Equity (Impact of Reclassifications from Accumulated Other Comprehensive Income on Earnings (Details) - USD ($)	3 Months Ended								12 Months Ended
	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 30, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 31, 2017	Sep. 29, 2019	Sep. 30, 2018	Oct. 01, 2017	Oct. 02, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ (6,231,000,000.0)				$ 1,175,800,000				$ (6,231,000,000.0)	$ 1,175,800,000	$ 5,457,000,000.0	$ 5,890,700,000
Amounts Reclassified from AOCI, Interest income and other, net									96,500,000	191,400,000	181,800,000
Amounts Reclassified from AOCI, Interest expense									(331,000,000.0)	(170,300,000)	(92,500,000)
Amounts Reclassified from AOCI, Revenue	6,747,000,000.0	$ 6,823,000,000.0	$ 6,305,900,000	$ 6,632,700,000	6,303,600,000	$ 6,310,300,000	$ 6,031,800,000	$ 6,073,700,000	26,508,600,000	24,719,500,000	22,386,800,000
Amounts Reclassified from AOCI, Cost of sales including occupancy costs									(8,526,900,000)	(7,930,700,000)	(7,065,800,000)
Gain resulting from acquisition of joint venture									0	1,376,400,000	0
Gain (Loss) on Disposition of Business									622,800,000	499,200,000	93,500,000
Amounts Reclassified from AOCI, Tax (expense)/benefit									(871,600,000)	(1,262,000,000.0)	(1,432,600,000)
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									(1,300,000)	(24,700,000)	67,200,000
Amounts Reclassified from AOCI, Tax (expense)/benefit									(1,600,000)	1,200,000	(14,000,000.0)
Amounts Reclassified from AOCI, Net of tax									(2,900,000)	(23,500,000)	53,200,000
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	3,900,000				(4,900,000)				3,900,000	(4,900,000)	(2,500,000)	1,100,000
Amounts Reclassified from AOCI, Net of tax									600,000	2,700,000	3,000,000.0
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									900,000	(3,600,000)	(4,100,000)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [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											(70,700,000)
Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	11,000,000.0				17,700,000				11,000,000.0	17,700,000	(4,100,000)	10,900,000
Amounts Reclassified from AOCI, Net of tax									4,000,000.0	3,900,000	(55,600,000)
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									3,900,000	3,900,000
Accumulated Net Investment Hedge Gain (Loss) Attributable to Parent [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(10,100,000)				19,600,000				(10,100,000)	19,600,000	14,000,000.0	1,300,000
Amounts Reclassified from AOCI, Net of tax									0	0	0
Translation Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ (508,100,000)				$ (362,700,000)				(508,100,000)	(362,700,000)	(163,000,000.0)	$ (121,700,000)
Amounts Reclassified from AOCI, Net of tax									(1,700,000)	16,900,000	(600,000)
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									0	(1,700,000)	600,000
Brazil Retail Operations [Member] | Translation Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gain (Loss) on Disposition of Business											0
Deconsolidation, Gain (Loss), Amount									0	(24,100,000)
East China JV [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gain resulting from acquisition of joint venture										1,400,000,000	1,400,000,000
Equity Method Investment, Ownership Percentage							50.00%
East China JV [Member] | Translation Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gain resulting from acquisition of joint venture									0	7,200,000	0
Taiwan JV [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Equity Method Investment, Ownership Percentage							50.00%
Taiwan JV [Member] | Translation Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gain resulting from acquisition of joint venture									0	1,400,000	0
Thailand Retail Operations [Member] | Translation Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gain (Loss) on Disposition of Business											$ 0
Deconsolidation, Gain (Loss), Amount									$ 1,700,000	$ 0