Comprehensive Income and Shareholders' Equity (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016	Aug. 11, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance			$ 21,539.3	$ 21,350.2
Other comprehensive income (loss) before reclassifications			441.6
Amounts reclassified from accumulated other comprehensive items			11.8
Total other comprehensive items	$ 73.2	$ (72.6)	453.4	(157.4)
Balance	24,701.8	21,658.6	24,701.8	21,658.6
Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance			(2,343.4)
Other comprehensive income (loss) before reclassifications			452.3
Total other comprehensive items			452.3
Balance	(1,891.1)		(1,891.1)
Unrealized Gains on Available-for-Sale Investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance			0.9
Other comprehensive income (loss) before reclassifications			0.6
Amounts reclassified from accumulated other comprehensive items			(1.0)
Total other comprehensive items			(0.4)
Balance	0.5		0.5
Unrealized Losses on Hedging Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance			(57.1)
Amounts reclassified from accumulated other comprehensive items			5.6
Total other comprehensive items			5.6
Balance	(51.5)		(51.5)
Pension and Other Postretirement Benefit Liability Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance			(236.7)
Other comprehensive income (loss) before reclassifications			(11.3)
Amounts reclassified from accumulated other comprehensive items			7.2
Total other comprehensive items			(4.1)
Balance	(240.8)		(240.8)
Accumulated Other Comprehensive Items [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance			(2,636.3)	(1,997.3)
Total other comprehensive items			453.4	(157.4)
Balance	(2,182.9)	(2,154.7)	(2,182.9)	(2,154.7)
Common Stock [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance			415.1	411.9
Balance	$ 428.0	$ 415.0	$ 428.0	$ 415.0
Issuance of shares (in shares)			10.1
Shares Issued, Price Per Share					$ 171.00