Derivative Instruments and Hedging Activities (Offsetting Assets and Liabilities) (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Derivative Asset, Fair Value, Amount Offset Against Collateral [Abstract]
Gross Amounts of Recognized Assets	$ 12.1	$ 30.5
Derivative Liability, Fair Value, Amount Offset Against Collateral [Abstract]
Gross Amounts of Recognized Liabilities	(128.3)	(89.1)
Foreign exchange forward contracts
Derivative Asset, Fair Value, Amount Offset Against Collateral [Abstract]
Gross Amounts of Recognized Assets	12.1	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	12.1	30.5
Derivative Financial Instruments	(11.4)	(21.4)
Cash Collateral Received	0.0	0.0
Net Amount	0.7	9.1
Derivative Liability, Fair Value, Amount Offset Against Collateral [Abstract]
Gross Amounts of Recognized Liabilities	(128.3)	(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	(128.3)	(89.1)
Derivative Financial Instruments	11.4	21.4
Cash Collateral Pledged	0.0	0.0
Net Amount	$ (116.9)	$ (67.7)

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Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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