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Long-term Debt Narrative (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions			1 Months Ended	11 Months Ended	12 Months Ended
	Dec. 13, 2019	Feb. 28, 2018	Dec. 31, 2019	Dec. 13, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 12, 2019	Sep. 30, 2019	Jun. 15, 2019	Mar. 31, 2018	Jun. 30, 2017	Jun. 26, 2017	Jun. 07, 2016
Debt Instrument [Line Items]
Debt Instrument, Increase, Accrued Interest					$ 12		$ 140
Debt and Lease Obligation			$ 2,161		2,161	$ 7,662
Repayment of Long-term Debt, Long-term Lease Obligation, and Capital Security			1	$ 318		502	69
Liabilities Subject to Compromise								$ 7,600
Debtor Reorganization Items, Discharge of Claims and Liabilities			0	4,297
Predecessor Capital in Excess of Par Value			0		0	0
Long-term Debt and Lease Obligation			2,151		2,151	7,605
Bond Tender and Call Premium			0	0		(34)	0
Fresh-Start Adjustment, Increase (Decrease), Liabilities Subject to Compromise	$ 0			0				7,634
Term Loan Borrowings before Debt Issuance Cost [Member]
Debt Instrument [Line Items]
Debt and Lease Obligation						310
Term Loan Agreement
Debt Instrument [Line Items]
Debt and Lease Obligation			0		0	308
Short-term Debt						50
Senior Notes, 9.875 Percent due 2024
Debt Instrument [Line Items]
Long-term Debt												$ 540	$ 250
Senior Notes, 9.875 Percent due 2025
Debt Instrument [Line Items]
Long-term Debt		$ 600
Senior Notes, 9.625% due 2019 [Member]
Debt Instrument [Line Items]
Repayment of Long-term Debt, Long-term Lease Obligation, and Capital Security		475
Interest Payable		20
Long-term Debt		$ 425
Exit Notes, Takeback Notes \| Exit Notes, 11.00 Percent Due 2024 [Member]
Debt Instrument [Line Items]
Face amount of debt								500
Exchangeable Debt [Member]
Debt Instrument [Line Items]
Face amount of debt														$ 1,265
Stated interest rate on debt														5.875%
Debt Instrument, Convertible, Conversion Price														$ 7.74
Debt Instrument, Convertible, Shares														163.4
Predecessor Capital in Excess of Par Value														$ 97
Interest Expense, Debt					50	99	$ 97
Senior Notes [Member] \| Exit Notes, 11.00 Percent Due 2024 [Member]
Debt Instrument [Line Items]
Debt and Lease Obligation						0		2,097
Face amount of debt								$ 2,100
Stated interest rate on debt								11.00%
Senior Notes [Member] \| Senior Notes, 4.50% due 2022
Debt Instrument [Line Items]
Debt and Lease Obligation			0		0	644
Senior Notes [Member] \| Senior Notes, 5.125% due 2020
Debt Instrument [Line Items]
Debt and Lease Obligation			0		0	364
Senior Notes [Member] \| Senior Notes, 5.95% due 2042
Debt Instrument [Line Items]
Debt and Lease Obligation			0		0	369
Senior Notes [Member] \| Senior Notes, 6.50% due 2036
Debt Instrument [Line Items]
Debt and Lease Obligation			0		0	447
Senior Notes [Member] \| Senior Notes, 6.75% due 2040
Debt Instrument [Line Items]
Debt and Lease Obligation			0		0	457
Senior Notes [Member] \| Senior Notes, 6.80% due 2037
Debt Instrument [Line Items]
Debt and Lease Obligation			0		0	255
Stated interest rate on debt										6.80%
Senior Notes [Member] \| Senior Notes, 7.00% due 2038
Debt Instrument [Line Items]
Debt and Lease Obligation			0		0	456
Senior Notes [Member] \| Senior Notes, 9.875 Percent due 2024
Debt Instrument [Line Items]
Debt and Lease Obligation			0		0	781
Stated interest rate on debt													9.875%
Senior Notes [Member] \| Senior Notes, 7.75 Percent due 2021
Debt Instrument [Line Items]
Debt and Lease Obligation			0		0	743
Stated interest rate on debt										7.75%
Senior Notes [Member] \| Senior Notes, 8.25 Percent due 2023
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Debt and Lease Obligation			0		0	742
Stated interest rate on debt										8.25%
Senior Notes [Member] \| Senior Notes, 6.00% due 2018 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt											6.00%
Senior Notes [Member] \| Senior Notes, 9.875 Percent due 2025
Debt Instrument [Line Items]
Debt and Lease Obligation			$ 0		$ 0	$ 588
Stated interest rate on debt		9.875%
Senior Notes [Member] \| Senior Notes, 9.625% due 2019 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt		9.625%
LIBOR \| Term Loan Agreement
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate					2.30%
Weatherford Bermuda [Member] \| Senior Notes [Member] \| Senior Notes, 6.80% due 2037
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Stated interest rate on debt						6.80%			6.80%
Weatherford Bermuda [Member] \| Senior Notes [Member] \| Senior Notes, 6.35% due 2017 [Member]
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Stated interest rate on debt						6.35%						6.35%
Weatherford Delaware [Member] \| Senior Notes [Member] \| Senior Notes, 4.50% due 2022
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Stated interest rate on debt						4.50%			4.50%
Weatherford Delaware [Member] \| Senior Notes [Member] \| Senior Notes, 5.125% due 2020
Debt Instrument [Line Items]
Stated interest rate on debt						5.125%			5.125%
Weatherford Delaware [Member] \| Senior Notes [Member] \| Senior Notes, 5.95% due 2042
Debt Instrument [Line Items]
Stated interest rate on debt						5.95%			5.95%
Weatherford Delaware [Member] \| Senior Notes [Member] \| Senior Notes, 6.50% due 2036
Debt Instrument [Line Items]
Stated interest rate on debt						6.50%			6.50%
Weatherford Delaware [Member] \| Senior Notes [Member] \| Senior Notes, 6.75% due 2040
Debt Instrument [Line Items]
Stated interest rate on debt						6.75%			6.75%
Weatherford Delaware [Member] \| Senior Notes [Member] \| Senior Notes, 7.00% due 2038
Debt Instrument [Line Items]
Stated interest rate on debt						7.00%			7.00%
Weatherford Delaware [Member] \| Senior Notes [Member] \| Senior Notes, 9.875 Percent due 2024
Debt Instrument [Line Items]
Stated interest rate on debt									9.875%
Weatherford Delaware [Member] \| Senior Notes [Member] \| Senior Notes, 7.75 Percent due 2021
Debt Instrument [Line Items]
Stated interest rate on debt						7.75%			7.75%
Weatherford Delaware [Member] \| Senior Notes [Member] \| Senior Notes, 8.25 Percent due 2023
Debt Instrument [Line Items]
Stated interest rate on debt						8.25%			8.25%
Weatherford Delaware [Member] \| Senior Notes [Member] \| Senior Notes, 6.00% due 2018 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt			6.00%		6.00%	6.00%
Weatherford Delaware [Member] \| Senior Notes [Member] \| Senior Notes, 9.625% due 2019 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt			9.625%		9.625%	9.625%
Weatherford Delaware [Member] \| Senior Notes [Member] \| Senior Notes, 9.87 Percent due 2024 [Member]
Debt Instrument [Line Items]
Stated interest rate on debt						9.875%
Reorganization Adjustments
Debt Instrument [Line Items]
Fresh-Start Adjustment, Increase (Decrease), Liabilities Subject to Compromise	$ 7,634			$ 7,634				$ (7,634)
Debt Instrument, Redemption, Period One [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	105.50%
Debt Instrument, Redemption, Period Two [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	102.75%
Debt Instrument, Redemption, Period Three [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	100.00%
Debt Redemption, $500 million Redemption [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	103.00%
Debt Redemption, $500 million Redemption [Member] \| Senior Notes [Member] \| Exit Notes, 11.00 Percent Due 2024 [Member]
Debt Instrument [Line Items]
Debt and Lease Obligation								$ 500
Debt Redemption, Change Of Control [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	101.00%