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Share-based compensation arrangement by share-based payment award, percentage of payroll deduction to purchase common stock.

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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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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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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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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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The weighted average fair value at grant date for nonvested equity-based awards issued 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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The highest quantity of shares an employee can purchase under the plan per period.

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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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Number of shares issued under share-based payment arrangement.

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Purchase price of common stock expressed as a percentage of its fair value.

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Share-Based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended		3 Months Ended		9 Months Ended
	Jul. 31, 2024	Dec. 31, 2022	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Performance-based RSUs
Class Of Stock [Line Items]
Weighted-average grant-date fair value per share (in dollars per share)					$ 8.97
Forfeited (in shares)					3,087,955
Total future compensation expense			$ 49.0		$ 49.0
Remaining weighted-average amortization period					1 year 6 months 21 days
RSUs and PRSUs
Class Of Stock [Line Items]
Vesting period					3 years
Forfeited (in shares)	3,500,000
Share-based compensation			11.0	$ 29.0	$ 59.0	$ 93.0
RSUs
Class Of Stock [Line Items]
Weighted-average grant-date fair value per share (in dollars per share)					$ 8.83
Forfeited (in shares)					2,867,256
Total future compensation expense			$ 47.0		$ 47.0
Remaining weighted-average amortization period					1 year 10 months 9 days
2021 Omnibus Incentive Plan
Class Of Stock [Line Items]
Remaining shares of common stock authorized			84,080,443		84,080,443
2021 Omnibus Incentive Plan \| Time Based Restricted Stock Units
Class Of Stock [Line Items]
Percentage of units granted subject to vesting requirements					44.00%
2021 Omnibus Incentive Plan \| Performance-based RSUs
Class Of Stock [Line Items]
Percentage of units granted subject to vesting requirements					56.00%
Employee Stock Purchase Plan \| Employee Stock
Class Of Stock [Line Items]
Remaining shares available for grant			12,692,122		12,692,122
Number of shares issued					2,268,910
Share-based compensation			$ 0.3		$ 1.2
Employee Stock Purchase Plan \| Employee Stock \| Class A Common Stock
Class Of Stock [Line Items]
Stock plan payment period		6 months
Maximum number of shares, an employee can purchase		1,250
Purchase price of common stock, percent of fair market value		85.00%
Employee Stock Purchase Plan \| Employee Stock \| Minimum \| Class A Common Stock
Class Of Stock [Line Items]
Percentage of payroll deductions		1.00%
Employee Stock Purchase Plan \| Employee Stock \| Maximum \| Class A Common Stock
Class Of Stock [Line Items]
Percentage of payroll deductions		10.00%