Borrowings and Other Debt Obligations - Narrative (Details) - USD ($)					1 Months Ended	3 Months Ended				12 Months Ended
	Nov. 17, 2022	Aug. 10, 2022	Oct. 20, 2021	Aug. 28, 2020	Jan. 31, 2023	Dec. 31, 2022	Nov. 17, 2022	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Nov. 22, 2022	Oct. 17, 2022	Sep. 30, 2022	Oct. 27, 2021	Dec. 12, 2019
Debt Instrument [Line Items]
Interest paid on early redemption of debt								$ 71,000,000
Bond Redemption Premium										$ 5,000,000	$ 131,000,000	$ 0
Gain (loss) on extinguishment of debt			$ (2,000,000)							(5,000,000)	(170,000,000)	$ 0
Debt and lease obligation						$ 2,272,000,000				2,272,000,000
Debt related commitment fees and debt issuance costs				$ 15,000,000
Letters of credit outstanding, cash collateral						199,000,000				199,000,000
Letters of credit outstanding, amount						395,000,000				395,000,000
Debt instrument, unused borrowing capacity, amount						160,000,000				160,000,000
Minimum liquidity amount														$ 250,000,000
ABL Credit Agreement
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity																	$ 450,000,000
Senior Notes 6.5 Percent Due 2028
Debt Instrument [Line Items]
Stated interest rate on debt									6.50%						6.50%
Face amount of debt									$ 500,000,000
Bond Redemption Premium									22,000,000
Gain (loss) on extinguishment of debt, before write off of debt issuance cost									$ 37,000,000
Repayments of Senior Debt						8,000,000
Senior Notes 6.5 Percent Due 2028 | Subsequent Event
Debt Instrument [Line Items]
Repayments of Senior Debt					$ 11,000,000
Senior Notes 8.625 Percent Due 2030
Debt Instrument [Line Items]
Stated interest rate on debt																8.625%
Face amount of debt								1,600,000,000			1,600,000,000					$ 1,600,000,000
Debt tender redemption																$ 1,600,000,000
Amended LC Credit Agreement [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity																	$ 215,000,000
Senior Notes
Debt Instrument [Line Items]
Long-term debt						2,193,000,000		2,372,000,000		2,193,000,000	2,372,000,000
Repayments of Senior Debt	$ 125,000,000	$ 50,000,000
Additional Repayments Of Senior Debt						20,000,000
Senior Notes | Subsequent Event
Debt Instrument [Line Items]
Repayments of Senior Debt					$ 20,000,000
Senior Notes | Exit Notes, 11.00 Percent Due 2024
Debt Instrument [Line Items]
Stated interest rate on debt																	11.00%
Face amount of debt																	$ 2,100,000,000
Bond Redemption Premium							$ 5,000,000
Senior Notes | Senior Notes 8.75 Percent Due 2024
Debt Instrument [Line Items]
Stated interest rate on debt				8.75%
Face amount of debt				$ 500,000,000
Debt issuance costs, gross				25,000,000
Debt related commitment fees and debt issuance costs				$ 15,000,000
Senior Notes | Senior Notes 6.5 Percent Due 2028
Debt Instrument [Line Items]
Long-term debt						482,000,000		488,000,000		482,000,000	488,000,000
Senior Notes | Senior Notes 8.625 Percent Due 2030
Debt Instrument [Line Items]
Long-term debt						1,586,000,000		$ 1,584,000,000		1,586,000,000	$ 1,584,000,000
Line of Credit | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity													$ 400,000,000	370,000,000
Debt Instrument, Covenant, Excess Of Net Of Unrestricted Cash Amount														400,000,000
Line of Credit | Tranche A | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity														280,000,000
Line of Credit | Tranche B | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity														90,000,000
Line of Credit | Tranche B, Revolving Loan | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity														45,000,000
Line of Credit | Exit Notes | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Covenant, Outstanding, Amount														50,000,000
Minimum liquidity amount														250,000,000
Line of Credit | Exit Notes | Revolving Credit Facility [Member] | Current Testing Period
Debt Instrument [Line Items]
Debt Instrument, Covenant, Minimum Interest Coverage Ratio														2.00
Debt Instrument, Covenant, Maximum Interest Coverage Ratio														4.00
Line of Credit | Exit Notes | Revolving Credit Facility [Member] | Forecast Testing Period
Debt Instrument [Line Items]
Debt Instrument, Covenant, Minimum Interest Coverage Ratio														2.50
Debt Instrument, Covenant, Maximum Interest Coverage Ratio														$ 3.50
Senior Notes 8.625 Percent Due 2030
Debt Instrument [Line Items]
Bond Redemption Premium			103,000,000
LC Credit Agreement Letters of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount						195,000,000				195,000,000
Uncommitted Letters of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount						$ 200,000,000				$ 200,000,000
Exit Notes
Debt Instrument [Line Items]
Debt instrument, repurchased face amount			200,000,000
Interest paid on early redemption of debt			8,000,000
Bond Redemption Premium			$ 6,000,000