Derivative Financial Instruments - Impact of Changes in Fair Values of Derivatives Designated as Cash Flow Hedges on OCI, AOCL and Earnings (Details) - Cross-currency swap - Cash flow hedge - Designated as hedging instrument - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Gain Recognized in OCI	$ 1.4	$ 7.3
Interest and Other Expenses (Income), Net
Derivative [Line Items]
Gain Reclassified from AOCL into Income	$ 1.1	$ 8.3