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Stock Based Awards and Other Equity Instruments - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Capitalized stock based compensation as website development costs	$ 2	$ 3	$ 7	$ 10
Income tax benefits from exercise or settlement of stock-based awards	$ 4	$ 6	$ 7	20
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period			4 years
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period			4 years
Closing stock price	$ 22.08		$ 22.08
Total intrinsic value				8
Term of stock options, granted			10 years
2018 Plan | Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total fair value of stock options vested			$ 15	$ 19

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Income tax benefits associated with exercise or settlement of stock based awards.

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Amount of cost capitalized for award under share-based payment arrangement.

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-Publisher FASB
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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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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Price of a single share of a number of saleable stocks of a company.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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