Maximum share limitation for each share granted.

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Percentage of restricted stock and restricted stock units awarded for performance based vesting.

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Percentage of restricted stock and restricted stock units awarded for service based vesting.

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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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Amount of noncash expense for award of restricted stock or unit under share-based payment arrangement.

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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 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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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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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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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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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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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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Equity-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock expense	$ 43.3	$ 33.4	$ 31.8
Stock Compensation Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of restricted stock and restricted stock units awarded for service based vesting	50.00%
Percentage of restricted stock and restricted stock units awarded for performance based vesting	50.00%
Award vesting period (years)	4 years
Non Employee Director Restricted Equity Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of restricted stock and restricted stock units awarded for service based vesting	100.00%
Award vesting period (years)	1 year
Restricted Stock and Restricted Stock Unit
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total fair value of restricted stock awards vested	$ 59.8	$ 52.2	$ 18.2
RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average grant-date fair value of granted	$ 128.62	$ 77.2	$ 49.48
Unrecognized compensation cost related to unvested restricted stock	$ 70.3
Unrecognized compensation cost related to unvested award, period of recognition	2 years 7 months 6 days
Number of restricted units granted in the period	515,724
Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of restricted units granted in the period	144,788
2020 Stock Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Maximum shares available for grant	4,500,000
Shares available for issuance	4,085,825
2020 Stock Incentive Plan \| Stock Option, Stock Appreciation Right, Restricted Stock, or Restricted Stock Unit
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted share count against share available	1
2020 Stock Incentive Plan \| Stock Options and Stock Appreciation Rights \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award term (years)	7 years