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Defined Contribution and Defined Benefit Retirement Plans - Funded Status of Defined Benefit Pension Plans (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Amounts recognized in the balance sheet:      
Accrued pension costs, noncurrent $ (128.6) $ (287.4)  
Pension Plans Defined Benefit [Member]      
Change in plan assets:      
Fair value of plan assets at beginning of the year 486.0    
Fair value of plan assets at end of year 395.6 486.0  
U S | Pension Plans Defined Benefit [Member]      
Change in projected benefit obligations (PBO):      
Benefit obligations at beginning of the year 17.7 19.4  
Interest cost 0.4 0.5 $ 0.6
Actuarial losses (gains) (3.9) (0.6)  
Settlements   (0.5)  
Benefits paid (1.0) (1.1)  
Benefit obligations at end of the year 13.2 17.7 19.4
Change in plan assets:      
Fair value of plan assets at beginning of the year 15.9 16.1  
Actual return on plan assets (3.2) 0.5  
Employer contributions 0.3 0.4  
Settlements   (0.5)  
Benefits paid (1.0) (1.1)  
Fair value of plan assets at end of year 12.0 15.9 16.1
Funded status (1.2) (1.8)  
Amounts recognized in the balance sheet:      
Accrued pension costs, noncurrent (1.2) (1.8)  
Total (1.2) (1.8)  
Amount recognized in accumulated other comprehensive loss, Actuarial losses 9.2 9.8  
Accumulated benefit obligations (ABO) 13.2 17.7  
Foreign Pension Plans Defined Benefit | Pension Plans Defined Benefit [Member]      
Change in projected benefit obligations (PBO):      
Benefit obligations at beginning of the year 748.1 846.7  
Service cost 11.3 14.7 13.3
Interest cost 10.5 8.2 10.0
Participant contributions 1.7 2.0  
Actuarial losses (gains) (195.8) (45.4)  
Settlements (1.2)    
Change in currency exchange rates (50.3) (55.0)  
Benefits paid (21.5) (23.1)  
Benefit obligations at end of the year 502.8 748.1 846.7
Change in plan assets:      
Fair value of plan assets at beginning of the year 470.1 481.8  
Actual return on plan assets (49.5) 17.7  
Employer contributions 15.0 18.7  
Participant contributions 1.7 2.0  
Settlements (0.3)    
Change in currency exchange rates (31.0) (27.0)  
Benefits paid (21.5) (23.1)  
Fair value of plan assets at end of year 383.6 470.1 $ 481.8
Funded status (119.2) (278.0)  
Amounts recognized in the balance sheet:      
Noncurrent pension asset 8.2 7.6  
Accrued pension costs, noncurrent (127.4) (285.6)  
Total (119.2) (278.0)  
Amount recognized in accumulated other comprehensive loss, Actuarial losses 85.4 233.3  
Amount recognized in accumulated other comprehensive loss, Prior service cost 0.4 0.4  
Amount recognized in accumulated other comprehensive loss, Total 85.8 233.7  
Accumulated benefit obligations (ABO) $ 488.0 $ 723.7