Treasury Stock - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Equity, Class of Treasury Stock [Line Items]
Treasury stock, shares repurchased value		$ 123,224,000	$ 72,719,000
Treasury stock, shares	8,684,000	8,684,000
Treasury stock, cost	$ 782,104,000	$ 782,104,000
Class A | Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Shares repurchased program expiration date	Apr. 29, 2023
Stock authorized to repurchase by board of directors	$ 800,000,000.0
Treasury stock, shares repurchased	0	444,769	521,843
Shares repurchased, average price per share		$ 139.12	$ 139.35
Treasury stock, shares repurchased value		$ 61,900,000	$ 72,700,000
Treasury stock, shares	5,674,226
Shares repurchased, average price per share	$ 104.13
Treasury stock, cost	$ 590,900,000
Stock remaining available for repurchase	$ 209,100,000
Class A | Tender Offer
Equity, Class of Treasury Stock [Line Items]
Treasury stock, shares repurchased		432,313
Shares repurchased, average price per share		$ 140.00
Treasury stock, shares repurchased value		$ 61,300,000
Expenses and fees related to tender offer		$ 800,000
Tender offer expiration period		2020-09