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Stock Option Plans - Additional information (Detail) - USD ($) $ / shares in Units, $ in Millions				3 Months Ended
	Mar. 15, 2022	Feb. 01, 2022	Mar. 16, 2021	Mar. 31, 2022	Mar. 31, 2021
Stock Option Plans [Line Items]
Compensation expense related to stock option grants				$ 5.7	$ 3.7
Total intrinsic value of options exercised				77.4	$ 48.4
Total unrecognized compensation cost related to nonvested options				$ 118.4
Weighted average period, years				4 years
Black-Scholes Option Pricing Model [Member]
Stock Option Plans [Line Items]
Weighted average fair value per option for all options				$ 33.18	$ 23.38
Long Term Incentive Plan [Member]
Stock Option Plans [Line Items]
Maximum number of shares available				1,100,000
Shares available for grant				6,500,000
Long Term Incentive Plan [Member] | Officer and Key Employees [Member]
Stock Option Plans [Line Items]
Shares available for grant	1,141,000	1,197,000	1,640,000
Stock options granted, exercise percentage, on the third anniversary date of the grant	34.00%	34.00%	34.00%
Stock options granted, exercise percentage, on the fourth anniversary date of the grant	33.00%	33.00%	33.00%
Stock options granted, exercise percentage, on the fifth anniversary date of the grant	33.00%	33.00%	33.00%
Long Term Incentive Plan [Member] | Maximum [Member]
Stock Option Plans [Line Items]
Minimum exercise price of stock options, percent of fair market value of a share of common stock on the date of grant				100.00%
Maximum period for the exercise of stock options, years				7 years	7 years
Long Term Incentive Plan [Member] | Minimum [Member]
Stock Option Plans [Line Items]
Period of service from grant date stock options awarded not subject to forfeiture				2 years	2 years
Long Term Incentive Plan [Member] | Minimum [Member] | Executive Officer [Member]
Stock Option Plans [Line Items]
Minimum age of employee with not subject to award forfeiture on condition compliance				55 years	55 years
2017 Long Term Incentive Plan [Member]
Stock Option Plans [Line Items]
Number Of Periods Options Expire				7 years

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