Equity (Impact of Reclassifications from Accumulated Other Comprehensive Income on Earnings (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 01, 2023	Oct. 02, 2022	Oct. 03, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts Reclassified from AOCI, Interest income and other, net	$ 81.2	$ 97.0	$ 90.1
Amounts Reclassified from AOCI, Interest expense	(550.1)	(482.9)	(469.8)
Amounts Reclassified from AOCI, Tax (expense)/benefit	(1,277.2)	(948.5)	(1,156.6)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from AOCI, Current Period, before Tax, Attributable to Parent	158.9	210.5	(41.8)
Amounts Reclassified from AOCI, Tax (expense)/benefit	26.1	34.2	(5.0)
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	132.8	176.3	(36.8)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(0.7)	(0.2)	1.5
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts Reclassified from AOCI, Interest income and other, net	(0.7)	(0.4)	1.8
Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	114.3	166.0	(0.2)
Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts Reclassified, from AOCI, Total before tax	(133.5)	(196.6)	(1.9)
Accumulated Net Investment Hedge Gain (Loss) Attributable to Parent [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	20.5	10.6	10.0
Accumulated Net Investment Hedge Gain (Loss) Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts Reclassified from AOCI, Interest expense	(27.4)	(14.3)	(13.4)
Translation Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(1.3)	(0.1)	(48.1)
Translation Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts Reclassified from AOCI, Interest income and other, net	(1.3)	0.0	0.0
Korea JV
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Deconsolidation, Gain (Loss), Amount			864.5
Korea JV | Translation Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Deconsolidation, Gain (Loss), Amount	$ 0.0	$ 0.0	$ (58.9)