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Long-term Debt and Finance Leases - Senior Notes Issuance and Redemptions (Details) - USD ($) |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Aug. 24, 2021 | Aug. 23, 2021 | Dec. 02, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Aug. 02, 2016
Debt Instrument [Line Items] |  |  |  |  |  |  |
Principal Repurchased |  |  |  | $ 1,855,000,000 |  |  |
Cash Paid | $ 1,900,000,000 |  |  | 1,949,000,000 |  |  |
Loss on debt extinguishment | $ 77,000,000 |  |  | (77,000,000) | $ (9,000,000) | $ (51,000,000) |
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% |  | 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 |  |  |
Cash Paid |  |  |  | $ 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 |  |  |
Cash Paid |  |  |  | $ 893,000,000 |  |  |
Recourse Debt | Senior Notes, due 2032 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate, stated percentage |  |  |  | 3.875% |  |  |
Recourse Debt | Senior Notes, due 2026 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate, stated percentage |  |  |  | 7.25% |  |  |
Recourse Debt | Senior Notes, due 2027 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Interest rate, stated percentage |  |  |  | 6.625% |  |  | 6.625%
Recourse Debt | 3.375% Senior Notes Due 2029 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Aggregate principal amount |  |  | $ 500,000,000 |  |  |  |
Interest rate, stated percentage |  |  | 3.375% | 3.375% |  |  |
Recourse Debt | Senior Notes, due 2031 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Aggregate principal amount |  |  | $ 1,000,000,000 |  |  |  |
Interest rate, stated percentage |  |  | 3.625% | 3.625% |  |  |
Recourse Debt | Senior Secured First Lien Notes due 2025 to 2027 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Aggregate principal amount |  |  | $ 1,400,000,000 |  |  |  |
Recourse Debt | Senior Secured First Lien Notes, due 2025 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Aggregate principal amount |  |  | $ 500,000,000 |  |  |  |
Interest rate, stated percentage |  |  | 2.00% | 2.00% |  |  |
Recourse Debt | Senior Secured First Lien Notes, due 2027 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Aggregate principal amount |  |  | $ 900,000,000 |  |  |  |
Interest rate, stated percentage |  |  | 2.45% | 2.45% |  |  |
Increase in basis points if sustainability targets are not achieved |  |  | 0.25% |  |  |  |

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