Equity (Impact of Reclassifications from Accumulated Other Comprehensive Income on Earnings Related to Cash Flow Hedges) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended												12 Months Ended
	Sep. 28, 2014	Jun. 29, 2014	Mar. 30, 2014	Dec. 29, 2013	Sep. 29, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 30, 2012		Sep. 28, 2014	Sep. 29, 2013		Sep. 30, 2012
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts Reclassified from AOCI, Interest expense					$ (9.1)		$ (6.3)		$ (6.1)		$ (6.6)		$ (64.1)	$ (28.1)		$ (32.7)
Amounts Reclassified from AOCI, Revenue	4,180.8	4,153.7	3,873.8	4,239.6	3,788.8	[1]	3,735.3	[1]	3,549.6	[1]	3,793.2	[1]	16,447.8	14,866.8	[1]	13,276.8
Amounts Reclassified from AOCI, Cost of sales including occupancy costs					(1,633.7)		(1,597.6)		(1,530.4)		(1,620.7)		(6,858.8)	(6,382.3)		(5,813.3)
Amounts Reclassified from AOCI, Tax (expense)/benefit					820.1		(194.6)		(198.1)		(188.7)		(1,092.0)	238.7		(674.4)
Amounts Reclassified from AOCI, Net of tax													2.3
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, Total before tax													0.1
Amounts Reclassified from AOCI, Tax (expense)/benefit													(3.3)
Amounts Reclassified from AOCI, Net of tax													(3.2)
Interest Rate 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, Interest expense													5.0
Foreign Exchange 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, Revenue													5.1
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													$ (10.0)

[1] Includes the reclassifications resulting from the correction of the immaterial error discussed in Note 1, Summary of Significant Accounting Policies. We reclassified $6.4 million, $6.3 million, $6.4 million and $6.2 million for the first, second, third, and fourth quarters of fiscal year 2013, respectively, and $25.4 million for the full year of fiscal 2013.