Segment Reporting (Financial Information For Reportable Operating Segments And All Other Segments) (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2017	Jan. 01, 2017	Oct. 01, 2017
Segment Reporting Information [Line Items]
Gain (Loss) on Disposition of Business	$ 501.2	$ 0.0
Total net revenues	6,073.7	5,732.9
Depreciation and amortization expenses	258.8	249.7
Income from equity investees	89.4	84.4
Operating income/(loss)	1,116.1	1,132.6
Operating Segments [Member]
Segment Reporting Information [Line Items]
Total net revenues	6,073.7	5,732.9
Depreciation and amortization expenses	220.6	212.1
Income from equity investees	89.4	84.4
Operating income/(loss)	1,428.6	1,418.5
Operating Segments [Member] | Americas [Member]
Segment Reporting Information [Line Items]
Total net revenues	4,265.8	3,991.4
Depreciation and amortization expenses	158.0	152.4
Income from equity investees	0.0	0.0
Operating income/(loss)	979.4	958.5
Operating Segments [Member] | China/Asia Pacific [Member]
Segment Reporting Information [Line Items]
Total net revenues	843.7	770.8
Depreciation and amortization expenses	53.7	48.6
Income from equity investees	50.7	42.5
Operating income/(loss)	196.8	163.4
Operating Segments [Member] | EMEA [Member]
Segment Reporting Information [Line Items]
Total net revenues	283.9	262.4
Depreciation and amortization expenses	7.7	7.6
Income from equity investees	0.0	0.0
Operating income/(loss)	39.1	44.1
Operating Segments [Member] | Channel Development [Member]
Segment Reporting Information [Line Items]
Total net revenues	560.3	553.7
Depreciation and amortization expenses	0.5	0.6
Income from equity investees	38.7	41.9
Operating income/(loss)	243.3	242.9
Operating Segments [Member] | All Other Segments [Member]
Segment Reporting Information [Line Items]
Total net revenues	120.0	154.6
Depreciation and amortization expenses	0.7	2.9
Income from equity investees	0.0	0.0
Operating income/(loss)	(30.0)	9.6
Contract Termination [Member] | Restructuring Charges [Member]
Segment Reporting Information [Line Items]
Business Exit Costs	$ 16.6	$ 0.0	$ 15.7