Financial Instruments and Risk Management Financial Instruments and Risk Management (Effect Of Derivative Instruments on the Condensed Consolidated Statements of Comprehensive Earnings Derivatives in Cash Flow Hedging Relationships) (Details) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Derivative [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	$ 263.4	$ (2.7)
Cash Flow Hedging | Foreign currency forward contracts
Derivative [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	5.6	$ (42.8)
Cash Flow Hedging | Interest rate swaps
Derivative [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	$ (0.8)