Segment Reporting (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 29, 2020	Mar. 31, 2019	Mar. 29, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Revenues	$ 5,995.7	$ 6,305.9	$ 13,092.8	$ 12,938.7
Operating income/(loss)	487.4	857.7	1,707.2	1,873.4
Operating Segments [Member] | Americas Segment [Member]
Segment Reporting Information [Line Items]
Revenues	4,330.0	4,314.1	9,340.9	8,926.6
Operating income/(loss)	621.2	856.4	1,720.0	1,825.2
Operating Segments [Member] | International Segment
Segment Reporting Information [Line Items]
Revenues	1,134.6	1,529.4	2,705.7	3,033.5
Operating income/(loss)	(15.4)	201.8	260.5	431.9
Operating Segments [Member] | Channel Development [Member]
Segment Reporting Information [Line Items]
Revenues	519.1	446.6	1,013.7	951.1
Operating income/(loss)	189.6	148.9	365.1	324.6
Operating Segments [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Revenues	12.0	15.8	32.5	27.5
Operating income/(loss)	$ (308.0)	$ (349.4)	$ (638.4)	$ (708.3)