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Retirement Benefit Plans - Narrative (Details)
€ in Millions, $ in Millions
 1 Months Ended 3 Months Ended 12 Months Ended
Jan. 31, 2025
EUR (€)
Dec. 31, 2024
USD ($)
plan
Dec. 31, 2023
USD ($)
Dec. 31, 2025
Dec. 31, 2024
USD ($)
plan
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]                
Cash contributions and payments         $ 24.6 $ 27.1 $ 11.2  
Actuarial gains (losses)   $ 1.3 $ (22.3)          
Percentage of employees covered by four largest plans   83.00% 83.00%   83.00% 83.00%    
Number of plans frozen | plan   3     3      
Return on plan assets         $ 32.1 $ 35.6 29.4  
International Plans                
Defined Benefit Plan Disclosure [Line Items]                
Recognition of net actuarial gains         (0.6) (12.4) 6.6  
U.S. Plans                
Defined Benefit Plan Disclosure [Line Items]                
Recognition of net actuarial gains         1.3 (9.2) (22.6)  
Pension Plan                
Defined Benefit Plan Disclosure [Line Items]                
Cash contributions and payments         24.6 27.1    
Actuarial gains (losses)         0.7 (21.6) $ (16.0)  
Current liabilities   $ 7.0 $ 7.2   7.0 7.2    
Pension plan with project benefit obligation in excess of plan assets, projected benefit obligation   534.9     534.9      
Pension plan with project benefit obligation in excess of plan assets, accumulated benefit obligations   527.6     527.6      
Pension plan with project benefit obligation in excess of plan assets, fair value of plan assets   370.3     370.3      
Defined benefit plan, plan with accumulated benefit obligation in excess of plan assets, projected benefit obligation   526.3     526.3      
Defined benefit plan, plan with accumulated benefit obligation in excess of plan assets, accumulated benefit obligations   521.4     521.4      
Defined benefit plan, plan with accumulated benefit obligation in excess of plan assets, fair value of plan assets   361.9     361.9      
Pension accumulated benefit obligation   528.0 567.0   $ 528.0 567.0    
Percentage decrease in value (as a percent)         1.40%      
Defined benefit plan, plan assets, amount   $ 370.9 $ 396.0   $ 370.9 396.0    
Pension Plan | International Plans                
Defined Benefit Plan Disclosure [Line Items]                
Cash contributions and payments         4.1 8.0    
Actuarial gains (losses)         $ 14.9 $ (10.8)    
Benefit obligation, discount rate (as a percent)   5.43% 4.48%   5.43% 4.48% 4.81% 1.80%
Current liabilities   $ 2.1 $ 2.4   $ 2.1 $ 2.4    
Defined benefit plan, plan assets, amount   175.9 196.8   175.9 196.8 $ 185.5  
Pension Plan | International Plans | Subsequent Event                
Defined Benefit Plan Disclosure [Line Items]                
Employer contribution toward insurance buy-in contract | € € 6              
Pension Plan | International Plans | Fair Value, Recurring                
Defined Benefit Plan Disclosure [Line Items]                
Defined benefit plan, plan assets, amount   $ 173.5 $ 164.0   173.5 164.0    
Pension Plan | U.S. Plans                
Defined Benefit Plan Disclosure [Line Items]                
Cash contributions and payments         20.5 19.1    
Actuarial gains (losses)         $ 12.6 $ (10.8)    
Benefit obligation, discount rate (as a percent)   5.83% 5.40%   5.83% 5.40% 5.64% 3.07%
Benefit cost, discount rate (as a percent)         5.40%      
Expected long-term return on plan assets (as a percent)         3.94%      
Current liabilities   $ 4.9 $ 4.8   $ 4.9 $ 4.8    
Defined benefit plan, plan assets, amount   $ 195.0 $ 199.2   195.0 199.2 $ 201.6  
Pension Plan | U.S. Plans | Forecast                
Defined Benefit Plan Disclosure [Line Items]                
Benefit cost, discount rate (as a percent)       5.83%        
Expected long-term return on plan assets (as a percent)       4.30%        
Pension Plan | Discount Rate Increase                
Defined Benefit Plan Disclosure [Line Items]                
Recognition of net actuarial gains         28.7 17.6 243.2  
Pension Plan | Return on Plan Assets vs. Expectation                
Defined Benefit Plan Disclosure [Line Items]                
Recognition of net actuarial gains         26.8   220.6  
Pension Plan | Experience Losses Impact                
Defined Benefit Plan Disclosure [Line Items]                
Recognition of net actuarial gains         $ 1.2 $ 10.3 $ 33.0  
Pension Plan | Discount Rate in Basis Points | International Plans                
Defined Benefit Plan Disclosure [Line Items]                
Increase (decrease) to discount rate (basis points)         0.0095 0.0033 0.0301  
Pension Plan | Discount Rate in Basis Points | U.S. Plans                
Defined Benefit Plan Disclosure [Line Items]                
Increase (decrease) to discount rate (basis points)         0.0043 0.0024 0.0257  
Pension Plan | Changes in Mortality                
Defined Benefit Plan Disclosure [Line Items]                
Recognition of net actuarial gains           $ 6.0    
Pension Plan | Other Actuarial Assumptions                
Defined Benefit Plan Disclosure [Line Items]                
Recognition of net actuarial gains           $ 0.3 $ 0.2  
Pension Plan | Inflation Impact                
Defined Benefit Plan Disclosure [Line Items]                
Recognition of net actuarial gains             $ 5.4