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Derivative Instruments and Hedging Activities (Fair Value Of Derivative Instruments) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Derivative [Line Items]
Derivative asset, fair value	$ 34.8		$ 24.7
Derivative liability, fair value	7.7		6.6
Foreign currency contracts (1) \| Designated as Hedging Instrument \| Other current assets
Derivative [Line Items]
Derivative asset, fair value	0.8		1.9
Foreign currency contracts (1) \| Designated as Hedging Instrument \| Other current liabilities
Derivative [Line Items]
Derivative liability, fair value	3.8		0.4
Foreign currency contracts (1) \| Not Designated as Hedging Instrument \| Other current assets
Derivative [Line Items]
Derivative asset, fair value	9.4		5.1
Foreign currency contracts (1) \| Not Designated as Hedging Instrument \| Other current liabilities
Derivative [Line Items]
Derivative liability, fair value	3.9		6.2
Interest rate swap contract \| Designated as Hedging Instrument \| Other noncurrent assets
Derivative [Line Items]
Derivative asset, fair value			17.7
Interest rate swap contract \| Designated as Hedging Instrument \| Other noncurrent liabilities
Derivative [Line Items]
Derivative liability, fair value			$ 0.0
Cross currency swap contract \| Designated as Hedging Instrument \| Other noncurrent assets
Derivative [Line Items]
Derivative asset, fair value	24.6
Cross currency swap contract \| Designated as Hedging Instrument \| Other noncurrent liabilities
Derivative [Line Items]
Derivative liability, fair value	0.0
Other expense, net \| Foreign currency contracts (1) \| Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative instruments not designated as hedging instruments, gain (loss), net	$ 8.8	$ 6.1