Stock-based Compensation - Additional Information (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award Line Items
Percentage of employees can satisfied the service condition	33.33%
Minimum period of employees need to continued employment	3 years
Number of common stock available for issuance	10.5
Shares issued	0.4	0.4
Stock-based compensation expense	$ 4	$ 5
RSUs
Share Based Compensation Arrangement By Share Based Payment Award Line Items
Shares granted	0.2	0.3
PSUs
Share Based Compensation Arrangement By Share Based Payment Award Line Items
Shares granted	0.2	0.2
RSUs and PSUs
Share Based Compensation Arrangement By Share Based Payment Award Line Items
Shares granted	0.3	0.5
Unrecognized compensation expense	$ 6
Unrecognized stock-based compensation expense, weighted-average recognition period	1 year 4 months 24 days
Shares issued	0.4	0.4

Percentage of employees can satisfied the service condition.

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- Definition

Share-based compensation arrangement by share-based payment award, minimum period of employees need to continued employment.

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- Definition

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

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Aggregate number of common shares reserved for future issuance.

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

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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- Definition

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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- Definition

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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