| Income Taxes - Summary of Income Tax Contingencies (Details) - USD ($) $ in Millions | 12 Months Ended | |
|---|---|---|
| Dec. 31, 2023 | Dec. 31, 2022 | |
| Changes in uncertain income tax positions | ||
| Balance, beginning of year | $ 198 | $ 179 | 
| Increases in tax positions for prior years | 4 | 3 | 
| Increases in tax positions for current year | 32 | 31 | 
| Decreases in tax positions for prior years | (2) | (15) | 
| Decreases in tax positions for current years | (3) | 0 | 
| Decreases related to settlement with taxing authorities | (58) | 0 | 
| Balance, end of year | $ 171 | $ 198 | 
| X | ||||||||||
| 
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available. 
 | 
| X | ||||||||||
| 
- Definition Amount of unrecognized tax benefits. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
 | 
| X | ||||||||||
| 
- Definition Amount of decrease in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
 | 
| X | ||||||||||
| 
- Definition Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
 | 
| X | ||||||||||
| 
- Definition Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
 | 
| X | ||||||||||
| 
- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
 | 
| X | ||||||||||
| 
- Definition Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
 |