Stock Based Compensation - Schedule of Performance Award Transactions (Details) - Performance Unit - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021
Number of Shares and Units
Beginning balance (in shares)	679	613
Granted (in shares)	0	8
Granted for Performance Multiple (in shares)	0	19
Released (in shares)	(57)	(98)
Forfeited for Performance Multiple (in shares)	(56)	0
Ending balance (in shares)	566	542
Weighted Average Grant Date Fair Value
Beginning balance (in USD per share)	$ 84.97	$ 88.38
Granted (in USD per share)	0	55.69
Granted for Performance Multiple (in USD per share)	0	113.81
Released (in USD per share)	136.74	113.81
Forfeited for Performance Multiple (in USD per share)	136.74	0
Ending balance (in USD per share)	$ 74.60	$ 84.23
Additional Disclosures
Performance multiple applied at the completion period (as a percent)	50.00%	125.00%
Intrinsic value released	$ 7	$ 6
Aggregate intrinsic value of stock and units outstanding	$ 62	$ 45
Minimum performance units and stock allowed to be outstanding (in shares)	0
Maximum performance units allowed to be outstanding (in shares)	1,132

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made 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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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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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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Intrinsic value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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Intrinsic value of vested award under share-based payment arrangement. Excludes share and unit options.

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