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Pension Plans - Additional Information (Details) - USD ($)
$ in Millions
 1 Months Ended 12 Months Ended
Dec. 31, 2021
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]        
Net benefit surplus / (obligation) $ 11.8 $ 22.5 $ 11.8  
Benefits paid   15.3 15.4  
Contributions from employer   0.4 18.2  
Total (credit) / expense for defined benefit plans   0.1 (1.9) $ (3.9)
Defined benefit pension credit   0.1 2.3 4.3
Defined benefit plan, expected amortization, next fiscal year   12.7    
Defined benefit plan, expected amortization of gain (loss), next fiscal year   13.1    
Defined benefit plan, expected amortization of prior service credit   0.4    
Expected future employer contributions, next fiscal year 0.0 0.0 0.0  
Selling, General and Administrative Expenses        
Defined Benefit Plan Disclosure [Line Items]        
Total (credit) / expense for defined benefit plans   0.2 0.4 0.4
U.K.        
Defined Benefit Plan Disclosure [Line Items]        
Net benefit surplus / (obligation) 13.7 27.0 13.7  
Benefits paid 12.7 12.8 13.1  
Contributions from employer   0.4 18.2  
Total (credit) / expense for defined benefit plans   $ (2.8) (1.6) (3.3)
U.K. | Defined Benefit Plan, Equity Securities        
Defined Benefit Plan Disclosure [Line Items]        
Plan assets, target allocation percentage   25.00%    
U.S. / other        
Defined Benefit Plan Disclosure [Line Items]        
Net benefit surplus / (obligation) $ (1.9) $ (4.5) (1.9)  
Benefits paid   2.5 2.3  
Contributions from employer   0.0 0.0  
Total (credit) / expense for defined benefit plans   2.9 $ (0.3) $ (0.6)
Expected future employer contributions, next fiscal year   $ 3.5