Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Equity [Abstract]
Other comprehensive income (loss)	$ 1	$ (1)	$ (2)

Amount after tax and reclassification adjustments of other comprehensive income (loss).

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+ Details