Annual report pursuant to Section 13 and 15(d)

Income Taxes (Summary of Activities Related to Unrecognized Tax Benefits) (Details)

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Income Taxes (Summary of Activities Related to 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 $ 27 $ 26 $ 29
Increases related to tax positions taken during a prior period 0 2 0
Increases related to tax positions taken during the current period 2 2 2
Decreases related to tax positions taken during a prior period (3) 0 (2)
Decreases as a result of a lapse of the applicable statute of limitations (1) (3) (3)
Ending balance $ 25 $ 27 $ 26