Amount of short-term and long-term debt and lease obligation.

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Amount of letters of credit outstanding under debtor-in-possession financing arrangement.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt and lease obligation, classified as current.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Amount of borrowings from a bank classified as other, maturing within one year or operating cycle, if longer.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Letters of Credit Outstanding, Cash Collateral

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Short-term Borrowings and Other Debt Obligations Narrative (Details) - USD ($)		3 Months Ended		12 Months Ended
	Jul. 03, 2019	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Jun. 30, 2017	Jun. 26, 2017
Short-term Debt [Line Items]
Debt and Lease Obligation		$ 2,161,000,000		$ 2,161,000,000	$ 7,662,000,000
Current Portion of Long-term Debt		10,000,000		10,000,000	57,000,000
364 Day Secured RCF [Member]
Short-term Debt [Line Items]
Short-term Debt		0		0	317,000,000
Committed Letters of Credit [Member]
Short-term Debt [Line Items]
Letters of Credit Outstanding, Amount		399,000,000		399,000,000
Letters of Credit Outstanding, Cash Collateral		152,000,000		152,000,000
A&R Credit Agreement Letters of Credit [Member]
Short-term Debt [Line Items]
Letters of Credit Outstanding, Amount		141,000,000		141,000,000
LC Credit Agreement Letters of Credit [Member]
Short-term Debt [Line Items]
Letters of Credit Outstanding, Amount		105,000,000		105,000,000
Domestic and Foreign Facility [Member]
Short-term Debt [Line Items]
Short term borrowings			$ 3,000,000
Uncommitted Letters of Credit [Member]
Short-term Debt [Line Items]
Letters of Credit Outstanding, Amount		153,000,000		153,000,000
DIP Credit Agreement
Short-term Debt [Line Items]
Proceeds from borrowings	$ 1,400,000,000		1,400,000,000
Repayments of long-term debt	616,000,000
Outstanding letters of credit	$ 271,000,000
Revolving Credit Facility [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity			$ 305,000,000		846,000,000
A&R Credit Agreement [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity					529,000,000
Term Loan Borrowings before Debt Issuance Cost [Member]
Short-term Debt [Line Items]
Debt and Lease Obligation					310,000,000
Senior Notes, 9.875 Percent due 2024
Short-term Debt [Line Items]
Long-term Debt							$ 540,000,000	$ 250,000,000
Term Loan Agreement
Short-term Debt [Line Items]
Debt and Lease Obligation		0		$ 0	308,000,000
Short-term Debt					50,000,000
LIBOR \| DIP Credit Agreement \| Minimum
Short-term Debt [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.00%
LIBOR \| DIP Credit Agreement \| Maximum
Short-term Debt [Line Items]
Debt Instrument, Basis Spread on Variable Rate	3.00%
LIBOR \| 364-day credit agreement [Member]
Short-term Debt [Line Items]
Debt Instrument, Basis Spread on Variable Rate				3.05%
LIBOR \| Term Loan Agreement
Short-term Debt [Line Items]
Debt Instrument, Basis Spread on Variable Rate				2.30%
Base Rate \| DIP Credit Agreement \| Maximum
Short-term Debt [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.00%
Extending Lenders [Member] \| A&R Credit Agreement [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity					303,000,000
Extending Lenders [Member] \| LIBOR \| A&R Credit Agreement [Member]
Short-term Debt [Line Items]
Debt Instrument, Basis Spread on Variable Rate				3.55%
Extending Lenders [Member] \| LIBOR \| A&R Credit Agreement [Member] \| Minimum
Short-term Debt [Line Items]
Debt Instrument, Basis Spread on Variable Rate				3.55%
Nonextending Lenders [Member] \| A&R Credit Agreement [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity					226,000,000
Nonextending Lenders [Member] \| LIBOR \| A&R Credit Agreement [Member] \| Minimum
Short-term Debt [Line Items]
Debt Instrument, Basis Spread on Variable Rate				2.80%
Capital and Other Lease Obligations [Member]
Short-term Debt [Line Items]
Debt and Lease Obligation		64,000,000		$ 64,000,000	69,000,000
Term Loan Agreement
Short-term Debt [Line Items]
Long-term Debt, Current Maturities		50,000,000		50,000,000
Senior Notes [Member] \| Senior Notes, 9.875 Percent due 2024
Short-term Debt [Line Items]
Debt and Lease Obligation		$ 0		$ 0	$ 781,000,000
Debt Instrument, Interest Rate, Stated Percentage								9.875%
Senior Notes [Member] \| Senior Notes, 9.875 Percent due 2024 \| Weatherford Delaware [Member]
Short-term Debt [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			9.875%
Senior Notes [Member] \| Senior Notes, 6.00% due 2018 [Member]
Short-term Debt [Line Items]
Debt Instrument, Interest Rate, Stated Percentage						6.00%
Senior Notes [Member] \| Senior Notes, 6.00% due 2018 [Member] \| Weatherford Delaware [Member]
Short-term Debt [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		6.00%		6.00%	6.00%
Senior Notes [Member] \| Senior Notes, 6.35% due 2017 [Member] \| Weatherford Bermuda [Member]
Short-term Debt [Line Items]
Debt Instrument, Interest Rate, Stated Percentage					6.35%		6.35%
Term Loan Agreement
Short-term Debt [Line Items]
Quarterly payment on debt		$ 12,500,000