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Derivative Instruments and Hedging Activities (Fair Value Of Derivative Instruments) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Derivative [Line Items]
Derivative asset, fair value	$ 21.5		$ 21.5		$ 7.8
Derivative liability, fair value	15.0		15.0		17.0
Foreign Exchange Contract [Member] \| Designated as Hedging Instrument [Member] \| Other Current Assets [Member]
Derivative [Line Items]
Derivative asset, fair value	1.3		1.3		0.0
Foreign Exchange Contract [Member] \| Designated as Hedging Instrument [Member] \| Other Current Liabilities [Member]
Derivative [Line Items]
Derivative liability, fair value	2.5		2.5		1.2
Foreign Exchange Contract [Member] \| Not Designated as Hedging Instrument [Member] \| Other Current Assets [Member]
Derivative [Line Items]
Derivative asset, fair value	8.6		8.6		7.8
Foreign Exchange Contract [Member] \| Not Designated as Hedging Instrument [Member] \| Other Current Liabilities [Member]
Derivative [Line Items]
Derivative liability, fair value	8.1		8.1		11.0
Interest Rate Contract [Member] \| Designated as Hedging Instrument [Member] \| Other Noncurrent Assets [Member]
Derivative [Line Items]
Derivative asset, fair value	0.0		0.0		0.0
Interest Rate Contract [Member] \| Designated as Hedging Instrument [Member] \| Other Noncurrent Liabilities [Member]
Derivative [Line Items]
Derivative liability, fair value	4.4		4.4		$ 4.8
Cross Currency Interest Rate Contract [Member] \| Designated as Hedging Instrument [Member] \| Other Noncurrent Assets [Member]
Derivative [Line Items]
Derivative asset, fair value	11.6		11.6
Cross Currency Interest Rate Contract [Member] \| Designated as Hedging Instrument [Member] \| Other Noncurrent Liabilities [Member]
Derivative [Line Items]
Derivative liability, fair value	0.0		0.0
Other Nonoperating Income (Expense) [Member] \| Foreign Exchange Contract [Member] \| Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative instruments not designated as hedging instruments, gain (loss), net	$ (3.8)	$ 18.1	$ 2.4	$ 21.9