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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, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Capitalized stock based compensation as website development costs	$ 4	$ 2	$ 10	$ 8
Income tax benefits from exercise or settlement of stock-based awards	2	$ 2	9	8
Unrecognized compensation expense	$ 275		$ 275
Weighted average period remaining (in years)			2 years 8 months 12 days
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period			4 years
Total fair value of RSUs vested			$ 89	$ 89
Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average grant date fair value			$ 13.37	$ 10.32
Vesting period			4 years
Closing stock price	$ 14.49		$ 14.49
Total intrinsic value			$ 0	$ 0
Term of stock options, granted			10 years
Total fair value of stock options vested			$ 6	$ 6

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