Derivative Instruments and Hedging Activities (Offsetting Assets and Liabilities) (Details) - Foreign exchange forward contracts - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Derivative Asset, Fair Value, Amount Offset Against Collateral [Abstract]
Gross Amounts of Recognized Assets	$ 43.5	$ 30.5
Gross Amounts Offset in the Condensed Consolidated Balance Sheet	0.0	0.0
Amounts of Assets Presented in the Condensed Consolidated Balance Sheet	43.5	30.5
Derivative Financial Instruments	(23.3)	(21.4)
Cash Collateral Received	0.0	0.0
Net Amount	20.2	9.1
Derivative Liability, Fair Value, Amount Offset Against Collateral [Abstract]
Gross Amounts of Recognized Liabilities	(139.7)	(89.1)
Gross Amounts Offset in the Condensed Consolidated Balance Sheet	0.0	0.0
Amounts of Liabilities Presented in the Condensed Consolidated Balance Sheet	(139.7)	(89.1)
Derivative Financial Instruments	23.3	21.4
Cash Collateral Pledged	0.0	0.0
Net Amount	$ (116.4)	$ (67.7)

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