Segment Reporting (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 28, 2020	Jun. 30, 2019	Jun. 28, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Revenues	$ 4,222.1	$ 6,823.0	$ 17,314.9	$ 19,761.6
Operating income/(loss)	(703.9)	1,121.3	1,003.4	2,994.6
Operating Segments [Member] | Americas Segment [Member]
Segment Reporting Information [Line Items]
Revenues	2,805.5	4,681.1	12,146.3	13,607.6
Operating income/(loss)	(404.9)	1,018.7	1,315.1	2,843.8
Operating Segments [Member] | International Segment
Segment Reporting Information [Line Items]
Revenues	949.6	1,585.3	3,655.3	4,618.6
Operating income/(loss)	(86.0)	270.2	174.5	701.8
Operating Segments [Member] | Channel Development [Member]
Segment Reporting Information [Line Items]
Revenues	447.3	533.3	1,461.0	1,484.5
Operating income/(loss)	124.2	181.9	489.3	506.6
Operating Segments [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Revenues	19.7	23.3	52.3	50.9
Operating income/(loss)	$ (337.2)	$ (349.5)	$ (975.5)	$ (1,057.6)