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Income Taxes - Unrecognized Tax Benefits (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Beginning balance $ 1,345 $ 1,206 $ 1,177
Additions based on tax positions related to the current year 6 15 6
Additions for tax positions of prior years 6 177 67
Reductions for tax positions of prior years (62) (5) (34)
Settlements (510) 0 (9)
Lapse of statute (75) (48) (1)
Ending balance $ 710 $ 1,345 $ 1,206