Long-term Debt and Finance Leases - Senior Notes Redemptions (Details) - USD ($)		12 Months Ended
Aug. 24, 2021	Dec. 31, 2021
Debt Instrument [Line Items]
Principal Repurchased		$ 1,855,000,000
Cash Paid	$ 1,900,000,000	1,949,000,000
Accrued interest		$ 29,000,000
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
Cash Paid		$ 1,056,000,000
Average Early Redemption Percentage		103.625%
Senior Notes, due 2027
Debt Instrument [Line Items]
Interest rate, stated percentage	6.625%	6.625%
Principal Repurchased	$ 355,000,000	$ 855,000,000
Cash Paid		$ 893,000,000
Average Early Redemption Percentage		103.313%

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

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