Stock-Based Compensation - Restricted Stock Units (RSUs) (Details) - RSUs - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Stock-Based Compensation
Award vesting period	3 years
Units
Non-vested at beginning of period (in shares)	669,952
Granted (in shares)	530,565
Forfeited (in shares)	(43,601)
Vested (in shares)	(299,999)
Non-vested at end of period (in shares)	856,917	669,952
Weighted Average Grant Date Fair Value per Unit
Non-vested at beginning of period (in usd per share)	$ 38.69
Granted (in usd per share)	41.26	$ 39.00	$ 38.05
Forfeited (in usd per share)	41.09
Vested (in usd per share)	38.36
Non-vested at end of period (in usd per share)	$ 40.25	$ 38.69
Vested in period, fair value	$ 10	$ 12	$ 17
Weighted average grant date fair value (in usd per share)	$ 41.26	$ 39.00	$ 38.05

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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