Retirement and Deferred Compensation Plans - Schedule of Amounts Recognized in Accumulated Other Comprehensive Loss, Net of Tax (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Total	$ 7.4
Pension plans | United States Plans
Defined Benefit Plan Disclosure [Line Items]
Net loss	15.8	$ 13.7
Total	15.8	13.7
Pension plans | Non-United States Plans
Defined Benefit Plan Disclosure [Line Items]
Net loss	50.5	16.5
Prior service cost	7.8	7.7
Total	$ 58.3	$ 24.2