Fair Value Measurements, Derivative Instruments, Gains & Losses (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jul. 01, 2017	Jul. 02, 2016	Jul. 01, 2017	Jul. 02, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) in Currency Translation Adjustment on Net Investment Hedge			$ (329.0)	$ (43.0)
Foreign Currency Exchange Contracts [Member] \| Cost of Sales [Member] \| Derivatives Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Effective Portion of Gain (Loss) on Derivative, Net	$ (0.7)	$ (7.5)	(2.1)	(15.0)
Foreign Currency Exchange Contracts [Member] \| Other Expense [Member] \| Derivatives Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Effective Portion of Gain (Loss) on Derivative, Net	52.1	(20.7)	71.3	(44.1)
Fair Value Hedging [Member] \| Interest Rate Swaps [Member] \| Other Expense [Member] \| Derivatives Designated as Fair Value Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Effective Portion of Gain (Loss) on Derivative, Net	0.5	4.6	2.9	12.1
Ineffective Portion of Gain (Loss) on Derivative, Net	$ (2.1)	$ 0.5	$ (5.1)	$ 0.5

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5618551-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (a),(c),(d),(e)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959

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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, before tax, of increase (decrease) in the cumulative translation adjustment from gain (loss) on foreign currency derivatives that are designated as, and are effective as, economic hedges of a net investment in a foreign entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 20
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=64808268&loc=d3e32211-110900

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