Stock-Based Compensation - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares reserved for grant of awards	22,500,000
Shares available for grant under the plan	4,300,000
Share based compensation percentage in annual base salary, min	50.00%
Share based compensation percentage in annual base salary, max	100.00%
Shares issued to non-employee directors	8,800	34,000	40,000
Stock-based compensation expense	$ 30	$ 9	$ 22
stock-based compensation expense, net of tax	$ 21	$ 7	$ 17
Time-based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Performance-based and market-based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Number of RSUs target award vested range maximum	20.00%

Number Of Restricted Stock Units Target Award Vested Range Maximum

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Share Based Compensation Percentage In Annual Base Salary, Max

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Share based compensation percentage in annual base salary, min.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount, after tax, of expense for award under share-based payment arrangement.

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Number of shares issued pursuant to the terms of a deferred compensation arrangement.

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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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Number of shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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