Financial Instruments and Risk Management (Effect of Derivative Instruments on the Consolidated Statements of Operations Derivatives in Fair Value Hedging Relationships) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Fair Value Hedges Recognized in Earnings	$ 39.3	$ (10.1)	$ (17.3)
Other income | Foreign Exchange Contract
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Financial Instruments Not Designated as Hedging Instruments:	39.3	(10.1)	(17.3)
Fair value hedging relationships | Interest Expense [Member] | Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	0.0	22.1	18.7
Fair value hedging relationships | Interest Expense [Member] | Senior Notes 2023 3.125%
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Fair Value Hedges Recognized in Earnings	$ 0.0	$ (22.1)	$ (18.7)