Derivative Instruments and Hedging Activities Open Foreign Currency Contracts (Details) - Cash Flow Hedging - Foreign currency contracts - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Notional Amounts (in U.S. Dollars)	$ 228.1	$ 209.3
Net Unrealized Gain (Loss)	(3.5)	(2.3)
Australian Dollar
Derivative [Line Items]
Notional Amounts (in U.S. Dollars)	34.2	26.0
Net Unrealized Gain (Loss)	0.1	(0.5)
Canadian Dollar
Derivative [Line Items]
Notional Amounts (in U.S. Dollars)	176.7	169.8
Net Unrealized Gain (Loss)	(3.7)	(2.8)
Mexican Peso
Derivative [Line Items]
Notional Amounts (in U.S. Dollars)	17.2	13.5
Net Unrealized Gain (Loss)	$ 0.1	$ 1.0