Segment Reporting (Reconciliation Of Total Segment Operating Income To Consolidated Earnings Before Income Taxes) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 28, 2021	Mar. 29, 2020	Mar. 28, 2021	Mar. 29, 2020
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total net revenues	$ 6,668.0	$ 5,995.7	$ 13,417.5	$ 13,092.8
Depreciation and amortization expenses	366.7	356.3	732.6	707.4
Income from equity investees	77.1	67.9	159.7	141.9
Operating income/(loss)	987.6	487.4	1,901.2	1,707.2
Americas [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total net revenues	4,664.6	4,330.0	9,367.9	9,340.9
Depreciation and amortization expenses	186.0	191.5	374.9	380.7
Income from equity investees	0.0	0.0	0.0	0.0
Operating income/(loss)	905.3	621.2	1,718.7	1,720.0
International [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total net revenues	1,610.9	1,134.6	3,265.3	2,705.7
Depreciation and amortization expenses	143.4	130.0	283.4	256.7
Income from equity investees	26.8	24.8	53.0	55.8
Operating income/(loss)	251.5	(15.4)	526.3	260.5
Channel Development [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total net revenues	369.9	519.1	741.2	1,013.7
Depreciation and amortization expenses	0.3	0.3	0.6	0.6
Income from equity investees	50.3	43.1	106.7	86.1
Operating income/(loss)	172.6	189.6	353.3	365.1
Corporate and Other [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total net revenues	22.6	12.0	43.1	32.5
Depreciation and amortization expenses	37.0	34.5	73.7	69.4
Income from equity investees	0.0	0.0	0.0	0.0
Operating income/(loss)	$ (341.8)	$ (308.0)	$ (697.1)	$ (638.4)