring liability — $ 44 $ (22 ) $ (4 ) $ 18 2016-17 Plans Severance liability 21 — (12 ) — 9 Other restructuring liability 40 — (14 ) (2 ) 24 Total severance and other restructuring liability $ 61 $ 90 $ (75 ) $ (10 ) $ 66

Accounts Receivable Factoring a

Accounts Receivable Factoring and Other Receivables	9 Months Ended
	Sep. 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 nine months of 2018 , we sold accounts receivable of $284 million and recognized a loss of $2 million on these sales. We received cash proceeds totaling $278 million . In the first nine months of 2017 , we sold accounts receivable of $150 million and recognized a loss of $1 million . Our factoring transactions in the first nine 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, we converted trade receivables of $65 million into a note from a 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 .

Inventories, Net

Inventories, Net	9 Months Ended
	Sep. 30, 2018
Inventory Disclosure [Abstract]
Inventories, Net	Inventories, Net Inventories, net of reserves, by category were as follows: (Dollars in millions) September 30, 2018 December 31, 2017 Raw materials, components and supplies $ 146 $ 144 Work in process 57 47 Finished goods 894 1,043 $ 1,097 $ 1,234

Asset Impairments and Write-Dow

Asset Impairments and Write-Downs Asset Impairments and Write-Downs	9 Months Ended
	Sep. 30, 2018
Property, Plant and Equipment [Abstract]
Asset Impairments and Write-Downs	Asset Impairments and Write-Downs For the three months ended September 30, 2018, we recognized $19 million of long-lived asset impairments and $50 million of asset write-downs for deferred mobilization costs and other rigs related assets, all of which were in the Eastern Hemisphere segment. The long-lived asset impairments were to write-down our assets to the lower of carrying amount or fair value less cost to sell for our land drilling rigs. See Note 4 – Business Combinations and Divestitures for more details. For the nine months ended September 30, 2018 , we recognized $111 million in long-lived asset impairments and $50 million of asset write-downs for deferred mobilization costs and other rigs related assets, of which, $101 million was to write-down our assets to the lower of carrying amount or fair value less cost to sell for our land drilling rigs. Of the long-lived asset impairment charges $34 million was in our Western Hemisphere segment and $67 million in our Eastern Hemisphere segment. The remaining $10 million of charges were for long-lived asset impairment charges 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

Goodwill	9 Months Ended
	Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	Goodwill The changes in the carrying amount of goodwill by reportable segment for the nine months ended September 30, 2018 , were as follows: (Dollars in millions) Western Hemisphere Eastern Hemisphere Total Balance at December 31, 2017 $ 1,958 $ 769 $ 2,727 Acquisitions — 27 27 Dispositions (8 ) — (8 ) Reclassification to assets held for sale (44 ) (16 ) (60 ) Foreign currency translation adjustments (35 ) (19 ) (54 ) Balance at September 30, 2018 $ 1,871 $ 761 $ 2,632

Short-term Borrowings and Other

Short-term Borrowings and Other Debt Obligations	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Short-term Borrowings and Other Debt Obligations	Short-Term Borrowings and Other Debt Obligations (Dollars in millions) September 30, 2018 December 31, 2017 364-Day Credit Agreement $ 317 $ — A&R Credit Agreement — — Other Short-term Loans 18 11 Current Portion of Long-term Debt 61 137 Short-term Borrowings and Current Portion of Long-term Debt $ 396 $ 148 Revolving Credit Agreements and Term Loan Agreement On August 16, 2018, we amended and restated our existing Revolving Credit Agreement, entered into a Secured Second Lien 364-Day Revolving Credit Agreement and amended certain terms of our existing Term Loan Agreement. At September 30, 2018 , we have two revolving credit agreements with total commitments of $900 million , comprised of an unsecured senior revolving credit agreement (the “A&R Credit Agreement”) in the amount of $583 million , and a Secured Second Lien 364-Day Revolving Credit Agreement (the “364-Day Credit Agreement” and, together with the A&R Credit Agreement, the “Revolving Credit Agreements”) in the amount of $317 million . At September 30, 2018 , we have principal borrowings of $338 million under the Term Loan Agreement. We c ollectively refer to our Revolving Credit Agreements and Term Loan Agreement as the “Credit Agreements.” Under the terms of the A&R Credit Agreement, commitments of $226 million from non-extending lenders (“non-extending lenders”) will mature on July 12, 2019 and commitments of $357 million from extending lenders (“extending lenders”) will mature on July 13, 2020. Commitments from our extending lenders will reduce by $54 million on November 14, 2018. The 364-Day Credit Agreement matures on August 15, 2019. The A&R Credit Agreement and Term Loan Agreement were amended to permit the debt and the liens to be incurred under the 364-Day Credit Agreement and to make other modifications related to factoring of receivables, senior borrowings, permitted liens, and covenants. At September 30, 2018 , we had total borrowing availability of $378 million available under our Credit Agreements. The following tables summarizes our Credit Agreements borrowing capacity utilization and availability: (Dollars in millions) September 30, 2018 Facilities $ 1,238 Less uses of facilities: 364-Day Credit Agreement 317 A&R Credit Agreement — Letters of Credit 205 Term Loan Principal Borrowing 338 Borrowing Availability $ 378 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 A&R Credit Agreement. For the three months ended September 30, 2018 , the interest rate for the A&R Credit Agreement was LIBOR plus a margin rate of 3.55% for extending lenders and LIBOR plus a margin rate of 2.80% for non-extending lenders. For the three months ended September 30, 2018 , the interest rate for borrowings under our Term Loan Agreement and 364-Day Credit Agreement were LIBOR plus a margin rate of 2.30% and LIBOR plus a margin rate of 3.05% , 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 an asset coverage ratio of at least 4.0 to 1 and a current asset coverage ratio of at least 1.5 to 1, in each case with the terms and definitions for the ratios as provided in the Credit Agreements. Subsequent to September 30, 2018 , we must maintain a current asset coverage ratio of at least 2.1 to 1. The Term Loan Agreement and 364-Day Credit Agreement require us to pledge assets as collateral in order to borrow under the credit facility. At September 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 Consolidated Financial Statements contained in our Annual Report on Form 10-K for the year ended December 31, 2017 and the credit agreements filed on Form 8-K on August 20, 2018. 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 September 30, 2018 , we had $18 million in short-term borrowings under these arrangements. In addition, we had $326 million of letters of credit under various uncommitted facilities and $205 million of letters of credit under the A&R Credit Agreement. At September 30, 2018 , we have cash collateralized $93 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 September 30, 2018 .

Fair Value of Financial Instrum

Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	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 September 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) September 30, 2018 December 31, 2017 Fair Value $ 6,710 $ 7,060 Carrying Value 7,276 7,218

Derivative Instruments

Derivative Instruments	9 Months Ended
	Sep. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	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 $3 million on September 30, 2018 and $70 million on December 31, 2017, generating unrealized gains of $11 million and $67 million for the third quarter and the first nine months of 2018, respectively. In 2017, we recognized unrealized loss of $7 million and gain of $58 million for the third quarter and the first nine months of 2017 , respectively . The change in fair value of the warrant during the first nine 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 September 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 September 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 September 30, 2018 , we had net unamortized losses of $8 million associated with our cash flow hedge terminations. As of September 30, 2018 , we did not have any cash flow hedges designated. Foreign Currency and Warrant Derivative Instruments At September 30, 2018 and December 31, 2017 , we had outstanding foreign currency forward contracts with notional amounts aggregating to $488 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) September 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 (2 ) (4 ) Other Current Liabilities Warrant on Weatherford Shares (3 ) (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 September 30, Nine Months Ended September 30, (Dollars in millions) 2018 2017 2018 2017 Classification Foreign currency forward contracts $ (5 ) $ 2 $ (5 ) $ (20 ) Other Income (Expense), Net Warrant on Weatherford Shares 11 (7 ) 67 58 Warrant Fair Value Adjustment

Income Taxes

Income Taxes	9 Months Ended
	Sep. 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 third quarter and the nine months ended September 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 third quarter and the first nine months of 2018 , we had a tax expense of $22 million and $80 million , respectively, on a loss before income taxes of $172 million and $615 million , respectively. Results for the third quarter and the first nine months of 2018 include losses with no significant tax benefit. The tax expense for the third quarter and the first nine 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 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 has been identified in the nine months of 2018 and we do not expect a material change to the provision in the fourth quarter. We will continue to monitor and assess additional guidance that may be issued in the fourth quarter which may impact our estimate. 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 $19 million in the next twelve months due to expiration of statutes of limitations, settlements and/or conclusions of tax examinations. For the third quarter and the first nine months of 2017 , we had a tax expense of $25 million and $75 million , respectively, on a loss before income taxes of $226 million and $784 million , respectively. Results for the third quarter and the first nine months of 2017 include losses with no significant tax benefit. The tax expense for the third quarter and the first nine months of 2017 also included withholding taxes, minimum taxes and deemed profit taxes that do not directly correlate to ordinary income or loss.

Shareholders' Equity

Shareholders' Equity	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Shareholders' Equity	Shareholders’ Equity The following summarizes our shareholders’ equity activity for the first nine 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) — — (875 ) — 16 (859 ) Other Comprehensive Income — — — 121 — 121 Dividends Paid to Noncontrolling Interests — — — — (16 ) (16 ) Equity Awards Granted, Vested and Exercised — 70 — — — 70 Balance at September 30, 2017 $ 1 $ 6,641 $ (3,825 ) $ (1,489 ) $ 56 $ 1,384 Balance at December 31, 2017 $ 1 $ 6,655 $ (5,763 ) $ (1,519 ) $ 55 $ (571 ) Net Income (Loss) — — (708 ) — 13 (695 ) Other Comprehensive Income — — — (169 ) — (169 ) Dividends Paid to Noncontrolling Interests — — — — (13 ) (13 ) Equity Awards Granted, Vested and Exercised — 43 — — — 43 Adoption of Intra-Entity Transfers of Assets Other Than Inventory and Revenue from Contracts with Customers — — (97 ) — — (97 ) Other — 4 — — (10 ) (6 ) Balance at September 30, 2018 $ 1 $ 6,702 $ (6,568 ) $ (1,688 ) $ 45 $ (1,508 ) The following table presents the changes in our accumulated other comprehensive loss by component for the first nine 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 165 — — 165 Reclassifications — (44 ) — (44 ) Net activity 165 (44 ) — 121 Balance at September 30, 2017 $ (1,449 ) $ (31 ) $ (9 ) $ (1,489 ) Balance at December 31, 2017 $ (1,484 ) $ (26 ) $ (9 ) $ (1,519 ) Other Comprehensive Income before Reclassifications (170 ) — — (170 ) Reclassifications — 1 — 1 Net activity (170 ) 1 — (169 ) Balance at September 30, 2018 $ (1,654 ) $ (25 ) $ (9 ) $ (1,688 ) For the nine months ended September 30, 2017 , defined benefit pension reclassifications relate to amortization of unrecognized net gains associated primarily with our supplemental executive retirement plan.

Earnings per Share

Earnings per Share	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Earnings per Share	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 third quarter and the first nine months of 2018 and 2017 : Three Months Ended September 30, Nine Months Ended September 30, (Shares in millions) 2018 2017 2018 2017 Basic and Diluted weighted average shares outstanding 998 990 996 989 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 third quarter and the first nine 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 third quarter and the first nine months of 2018 and 2017 : Three Months Ended September 30, Nine Months Ended September 30, (Shares in millions) 2018 2017 2018 2017 Anti-dilutive potential shares due to net loss 251 250 251 250

Share-Based Compensation

Share-Based Compensation	9 Months Ended
	Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Compensation	Share-Based Compensation We recognized the following employee share-based compensation expense during the third quarter and the first nine months of 2018 and 2017 : Three Months Ended September 30, Nine Months Ended September 30, (Dollars in millions) 2018 2017 2018 2017 Share-based compensation $ 11 $ 14 $ 38 $ 55 Related tax benefit — — — — During the first nine 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 $5.29 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 $3.85 . As of September 30, 2018 , there was $12 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 nine months of 2018 , we also granted 4.4 million restricted share units at a weighted average grant date fair value of $3.53 per share. As of September 30, 2018 , there was $39 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

Segment Information	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Segment Information	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 September 30, 2018 (Dollars in millions) Revenues Income (Loss) from Operations Depreciation and Amortization Western Hemisphere $ 762 $ 78 $ 46 Eastern Hemisphere 682 38 81 1,444 116 127 Corporate General and Administrative (31 ) 1 Restructuring and Transformation Charges (27 ) Long-Lived Asset Impairments, Asset Write-Downs and Other (a) (71 ) Total $ 1,444 $ (13 ) $ 128 (a) Includes long-lived asset impairments and other asset write-downs primarily related to deferred mobilization costs and other assets of the land drilling rigs business. Three Months Ended September 30, 2017 (Dollars in millions) Revenues Income (Loss) from Operations Depreciation and Amortization Western Hemisphere $ 767 $ 3 $ 89 Eastern Hemisphere 693 (10 ) 108 1,460 (7 ) 197 Corporate General and Administrative (28 ) 2 Restructuring Charges (34 ) Asset Write-Downs and Other (1 ) Total $ 1,460 $ (70 ) $ 199 Nine Months Ended September 30, 2018 (Dollars in millions) Revenues Income (Loss) from Operations Depreciation and Amortization Western Hemisphere $ 2,287 $ 152 $ 162 Eastern Hemisphere 2,028 73 251 4,315 225 413 Corporate General and Administrative (101 ) 6 Restructuring and Transformation Charges (90 ) Long-Lived Asset Impairments, Asset Write-Downs and Other (b) (159 ) Total $ 4,315 $ (125 ) $ 419 (b) Includes long-lived asset impairments and other asset write-downs primarily related to deferred mobilization costs and other assets of the land drilling rigs business, and inventory charges, partially offset by gains primarily from the purchase of a remaining interest in a joint venture and a reduction of a contingency reserve on a legacy contract. Nine Months Ended September 30, 2017 (Dollars in millions) Revenues Loss from Operations Depreciation and Amortization Western Hemisphere $ 2,178 $ (78 ) $ 272 Eastern Hemisphere 2,031 (91 ) 334 4,209 (169 ) 606 Corporate General and Administrative (94 ) 5 Restructuring Charges (140 ) Asset Write-Downs and Other (26 ) Total $ 4,209 $ (429 ) $ 611

Disputes, Litigation and Contin

Disputes, Litigation and Contingencies	9 Months Ended
	Sep. 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. 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. On October 16, 2018, the PTAB issued an IPR decision finding that all of the claims of the ‘501 patent are invalid. 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 September 30, 2018 and December 31, 2017 were $32 million and $51 million , respectively. Other Contingencies We have minimum purchase commitments related to a supply contract and maintain a liability at September 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 Financi

Condensed Consolidating Financial Statements	9 Months Ended
	Sep. 30, 2018
Condensed Financial Information Disclosure [Abstract]
Condensed Consolidating Financial Statements	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 September 30, 2018 and December 31, 2017 . At September 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 September 30, 2018 and December 31, 2017 : (1) A&R Credit Agreement, (2) Term Loan Agreement, (3) 364-Day Credit Agreement(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 and the 9.625% senior notes due 2019, which were repaid in full through early redemption of the bond in April 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 September 30, 2018 (Unaudited) (Dollars in millions) Weatherford Ireland Weatherford Bermuda Weatherford Delaware Other Subsidiaries Eliminations Consolidation Revenues $ — $ — $ — $ 1,444 $ — $ 1,444 Costs and Expenses (2 ) — — (1,455 ) — (1,457 ) Operating Income (Loss) (2 ) — — (11 ) — (13 ) Other Income (Expense): Interest Expense, Net — (141 ) (26 ) 5 6 (156 ) Intercompany Charges, Net 6 113 (7 ) (118 ) 6 — Equity in Subsidiary Income (Loss) (214 ) 93 8 — 113 — Other, Net 11 42 46 (55 ) (47 ) (3 ) Income (Loss) Before Income Taxes (199 ) 107 21 (179 ) 78 (172 ) (Provision) Benefit for Income Taxes — — — (22 ) — (22 ) Net Income (Loss) (199 ) 107 21 (201 ) 78 (194 ) Noncontrolling Interests — — — 5 — 5 Net Income (Loss) Attributable to Weatherford $ (199 ) $ 107 $ 21 $ (206 ) $ 78 $ (199 ) Comprehensive Income (Loss) Attributable to Weatherford $ (208 ) $ 91 $ 16 $ (214 ) $ 107 $ (208 ) Condensed Consolidating Statement of Operations and Comprehensive Income (Loss) Three Months Ended September 30, 2017 (Unaudited) (Dollars in millions) Weatherford Ireland Weatherford Bermuda Weatherford Delaware Other Subsidiaries Eliminations Consolidation Revenues $ — $ — $ — $ 1,460 $ — $ 1,460 Costs and Expenses (3 ) 6 1 (1,534 ) — (1,530 ) Operating Income (Loss) (3 ) 6 1 (74 ) — (70 ) Other Income (Expense): Interest Expense, Net — (149 ) (10 ) 6 5 (148 ) Intercompany Charges, Net (2 ) 1 (59 ) 60 — — Equity in Subsidiary Income (244 ) (518 ) (445 ) — 1,207 — Other, Net (7 ) (54 ) (53 ) 54 52 (8 ) Income (Loss) Before Income Taxes (256 ) (714 ) (566 ) 46 1,264 (226 ) (Provision) Benefit for Income Taxes — — — (25 ) — (25 ) Net Income (Loss) (256 ) (714 ) (566 ) 21 1,264 (251 ) Noncontrolling Interests — — — 5 — 5 Net Income (Loss) Attributable to Weatherford $ (256 ) $ (714 ) $ (566 ) $ 16 $ 1,264 $ (256 ) Comprehensive Income (Loss) Attributable to Weatherford $ (168 ) $ (687 ) $ (538 ) $ 104 $ 1,121 $ (168 ) Condensed Consolidating Statement of Operations and Comprehensive Income (Loss) Nine Months Ended September 30, 2018 (Unaudited) (Dollars in millions) Weatherford Ireland Weatherford Bermuda Weatherford Delaware Other Subsidiaries Eliminations Consolidation Revenues $ — $ — $ — $ 4,315 $ — $ 4,315 Costs and Expenses (5 ) — — (4,435 ) — (4,440 ) Operating Income (Loss) (5 ) — — (120 ) — (125 ) Other Income (Expense): Interest Expense, Net — (422 ) (65 ) 14 16 (457 ) Intercompany Charges, Net (9 ) 115 (36 ) (793 ) 723 — Equity in Subsidiary Income (Loss) (761 ) (229 ) (148 ) — 1,138 — Other, Net 67 142 179 (240 ) (181 ) (33 ) Income (Loss) Before Income Taxes (708 ) (394 ) (70 ) (1,139 ) 1,696 (615 ) (Provision) Benefit for Income Taxes — — — (80 ) — (80 ) Net Income (Loss) (708 ) (394 ) (70 ) (1,219 ) 1,696 (695 ) Noncontrolling Interests — — — 13 — 13 Net Income (Loss) Attributable to Weatherford $ (708 ) $ (394 ) $ (70 ) $ (1,232 ) $ 1,696 $ (708 ) Comprehensive Income (Loss) Attributable to Weatherford $ (877 ) $ (436 ) $ (41 ) $ (1,401 ) $ 1,878 $ (877 ) Condensed Consolidating Statement of Operations and Comprehensive Income (Loss) Nine Months Ended September 30, 2017 (Unaudited) (Dollars in millions) Weatherford Ireland Weatherford Bermuda Weatherford Delaware Other Subsidiaries Eliminations Consolidation Revenues $ — $ — $ — $ 4,209 $ — $ 4,209 Costs and Expenses (11 ) 45 2 (4,674 ) — (4,638 ) Operating Income (Loss) (11 ) 45 2 (465 ) — (429 ) Other Income (Expense): Interest Expense, Net — (432 ) (30 ) 21 14 (427 ) Intercompany Charges, Net 2 (89 ) (102 ) 189 — — Equity in Subsidiary Income (924 ) (650 ) (265 ) — 1,839 — Other, Net 58 (23 ) (1 ) 40 (2 ) 72 Income (Loss) Before Income Taxes (875 ) (1,149 ) (396 ) (215 ) 1,851 (784 ) (Provision) Benefit for Income Taxes — — — (75 ) — (75 ) Net Income (Loss) (875 ) (1,149 ) (396 ) (290 ) 1,851 (859 ) Noncontrolling Interests — — — 16 — 16 Net Income (Loss) Attributable to Weatherford $ (875 ) $ (1,149 ) $ (396 ) $ (306 ) $ 1,851 $ (875 ) Comprehensive Income (Loss) Attributable to Weatherford $ (754 ) $ (1,153 ) $ (436 ) $ (184 ) $ 1,773 $ (754 ) Condensed Consolidating Balance Sheet September 30, 2018 (Unaudited) (Dollars in millions) Weatherford Ireland Weatherford Bermuda Weatherford Delaware Other Subsidiaries Eliminations Consolidation Current Assets: Cash and Cash Equivalents $ — $ 66 $ — $ 327 $ — $ 393 Other Current Assets 1 — 477 3,372 (513 ) 3,337 Total Current Assets 1 66 477 3,699 (513 ) 3,730 Equity Investments in Affiliates (1,562 ) 8,003 7,882 400 (14,723 ) — Intercompany Receivables, Net 14 384 — 2,569 (2,967 ) — Other Assets — 49 47 5,090 (78 ) 5,108 Total Assets $ (1,547 ) $ 8,502 $ 8,406 $ 11,758 $ (18,281 ) $ 8,838 Current Liabilities: Short-term Borrowings and Current Portion of Long-Term Debt $ — $ 377 $ — $ 19 $ — $ 396 Accounts Payable and Other Current Liabilities 6 137 — 2,272 (512 ) 1,903 Total Current Liabilities 6 514 — 2,291 (512 ) 2,299 Long-term Debt — 6,645 768 140 73 7,626 Intercompany Payables, Net — — 2,967 — (2,967 ) — Other Long-term Liabilities — — — 421 — 421 Total Liabilities 6 7,159 3,735 2,852 (3,406 ) 10,346 Weatherford Shareholders’ Equity (1,553 ) 1,343 4,671 8,861 (14,875 ) (1,553 ) Noncontrolling Interests — — — 45 — 45 Total Liabilities and Shareholders’ Equity $ (1,547 ) $ 8,502 $ 8,406 $ 11,758 $ (18,281 ) $ 8,838 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 Nine Months Ended September 30, 2018 (Unaudited) (Dollars in millions) Weatherford Ireland Weatherford Bermuda Weatherford Delaware Other Subsidiaries Eliminations Consolidation Cash Flows from Operating Activities: Net Income (Loss) $ (708 ) $ (394 ) $ (70 ) $ (1,219 ) $ 1,696 $ (695 ) Adjustments to Reconcile Net Income (Loss) to Net Cash Provided (Used) by Operating Activities: Charges from Parent or Subsidiary 9 (115 ) 36 793 (723 ) — Equity in (Earnings) Loss of Affiliates 761 229 148 — (1,138 ) — Deferred Income Tax Provision (Benefit) — — — (1 ) (1 ) Other Adjustments 74 566 (1,485 ) 1,029 165 349 Net Cash Provided (Used) by Operating Activities 136 286 (1,371 ) 602 — (347 ) Cash Flows from Investing Activities: Capital Expenditures for Property, Plant and Equipment — — — (111 ) — (111 ) Capital Expenditures for Assets Held for Sale — — — (30 ) — (30 ) Acquisitions of Businesses, Net of Cash Acquired — — — 4 — 4 Acquisition of Intellectual Property — — — (11 ) — (11 ) Proceeds from Sale of Assets — — — 70 — 70 Proceeds from Sale of Businesses and Equity Investment, Net — — — 37 — 37 Net Cash Provided (Used) by Investing Activities — — — (41 ) — (41 ) Cash Flows from Financing Activities: Borrowings (Repayments) Short-term Debt, Net — 192 — (22 ) — 170 Borrowings (Repayments) Long-term Debt, Net — (464 ) 587 (8 ) — 115 Borrowings (Repayments) Between Subsidiaries, Net (136 ) (143 ) 784 (505 ) — — Other, Net — — — (62 ) — (62 ) Net Cash Provided (Used) by Financing Activities (136 ) (415 ) 1,371 (597 ) — 223 Effect of Exchange Rate Changes On Cash and Cash Equivalents — — — (55 ) — (55 ) Net Increase (Decrease) in Cash and Cash Equivalents — (129 ) — (91 ) — (220 ) Cash and Cash Equivalents at Beginning of Period — 195 — 418 — 613 Cash and Cash Equivalents at End of Period $ — $ 66 $ — $ 327 $ — $ 393 Condensed Consolidating Statement of Cash Flows Nine Months Ended September 30, 2017 (Unaudited) (Dollars in millions) Weatherford Ireland Weatherford Bermuda Weatherford Delaware Other Subsidiaries Eliminations Consolidation Cash Flows from Operating Activities: Net Income (Loss) $ (875 ) $ (1,149 ) $ (396 ) $ (290 ) $ 1,851 $ (859 ) Adjustments to Reconcile Net Income(Loss) to Net Cash Provided (Used) by Operating Activities: Charges from Parent or Subsidiary (2 ) 89 102 (189 ) — — Equity in (Earnings) Loss of Affiliates 924 650 265 — (1,839 ) — Deferred Income Tax Provision (Benefit) — — — (7 ) — (7 ) Other Adjustments (129 ) 241 52 230 (12 ) 382 Net Cash Provided (Used) by Operating Activities (82 ) (169 ) 23 (256 ) — (484 ) Cash Flows from Investing Activities: Capital Expenditures for Property, Plant and Equipment — — — (147 ) — (147 ) Acquisition of Assets Held for Sale — — — (244 ) — (244 ) Acquisition of Business, Net of Cash Acquired — — — (7 ) — (7 ) Acquisition of Intellectual Property — — — (13 ) — (13 ) Proceeds from Sale of Assets and Businesses, Net — — — 36 — 36 Proceeds (Payments) from Sale of Businesses, Net — — — (1 ) — (1 ) Other Investing Activities — — — (25 ) — (25 ) Net Cash Provided (Used) by Investing Activities — — — (401 ) — (401 ) Cash Flows from Financing Activities: Borrowings (Repayments) Short-term Debt, Net — 225 — (107 ) — 118 Borrowings (Repayments) Long-term Debt, Net — 212 (94 ) 79 — 197 Borrowings (Repayments) Between Subsidiaries, Net 82 (797 ) 67 648 — — Other, Net — — — (28 ) — (28 ) Net Cash Provided (Used) by Financing Activities 82 (360 ) (27 ) 592 — 287 Effect of Exchange Rate Changes On Cash and Cash Equivalents — — — 6 — 6 Net Increase (Decrease) in Cash and Cash Equivalents — (529 ) (4 ) (59 ) — (592 ) Cash and Cash Equivalents at Beginning of Period — 586 4 447 — 1,037 Cash and Cash Equivalents at End of Period $ — $ 57 $ — $ 388 $ — $ 445

Subsequent Event

Subsequent Event	9 Months Ended
	Sep. 30, 2018
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event On October 18, 2018, we entered into a sale and purchase agreement to sell our laboratory services business to Oil & Gas Labs, LLC, an affiliate of CSL Capital Management, L.P., for an aggregate purchase price of $205 million in cash, subject to customary post-closing working capital adjustments. The business to be sold includes our laboratory and geological analysis business, including substantially all employees, personnel and associated contracts related to the business. The transaction is expected to close before December 31, 2018, subject to receipt of regulatory approvals and third-party consents, as well as other customary closing conditions. On November 1, 2018, we announced the closing of the first portion of the ADES transaction relating to our land drilling rig operations in Kuwait and received $123 million in cash. This closing is the first in a series of four closings, the majority of which are expected to be completed by year-end 2018.

General (Policies)

General (Policies)	9 Months Ended
	Sep. 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 September 30, 2018 and December 31, 2017 , Condensed Consolidated Statements of Operations and Condensed Consolidated Statements of Comprehensive Loss for the three and nine months ended September 30, 2018 and 2017 and Condensed Consolidated Statements of Cash Flows for the nine months ended September 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 nine months ended September 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 and liabilities 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 nine months ended September 30, 2017 have been made to conform to the presentation for the three and nine months ended September 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 and Functional Currency Designation For the third quarter and the first nine months ended September 30, 2018 , we recognized currency devaluation charges of $8 million and $45 million , respectively, primarily related to the devaluation of the Angolan kwanza. The devaluation of the Angolan kwanza was due to a change in Angolan central bank policy in January 2018. For the third quarter and the first nine months ended September 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 . As of June 30, 2018, the economy of Argentina was deemed to be highly inflationary and effective July 1, 2018, we changed the functional currency of our Argentine operations from an Argentine peso functional currency to a U.S. dollar functional currency. For the third quarter ended September 30, 2018 , the functional currency change resulted in an immaterial currency loss on the Argentine peso denominated net assets held by our subsidiaries.

New Accounting Pronouncements N

New Accounting Pronouncements New Accounting Pronouncements (Policies)	9 Months Ended
	Sep. 30, 2018
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
New Accounting Pronouncements	New Accounting Pronouncements Accounting Changes In May 2014, the Financial Accounting Standards Board (“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 ) In August 2018, the FASB issued ASU 2018-15, Intangibles — Goodwill and Other — Internal-Use Software (Subtopic 350-40), Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract, which requires a customer in a cloud computing arrangement that is a service contract to follow the internal-use software guidance in Accounting Standards Codification (ASC) 350-40 to determine which implementation costs to capitalize as assets. This standard will reduce diversity in practice in accounting for the costs of implementing cloud computing arrangements that are service contracts. We elected to early adopt ASU 2018-15 as we currently apply such guidance to our cloud computing arrangements. The adoption of this ASU has no material impact on our Consolidated Financial Statements. In March 2017, the 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 of $6 million and $42 million of income for the third quarter and the first nine months of 2017, respectively, 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. 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 August 2018, the FASB issued ASU 2018-14, Compensation — Retirement Benefits — Defined Benefit Plans — General (Subtopic 715-20): Disclosure Framework — Changes to the Disclosure Requirements for Defined Benefit Plans, which makes minor changes to the disclosure requirements for employers that sponsor defined benefit pension and other postretirement benefit plans. The ASU is effective beginning with the first quarter of 2021, and early adoption is permitted. The ASU is required to be applied retrospectively. This new standard will not have a significant impact on our Consolidated Financial Statements. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework — Changes to the Disclosure Requirements for Fair Value Measurement, which eliminates, adds and modifies certain disclosure requirements for fair value measurements as part of its disclosure framework project. The ASU is effective beginning with the first quarter of 2020, and early adoption is permitted. The ASU is required to be applied retrospectively, except the new Level 3 disclosure requirements which are applied prospectively. We have evaluated the impact that this new standard will have on our Consolidated Financial Statements and concluded adoption of the ASU will not have a significant impact. 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 right-of-use 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 right-of-use 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 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.

New Accounting Pronouncements (

New Accounting Pronouncements (Tables)	9 Months Ended
	Sep. 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)

Revenues (Tables)	9 Months Ended
	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregation of Revenue	The following tables disaggregate our product, service and rental revenues from contracts with customers by major product line and geographic region for the third quarter and the first nine months ended September 30, 2018 : Three Months Ended September 30, 2018 (Dollars in millions) Western Hemisphere Eastern Hemisphere Total Excluding Rental Revenues Rental Revenues Total Revenues Product Lines: Production $ 293 $ 89 $ 382 $ 1 $ 383 Completions 154 149 303 — 303 Drilling and Evaluation 152 201 353 4 357 Well Construction 106 225 331 70 401 Total $ 705 $ 664 $ 1,369 $ 75 $ 1,444 Nine Months Ended September 30, 2018 (Dollars in millions) Western Hemisphere Eastern Hemisphere Total Excluding Rental Revenues Rental Revenues Total Revenues Product Lines: Production $ 887 $ 270 $ 1,157 $ 1 $ 1,158 Completions 459 440 899 1 900 Drilling and Evaluation 449 575 1,024 32 1,056 Well Construction 294 671 965 236 1,201 Total $ 2,089 $ 1,956 $ 4,045 $ 270 $ 4,315 Three Months Ended September 30, 2018 Nine Months Ended September 30, 2018 (Dollars in millions) Geographic Areas: United States $ 359 $ 1,050 Latin America 258 754 Canada 88 285 Western Hemisphere 705 2,089 Middle East & North Africa 355 1,074 Europe/Sub-Sahara Africa/Russia 230 671 Asia 79 211 Eastern Hemisphere 664 1,956 Total Product and Service Revenue before Rental Revenues 1,369 4,045 Rental Revenues 75 270 Total Revenues $ 1,444 $ 4,315
Schedule of Contract with Customer, Asset and Liability	The following table provides information about receivables for product and services included in “Accounts Receivable, Net” at September 30, 2018 and January 1, 2018, respectively: (Dollars in millions) September 30, 2018 January 1, 2018 Receivables for Product and Services in Accounts Receivable, Net $ 1,066 $ 1,081 Significant changes in the contract assets and liabilities balances during the period are as follows: (Dollars in millions) Contract Assets Contract Liabilities Balance at January 1, 2018 $ 10 $ 42 Revenue recognized that was included in the deferred revenue balance at the beginning of the period — (74 ) Increase due to cash received, excluding amount recognized as revenue during the period — 75 Increase due to revenue recognized during the period but contingent on future performance 11 — Transferred to receivables from contract assets recognized at the beginning of the period (7 ) — Changes as a result of adjustments due to changes in estimates or contract modifications — 26 Impairment of contract assets (5 ) — Reclassification to Held for Sale (2 ) (3 ) Balance at September 30, 2018 $ 7 $ 66
Schedule of Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction	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 September 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 $ 14 $ 61 $ 33 $ 18 $ 37 $ 163 Product revenue 4 — — — — 4 Total $ 18 $ 61 $ 33 $ 18 $ 37 $ 167

Restructuring and Transformat_2

Restructuring and Transformation Charges (Tables)	9 Months Ended
	Sep. 30, 2018
Restructuring and Related Activities [Abstract]
Schedule of Restructuring Charges	The following tables present the components of restructuring charges by segment for the third quarter and nine months ended September 30, 2018 and 2017 . Three Months Ended September 30, 2018 Total (Dollars in millions) Severance Other Severance and Transformation Plan Charges Charges Other Charges Western Hemisphere $ 2 $ 2 $ 4 Eastern Hemisphere 2 3 5 Corporate 2 16 18 Total $ 6 $ 21 $ 27 Three Months Ended September 30, 2017 Total (Dollars in millions) Severance Other Severance and 2016-17 Plan Charges Charges Other Charges Western Hemisphere $ 8 $ 2 $ 10 Eastern Hemisphere 6 16 22 Corporate 1 1 2 Total $ 15 $ 19 $ 34 Nine Months Ended September 30, 2018 Total (Dollars in millions) Severance Other Severance and Transformation Plan Charges Charges Other Charges Western Hemisphere $ 17 $ 4 $ 21 Eastern Hemisphere 20 12 32 Corporate 9 28 37 Total $ 46 $ 44 $ 90 Nine Months Ended September 30, 2017 Total (Dollars in millions) Severance Other Severance and 2016-17 Plan Charges Charges Other Charges Western Hemisphere $ 23 $ 26 $ 49 Eastern Hemisphere 24 38 62 Corporate 24 5 29 Total $ 71 $ 69 $ 140 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 Plans that will be paid pursuant to the respective arrangements and statutory requirements. At September 30, 2018 Transformation Plan 2016-17 Plans Total Severance Severance Other Severance Other and Other (Dollars in millions) Liability Liability Liability Liability Liability Western Hemisphere $ 6 $ — $ 2 $ 9 $ 17 Eastern Hemisphere 2 1 2 15 20 Corporate 7 17 5 — 29 Total $ 15 $ 18 $ 9 $ 24 $ 66
Schedule of Restructuring Reserve by Type of Cost	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 Plans that will be paid pursuant to the respective arrangements and statutory requirements. At September 30, 2018 Transformation Plan 2016-17 Plans Total Severance Severance Other Severance Other and Other (Dollars in millions) Liability Liability Liability Liability Liability Western Hemisphere $ 6 $ — $ 2 $ 9 $ 17 Eastern Hemisphere 2 1 2 15 20 Corporate 7 17 5 — 29 Total $ 15 $ 18 $ 9 $ 24 $ 66 The following table presents the restructuring liability activity for the first nine months of 2018 . Nine Months Ended September 30, 2018 (Dollars in millions) Accrued Balance at December 31, 2017 Charges Cash Payments Other Accrued Balance at September 30, 2018 Transformation Plan Severance liability $ — $ 46 $ (27 ) $ (4 ) $ 15 Other restructuring liability — $ 44 $ (22 ) $ (4 ) $ 18 2016-17 Plans Severance liability 21 — (12 ) — 9 Other restructuring liability 40 — (14 ) (2 ) 24 Total severance and other restructuring liability $ 61 $ 90 $ (75 ) $ (10 ) $ 66

Inventories, Net (Tables)

Inventories, Net (Tables)	9 Months Ended
	Sep. 30, 2018
Inventory Disclosure [Abstract]
Components of Inventory	Inventories, net of reserves, by category were as follows: (Dollars in millions) September 30, 2018 December 31, 2017 Raw materials, components and supplies $ 146 $ 144 Work in process 57 47 Finished goods 894 1,043 $ 1,097 $ 1,234

Goodwill (Tables)

Goodwill (Tables)	9 Months Ended
	Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The changes in the carrying amount of goodwill by reportable segment for the nine months ended September 30, 2018 , were as follows: (Dollars in millions) Western Hemisphere Eastern Hemisphere Total Balance at December 31, 2017 $ 1,958 $ 769 $ 2,727 Acquisitions — 27 27 Dispositions (8 ) — (8 ) Reclassification to assets held for sale (44 ) (16 ) (60 ) Foreign currency translation adjustments (35 ) (19 ) (54 ) Balance at September 30, 2018 $ 1,871 $ 761 $ 2,632

Short-term Borrowings and Oth_2

Short-term Borrowings and Other Debt Obligations (Tables)	9 Months Ended
	Sep. 30, 2018
Line of Credit Facility [Line Items]
Schedule of Short-term Debt [Table Text Block]	(Dollars in millions) September 30, 2018 December 31, 2017 364-Day Credit Agreement $ 317 $ — A&R Credit Agreement — — Other Short-term Loans 18 11 Current Portion of Long-term Debt 61 137 Short-term Borrowings and Current Portion of Long-term Debt $ 396 $ 148
Schedule of Line of Credit Facilities [Table Text Block]	: (Dollars in millions) September 30, 2018 Facilities $ 1,238 Less uses of facilities: 364-Day Credit Agreement 317 A&R Credit Agreement — Letters of Credit 205 Term Loan Principal Borrowing 338 Borrowing Availability $ 378

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 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) September 30, 2018 December 31, 2017 Fair Value $ 6,710 $ 7,060 Carrying Value 7,276 7,218

Derivative Instruments (Tables)

Derivative Instruments (Tables)	9 Months Ended
	Sep. 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) September 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 (2 ) (4 ) Other Current Liabilities Warrant on Weatherford Shares (3 ) (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 September 30, Nine Months Ended September 30, (Dollars in millions) 2018 2017 2018 2017 Classification Foreign currency forward contracts $ (5 ) $ 2 $ (5 ) $ (20 ) Other Income (Expense), Net Warrant on Weatherford Shares 11 (7 ) 67 58 Warrant Fair Value Adjustment

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Schedule of Stockholders' Equity	The following summarizes our shareholders’ equity activity for the first nine 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) — — (875 ) — 16 (859 ) Other Comprehensive Income — — — 121 — 121 Dividends Paid to Noncontrolling Interests — — — — (16 ) (16 ) Equity Awards Granted, Vested and Exercised — 70 — — — 70 Balance at September 30, 2017 $ 1 $ 6,641 $ (3,825 ) $ (1,489 ) $ 56 $ 1,384 Balance at December 31, 2017 $ 1 $ 6,655 $ (5,763 ) $ (1,519 ) $ 55 $ (571 ) Net Income (Loss) — — (708 ) — 13 (695 ) Other Comprehensive Income — — — (169 ) — (169 ) Dividends Paid to Noncontrolling Interests — — — — (13 ) (13 ) Equity Awards Granted, Vested and Exercised — 43 — — — 43 Adoption of Intra-Entity Transfers of Assets Other Than Inventory and Revenue from Contracts with Customers — — (97 ) — — (97 ) Other — 4 — — (10 ) (6 ) Balance at September 30, 2018 $ 1 $ 6,702 $ (6,568 ) $ (1,688 ) $ 45 $ (1,508 )
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table presents the changes in our accumulated other comprehensive loss by component for the first nine 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 165 — — 165 Reclassifications — (44 ) — (44 ) Net activity 165 (44 ) — 121 Balance at September 30, 2017 $ (1,449 ) $ (31 ) $ (9 ) $ (1,489 ) Balance at December 31, 2017 $ (1,484 ) $ (26 ) $ (9 ) $ (1,519 ) Other Comprehensive Income before Reclassifications (170 ) — — (170 ) Reclassifications — 1 — 1 Net activity (170 ) 1 — (169 ) Balance at September 30, 2018 $ (1,654 ) $ (25 ) $ (9 ) $ (1,688 )

Earnings per Share (Tables)

Earnings per Share (Tables)	9 Months Ended
	Sep. 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 third quarter and the first nine months of 2018 and 2017 : Three Months Ended September 30, Nine Months Ended September 30, (Shares in millions) 2018 2017 2018 2017 Basic and Diluted weighted average shares outstanding 998 990 996 989
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	The following table discloses the number of anti-dilutive shares excluded for the third quarter and the first nine months of 2018 and 2017 : Three Months Ended September 30, Nine Months Ended September 30, (Shares in millions) 2018 2017 2018 2017 Anti-dilutive potential shares due to net loss 251 250 251 250

Share-Based Compensation (Table

Share-Based Compensation (Tables)	9 Months Ended
	Sep. 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 third quarter and the first nine months of 2018 and 2017 : Three Months Ended September 30, Nine Months Ended September 30, (Dollars in millions) 2018 2017 2018 2017 Share-based compensation $ 11 $ 14 $ 38 $ 55 Related tax benefit — — — —

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Financial information by segment	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 September 30, 2018 (Dollars in millions) Revenues Income (Loss) from Operations Depreciation and Amortization Western Hemisphere $ 762 $ 78 $ 46 Eastern Hemisphere 682 38 81 1,444 116 127 Corporate General and Administrative (31 ) 1 Restructuring and Transformation Charges (27 ) Long-Lived Asset Impairments, Asset Write-Downs and Other (a) (71 ) Total $ 1,444 $ (13 ) $ 128 (a) Includes long-lived asset impairments and other asset write-downs primarily related to deferred mobilization costs and other assets of the land drilling rigs business. Three Months Ended September 30, 2017 (Dollars in millions) Revenues Income (Loss) from Operations Depreciation and Amortization Western Hemisphere $ 767 $ 3 $ 89 Eastern Hemisphere 693 (10 ) 108 1,460 (7 ) 197 Corporate General and Administrative (28 ) 2 Restructuring Charges (34 ) Asset Write-Downs and Other (1 ) Total $ 1,460 $ (70 ) $ 199 Nine Months Ended September 30, 2018 (Dollars in millions) Revenues Income (Loss) from Operations Depreciation and Amortization Western Hemisphere $ 2,287 $ 152 $ 162 Eastern Hemisphere 2,028 73 251 4,315 225 413 Corporate General and Administrative (101 ) 6 Restructuring and Transformation Charges (90 ) Long-Lived Asset Impairments, Asset Write-Downs and Other (b) (159 ) Total $ 4,315 $ (125 ) $ 419 (b) Includes long-lived asset impairments and other asset write-downs primarily related to deferred mobilization costs and other assets of the land drilling rigs business, and inventory charges, partially offset by gains primarily from the purchase of a remaining interest in a joint venture and a reduction of a contingency reserve on a legacy contract. Nine Months Ended September 30, 2017 (Dollars in millions) Revenues Loss from Operations Depreciation and Amortization Western Hemisphere $ 2,178 $ (78 ) $ 272 Eastern Hemisphere 2,031 (91 ) 334 4,209 (169 ) 606 Corporate General and Administrative (94 ) 5 Restructuring Charges (140 ) Asset Write-Downs and Other (26 ) Total $ 4,209 $ (429 ) $ 611

Condensed Consolidating Finan_2

Condensed Consolidating Financial Statements (Tables)	9 Months Ended
	Sep. 30, 2018
Condensed Financial Information Disclosure [Abstract]
Condensed Consolidating Statement of Operations	Condensed Consolidating Statement of Operations and Comprehensive Income (Loss) Three Months Ended September 30, 2018 (Unaudited) (Dollars in millions) Weatherford Ireland Weatherford Bermuda Weatherford Delaware Other Subsidiaries Eliminations Consolidation Revenues $ — $ — $ — $ 1,444 $ — $ 1,444 Costs and Expenses (2 ) — — (1,455 ) — (1,457 ) Operating Income (Loss) (2 ) — — (11 ) — (13 ) Other Income (Expense): Interest Expense, Net — (141 ) (26 ) 5 6 (156 ) Intercompany Charges, Net 6 113 (7 ) (118 ) 6 — Equity in Subsidiary Income (Loss) (214 ) 93 8 — 113 — Other, Net 11 42 46 (55 ) (47 ) (3 ) Income (Loss) Before Income Taxes (199 ) 107 21 (179 ) 78 (172 ) (Provision) Benefit for Income Taxes — — — (22 ) — (22 ) Net Income (Loss) (199 ) 107 21 (201 ) 78 (194 ) Noncontrolling Interests — — — 5 — 5 Net Income (Loss) Attributable to Weatherford $ (199 ) $ 107 $ 21 $ (206 ) $ 78 $ (199 ) Comprehensive Income (Loss) Attributable to Weatherford $ (208 ) $ 91 $ 16 $ (214 ) $ 107 $ (208 ) Condensed Consolidating Statement of Operations and Comprehensive Income (Loss) Three Months Ended September 30, 2017 (Unaudited) (Dollars in millions) Weatherford Ireland Weatherford Bermuda Weatherford Delaware Other Subsidiaries Eliminations Consolidation Revenues $ — $ — $ — $ 1,460 $ — $ 1,460 Costs and Expenses (3 ) 6 1 (1,534 ) — (1,530 ) Operating Income (Loss) (3 ) 6 1 (74 ) — (70 ) Other Income (Expense): Interest Expense, Net — (149 ) (10 ) 6 5 (148 ) Intercompany Charges, Net (2 ) 1 (59 ) 60 — — Equity in Subsidiary Income (244 ) (518 ) (445 ) — 1,207 — Other, Net (7 ) (54 ) (53 ) 54 52 (8 ) Income (Loss) Before Income Taxes (256 ) (714 ) (566 ) 46 1,264 (226 ) (Provision) Benefit for Income Taxes — — — (25 ) — (25 ) Net Income (Loss) (256 ) (714 ) (566 ) 21 1,264 (251 ) Noncontrolling Interests — — — 5 — 5 Net Income (Loss) Attributable to Weatherford $ (256 ) $ (714 ) $ (566 ) $ 16 $ 1,264 $ (256 ) Comprehensive Income (Loss) Attributable to Weatherford $ (168 ) $ (687 ) $ (538 ) $ 104 $ 1,121 $ (168 ) Condensed Consolidating Statement of Operations and Comprehensive Income (Loss) Nine Months Ended September 30, 2018 (Unaudited) (Dollars in millions) Weatherford Ireland Weatherford Bermuda Weatherford Delaware Other Subsidiaries Eliminations Consolidation Revenues $ — $ — $ — $ 4,315 $ — $ 4,315 Costs and Expenses (5 ) — — (4,435 ) — (4,440 ) Operating Income (Loss) (5 ) — — (120 ) — (125 ) Other Income (Expense): Interest Expense, Net — (422 ) (65 ) 14 16 (457 ) Intercompany Charges, Net (9 ) 115 (36 ) (793 ) 723 — Equity in Subsidiary Income (Loss) (761 ) (229 ) (148 ) — 1,138 — Other, Net 67 142 179 (240 ) (181 ) (33 ) Income (Loss) Before Income Taxes (708 ) (394 ) (70 ) (1,139 ) 1,696 (615 ) (Provision) Benefit for Income Taxes — — — (80 ) — (80 ) Net Income (Loss) (708 ) (394 ) (70 ) (1,219 ) 1,696 (695 ) Noncontrolling Interests — — — 13 — 13 Net Income (Loss) Attributable to Weatherford $ (708 ) $ (394 ) $ (70 ) $ (1,232 ) $ 1,696 $ (708 ) Comprehensive Income (Loss) Attributable to Weatherford $ (877 ) $ (436 ) $ (41 ) $ (1,401 ) $ 1,878 $ (877 ) Condensed Consolidating Statement of Operations and Comprehensive Income (Loss) Nine Months Ended September 30, 2017 (Unaudited) (Dollars in millions) Weatherford Ireland Weatherford Bermuda Weatherford Delaware Other Subsidiaries Eliminations Consolidation Revenues $ — $ — $ — $ 4,209 $ — $ 4,209 Costs and Expenses (11 ) 45 2 (4,674 ) — (4,638 ) Operating Income (Loss) (11 ) 45 2 (465 ) — (429 ) Other Income (Expense): Interest Expense, Net — (432 ) (30 ) 21 14 (427 ) Intercompany Charges, Net 2 (89 ) (102 ) 189 — — Equity in Subsidiary Income (924 ) (650 ) (265 ) — 1,839 — Other, Net 58 (23 ) (1 ) 40 (2 ) 72 Income (Loss) Before Income Taxes (875 ) (1,149 ) (396 ) (215 ) 1,851 (784 ) (Provision) Benefit for Income Taxes — — — (75 ) — (75 ) Net Income (Loss) (875 ) (1,149 ) (396 ) (290 ) 1,851 (859 ) Noncontrolling Interests — — — 16 — 16 Net Income (Loss) Attributable to Weatherford $ (875 ) $ (1,149 ) $ (396 ) $ (306 ) $ 1,851 $ (875 ) Comprehensive Income (Loss) Attributable to Weatherford $ (754 ) $ (1,153 ) $ (436 ) $ (184 ) $ 1,773 $ (754 )
Condensed Consolidating Balance Sheet	Condensed Consolidating Statement of Operations and Comprehensive Income (Loss) Nine Months Ended September 30, 2018 (Unaudited) (Dollars in millions) Weatherford Ireland Weatherford Bermuda Weatherford Delaware Other Subsidiaries Eliminations Consolidation Revenues $ — $ — $ — $ 4,315 $ — $ 4,315 Costs and Expenses (5 ) — — (4,435 ) — (4,440 ) Operating Income (Loss) (5 ) — — (120 ) — (125 ) Other Income (Expense): Interest Expense, Net — (422 ) (65 ) 14 16 (457 ) Intercompany Charges, Net (9 ) 115 (36 ) (793 ) 723 — Equity in Subsidiary Income (Loss) (761 ) (229 ) (148 ) — 1,138 — Other, Net 67 142 179 (240 ) (181 ) (33 ) Income (Loss) Before Income Taxes (708 ) (394 ) (70 ) (1,139 ) 1,696 (615 ) (Provision) Benefit for Income Taxes — — — (80 ) — (80 ) Net Income (Loss) (708 ) (394 ) (70 ) (1,219 ) 1,696 (695 ) Noncontrolling Interests — — — 13 — 13 Net Income (Loss) Attributable to Weatherford $ (708 ) $ (394 ) $ (70 ) $ (1,232 ) $ 1,696 $ (708 ) Comprehensive Income (Loss) Attributable to Weatherford $ (877 ) $ (436 ) $ (41 ) $ (1,401 ) $ 1,878 $ (877 ) Condensed Consolidating Statement of Operations and Comprehensive Income (Loss) Nine Months Ended September 30, 2017 (Unaudited) (Dollars in millions) Weatherford Ireland Weatherford Bermuda Weatherford Delaware Other Subsidiaries Eliminations Consolidation Revenues $ — $ — $ — $ 4,209 $ — $ 4,209 Costs and Expenses (11 ) 45 2 (4,674 ) — (4,638 ) Operating Income (Loss) (11 ) 45 2 (465 ) — (429 ) Other Income (Expense): Interest Expense, Net — (432 ) (30 ) 21 14 (427 ) Intercompany Charges, Net 2 (89 ) (102 ) 189 — — Equity in Subsidiary Income (924 ) (650 ) (265 ) — 1,839 — Other, Net 58 (23 ) (1 ) 40 (2 ) 72 Income (Loss) Before Income Taxes (875 ) (1,149 ) (396 ) (215 ) 1,851 (784 ) (Provision) Benefit for Income Taxes — — — (75 ) — (75 ) Net Income (Loss) (875 ) (1,149 ) (396 ) (290 ) 1,851 (859 ) Noncontrolling Interests — — — 16 — 16 Net Income (Loss) Attributable to Weatherford $ (875 ) $ (1,149 ) $ (396 ) $ (306 ) $ 1,851 $ (875 ) Comprehensive Income (Loss) Attributable to Weatherford $ (754 ) $ (1,153 ) $ (436 ) $ (184 ) $ 1,773 $ (754 ) Condensed Consolidating Balance Sheet September 30, 2018 (Unaudited) (Dollars in millions) Weatherford Ireland Weatherford Bermuda Weatherford Delaware Other Subsidiaries Eliminations Consolidation Current Assets: Cash and Cash Equivalents $ — $ 66 $ — $ 327 $ — $ 393 Other Current Assets 1 — 477 3,372 (513 ) 3,337 Total Current Assets 1 66 477 3,699 (513 ) 3,730 Equity Investments in Affiliates (1,562 ) 8,003 7,882 400 (14,723 ) — Intercompany Receivables, Net 14 384 — 2,569 (2,967 ) — Other Assets — 49 47 5,090 (78 ) 5,108 Total Assets $ (1,547 ) $ 8,502 $ 8,406 $ 11,758 $ (18,281 ) $ 8,838 Current Liabilities: Short-term Borrowings and Current Portion of Long-Term Debt $ — $ 377 $ — $ 19 $ — $ 396 Accounts Payable and Other Current Liabilities 6 137 — 2,272 (512 ) 1,903 Total Current Liabilities 6 514 — 2,291 (512 ) 2,299 Long-term Debt — 6,645 768 140 73 7,626 Intercompany Payables, Net — — 2,967 — (2,967 ) — Other Long-term Liabilities — — — 421 — 421 Total Liabilities 6 7,159 3,735 2,852 (3,406 ) 10,346 Weatherford Shareholders’ Equity (1,553 ) 1,343 4,671 8,861 (14,875 ) (1,553 ) Noncontrolling Interests — — — 45 — 45 Total Liabilities and Shareholders’ Equity $ (1,547 ) $ 8,502 $ 8,406 $ 11,758 $ (18,281 ) $ 8,838 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	Condensed Consolidating Statement of Cash Flows Nine Months Ended September 30, 2018 (Unaudited) (Dollars in millions) Weatherford Ireland Weatherford Bermuda Weatherford Delaware Other Subsidiaries Eliminations Consolidation Cash Flows from Operating Activities: Net Income (Loss) $ (708 ) $ (394 ) $ (70 ) $ (1,219 ) $ 1,696 $ (695 ) Adjustments to Reconcile Net Income (Loss) to Net Cash Provided (Used) by Operating Activities: Charges from Parent or Subsidiary 9 (115 ) 36 793 (723 ) — Equity in (Earnings) Loss of Affiliates 761 229 148 — (1,138 ) — Deferred Income Tax Provision (Benefit) — — — (1 ) (1 ) Other Adjustments 74 566 (1,485 ) 1,029 165 349 Net Cash Provided (Used) by Operating Activities 136 286 (1,371 ) 602 — (347 ) Cash Flows from Investing Activities: Capital Expenditures for Property, Plant and Equipment — — — (111 ) — (111 ) Capital Expenditures for Assets Held for Sale — — — (30 ) — (30 ) Acquisitions of Businesses, Net of Cash Acquired — — — 4 — 4 Acquisition of Intellectual Property — — — (11 ) — (11 ) Proceeds from Sale of Assets — — — 70 — 70 Proceeds from Sale of Businesses and Equity Investment, Net — — — 37 — 37 Net Cash Provided (Used) by Investing Activities — — — (41 ) — (41 ) Cash Flows from Financing Activities: Borrowings (Repayments) Short-term Debt, Net — 192 — (22 ) — 170 Borrowings (Repayments) Long-term Debt, Net — (464 ) 587 (8 ) — 115 Borrowings (Repayments) Between Subsidiaries, Net (136 ) (143 ) 784 (505 ) — — Other, Net — — — (62 ) — (62 ) Net Cash Provided (Used) by Financing Activities (136 ) (415 ) 1,371 (597 ) — 223 Effect of Exchange Rate Changes On Cash and Cash Equivalents — — — (55 ) — (55 ) Net Increase (Decrease) in Cash and Cash Equivalents — (129 ) — (91 ) — (220 ) Cash and Cash Equivalents at Beginning of Period — 195 — 418 — 613 Cash and Cash Equivalents at End of Period $ — $ 66 $ — $ 327 $ — $ 393 Condensed Consolidating Statement of Cash Flows Nine Months Ended September 30, 2017 (Unaudited) (Dollars in millions) Weatherford Ireland Weatherford Bermuda Weatherford Delaware Other Subsidiaries Eliminations Consolidation Cash Flows from Operating Activities: Net Income (Loss) $ (875 ) $ (1,149 ) $ (396 ) $ (290 ) $ 1,851 $ (859 ) Adjustments to Reconcile Net Income(Loss) to Net Cash Provided (Used) by Operating Activities: Charges from Parent or Subsidiary (2 ) 89 102 (189 ) — — Equity in (Earnings) Loss of Affiliates 924 650 265 — (1,839 ) — Deferred Income Tax Provision (Benefit) — — — (7 ) — (7 ) Other Adjustments (129 ) 241 52 230 (12 ) 382 Net Cash Provided (Used) by Operating Activities (82 ) (169 ) 23 (256 ) — (484 ) Cash Flows from Investing Activities: Capital Expenditures for Property, Plant and Equipment — — — (147 ) — (147 ) Acquisition of Assets Held for Sale — — — (244 ) — (244 ) Acquisition of Business, Net of Cash Acquired — — — (7 ) — (7 ) Acquisition of Intellectual Property — — — (13 ) — (13 ) Proceeds from Sale of Assets and Businesses, Net — — — 36 — 36 Proceeds (Payments) from Sale of Businesses, Net — — — (1 ) — (1 ) Other Investing Activities — — — (25 ) — (25 ) Net Cash Provided (Used) by Investing Activities — — — (401 ) — (401 ) Cash Flows from Financing Activities: Borrowings (Repayments) Short-term Debt, Net — 225 — (107 ) — 118 Borrowings (Repayments) Long-term Debt, Net — 212 (94 ) 79 — 197 Borrowings (Repayments) Between Subsidiaries, Net 82 (797 ) 67 648 — — Other, Net — — — (28 ) — (28 ) Net Cash Provided (Used) by Financing Activities 82 (360 ) (27 ) 592 — 287 Effect of Exchange Rate Changes On Cash and Cash Equivalents — — — 6 — 6 Net Increase (Decrease) in Cash and Cash Equivalents — (529 ) (4 ) (59 ) — (592 ) Cash and Cash Equivalents at Beginning of Period — 586 4 447 — 1,037 Cash and Cash Equivalents at End of Period $ — $ 57 $ — $ 388 $ — $ 445

General - Devaluation (Details

General - Devaluation (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Foreign exchange related charges	$ 8	$ 0	$ 45	$ 0

New Accounting Pronouncements_2

New Accounting Pronouncements New Accounting Pronouncements - Topic 606 (Details) - USD ($) $ in Millions	Sep. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Other Current Assets	$ 334	$ 342	$ 332
Other Liabilities, Current	654	692	690
Retained Deficit	$ (6,568)	(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_3

New Accounting Pronouncements New Accounting Pronouncements - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Mar. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of income	$ 1,457	$ 1,530	$ 4,440	$ 4,638
Reclassification of income	$ (6)	(1)	$ (21)	14
Prepaid taxes					$ 105
Accounting Standards Update 2017-07
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of income		6		42
Reclassification of income		$ 6		$ 42

Revenues - Major Product Line (

Revenues - Major Product Line (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Rental Revenues	$ 75		$ 270
Total Revenues	1,444	$ 1,460	4,315	$ 4,209
Production
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	382		1,157
Rental Revenues	1		1
Total Revenues	383		1,158
Completions
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	303		899
Rental Revenues	0		1
Total Revenues	303		900
Drilling and Evaluation
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	353		1,024
Rental Revenues	4		32
Total Revenues	357		1,056
Well Construction
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	331		965
Rental Revenues	70		236
Total Revenues	401		1,201
606 revenue [Member]
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	1,369		4,045
Western Hemisphere
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	705		2,089
Western Hemisphere | Production
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	293		887
Western Hemisphere | Completions
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	154		459
Western Hemisphere | Drilling and Evaluation
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	152		449
Western Hemisphere | Well Construction
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	106		294
Eastern Hemisphere
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	664		1,956
Eastern Hemisphere | Production
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	89		270
Eastern Hemisphere | Completions
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	149		440
Eastern Hemisphere | Drilling and Evaluation
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	201		575
Eastern Hemisphere | Well Construction
Disaggregation of Revenue [Line Items]
Total Excluding Rental Revenues	$ 225		$ 671

Revenues - Geographic Areas (De

Revenues - Geographic Areas (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Rental Revenues	$ 75		$ 270
Total Revenues	1,444	$ 1,460	4,315	$ 4,209
Western Hemisphere
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	705		2,089
Western Hemisphere | United States
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	359		1,050
Western Hemisphere | Latin America
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	258		754
Western Hemisphere | Canada
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	88		285
Eastern Hemisphere
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	664		1,956
Eastern Hemisphere | Middle East and North Africa
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	355		1,074
Eastern Hemisphere | Europe, Sub-Sahara Africa, Russia
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	230		671
Eastern Hemisphere | Asia
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	79		211
Combined Company Segment 606 Revenue [Member]
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	$ 1,369		$ 4,045

Revenues - Receivables (Details

Revenues - Receivables (Details) - USD ($) $ in Millions	Sep. 30, 2018	Jan. 01, 2018
Revenue from Contract with Customer [Abstract]
Receivables for Product and Services in Accounts Receivable, Net	$ 1,066	$ 1,081

Revenues - Contract Assets and

Revenues - Contract Assets and Liabilities (Details) $ in Millions	9 Months Ended
	Sep. 30, 2018USD ($)
Contract Assets
Balance at January 1, 2018	$ 10
Increase due to revenue recognized during the period but contingent on future performance	11
Transferred to receivables from contract assets recognized at the beginning of the period	(7)
Contract with Customer, Asset, Credit Loss Expense	(5)
Reclassified to asset held for sale	(2)
Balance at September 30, 2018	7
Contract Liabilities
Balance at January 1, 2018	42
Revenue recognized that was included in the deferred revenue balance at the beginning of the period	(74)
Increase due to cash received, excluding amount recognized as revenue during the period	75
Contract with Customer, Liability, Cumulative Catch-up Adjustment to Revenue, Modification of Contract	26
Reclassified to held for sale	(3)
Balance at September 30, 2018	$ 66

Revenues Revenues - Narrative (

Revenues Revenues - Narrative (Details)	9 Months Ended
	Sep. 30, 2018
Minimum
Disaggregation of Revenue [Line Items]
Product warranty period	1 year
Maximum
Disaggregation of Revenue [Line Items]
Product warranty period	5 years

Revenues - Expected to be Recog

Revenues - Expected to be Recognized in Future (Details) $ in Millions	Sep. 30, 2018USD ($)
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	$ 18
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	61
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	33
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	18
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	37
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: (nil)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total	167
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	14
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	61
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	33
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	18
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	37
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	163
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	4
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	0
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	$ 4

Business Combinations and Div_2

Business Combinations and Divestitures - Acquisitions (Details) - USD ($) $ in Millions	Mar. 26, 2018	Sep. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Goodwill		$ 2,632		$ 2,727
Other Current Assets		$ 334	$ 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	22
Property, plant, and equipment	25
Goodwill	27
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 Div_3

Business Combinations and Divestitures - Divestitures Narrative (Details) - Discontinued Operations, Disposed of by Sale - USD ($) $ in Millions	Mar. 28, 2018	Sep. 30, 2018
Conventional Continuous Sucker Rod Business
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
Sale of equity investment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Consideration		$ 12.5
Gain (Loss) on Disposition of Business		$ 3

Business Combinations and Div_4

Business Combinations and Divestitures - Held for Sale (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018	Sep. 30, 2017	Oct. 18, 2018	Jul. 11, 2018	Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Liabilities, Current	$ 49	$ 49				$ 0
Asset Impairment Charges	50	50
Impairment of Long-Lived Assets to be Disposed of		111	$ 0
Assets Held for Sale	618	618				359
Property, plant and equipment	2,157	2,157				$ 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	18
Discontinued Operations, Held-for-sale | Land Drilling Rigs
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets	484	484
Disposal Group, Including Discontinued Operation, Goodwill	60	60
Inventory	$ 74	$ 74
Discontinued Operations, Disposed of by Sale | Land Drilling Rigs
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Consideration					$ 287.5
Escrow Deposit Liability					$ 43
Subsequent Event | Discontinued Operations, Disposed of by Sale | Laboratory Service Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Consideration				$ 205

Restructuring and Transformat_3

Restructuring and Transformation Charges (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges	$ 27	$ 34	$ 90	$ 140
Asset Impairment Charges	50		50
Transformation Plan [Member]
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges	27		90
Transformation Plan [Member] | Other Restructuring
Restructuring Cost and Reserve [Line Items]
Other restructuring costs	21		44
Transformation Plan [Member] | Employee Severance
Restructuring Cost and Reserve [Line Items]
Severance costs	6		$ 46
Transformation Plan [Member] | Other Restructuring Less Asset Write-Offs [Member]
Restructuring Cost and Reserve [Line Items]
Other restructuring costs	$ 21
2016-17 Plan [Member]
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges		34		140
2016-17 Plan [Member] | Other Restructuring
Restructuring Cost and Reserve [Line Items]
Other restructuring costs		19		69
Asset Impairment Charges				12
2016-17 Plan [Member] | Employee Severance
Restructuring Cost and Reserve [Line Items]
Severance costs		15		71
2016-17 Plan [Member] | Other Restructuring excluding write-downs [Member]
Restructuring Cost and Reserve [Line Items]
Other restructuring costs		$ 19		$ 57

Restructuring and Transformat_4

Restructuring and Transformation Charges (Restructuring Charges) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges	$ 27	$ 34	$ 90	$ 140
2016-17 Plan [Member]
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges		34		140
2016-17 Plan [Member] | Western Hemisphere
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges		10		49
2016-17 Plan [Member] | Eastern Hemisphere
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges		22		62
2016-17 Plan [Member] | Corporate, Non-Segment
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges		2		29
2016-17 Plan [Member] | Employee Severance
Restructuring Cost and Reserve [Line Items]
Severance costs		15		71
2016-17 Plan [Member] | Employee Severance | Western Hemisphere
Restructuring Cost and Reserve [Line Items]
Severance costs		8		23
2016-17 Plan [Member] | Employee Severance | Eastern Hemisphere
Restructuring Cost and Reserve [Line Items]
Severance costs		6		24
2016-17 Plan [Member] | Employee Severance | Corporate, Non-Segment
Restructuring Cost and Reserve [Line Items]
Severance costs		1		24
2016-17 Plan [Member] | Other Restructuring
Restructuring Cost and Reserve [Line Items]
Other restructuring costs		19		69
2016-17 Plan [Member] | Other Restructuring | Western Hemisphere
Restructuring Cost and Reserve [Line Items]
Other restructuring costs		2		26
2016-17 Plan [Member] | Other Restructuring | Eastern Hemisphere
Restructuring Cost and Reserve [Line Items]
Other restructuring costs		16		38
2016-17 Plan [Member] | Other Restructuring | Corporate, Non-Segment
Restructuring Cost and Reserve [Line Items]
Other restructuring costs		$ 1		$ 5
Transformation Plan [Member]
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges	27		90
Transformation Plan [Member] | Western Hemisphere
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges	4		21
Transformation Plan [Member] | Eastern Hemisphere
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges	5		32
Transformation Plan [Member] | Corporate, Non-Segment
Restructuring Cost and Reserve [Line Items]
Severance, asset impairment and other restructuring charges	18		37
Transformation Plan [Member] | Employee Severance
Restructuring Cost and Reserve [Line Items]
Severance costs	6		46
Transformation Plan [Member] | Employee Severance | Western Hemisphere
Restructuring Cost and Reserve [Line Items]
Severance costs	2		17
Transformation Plan [Member] | Employee Severance | Eastern Hemisphere
Restructuring Cost and Reserve [Line Items]
Severance costs	2		20
Transformation Plan [Member] | Employee Severance | Corporate, Non-Segment
Restructuring Cost and Reserve [Line Items]
Severance costs	2		9
Transformation Plan [Member] | Other Restructuring
Restructuring Cost and Reserve [Line Items]
Other restructuring costs	21		44
Transformation Plan [Member] | Other Restructuring | Western Hemisphere
Restructuring Cost and Reserve [Line Items]
Other restructuring costs	2		4
Transformation Plan [Member] | Other Restructuring | Eastern Hemisphere
Restructuring Cost and Reserve [Line Items]
Other restructuring costs	3		12
Transformation Plan [Member] | Other Restructuring | Corporate, Non-Segment
Restructuring Cost and Reserve [Line Items]
Other restructuring costs	$ 16		$ 28

Restructuring and Transformat_5

Restructuring and Transformation Charges (Restructuring Liability) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2018USD ($)
Other Restructuring
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	$ 66
Other Restructuring | Eastern Hemisphere
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	20
Other Restructuring | Western Hemisphere
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	17
Other Restructuring | Corporate, Non-Segment
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	29
Severance and Other Restructuring Liabilities [Member]
Restructuring Reserve [Roll Forward]
Accrued balance at beginning of period	61
Restructuring Charges	90
Cash Payments	(75)
Other	(10)
Accrued balance at end of period	66
Transformation Plan [Member] | Employee Severance
Restructuring Reserve [Roll Forward]
Accrued balance at beginning of period	0
Restructuring Charges	46
Cash Payments	(27)
Other	(4)
Accrued balance at end of period	15
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	6
Transformation Plan [Member] | Employee Severance | Corporate, Non-Segment
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	7
Transformation Plan [Member] | Other Restructuring
Restructuring Reserve [Roll Forward]
Accrued balance at beginning of period	0
Restructuring Charges	44
Cash Payments	(22)
Other	(4)
Accrued balance at end of period	18
Transformation Plan [Member] | Other Restructuring | Eastern Hemisphere
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	1
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
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	17
2016-17 and Prior Plan [Member] | Employee Severance
Restructuring Reserve [Roll Forward]
Accrued balance at beginning of period	21
Restructuring Charges	0
Cash Payments	(12)
Other	0
Accrued balance at end of period	9
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
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	5
2016-17 and Prior Plan [Member] | Other Restructuring
Restructuring Reserve [Roll Forward]
Accrued balance at beginning of period	40
Restructuring Charges	0
Cash Payments	(14)
Other	(2)
Accrued balance at end of period	24
2016-17 and Prior Plan [Member] | Other Restructuring | Eastern Hemisphere
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	15
2016-17 and Prior Plan [Member] | Other Restructuring | Western Hemisphere
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	9
2016-17 and Prior Plan [Member] | Other Restructuring | Corporate, Non-Segment
Restructuring Reserve [Roll Forward]
Accrued balance at end of period	$ 0

Accounts Receivable Factoring_2

Accounts Receivable Factoring and Other Receivables (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Sep. 30, 2018	Sep. 30, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Proceeds from Sale of Notes Receivable	$ 59
Proceeds from sale of accounts receivable			$ 278
Gain (loss) on sale of accounts receivable			(2)	$ (1)
Accounts receivable sold, carrying value			$ 284	$ 150
Trade receivables held-for-sale, reconciliation to cash flow, deductions from held-for-sale		$ 65
Receivable with imputed interest, face amount		$ 65
Receivable with imputed interest, term		3 years
Receivable with imputed interest, effective yield (interest rate)		4.625%
Notes receivable, fair value disclosure		$ 58

Inventories, Net (Schedule of I

Inventories, Net (Schedule of Inventory) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Raw materials, components and supplies	$ 146	$ 144
Work in process	57	47
Finished goods	894	1,043
Inventories, Net	$ 1,097	$ 1,234

Asset Impairments and Write-D_2

Asset Impairments and Write-Downs - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018	Sep. 30, 2017
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment of Long-Lived Assets to be Disposed of		$ 111	$ 0
Asset Impairment Charges	$ 50	50
Impairment Charge on Reclassified Assets		10
Land Drilling Rigs
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment of Long-Lived Assets to be Disposed of		101
Eastern Hemisphere
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment of Long-Lived Assets to be Disposed of	19	67
Asset Impairment Charges	$ 50
Impairment Charge on Reclassified Assets		7
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

Goodwill (Schedule of Goodwill)

Goodwill (Schedule of Goodwill) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2018USD ($)
Goodwill [Line Items]
Goodwill, Acquired During Period	$ 27
Goodwill, Written off Related to Sale of Business Unit	8
Goodwill, Reclassification to Assets Held for Sale	60
Goodwill [Roll Forward]
Balance at December 31, 2017	2,727
Foreign currency translation adjustments	(54)
Balance at September 30, 2018	2,632
Western Hemisphere
Goodwill [Line Items]
Goodwill, Written off Related to Sale of Business Unit	8
Goodwill, Reclassification to Assets Held for Sale	44
Goodwill [Roll Forward]
Balance at December 31, 2017	1,958
Foreign currency translation adjustments	(35)
Eastern Hemisphere
Goodwill [Line Items]
Goodwill, Acquired During Period	27
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	(19)
Balance at September 30, 2018	761
Western Hemisphere
Goodwill [Line Items]
Goodwill, Acquired During Period	0
Goodwill [Roll Forward]
Balance at September 30, 2018	$ 1,871

Short-term Borrowings and Oth_3

Short-term Borrowings and Other Debt Obligations (Schedule of Short-term Debt) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
364 Day Secured RCF [Member]
Short-term Debt [Line Items]
Short-term debt	$ 317
Revolving Credit Facility
Short-term Debt [Line Items]
Short-term debt	0	$ 0
Other short-term bank loans
Short-term Debt [Line Items]
Short-term debt	18	11
Current Portion of Long-term Debt	$ 61	$ 137

Short-term Borrowings and Oth_4

Short-term Borrowings and Other Debt Obligations (Narrative) (Details)	Feb. 28, 2018USD ($)	Dec. 31, 2018USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2017USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2017USD ($)	Mar. 31, 2018
Short-term Debt [Line Items]
Credit agreement, maximum capacity			$ 1,238,000,000		$ 1,238,000,000
Remaining borrowing capacity			378,000,000		$ 378,000,000
Line of Credit Facility, Collateral					93
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
Debt Instrument, Covenant, Initial Current Asset Coverage Ratio					1.5
Debt Instrument, Covenant, Secondary Current Asset Coverage Ratio					2.1
Bond Tender and Call Premium			0	$ 0	$ (34,000,000)	$ 0
Borrowings of Long-term Debt					586,000,000	250,000,000
Performance bonds			9,000,000		9,000,000
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities					471,000,000	$ 53,000,000
364 Day Secured RCF [Member]
Short-term Debt [Line Items]
Short-term debt			317,000,000		317,000,000
Revolving Credit Facility
Short-term Debt [Line Items]
Short-term debt			583,000,000		583,000,000
Committed letters of credit
Short-term Debt [Line Items]
Letters of Credit Outstanding, Amount			326,000,000		326,000,000
Domestic and foreign facility
Short-term Debt [Line Items]
Short term borrowings			18,000,000		18,000,000
Committed Letters of Credit [Member]
Short-term Debt [Line Items]
Letters of Credit Outstanding, Amount			205,000,000		205,000,000
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			338,000,000		338,000,000
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%
Extending Lenders | Amended Credit Agreement [Member]
Short-term Debt [Line Items]
Credit agreement, maximum capacity			357,000,000		357,000,000
Nonextending Lenders [Member] | Amended Credit Agreement [Member]
Short-term Debt [Line Items]
Credit agreement, maximum capacity			$ 226,000,000		$ 226,000,000
London Interbank Offered Rate (LIBOR) | Term Loan Agreement
Short-term Debt [Line Items]
Basis spread on variable rate (as a percent)			2.30%
London Interbank Offered Rate (LIBOR) | 364-day credit agreement [Member]
Short-term Debt [Line Items]
Basis spread on variable rate (as a percent)			3.05%
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)			3.55%
London Interbank Offered Rate (LIBOR) | Nonextending Lenders [Member] | Minimum | A&R Credit Agreement
Short-term Debt [Line Items]
Basis spread on variable rate (as a percent)			2.80%
Forecast
Short-term Debt [Line Items]
Line of Credit Facility Reduction in Borrowing Capacity		$ 54,000,000

Short-term Borrowings and Oth_5

Short-term Borrowings and Other Debt Obligations Schedule of Borrowing Availability (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Line of Credit Facility [Line Items]
Credit agreement, maximum capacity	$ 1,238
Revolving Credit Facility
Line of Credit Facility [Line Items]
Short-term debt	0	$ 0
364 Day Secured RCF [Member]
Line of Credit Facility [Line Items]
Short-term debt	317
Committed Letters of Credit [Member]
Line of Credit Facility [Line Items]
Letters of Credit Outstanding, Amount	205
Term Loan Borrowings before Debt Issuance Cost [Member]
Line of Credit Facility [Line Items]
Debt and Capital Lease Obligations	$ 338

Fair Value of Financial Instr_3

Fair Value of Financial Instruments (Details) - Senior Notes - Level 2 - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long-term debt	$ 6,710	$ 7,060
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long-term debt	$ 7,276	$ 7,218

Derivative Instruments (Narrati

Derivative Instruments (Narrative) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2018	Sep. 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	$ 3			$ 3		$ 70
Fair Value Adjustment of Warrants	(11)	$ 7		(67)	$ (58)
Foreign currency forward contracts
Derivative [Line Items]
Notional amount	488			488		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	$ (5)	$ 2		$ (5)	$ (20)
Capital in Excess of Par Value
Derivative [Line Items]
Stock issued during period, shares, new issues			84.5

Derivative Instruments (Schedul

Derivative Instruments (Schedule of Derivatives - Balance Sheet) (Details) - Not Designated as Hedging Instrument - USD ($) $ in Millions	Sep. 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	(2)	(4)
Warrant | Other Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability, fair value, gross	$ (3)	$ (70)

Derivative Instruments (Sched_2

Derivative Instruments (Schedule of Derivatives - Income Statement) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Warrant Fair Value Adjustment	$ (11)	$ 7	$ (67)	$ (58)
Foreign currency forward contracts | Other, Net | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative	$ (5)	$ 2	$ (5)	$ (20)

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2019
(Provision) Benefit for Income Taxes	$ (22)	$ (25)	$ (80)	$ (75)
Loss Before Income Taxes	$ (172)	$ (226)	$ (615)	$ (784)
Forecast
Uncertain tax positions, estimated for next twelve months					$ 19

Shareholders' Equity (Sharehold

Shareholders' Equity (Shareholders' Equity Activity) (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Schedule of Issued and Treasury Shares [Line Items]
Capital in Excess of Par Value	$ 6,702			$ 6,702		$ 6,655
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning balance				(571)	$ 2,068
Net Income (Loss)	(194)	$ (251)		(695)	(859)
Other Comprehensive Income	(9)	88		(169)	121
Dividends Paid to Noncontrolling Interests				(13)	(16)
Equity Awards Granted, Vested and Exercised				43	70
Balance, ending balance	(1,508)	1,384	$ 2,068	(1,508)	1,384
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				43	70
Balance, ending balance	6,702	6,641	$ 6,571	6,702	6,641
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)				(708)	(875)
Equity Awards Granted, Vested and Exercised				0	0
Balance, ending balance	(6,568)	(3,825)	$ (2,950)	(6,568)	(3,825)
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				(169)	121
Equity Awards Granted, Vested and Exercised				0	0
Balance, ending balance	(1,688)	(1,489)	(1,610)	(1,688)	(1,489)
Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning balance				55	56
Net Income (Loss)				13	16
Dividends Paid to Noncontrolling Interests				(13)	(16)
Equity Awards Granted, Vested and Exercised				0	0
Balance, ending balance	$ 45	$ 56	$ 56	45	$ 56
Stockholders' Equity, Other				$ (10)

Shareholders' Equity (Changes i

Shareholders' Equity (Changes in Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance			$ (1,519)	$ (1,610)
Other Comprehensive Income before Reclassifications			(170)	165
Reclassifications			1	(44)
Other Comprehensive Income (Loss)	$ (9)	$ 88	(169)	121
Ending balance	(1,688)	(1,489)	(1,688)	(1,489)
Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance			(1,484)	(1,614)
Other Comprehensive Income before Reclassifications			(170)	165
Reclassifications			0	0
Other Comprehensive Income (Loss)			(170)	165
Ending balance	(1,654)	(1,449)	(1,654)	(1,449)
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	(44)
Other Comprehensive Income (Loss)			1	(44)
Ending balance	(25)	(31)	(25)	(31)
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)

Earnings per Share (Weighted Av

Earnings per Share (Weighted Average Shares Outstanding) (Details) - shares shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share [Abstract]
Weighted Average Number of Shares Outstanding, Basic and Diluted	998	990	996	989

Earnings per Share (Antidilutiv

Earnings per Share (Antidilutive Shares) (Details) - shares shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share [Abstract]
Anti-dilutive potential shares due to net loss	251	250	251	250

Share-Based Compensation (Sched

Share-Based Compensation (Schedule of Share-based Compensation Expense) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-based compensation	$ 11	$ 14	$ 38	$ 55
Related tax benefit	$ 0	$ 0	$ 0	$ 0

Share-Based Compensation (Narra

Share-Based Compensation (Narrative) (Details) $ / shares in Units, shares in Millions, $ in Millions	9 Months Ended
	Sep. 30, 2018USD ($)$ / sharesshares
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	$ 3.85
Fair value, risk-free rate	2.28%
Fair value, volatility rate	63.00%
Fair value, dividend yield	0.00%
Unrecognized compensation expense | $	$ 12
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	$ 5.29
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) | shares	4.4
Weighted-average grant date fair value (in dollars per share) | $ / shares	$ 3.53
Unrecognized compensation expense | $	$ 39
Unrecognized compensation expense, recognition period	2 years

Segment Information (Details)

Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Revenues	$ 1,444	$ 1,460	$ 4,315	$ 4,209
Operating Income (Loss)	(13)	(70)	(125)	(429)
Depreciation and Amortization	128	199	419	611
Corporate General and Administrative	(31)	(42)	(106)	(117)
Restructuring Charges	(27)	(34)	(90)	(140)
Operating Segments
Segment Reporting Information [Line Items]
Revenues	1,444	1,460	4,315	4,209
Operating Income (Loss)	116	(7)	225	(169)
Depreciation and Amortization	127	197	413	606
Operating Segments | Western Hemisphere
Segment Reporting Information [Line Items]
Revenues	762	767	2,287	2,178
Operating Income (Loss)	78	3	152	(78)
Depreciation and Amortization	46	89	162	272
Operating Segments | Eastern Hemisphere
Segment Reporting Information [Line Items]
Revenues	682	693	2,028	2,031
Operating Income (Loss)	38	(10)	73	(91)
Depreciation and Amortization	81	108	251	334
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Depreciation and Amortization	1	2	6	5
Corporate General and Administrative	(31)	(28)	(101)	(94)
Segment Reconciling Items
Segment Reporting Information [Line Items]
Restructuring Charges	(27)	(34)	(90)	140
Impairment of Long-Lived Assets and Other Related Charges	$ (71)	$ (1)	$ (159)	$ (26)

Segment Information (Narrative)

Segment Information (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Severance, asset impairment and other restructuring charges	$ 27	$ 34	$ 90	$ 140
Asset Impairment Charges	$ 50		$ 50
2016-17 Plan [Member]
Segment Reporting Information [Line Items]
Severance, asset impairment and other restructuring charges		34		140
2016-17 Plan [Member] | Corporate, Non-Segment
Segment Reporting Information [Line Items]
Severance, asset impairment and other restructuring charges		$ 2		$ 29

Disputes, Litigation and Cont_2

Disputes, Litigation and Contingencies (Details) $ in Millions	Jul. 31, 2015patent	Dec. 31, 2010lawsuit	Sep. 30, 2018USD ($)	Dec. 31, 2017USD ($)
Loss Contingencies [Line Items]
Loss Contingency, Patents Allegedly Infringed, Number | patent	7
Estimated litigation liability			$ 32	$ 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

Condensed Consolidating Finan_3

Condensed Consolidating Financial Statements (Narrative) (Details) - Senior Notes	Sep. 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 Finan_4

Condensed Consolidating Financial Statements (Condensed Consolidating Statement of Operations) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Condensed Income Statements, Captions [Line Items]
Revenues	$ 1,444	$ 1,460	$ 4,315	$ 4,209
Costs and Expenses	(1,457)	(1,530)	(4,440)	(4,638)
Operating Income (Loss)	(13)	(70)	(125)	(429)
Other Income (Expense):
Interest Expense, Net	(156)	(148)	(457)	(427)
Intercompany Charges, Net	0	0	0	0
Income (Loss) from Subsidiary	0	0	0	0
Other Nonoperating Income (Expense), Including Foreign Currency Devaluation	(3)	(8)	(33)	72
Loss Before Income Taxes	(172)	(226)	(615)	(784)
(Provision) Benefit for Income Taxes	(22)	(25)	(80)	(75)
Net Loss	(194)	(251)	(695)	(859)
Noncontrolling Interests	5	5	13	16
Net Income (Loss) Attributable to Weatherford	(199)	(256)	(708)	(875)
Comprehensive Income (Loss) Attributable to Weatherford	(208)	(168)	(877)	(754)
Other Subsidiaries
Condensed Income Statements, Captions [Line Items]
Revenues	1,444	1,460	4,315	4,209
Costs and Expenses	(1,455)	(1,534)	(4,435)	(4,674)
Operating Income (Loss)	(11)	(74)	(120)	(465)
Other Income (Expense):
Interest Expense, Net	5	6	14	21
Intercompany Charges, Net	(118)	60	(793)	189
Income (Loss) from Subsidiary	0	0	0	0
Other Nonoperating Income (Expense), Including Foreign Currency Devaluation	(55)	54	(240)	40
Loss Before Income Taxes	(179)	46	(1,139)	(215)
(Provision) Benefit for Income Taxes	(22)	(25)	(80)	75
Net Loss	(201)	21	(1,219)	(290)
Noncontrolling Interests	5	5	13	16
Net Income (Loss) Attributable to Weatherford	(206)	16	(1,232)	(306)
Comprehensive Income (Loss) Attributable to Weatherford	(214)	104	(1,401)	(184)
Weatherford Ireland
Condensed Income Statements, Captions [Line Items]
Revenues	0	0	0	0
Costs and Expenses	(2)	(3)	(5)	(11)
Operating Income (Loss)	(2)	(3)	(5)	(11)
Other Income (Expense):
Interest Expense, Net	0	0	0	0
Intercompany Charges, Net	6	(2)	(9)	(2)
Income (Loss) from Subsidiary	(214)	(244)	(761)	(924)
Other Nonoperating Income (Expense), Including Foreign Currency Devaluation	11	(7)	67	58
Loss Before Income Taxes	(199)	(256)	(708)	(875)
(Provision) Benefit for Income Taxes	0	0	0	0
Net Loss	(199)	(256)	(708)	(875)
Noncontrolling Interests	0	0	0	0
Net Income (Loss) Attributable to Weatherford	(199)	(256)	(708)	(875)
Comprehensive Income (Loss) Attributable to Weatherford	(208)	(168)	(877)	(754)
Weatherford Bermuda
Condensed Income Statements, Captions [Line Items]
Revenues	0	0	0	0
Costs and Expenses	0	6	0	45
Operating Income (Loss)	0	6	0	45
Other Income (Expense):
Interest Expense, Net	(141)	(149)	(422)	(432)
Intercompany Charges, Net	113	1	115	89
Income (Loss) from Subsidiary	93	(518)	(229)	(650)
Other Nonoperating Income (Expense), Including Foreign Currency Devaluation	42	(54)	142	(23)
Loss Before Income Taxes	107	(714)	(394)	(1,149)
(Provision) Benefit for Income Taxes	0	0	0	0
Net Loss	107	(714)	(394)	(1,149)
Noncontrolling Interests	0	0	0	0
Net Income (Loss) Attributable to Weatherford	107	(714)	(394)	(1,149)
Comprehensive Income (Loss) Attributable to Weatherford	91	(687)	(436)	(1,153)
Weatherford Delaware
Condensed Income Statements, Captions [Line Items]
Revenues	0	0	0	0
Costs and Expenses	0	1	0	2
Operating Income (Loss)	0	1	0	2
Other Income (Expense):
Interest Expense, Net	(26)	(10)	(65)	(30)
Intercompany Charges, Net	(7)	(59)	(36)	102
Income (Loss) from Subsidiary	8	(445)	(148)	(265)
Other Nonoperating Income (Expense), Including Foreign Currency Devaluation	46	(53)	179	(1)
Loss Before Income Taxes	21	(566)	(70)	(396)
(Provision) Benefit for Income Taxes	0	0	0	0
Net Loss	21	(566)	(70)	(396)
Noncontrolling Interests	0	0	0	0
Net Income (Loss) Attributable to Weatherford	21	(566)	(70)	(396)
Comprehensive Income (Loss) Attributable to Weatherford	16	(538)	(41)	(436)
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	6	5	16	14
Intercompany Charges, Net	(6)	0	(723)	0
Income (Loss) from Subsidiary	113	1,207	1,138	1,839
Other Nonoperating Income (Expense), Including Foreign Currency Devaluation	(47)	52	(181)	(2)
Loss Before Income Taxes	78	1,264	1,696	1,851
(Provision) Benefit for Income Taxes	0	0	0	0
Net Loss	78	1,264	1,696	1,851
Noncontrolling Interests	0	0	0	0
Net Income (Loss) Attributable to Weatherford	78	1,264	1,696	1,851
Comprehensive Income (Loss) Attributable to Weatherford	$ 107	$ 1,121	$ 1,878	$ 1,773

Condensed Consolidating Finan_5

Condensed Consolidating Financial Statements (Condensed Consolidating Balance Sheet) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Current Assets
Cash and Cash Equivalents	$ 393	$ 613	$ 445	$ 1,037
Other Current Assets	3,337	3,265
Total Current Assets	3,730	3,878
Equity Investments in Affiliates	0	0
Intercompany Receivables, Net	0	0
Other Assets	5,108	5,869
Total Assets	8,838	9,747
Current Liabilities
Short-term Borrowings and Current Portion of Long-Term Debt	396	148
Accounts Payable and Other Current Liabilities	1,903	2,082
Total Current Liabilities	2,299	2,230
Long-term Debt	7,626	7,541
Intercompany Payables, Net	0	0
Other Long-term Liabilities	421	547
Total Liabilities	10,346	10,318
Weatherford Shareholders’ Equity	(1,553)	(626)
Noncontrolling Interests	45	55
Total Liabilities and Shareholders’ Deficiency	8,838	9,747
Other Subsidiaries
Current Assets
Cash and Cash Equivalents	327	418	388	447
Other Current Assets	3,372	3,298
Total Current Assets	3,699	3,716
Equity Investments in Affiliates	400	530
Intercompany Receivables, Net	2,569	4,213
Other Assets	5,090	5,857
Total Assets	11,758	14,316
Current Liabilities
Short-term Borrowings and Current Portion of Long-Term Debt	19	20
Accounts Payable and Other Current Liabilities	2,272	2,439
Total Current Liabilities	2,291	2,459
Long-term Debt	140	159
Intercompany Payables, Net	0	0
Other Long-term Liabilities	421	332
Total Liabilities	2,852	2,950
Weatherford Shareholders’ Equity	8,861	11,311
Noncontrolling Interests	45	55
Total Liabilities and Shareholders’ Deficiency	11,758	14,316
Weatherford Ireland
Current Assets
Cash and Cash Equivalents	0	0	0	0
Other Current Assets	1	1
Total Current Assets	1	1
Equity Investments in Affiliates	(1,562)	(460)
Intercompany Receivables, Net	14	0
Other Assets	0	0
Total Assets	(1,547)	(459)
Current Liabilities
Short-term Borrowings and Current Portion of Long-Term Debt	0	0
Accounts Payable and Other Current Liabilities	6	10
Total Current Liabilities	6	10
Long-term Debt	0	0
Intercompany Payables, Net	0	87
Other Long-term Liabilities	0	70
Total Liabilities	6	167
Weatherford Shareholders’ Equity	(1,553)	(626)
Noncontrolling Interests	0	0
Total Liabilities and Shareholders’ Deficiency	(1,547)	(459)
Weatherford Bermuda
Current Assets
Cash and Cash Equivalents	66	195	57	586
Other Current Assets	0	0
Total Current Assets	66	195
Equity Investments in Affiliates	8,003	7,998
Intercompany Receivables, Net	384	0
Other Assets	49	8
Total Assets	8,502	8,201
Current Liabilities
Short-term Borrowings and Current Portion of Long-Term Debt	377	128
Accounts Payable and Other Current Liabilities	137	183
Total Current Liabilities	514	311
Long-term Debt	6,645	7,127
Intercompany Payables, Net	0	242
Other Long-term Liabilities	0	146
Total Liabilities	7,159	7,826
Weatherford Shareholders’ Equity	1,343	375
Noncontrolling Interests	0	0
Total Liabilities and Shareholders’ Deficiency	8,502	8,201
Weatherford Delaware
Current Assets
Cash and Cash Equivalents	0	0	0	4
Other Current Assets	477	516
Total Current Assets	477	516
Equity Investments in Affiliates	7,882	8,009
Intercompany Receivables, Net	0	0
Other Assets	47	4
Total Assets	8,406	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	768	166
Intercompany Payables, Net	2,967	3,884
Other Long-term Liabilities	0	136
Total Liabilities	3,735	4,186
Weatherford Shareholders’ Equity	4,671	4,343
Noncontrolling Interests	0	0
Total Liabilities and Shareholders’ Deficiency	8,406	8,529
Eliminations
Current Assets
Cash and Cash Equivalents	0	0	$ 0	$ 0
Other Current Assets	(513)	(550)
Total Current Assets	(513)	(550)
Equity Investments in Affiliates	(14,723)	(16,077)
Intercompany Receivables, Net	(2,967)	(4,213)
Other Assets	(78)	0
Total Assets	(18,281)	(20,840)
Current Liabilities
Short-term Borrowings and Current Portion of Long-Term Debt	0	0
Accounts Payable and Other Current Liabilities	(512)	(550)
Total Current Liabilities	(512)	(550)
Long-term Debt	73	89
Intercompany Payables, Net	(2,967)	(4,213)
Other Long-term Liabilities	0	(137)
Total Liabilities	(3,406)	(4,811)
Weatherford Shareholders’ Equity	(14,875)	(16,029)
Noncontrolling Interests	0	0
Total Liabilities and Shareholders’ Deficiency	$ (18,281)	$ (20,840)

Condensed Consolidating Finan_6

Condensed Consolidating Financial Statements (Condensed Consolidating Statement of Cash Flows) (Details) - USD ($)	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2018	Sep. 30, 2018	Sep. 30, 2017
Condensed Cash Flow Statements, Captions [Line Items]
Net Income (Loss)	$ (194,000,000)	$ (251,000,000)		$ (695,000,000)	$ (859,000,000)
Cash Flows from Operating Activities:
Charges from Parent or Subsidiary				0	0
Equity in (Earnings) Loss of Affiliates				0	0
Deferred Income Tax Benefit				(1,000,000)	(7,000,000)
Other Adjustments				349,000,000	382,000,000
Net Cash Used in Operating Activities				(347,000,000)	(484,000,000)
Cash Flows From Investing Activities:
Capital Expenditures for Property, Plant and Equipment				(111,000,000)	(147,000,000)
Payments to Acquire Businesses, Net of Cash Acquired				4,000,000	(7,000,000)
Capital Expenditures for and Acquisition of Assets Held for Sale				(30,000,000)	(244,000,000)
Acquisition of Intellectual Property				(11,000,000)	(13,000,000)
Proceeds from Sale of Assets				70,000,000	36,000,000
Proceeds (Payments) from Sale of Businesses and Equity Investment, Net				37,000,000	(1,000,000)
Payments for (Proceeds from) Other Investing Activities				0	(25,000,000)
Net Cash Used in Investing Activities				(41,000,000)	(401,000,000)
Cash Flows From Financing Activities:
Borrowings of Short-term Debt, Net				170,000,000	118,000,000
Borrowings (Repayments) Long-term Debt, Net				115,000,000	197,000,000
Borrowings (Repayments) Between Subsidiaries, Net				0	0
Other, Net				(62,000,000)	(28,000,000)
Net Cash Provided by Financing Activities				223,000,000	287,000,000
Effect of Exchange Rate Changes on Cash and Cash Equivalents				(55,000,000)	6,000,000
Net Decrease in Cash and Cash Equivalents				(220,000,000)	(592,000,000)
Cash and Cash Equivalents at Beginning of Period			$ 613,000,000	613,000,000	1,037,000,000
Cash and Cash Equivalents at End of Period	393,000,000	445,000,000		393,000,000	445,000,000
Other Subsidiaries
Condensed Cash Flow Statements, Captions [Line Items]
Net Income (Loss)	(201,000,000)	21,000,000		(1,219,000,000)	(290,000,000)
Cash Flows from Operating Activities:
Charges from Parent or Subsidiary				793,000,000	(189,000,000)
Equity in (Earnings) Loss of Affiliates				0	0
Deferred Income Tax Benefit				(1,000,000)	(7,000,000)
Other Adjustments				1,029,000,000	230,000,000
Net Cash Used in Operating Activities				602,000,000	(256,000,000)
Cash Flows From Investing Activities:
Capital Expenditures for Property, Plant and Equipment				(111,000,000)	(147,000,000)
Payments to Acquire Businesses, Net of Cash Acquired				4,000,000	(7,000,000)
Capital Expenditures for and Acquisition of Assets Held for Sale				(30,000,000)	(244,000,000)
Acquisition of Intellectual Property				(11,000,000)	(13,000,000)
Proceeds from Sale of Assets				70,000,000	36,000,000
Proceeds (Payments) from Sale of Businesses and Equity Investment, Net				37,000,000	(1,000,000)
Payments for (Proceeds from) Other Investing Activities					(25,000,000)
Net Cash Used in Investing Activities				(41,000,000)	(401,000,000)
Cash Flows From Financing Activities:
Borrowings of Short-term Debt, Net				(22,000,000)	(107,000,000)
Borrowings (Repayments) Long-term Debt, Net				(8,000,000)	79,000,000
Borrowings (Repayments) Between Subsidiaries, Net				(505,000,000)	648,000,000
Other, Net				(62,000,000)	(28,000,000)
Net Cash Provided by Financing Activities				(597,000,000)	592,000,000
Effect of Exchange Rate Changes on Cash and Cash Equivalents				(55,000,000)	6,000,000
Net Decrease in Cash and Cash Equivalents				(91,000,000)	(59,000,000)
Cash and Cash Equivalents at Beginning of Period			418,000,000	418,000,000	447,000,000
Cash and Cash Equivalents at End of Period	327,000,000	388,000,000		327,000,000	388,000,000
Weatherford Ireland
Condensed Cash Flow Statements, Captions [Line Items]
Proceeds from Sale of Productive Assets				0
Net Income (Loss)	(199,000,000)	(256,000,000)		(708,000,000)	(875,000,000)
Cash Flows from Operating Activities:
Charges from Parent or Subsidiary				9,000,000	(2,000,000)
Equity in (Earnings) Loss of Affiliates				761,000,000	924,000,000
Deferred Income Tax Benefit				0	0
Other Adjustments				74,000,000	(129,000,000)
Net Cash Used in Operating Activities				136,000,000	(82,000,000)
Cash Flows From Investing Activities:
Capital Expenditures for Property, Plant and Equipment					0
Payments to Acquire Businesses, Net of Cash Acquired					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 of Short-term Debt, Net				0	0
Borrowings (Repayments) Long-term Debt, Net				0	0
Borrowings (Repayments) Between Subsidiaries, Net				(136,000,000)	82,000,000
Other, Net				0	0
Net Cash Provided by Financing Activities				(136,000,000)	82,000,000
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	0
Cash and Cash Equivalents at End of Period	0	0		0	0
Weatherford Bermuda
Condensed Cash Flow Statements, Captions [Line Items]
Proceeds from Sale of Productive Assets				0
Net Income (Loss)	107,000,000	(714,000,000)		(394,000,000)	(1,149,000,000)
Cash Flows from Operating Activities:
Charges from Parent or Subsidiary				(115,000,000)	89,000,000
Equity in (Earnings) Loss of Affiliates				229,000,000	650,000,000
Deferred Income Tax Benefit				0	0
Other Adjustments				566,000,000	241,000,000
Net Cash Used in Operating Activities				286,000,000	(169,000,000)
Cash Flows From Investing Activities:
Capital Expenditures for Property, Plant and Equipment			0		0
Payments to Acquire Businesses, Net of Cash Acquired					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 of Short-term Debt, Net				192,000,000	225,000,000
Borrowings (Repayments) Long-term Debt, Net				(464,000,000)	212,000,000
Borrowings (Repayments) Between Subsidiaries, Net				(143,000,000)	(797,000,000)
Other, Net				0	0
Net Cash Provided by Financing Activities				(415,000,000)	(360,000,000)
Effect of Exchange Rate Changes on Cash and Cash Equivalents				0	0
Net Decrease in Cash and Cash Equivalents				(129,000,000)	(529,000,000)
Cash and Cash Equivalents at Beginning of Period			195,000,000	195,000,000	586,000,000
Cash and Cash Equivalents at End of Period	66,000,000	57,000,000		66,000,000	57,000,000
Weatherford Delaware
Condensed Cash Flow Statements, Captions [Line Items]
Proceeds from Sale of Productive Assets				0
Net Income (Loss)	21,000,000	(566,000,000)		(70,000,000)	(396,000,000)
Cash Flows from Operating Activities:
Charges from Parent or Subsidiary				36,000,000	102,000,000
Equity in (Earnings) Loss of Affiliates				148,000,000	265,000,000
Deferred Income Tax Benefit				0	0
Other Adjustments				(1,485,000,000)	52,000,000
Net Cash Used in Operating Activities				(1,371,000,000)	23,000,000
Cash Flows From Investing Activities:
Capital Expenditures for Property, Plant and Equipment			0		0
Payments to Acquire Businesses, Net of Cash Acquired					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 of Short-term Debt, Net				0	0
Borrowings (Repayments) Long-term Debt, Net				587,000,000	(94,000,000)
Borrowings (Repayments) Between Subsidiaries, Net				784,000,000	67,000,000
Other, Net				0	0
Net Cash Provided by Financing Activities				1,371,000,000	(27,000,000)
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	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)	78,000,000	1,264,000,000		1,696,000,000	1,851,000,000
Cash Flows from Operating Activities:
Charges from Parent or Subsidiary				(723,000,000)	0
Equity in (Earnings) Loss of Affiliates				(1,138,000,000)	(1,839,000,000)
Deferred Income Tax Benefit					0
Other Adjustments				165,000,000	(12,000,000)
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	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 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	0
Cash and Cash Equivalents at End of Period	$ 0	$ 0		$ 0	$ 0

Subsequent Event (Details)

Subsequent Event (Details) - Discontinued Operations, Disposed of by Sale - USD ($) $ in Millions	Oct. 31, 2018	Oct. 18, 2018	Jul. 11, 2018
Land Drilling Rigs
Subsequent Event [Line Items]
Disposal Group, Including Discontinued Operation, Consideration			$ 287.5
Escrow Deposit Liability			$ 43
Subsequent Event | Laboratory Service Business
Subsequent Event [Line Items]
Disposal Group, Including Discontinued Operation, Consideration		$ 205
Subsequent Event | Land Drilling Rigs
Subsequent Event [Line Items]
Proceeds from Divestiture of Businesses	$ 123