Condensed Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jul. 01, 2012	Jun. 30, 2013	Jul. 01, 2012
Net earnings including noncontrolling interest	$ 417.8	$ 333.3	$ 1,240.9	$ 1,025.7
Other comprehensive income (loss), net of tax:
Net unrealized holding gains/(losses)	51.0	(20.2)	62.0	(25.8)
Translation adjustment, before tax	(25.0)	(23.0)	(74.7)	(22.5)
Translation adjustment, tax (expense)/benefit	5.8	(1.0)	4.5	(0.5)
Other comprehensive loss	31.8	(44.2)	(8.2)	(48.8)
Comprehensive income including noncontrolling interest	449.6	289.1	1,232.7	976.9
Comprehensive income attributable to noncontrolling interest	0	0.2	0.6	0.6
Comprehensive income attributable to Starbucks	449.6	288.9	1,232.1	976.3
Available-for-sale Securities [Member]
Other comprehensive income (loss), net of tax:
Unrealized holding (gains)/losses on available-for-sale securities, before tax	(0.3)	0	(0.3)	0
Unrealized holding (gains)/losses on available-for-sale securities, tax (expense)/benefit	0.1	0	0.1	0
Cash Flow Hedging [Member]
Other comprehensive income (loss), net of tax:
Unrealized holding gains/(losses) on derivatives, before tax	55.6	(22.5)	34.9	(39.0)
Unrealized holding gains/(losses) on derivatives, tax (expense)/benefit	(20.0)	2.6	(19.7)	3.2
Reclassification adjustment for net (gains)/losses realized in net earnings for cash flow hedges, before tax	11.1	4.1	27.3	10.0
Reclassification adjustment for net (gains)/losses realized in net earnings for cash flow hedges, tax expense/(benefit)	(0.5)	(1.0)	(1.9)	(3.1)
Net Investment Hedging [Member]
Other comprehensive income (loss), net of tax:
Unrealized holding gains/(losses) on derivatives, before tax	7.9	(5.4)	34.3	4.9
Unrealized holding gains/(losses) on derivatives, tax (expense)/benefit	$ (2.9)	$ 2.0	$ (12.7)	$ (1.8)