Stock-Based Compensation - Summary of Stock Option Activity for Company's Stock Option Plans (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Number of Shares
Beginning balance (in shares)	42,397,911
Granted (in shares)	4,059,936
Exercised (in shares)	(773,056)
Forfeited (in shares)	(1,683,631)
Ending balance (in shares)	44,001,160	42,397,911
Weighted Average Exercise Price (per share)
Beginning balance (in USD per share)	$ 6.11
Granted (in USD per share)	7.35
Exercised (in USD per share)	0.90
Forfeited (in USD per share)	11.06
Ending balance (in USD per share)	$ 6.13	$ 6.11
Stock Options Outstanding
Weighted Average Remaining Contractual Term (in years)	6 years 6 months 21 days	7 years 4 months 17 days
Aggregate Intrinsic Value (in millions)	$ 108	$ 105
Exercisable (in shares)	33,366,714
Exercisable (in USD per share)	$ 5.17
Stock Options outstanding, Weighted average remaining contractual term (years)	6 years 1 month 9 days
Exercisable, intrinsic value	$ 99

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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Gross number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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