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Retirement Plans - Narrative (Details) - Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits - USD ($)
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Defined Contribution Plan Disclosure [Line Items]      
Deferred compensation plan expense $ 5,799,000 $ 4,146,000  
DCP participant deferrals 58,000 1,533,000  
Contributions by employer $ 0 $ 0  
Class B Common Stock      
Defined Contribution Plan Disclosure [Line Items]      
Phantom shares issuable (in shares) 16,847,673   17,364,980
Shares reserved for future issuance (in shares) 4,401,185