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Long-term Debt and Finance Leases - Senior Notes Issuance and Redemptions (Details) - USD ($)		12 Months Ended
	Aug. 23, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Principal repurchased		$ 1,855,000,000
Repayment of senior notes		1,949,000,000
Loss on debt extinguishment		$ 0	$ (77,000,000)	$ (9,000,000)
Write off of deferred debt issuance cost			12,000,000
Senior Notes, due 2032
Debt Instrument [Line Items]
Aggregate principal amount	$ 1,100,000,000
Interest rate, stated percentage	3.875%
Increase in basis points if sustainability targets are not achieved	0.25%
Senior Notes due 2026
Debt Instrument [Line Items]
Interest rate, stated percentage	7.25%	7.25%
Principal repurchased	$ 1,000,000,000	$ 1,000,000,000
Repayment of senior notes		$ 1,056,000,000
Senior Notes, due 2027
Debt Instrument [Line Items]
Interest rate, stated percentage	6.625%	6.625%
Principal repurchased	$ 355,000,000	$ 855,000,000
Repayment of senior notes		$ 893,000,000
Senior Notes
Debt Instrument [Line Items]
Principal repurchased			1,900,000,000
Repayment of senior notes			1,900,000,000
Loss on debt extinguishment			$ 77,000,000

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