Debt Instrument, Incremental Decrease in Basis Spread on Variable Rate Resulting from Upgrades

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- Definition

Debt Instrument, Incremental Increase in Basis Spread on Variable Rate Resulting from Downgrades

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- Definition

Debt Instrument, Selling Price, Percentage of Face Value

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Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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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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Face (par) amount of the original debt instrument that was repurchased.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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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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Carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. Senior note holders are paid off in full before any payments are made to junior note holders.

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Debt (Senior Notes - Narrative) (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended		6 Months Ended
	Aug. 31, 2020	Jan. 31, 2015	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Jul. 24, 2020	Jul. 31, 2018
Debt Instrument [Line Items]
Gain on extinguishment of debt			$ 0	$ 7	$ 0	$ 35
Senior Notes
Debt Instrument [Line Items]
Repayments of long-term debt						72
Gain on extinguishment of debt						$ 35
Senior Notes \| LIBOR
Debt Instrument [Line Items]
Incremental increase in basis points resulting from downgrades		0.25%
Incremental decrease in basis points resulting from upgrades		0.25%
4.95% Senior Notes due January 2025 \| Senior Notes
Debt Instrument [Line Items]
Senior notes		$ 1,000
Stated interest rate		4.95%	4.95%	4.95%	4.95%	4.95%		4.95%	6.45%	6.20%
Repurchased amount				$ 36		$ 36
4.10% Senior Notes due March 2022 \| Senior Notes
Debt Instrument [Line Items]
Stated interest rate			4.10%	4.10%	4.10%	4.10%		4.10%
Repurchased amount				$ 6		$ 6
7.50% Senior Notes Due April 2026 \| Senior Notes
Debt Instrument [Line Items]
Stated interest rate			7.50%	7.50%	7.50%	7.50%		7.50%
Repurchased amount				$ 21		$ 21
7.75% Senior Notes due October 2027 \| Senior Notes
Debt Instrument [Line Items]
Stated interest rate			7.75%	7.75%	7.75%	7.75%		7.75%
Repurchased amount				$ 44		$ 44
8.375% Senior Notes due September 2028 \| Senior Notes
Debt Instrument [Line Items]
Senior notes	$ 350
Stated interest rate	8.375%		8.375%		8.375%			8.375%
Proceeds from issuance of long-term debt	$ 345
Percentage price of face value of the notes sold to the public	100.00%
Eight Point Eight Seven Five Percent Senior Notes Due 2023 \| Senior Notes \| Montage Resources Corporation
Debt Instrument [Line Items]
Senior notes	$ 510
Stated interest rate	8.875%
5.375% Senior Notes due 2029 \| Senior Notes \| Indigo Natural Resources, LLC \| Forecast
Debt Instrument [Line Items]
Stated interest rate							5.375%
Senior note assumed in merger agreement							$ 700