Share-Based Compensation - Narrative (Details) - USD ($)		12 Months Ended
	Mar. 14, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense		$ 33,947,000	$ 34,798,000	$ 30,294,000
Tax benefit from share-based compensation		8,300,000	$ 8,200,000	$ 7,100,000
Nonvested awards, total compensation cost not yet recognized		$ 87,800,000
Nonvested awards, total compensation cost not yet recognized, period for recognition		6 years
Restricted stock granted in period (in shares)		876,296	2,314,542	1,218,613
Restricted stock granted in period, weighted average grant date fair value (usd per share)		$ 34.20	$ 32.89	$ 30.07
Restricted stock, vested in period, total fair value		$ 49,500,000	$ 52,000,000	$ 35,000,000
Class B
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized under stock incentive plan (in shares)		36,100,000
Number of shares available for grant under stock incentive plan (in shares)		3,800,000
Class B Common Stock Bonus
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award requisite service period		3 years
Restricted stock granted in period (in shares)		375,796
Class B Common Stock Bonus | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award requisite service period		3 years
Class B Common Stock Bonus | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award requisite service period		10 years
Class B Common Stock Key Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award requisite service period		10 years
Restricted stock granted in period (in shares)		414,500
U.K. Subsidiary Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		5 years
Restricted stock granted in period (in shares)		86,000
Compensation and related expense		$ 0	$ 700,000	$ 9,400,000
U.K. Subsidiary Stock Plan | Class B
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant under stock incentive plan (in shares)		79,874
Restricted stock granted in period (in shares)	1,183,066
Restricted stock awarded in period (in shares)	318,807
U.K. Subsidiary Stock Plan | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
U.K. Subsidiary Stock Plan | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		5 years