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Retirement Plans (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2019
USD ($)
plan
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Defined Benefit Plan Disclosure [Line Items]      
Contributory defined benefit pension plans | plan 5    
United States Retirement Plans of US Entity, Defined Contribution [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined contribution plan, cost recognized $ 37.1 $ 28.8 $ 27.8
Foreign Retirement Plans, Defined Contribution [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined contribution plan, cost recognized 35.2 30.7 $ 25.5
Foreign Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Projected benefit obligations, benefit obligation, end of year 421.6 365.6  
Defined Benefit Plan, Plan Assets, Amount 432.3 384.3  
Defined Benefit Plan, Funded (Unfunded) Status of Plan 10.7 18.7  
Change in plan assets:      
Defined Benefit Plan, Accumulated Benefit Obligation 421.2 365.6  
Foreign Plan [Member]      
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]      
Assets for Plan Benefits, Defined Benefit Plan 23.2 25.2  
Pension assets (included in Other assets) (12.5) (6.5)  
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax $ 103.8 $ 84.7