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Fair Value Measurements - Long-Term Debt (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Nov. 16, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Debt instrument, interest rate, stated percentage | 5.375% |  |
Carrying Amount |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Estimated fair values of long-term debt | $ 2,173 |  | $ 2,127
Fair Value |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Estimated fair values of long-term debt | $ 2,264 |  | 2,276
Senior Notes |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Debt instrument, interest rate, stated percentage | 5.375% |  |
Senior Notes | 5.375% Notes due 2022 |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Debt instrument, interest rate, stated percentage | 5.375% |  |
Senior Notes | 5.375% Notes due 2022 | Carrying Amount |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Estimated fair values of long-term debt | $ 0 |  | 697
Senior Notes | 5.375% Notes due 2022 | Fair Value |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Estimated fair values of long-term debt | $ 0 |  | 742
Senior Notes | 4.375% Notes due 2028 |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Debt instrument, interest rate, stated percentage | 4.375% |  |
Senior Notes | 4.375% Notes due 2028 | Carrying Amount |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Estimated fair values of long-term debt | $ 791 |  | 789
Senior Notes | 4.375% Notes due 2028 | Fair Value |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Estimated fair values of long-term debt | $ 829 |  | 843
Senior Notes | 3.875% Notes due 2030 |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Debt instrument, interest rate, stated percentage | 3.875% |  |
Senior Notes | 3.875% Notes due 2030 | Carrying Amount |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Estimated fair values of long-term debt | $ 642 |  | 641
Senior Notes | 3.875% Notes due 2030 | Fair Value |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Estimated fair values of long-term debt | $ 675 |  | 691
Senior Notes | 3.875% Notes due 2032 |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Debt instrument, interest rate, stated percentage | 3.875% | 5.375% |
Senior Notes | 3.875% Notes due 2032 | Carrying Amount |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Estimated fair values of long-term debt | $ 740 |  | 0
Senior Notes | 3.875% Notes due 2032 | Fair Value |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Estimated fair values of long-term debt | $ 760 |  | $ 0

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