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Share-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions		3 Months Ended	12 Months Ended
	Jan. 01, 2018	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate intrinsic value of stock options exercised			$ 59.1	$ 63.7	$ 88.2
Total fair value of stock options vested			$ 13.7	$ 12.9	11.8
Share-based compensation arrangement by share-based payment award, options, outstanding (in shares)			3,352	3,950
Stock Options Granted Prior Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual term of stock options			7 years
Beginning in 2018 Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual term of stock options			10 years
Restricted Stock Granted Prior Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cliff vesting period			4 years
Non Employee Directors Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cliff vesting period			2 years
Performance Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected future pre-tax compensation expense, nonvested stock options			$ 4.0
Nonvested stock options outstanding			300
Weighted average period to recognize expected future pre-tax compensation expense (in years)			1 year
Weighted average fair value, per share			$ 121.91
Nonvested stock options, granted (in shares)			81
Performance Restricted Stock Units | Officers And Key Management Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cliff vesting period		3 years
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			Restricted stock granted to employees prior to 2018 generally vests four years after the grant date (cliff vesting) and is subject to accelerated vesting due to certain events, including doubling of the grant price of the Company’s common stock as of the close of business during any five consecutive trading days.
Expected future pre-tax compensation expense, nonvested restricted shares			$ 28.0
Nonvested stock options outstanding			400
Weighted average period to recognize expected future pre-tax compensation expense (in years)			2 years
Total fair value of vested restricted stock			$ 28.6	$ 14.4	$ 25.2
Weighted average fair value, per share			$ 122.60	$ 80.27
Nonvested stock options, granted (in shares)			153
Restricted Stock | Stock Options Granted Prior Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, vesting rate	33.33%
Restricted Stock | Beginning in 2018 Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, vesting rate	33.33%
Restricted Stock | Share-based Payment Arrangement, Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, vesting rate	33.33%
Non Vested Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected future pre-tax compensation expense, nonvested stock options			$ 14.0
Nonvested stock options outstanding			1,300
Weighted average period to recognize expected future pre-tax compensation expense (in years)			2 years
Non Vested Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			Restricted stock granted to non-employee directors generally vests two years after the grant date (cliff vesting) and is subject to accelerated vesting due to certain events, including doubling of the grant price of the Company’s common stock as of the close of business during any five consecutive trading days.
Non Vested Restricted Stock | Stock Options Granted Prior Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, vesting rate	33.33%		25.00%
Non Vested Restricted Stock | Beginning in 2018 Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, vesting rate	33.33%		25.00%
Non Vested Restricted Stock | Share-based Payment Arrangement, Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, vesting rate	33.33%		25.00%
Non Vested Restricted Stock | Share-based Payment Arrangement, Tranche Four
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, vesting rate			25.00%
Minimum | Performance Restricted Stock Units | Officers And Key Management Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, vesting rate		0.00%
Maximum | Performance Restricted Stock Units | Officers And Key Management Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, vesting rate		200.00%

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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 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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