Financial Instruments and Risk Management (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Asset	$ 2.8	$ 5.6
Liability	6.0	3.8
Prepaid expenses and other | Derivatives designated as hedges: | Foreign exchange forward contracts
Derivative [Line Items]
Asset		0.0
Prepaid expenses and other | Derivatives not designated as hedges: | Foreign exchange forward contracts
Derivative [Line Items]
Asset	2.8	5.6
Accounts payable | Derivatives designated as hedges: | Foreign exchange forward contracts
Derivative [Line Items]
Liability		0.6
Accounts payable | Derivatives not designated as hedges: | Foreign exchange forward contracts
Derivative [Line Items]
Liability	$ 6.0	$ 3.2