Condensed Consolidating Financial Statements (Condensed Consolidating Statement of Cash Flows) (Details) - USD ($) | 3 Months Ended | 6 Months Ended | |
Jun. 30, 2019 | Mar. 31, 2019 | Jun. 30, 2018 | Mar. 31, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2018 |
Condensed Cash Flow Statements, Captions [Line Items] | | | | | | | |
Intercompany Receivables, Net | $ 0 | | | | $ 0 | | $ 0 |
Equity Investments in Affiliates | 0 | | | | 0 | | 0 |
Long-term Debt | 7,366,000,000 | | | | 7,366,000,000 | | 7,605,000,000 |
Net Income (Loss) | (312,000,000) | $ (477,000,000) | $ (259,000,000) | $ (242,000,000) | (789,000,000) | $ (501,000,000) | |
Cash Flows from Operating Activities: | | | | | | | |
Charges from Parent or Subsidiary | | | | | 0 | 0 | |
Equity in (Earnings) Loss of Affiliates | | | | | 0 | 0 | |
Other Adjustments | | | | | 311,000,000 | 186,000,000 | |
Net Cash Used in Operating Activities | | | | | (478,000,000) | (315,000,000) | |
Cash Flows From Investing Activities: | | | | | | | |
Capital Expenditures for Property, Plant and Equipment | | | | | (114,000,000) | (86,000,000) | |
Payments to Acquire Businesses, Net of Cash Acquired | | | | | 0 | (4,000,000) | |
Acquisition of Intellectual Property | | | | | (9,000,000) | (7,000,000) | |
Proceeds from Sale of Assets | | | | | 45,000,000 | 50,000,000 | |
Proceeds from Divestiture of Businesses | | | | | 301,000,000 | 25,000,000 | |
Net Cash Provided by (Used in) Investing Activities | | | | | 223,000,000 | (14,000,000) | |
Cash Flows From Financing Activities: | | | | | | | |
Borrowings of Short-term Debt, Net | | | | | 298,000,000 | 87,000,000 | |
Borrowings (Repayments) Long-term Debt, Net | | | | | (17,000,000) | 133,000,000 | |
Borrowings (Repayments) Between Subsidiaries, Net | | | | | 0 | 0 | |
Other, Net | | | | | (12,000,000) | (48,000,000) | |
Net Cash Provided by Financing Activities | | | | | 269,000,000 | 172,000,000 | |
Effect of Exchange Rate Changes on Cash and Cash Equivalents | | | | | 2,000,000 | (41,000,000) | |
Net Increase (Decrease) in Cash and Cash Equivalents | | | | | 16,000,000 | (198,000,000) | |
Cash and Cash Equivalents at Beginning of Period | | 602,000,000 | | 613,000,000 | 602,000,000 | 613,000,000 | |
Cash and Cash Equivalents at End of Period | 618,000,000 | | 415,000,000 | | 618,000,000 | 415,000,000 | |
Intercompany Payables, Net | 0 | | | | 0 | | 0 |
Other Non-Current Liabilities | 515,000,000 | | | | 515,000,000 | | 362,000,000 |
Other Assets | 2,975,000,000 | | | | 2,975,000,000 | | 3,151,000,000 |
Other Subsidiaries | | | | | | | |
Condensed Cash Flow Statements, Captions [Line Items] | | | | | | | |
Net Income (Loss) | (64,000,000) | | (198,000,000) | | | (1,018,000,000) | |
Weatherford Ireland | | | | | | | |
Condensed Cash Flow Statements, Captions [Line Items] | | | | | | | |
Net Income (Loss) | (316,000,000) | | (264,000,000) | | | (509,000,000) | |
Weatherford Bermuda | | | | | | | |
Condensed Cash Flow Statements, Captions [Line Items] | | | | | | | |
Net Income (Loss) | (42,000,000) | | (94,000,000) | | | (501,000,000) | |
Weatherford Delaware | | | | | | | |
Condensed Cash Flow Statements, Captions [Line Items] | | | | | | | |
Net Income (Loss) | 1,000,000 | | (77,000,000) | | | (91,000,000) | |
Eliminations | | | | | | | |
Condensed Cash Flow Statements, Captions [Line Items] | | | | | | | |
Intercompany Receivables, Net | (3,219,000,000) | | | | (3,219,000,000) | | (3,069,000,000) |
Equity Investments in Affiliates | (10,478,000,000) | | | | (10,478,000,000) | | (11,394,000,000) |
Long-term Debt | 57,000,000 | | | | 57,000,000 | | 68,000,000 |
Proceeds from Sale of Productive Assets | | | | | 0 | | |
Net Income (Loss) | 109,000,000 | | 374,000,000 | | 979,000,000 | 1,618,000,000 | |
Cash Flows from Operating Activities: | | | | | | | |
Charges from Parent or Subsidiary | | | | | (45,000,000) | (717,000,000) | |
Equity in (Earnings) Loss of Affiliates | | | | | (922,000,000) | (1,025,000,000) | |
Other Adjustments | | | | | (12,000,000) | 124,000,000 | |
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 | |
Acquisition of Intellectual Property | | | | | 0 | 0 | |
Proceeds from Sale of Assets | | | | | | 0 | |
Proceeds from Divestiture of Businesses | | | | | 0 | 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 Increase (Decrease) in Cash and Cash Equivalents | | | | | 0 | 0 | |
Cash and Cash Equivalents at Beginning of Period | | 0 | | 0 | 0 | 0 | |
Cash and Cash Equivalents at End of Period | 0 | | 0 | | 0 | 0 | |
Intercompany Payables, Net | (3,219,000,000) | | | | (3,219,000,000) | | (3,069,000,000) |
Other Non-Current Liabilities | (8,000,000) | | | | (8,000,000) | | (7,000,000) |
Other Assets | 0 | | | | 0 | | 0 |
Reportable Legal Entities [Member] | Other Subsidiaries | | | | | | | |
Condensed Cash Flow Statements, Captions [Line Items] | | | | | | | |
Intercompany Receivables, Net | 2,873,000,000 | | | | 2,873,000,000 | | 2,966,000,000 |
Equity Investments in Affiliates | 401,000,000 | | | | 401,000,000 | | 354,000,000 |
Long-term Debt | 120,000,000 | | | | 120,000,000 | | 130,000,000 |
Net Income (Loss) | | | | | (415,000,000) | (1,018,000,000) | |
Cash Flows from Operating Activities: | | | | | | | |
Charges from Parent or Subsidiary | | | | | 10,000,000 | 675,000,000 | |
Equity in (Earnings) Loss of Affiliates | | | | | 0 | 0 | |
Other Adjustments | | | | | 428,000,000 | (407,000,000) | |
Net Cash Used in Operating Activities | | | | | 23,000,000 | (750,000,000) | |
Cash Flows From Investing Activities: | | | | | | | |
Capital Expenditures for Property, Plant and Equipment | | | | | (114,000,000) | (86,000,000) | |
Payments to Acquire Businesses, Net of Cash Acquired | | | | | | (4,000,000) | |
Acquisition of Intellectual Property | | | | | (9,000,000) | (7,000,000) | |
Proceeds from Sale of Assets | | | | | 45,000,000 | 50,000,000 | |
Proceeds from Divestiture of Businesses | | | | | 301,000,000 | 25,000,000 | |
Net Cash Provided by (Used in) Investing Activities | | | | | 223,000,000 | (14,000,000) | |
Cash Flows From Financing Activities: | | | | | | | |
Borrowings of Short-term Debt, Net | | | | | (1,000,000) | (3,000,000) | |
Borrowings (Repayments) Long-term Debt, Net | | | | | (4,000,000) | (4,000,000) | |
Borrowings (Repayments) Between Subsidiaries, Net | | | | | (75,000,000) | 792,000,000 | |
Other, Net | | | | | (12,000,000) | (48,000,000) | |
Net Cash Provided by Financing Activities | | | | | (92,000,000) | 737,000,000 | |
Effect of Exchange Rate Changes on Cash and Cash Equivalents | | | | | 2,000,000 | (41,000,000) | |
Net Increase (Decrease) in Cash and Cash Equivalents | | | | | 156,000,000 | (68,000,000) | |
Cash and Cash Equivalents at Beginning of Period | | 318,000,000 | | 418,000,000 | 318,000,000 | 418,000,000 | |
Cash and Cash Equivalents at End of Period | 474,000,000 | | 350,000,000 | | 474,000,000 | 350,000,000 | |
Intercompany Payables, Net | 0 | | | | 0 | | 0 |
Other Non-Current Liabilities | 515,000,000 | | | | 515,000,000 | | 362,000,000 |
Other Assets | 2,832,000,000 | | | | 2,832,000,000 | | 3,132,000,000 |
Reportable Legal Entities [Member] | Parent Company [Member] | | | | | | | |
Condensed Cash Flow Statements, Captions [Line Items] | | | | | | | |
Intercompany Receivables, Net | 0 | | | | 0 | | 0 |
Equity Investments in Affiliates | (4,358,000,000) | | | | (4,358,000,000) | | (3,694,000,000) |
Long-term Debt | 0 | | | | 0 | | 0 |
Proceeds from Sale of Productive Assets | | | | | 0 | | |
Net Income (Loss) | | | | | (797,000,000) | (509,000,000) | |
Cash Flows from Operating Activities: | | | | | | | |
Charges from Parent or Subsidiary | | | | | 0 | 15,000,000 | |
Equity in (Earnings) Loss of Affiliates | | | | | 739,000,000 | 547,000,000 | |
Other Adjustments | | | | | 70,000,000 | 70,000,000 | |
Net Cash Used in Operating Activities | | | | | 12,000,000 | 123,000,000 | |
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 | 0 | |
Proceeds from Sale of Assets | | | | | | 0 | |
Proceeds from Divestiture of Businesses | | | | | 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 | | | | | (12,000,000) | (123,000,000) | |
Other, Net | | | | | 0 | 0 | |
Net Cash Provided by Financing Activities | | | | | (12,000,000) | (123,000,000) | |
Effect of Exchange Rate Changes on Cash and Cash Equivalents | | | | | 0 | 0 | |
Net Increase (Decrease) in Cash and Cash Equivalents | | | | | 0 | 0 | |
Cash and Cash Equivalents at Beginning of Period | | 0 | | 0 | 0 | 0 | |
Cash and Cash Equivalents at End of Period | 0 | | 0 | | 0 | 0 | |
Intercompany Payables, Net | 78,000,000 | | | | 78,000,000 | | 3,000,000 |
Other Non-Current Liabilities | 0 | | | | 0 | | 0 |
Other Assets | 0 | | | | 0 | | 0 |
Reportable Legal Entities [Member] | Weatherford Bermuda | Guarantor Subsidiaries [Member] | | | | | | | |
Condensed Cash Flow Statements, Captions [Line Items] | | | | | | | |
Intercompany Receivables, Net | 346,000,000 | | | | 346,000,000 | | 103,000,000 |
Equity Investments in Affiliates | 7,468,000,000 | | | | 7,468,000,000 | | 7,531,000,000 |
Long-term Debt | 6,401,000,000 | | | | 6,401,000,000 | | 6,632,000,000 |
Proceeds from Sale of Productive Assets | | | | | 0 | | |
Net Income (Loss) | | | | | (341,000,000) | (501,000,000) | |
Cash Flows from Operating Activities: | | | | | | | |
Charges from Parent or Subsidiary | | | | | (8,000,000) | (2,000,000) | |
Equity in (Earnings) Loss of Affiliates | | | | | 63,000,000 | 322,000,000 | |
Other Adjustments | | | | | (129,000,000) | 565,000,000 | |
Net Cash Used in Operating Activities | | | | | (415,000,000) | 384,000,000 | |
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 | 0 | |
Proceeds from Sale of Assets | | | | | | 0 | |
Proceeds from Divestiture of Businesses | | | | | 0 | | |
Cash Flows From Financing Activities: | | | | | | | |
Borrowings of Short-term Debt, Net | | | | | 299,000,000 | 90,000,000 | |
Borrowings (Repayments) Long-term Debt, Net | | | | | (13,000,000) | (450,000,000) | |
Borrowings (Repayments) Between Subsidiaries, Net | | | | | (12,000,000) | (154,000,000) | |
Other, Net | | | | | 0 | 0 | |
Net Cash Provided by Financing Activities | | | | | 274,000,000 | (514,000,000) | |
Effect of Exchange Rate Changes on Cash and Cash Equivalents | | | | | 0 | 0 | |
Net Increase (Decrease) in Cash and Cash Equivalents | | | | | (141,000,000) | (130,000,000) | |
Cash and Cash Equivalents at Beginning of Period | | 284,000,000 | | 195,000,000 | 284,000,000 | 195,000,000 | |
Cash and Cash Equivalents at End of Period | 143,000,000 | | 65,000,000 | | 143,000,000 | 65,000,000 | |
Intercompany Payables, Net | 0 | | | | 0 | | 0 |
Other Non-Current Liabilities | 8,000,000 | | | | 8,000,000 | | 7,000,000 |
Other Assets | 8,000,000 | | | | 8,000,000 | | 15,000,000 |
Reportable Legal Entities [Member] | Weatherford Delaware | Guarantor Subsidiaries [Member] | | | | | | | |
Condensed Cash Flow Statements, Captions [Line Items] | | | | | | | |
Intercompany Receivables, Net | 0 | | | | 0 | | 0 |
Equity Investments in Affiliates | 6,967,000,000 | | | | 6,967,000,000 | | 7,203,000,000 |
Long-term Debt | 788,000,000 | | | | 788,000,000 | | 775,000,000 |
Proceeds from Sale of Productive Assets | | | | | 0 | | |
Net Income (Loss) | | | | | (215,000,000) | (91,000,000) | |
Cash Flows from Operating Activities: | | | | | | | |
Charges from Parent or Subsidiary | | | | | 43,000,000 | 29,000,000 | |
Equity in (Earnings) Loss of Affiliates | | | | | 120,000,000 | 156,000,000 | |
Other Adjustments | | | | | (46,000,000) | (166,000,000) | |
Net Cash Used in Operating Activities | | | | | (98,000,000) | (72,000,000) | |
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 | 0 | |
Proceeds from Sale of Assets | | | | | | 0 | |
Proceeds from Divestiture of Businesses | | | | | 0 | | |
Cash Flows From Financing Activities: | | | | | | | |
Borrowings of Short-term Debt, Net | | | | | 0 | 0 | |
Borrowings (Repayments) Long-term Debt, Net | | | | | 0 | 587,000,000 | |
Borrowings (Repayments) Between Subsidiaries, Net | | | | | 99,000,000 | (515,000,000) | |
Other, Net | | | | | 0 | 0 | |
Net Cash Provided by Financing Activities | | | | | 99,000,000 | 72,000,000 | |
Effect of Exchange Rate Changes on Cash and Cash Equivalents | | | | | 0 | 0 | |
Net Increase (Decrease) in Cash and Cash Equivalents | | | | | 1,000,000 | 0 | |
Cash and Cash Equivalents at Beginning of Period | | $ 0 | | $ 0 | 0 | 0 | |
Cash and Cash Equivalents at End of Period | 1,000,000 | | $ 0 | | 1,000,000 | $ 0 | |
Intercompany Payables, Net | 3,141,000,000 | | | | 3,141,000,000 | | 3,066,000,000 |
Other Non-Current Liabilities | 0 | | | | 0 | | 0 |
Other Assets | $ 135,000,000 | | | | $ 135,000,000 | | $ 4,000,000 |