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Retirement Plans - Narrative (Details) - USD ($)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]      
Defined contribution plan, cost recognized $ 27,599,000 $ 25,595,000 $ 23,641,000
Defined benefit plan, voluntary contribution $ 1,506,000 9,892,000  
Corridor amount 10.00%    
Net unrecognized actuarial losses expected to be recognized in 2023 $ 11,850,000    
Net unrecognized actuarial losses expected to be recognized in 2023, net of tax 8,782,000    
Net periodic benefit cost (income), non-service cost $ (1,499,000) (3,472,000) $ (569,000)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Other Nonoperating Income (Expense)    
U.K Plan      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate used to compute periodic benefit cost 5.06%    
Expected long-term rates of return on plans' assets in next fiscal year 2.40%    
U.S.      
Defined Benefit Plan Disclosure [Line Items]      
Defined benefit plan, voluntary contribution $ 0 $ 9,000,000  
Increase (decrease) in projected benefit obligation $ (1,393,852)    
Discount rate used to compute periodic benefit cost 5.05%    
Expected long-term rates of return on plans' assets in next fiscal year 4.80%