Profit Sharing, Retirement Savings Plans and Defined Benefit Pension Plans - Amounts in Accumulated Other Comprehensive Loss, Not Yet Recognized (Details) - Pension Plan - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Unrecognized net prior service costs	$ 4.7	$ 4.8
Unrecognized net actuarial loss	192.5	178.1
Total	197.2	182.9
U.S.
Defined Benefit Plan Disclosure [Line Items]
Unrecognized net prior service costs	0.2	0.1
Unrecognized net actuarial loss	48.9	47.3
Total	49.1	47.4
International
Defined Benefit Plan Disclosure [Line Items]
Unrecognized net prior service costs	4.5	4.7
Unrecognized net actuarial loss	143.6	130.8
Total	$ 148.1	$ 135.5