Derivative Financial Instruments (Derivative Instruments In Cash Flow Hedging Relationships Gain (Loss)) (Details) - Foreign exchange contract - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income on derivatives (instruments not designated as hedging instruments)	$ 43.6	$ 0.1	$ 1.6
Revenue
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income on derivatives (instruments not designated as hedging instruments)	0.9		0.0
Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income on derivatives (instruments not designated as hedging instruments)	(0.3)	0.0	0.0
Other (expense), net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income on derivatives (instruments not designated as hedging instruments)	43.0	0.1	1.6
Cash flow hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified from accumulated OCI into incom	(135.4)	(165.7)	(93.6)
Gain (loss) recognized in income (ineffective portion and amount excluded from effectiveness testing)	23.6	(13.2)	(16.9)
Cash flow hedging \| Revenue
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified from accumulated OCI into incom	(39.3)		0.0
Gain (loss) recognized in income (ineffective portion and amount excluded from effectiveness testing)	9.5		0.0
Cash flow hedging \| Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified from accumulated OCI into incom	5.3		0.0
Gain (loss) recognized in income (ineffective portion and amount excluded from effectiveness testing)	(9.0)		0.0
Cash flow hedging \| Selling, general and administrative expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified from accumulated OCI into incom	0.8
Gain (loss) recognized in income (ineffective portion and amount excluded from effectiveness testing)	0.1
Cash flow hedging \| Other (expense), net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified from accumulated OCI into incom	(102.2)	(165.7)	(93.6)
Gain (loss) recognized in income (ineffective portion and amount excluded from effectiveness testing)	$ 23.0	$ (13.2)	$ (16.9)

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- Definition

The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4D
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624177-113959

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- Definition

The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 25
-Section 50
-Paragraph 1
-Subparagraph (a)(1),(2)
-URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986

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- Definition

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

+ References

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