Equity (Impact of Reclassifications from Accumulated Other Comprehensive Income on Earnings) (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 30, 2018	Dec. 31, 2017	Sep. 30, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total cost of common stock repurchased	$ 5,000.0	$ 1,618.2
Amounts Reclassified from AOCI, Interest income and other, net	24.8	88.2
Revenues	6,632.7	6,073.7
Amounts Reclassified from AOCI, Interest expense	(75.0)	(25.9)
Amounts Reclassified from AOCI, Cost of sales including occupancy costs	(2,758.7)	(2,501.7)
Gain resulting from acquisition of joint venture	0.0	1,326.3
Gain (Loss) on Disposition of Business	0.0	501.2
Amounts Reclassified from AOCI, Tax (expense)/benefit	(205.1)	(755.8)
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	(8.1)	(0.2)
Amounts Reclassified from AOCI, Tax (expense)/benefit	0.7	1.3
Amounts Reclassified from AOCI, Net of tax	(7.4)	1.1
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	0.3	1.2
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	0.5	(1.6)
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	7.1	4.9
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
Translation Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts Reclassified from AOCI, Net of tax	0.0	(7.2)
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	0.0	(1.8)
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	1.4	1.2
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	(11.7)	(0.5)
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]
Revenues	1.4	(0.4)
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	0.3	(5.7)
East China JV [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gain resulting from acquisition of joint venture			$ 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	0.0	7.2
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	$ 0.0	$ 1.4