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