Derivative Instruments and Hedging Activities Open Foreign Currency Contracts (Details) - Cash Flow Hedging - Foreign currency contracts - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Derivative [Line Items]
Notional Amounts (in U.S. Dollars)	$ 220.3	$ 209.3
Net Unrealized Gain (Loss)	(2.5)	(2.3)
Australian Dollar
Derivative [Line Items]
Notional Amounts (in U.S. Dollars)	18.2	26.0
Net Unrealized Gain (Loss)	0.2	(0.5)
Canadian Dollar
Derivative [Line Items]
Notional Amounts (in U.S. Dollars)	169.7	169.8
Net Unrealized Gain (Loss)	(3.1)	(2.8)
Mexican Peso
Derivative [Line Items]
Notional Amounts (in U.S. Dollars)	32.4	13.5
Net Unrealized Gain (Loss)	$ 0.4	$ 1.0