Equity (Impact of Reclassifications from Accumulated Other Comprehensive Income on Earnings) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 01, 2018	Apr. 02, 2017	Apr. 01, 2018	Apr. 02, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total cost of common stock repurchased			$ 3,171.4	$ 1,046.1
Amounts Reclassified from AOCI, Interest income and other, net	$ 35.5	$ 58.3	123.7	82.4
Amounts Reclassified from AOCI, Interest expense	(35.1)	(22.9)	(61.0)	(46.7)
Amounts Reclassified from AOCI, Revenues	6,031.8	5,294.0	12,105.5	11,027.0
Amounts Reclassified from AOCI, Cost of sales including occupancy costs	(2,516.0)	(2,141.2)	(5,018.9)	(4,436.2)
Gain resulting from acquisition of joint venture	47.6	0.0	1,373.9	0.0
Gain (Loss) on Disposition of Business	(4.9)	9.6	496.3	9.6
Amounts Reclassified from AOCI, Tax (expense)/benefit	(155.8)	(327.6)	(911.6)	(709.0)
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	(53.6)	(20.1)
Amounts Reclassified from AOCI, Tax (expense)/benefit	5.5	3.4	7.2	(12.6)
Amounts Reclassified from AOCI, Net of tax	(48.1)	(16.7)
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts Reclassified from AOCI, Net of tax	0.6	0.9	1.9	1.5
Accumulated Net Investment 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 income and other, net	(0.8)	(1.2)	(2.5)	(2.0)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts Reclassified from AOCI, Net of tax	23.4	15.8	29.3	(50.5)
Accumulated Net Investment Hedge Gain (Loss) Attributable to Parent [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts Reclassified from AOCI, Net of tax	0.0	0.0	0.0	0.0
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]
Gain resulting from acquisition of joint venture			0.1	0.0
Translation Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts Reclassified from AOCI, Net of tax	24.1	0.0	16.9	0.0
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			(1.9)	0.0
Interest Rate Contract [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying 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, Interest expense	1.2	1.2	2.4	2.4
Cross-Currency Swap [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying 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, Interest income and other, net	(26.1)	(23.4)	(26.6)	54.2
Foreign Currency Contract - Other [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying 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, Revenues	(1.4)	1.2	(1.8)	2.5
Foreign Currency and Coffee Contracts [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying 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, Cost of sales including occupancy costs	(2.4)	2.1	(9.5)	4.5
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	(24.1)	0.0	(24.1)	0.0
East China JV [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gain resulting from acquisition of joint venture	$ 1,400.0	$ 0.0		1,400.0
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			7.2	0.0
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			$ 1.4	$ 0.0