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

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Debt Instrument, Purchase Accounting, Non-Cash Fair Value Adjustment

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Debt Instrument, Purchase Accounting, Non-Cash Fair Value Adjustment, Percentage

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Debt Instrument, Selling Price, Percentage of Face Value

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Payment to Fund Tender Offers, Amount

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Tender Offer Fund, Amount

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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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Amount of the fee that accompanies borrowing money under the debt instrument.

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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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Percentage of principal amount of debt redeemed.

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

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Amount of unamortized debt discount (premium) and debt issuance costs.

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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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Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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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 ($)					1 Months Ended		6 Months Ended	12 Months Ended
Debt (Senior Notes - Narrative) (Details) - USD ($)	Jan. 27, 2023	Dec. 22, 2021	Sep. 01, 2021	Aug. 30, 2021	Aug. 31, 2020	Jan. 31, 2015	Jun. 30, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 30, 2022	May 31, 2022	Jan. 06, 2022	Nov. 30, 2021	Apr. 07, 2020	Jul. 31, 2018
Debt Instrument [Line Items]
Debt repurchased face amount								$ 816,000,000
Gain (Loss) on Early Extinguishment of Debt								(14,000,000)	$ (93,000,000)	$ 35,000,000
Repayments of long-term debt								822,000,000
Debt instrument, unamortized discount (premium) and debt issuance costs, net								8,000,000
Long-term debt								4,392,000,000	$ 5,407,000,000
Debt instrument, fee amount								$ 6,000,000
Senior Notes
Debt Instrument [Line Items]
Gain (Loss) on Early Extinguishment of Debt		$ (33,000,000)		$ (60,000,000)			$ 35,000,000
Repayments of long-term debt				$ 845,000,000
Debt instrument, purchase accounting, non-cash fair value adjustment			$ 26,000,000
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, noncurrent						$ 1,000,000,000
Debt Instrument, Interest Rate, Stated Percentage				4.95%		4.95%		4.95%	4.95%				5.95%		6.45%	6.20%
Debt repurchased face amount				$ 167,000,000			36,000,000
4.95% Senior Notes due January 2025 \| Senior Notes \| Maximum
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage												5.70%
4.10% Senior Notes due March 2022 \| Senior Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				4.10%				4.10%	4.10%
Debt repurchased face amount				$ 6,000,000			$ 6,000,000	$ 201,000,000
7.75% Senior Notes due October 2027 \| Senior Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				7.50%			7.50%
Debt repurchased face amount				$ 618,000,000			$ 21,000,000
7.75% Senior Notes due October 2027 \| Senior Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage								7.75%	7.75%
Debt repurchased face amount							44,000,000	$ 19,000,000
7.75% Senior Notes due October 2027 \| Senior Notes \| Subsequent Event
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.75%
Debt instrument, redemption price, percentage of principal amount redeemed	103.875%
4.05% Senior Notes Due January 2020 \| Senior Notes
Debt Instrument [Line Items]
Debt repurchased face amount							$ 72,000,000
8.375% Senior Notes due September 2028 \| Senior Notes
Debt Instrument [Line Items]
Senior notes, noncurrent					$ 350,000,000
Debt Instrument, Interest Rate, Stated Percentage								8.375%	8.375%
Debt repurchased face amount								$ 46,000,000
Proceeds from issuance of long-term debt					$ 345,000,000
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 Merger
Debt Instrument [Line Items]
Senior notes, noncurrent					$ 510,000,000
Debt Instrument, Interest Rate, Stated Percentage					8.875%
5.375% Senior Notes due March 2030 \| Senior Notes
Debt Instrument [Line Items]
Senior notes, noncurrent				$ 1,200,000,000
Debt Instrument, Interest Rate, Stated Percentage				5.375%				5.375%	5.375%
Proceeds from issuance of long-term debt				$ 1,183,000,000
Debt instrument, unamortized discount (premium) and debt issuance costs, net				$ 6,000,000
5.375% Senior Notes due February 2029 \| Senior Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			5.375%					5.375%	5.375%
Debt instrument, purchase accounting, non-cash fair value adjustment, percentage			103.766%
Long-term debt			$ 700,000,000											$ 700,000,000
5.375% Senior Notes due February 2029 \| Senior Notes \| Indigo Merger
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			5.375%
Senior note assumed in merger agreement			$ 700,000,000
4.75% Senior Notes due February 2032 \| Senior Notes
Debt Instrument [Line Items]
Senior notes, noncurrent		1,150,000,000
Debt Instrument, Interest Rate, Stated Percentage								4.75%	4.75%
Proceeds from issuance of long-term debt		1,133,000,000
Debt instrument, unamortized discount (premium) and debt issuance costs, net		1,000,000
Payment to fund tender offers, amount		332,000,000
Tender offer fund, amount		$ 300,000,000
Term Loan Due June 2027 \| Term Loan
Debt Instrument [Line Items]
Debt repurchased face amount								$ 550,000,000			$ 546,000,000