Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 29, 2013	Sep. 30, 2012	Oct. 02, 2011
Net earnings including noncontrolling interests	$ 8.8	$ 1,384.7	$ 1,248.0
Other comprehensive income/(loss), net of tax:
Net unrealized holding gains/(losses)	85.6	(26.4)	(4.4)
Translation adjustment, before tax	(41.6)	6.1	(7.4)
Translation adjustment, tax (expense)/benefit	0.3	(3.3)	0.9
Other comprehensive income/(loss)	44.3	(23.6)	(10.9)
Comprehensive income/(loss) including noncontrolling interests	53.1	1,361.1	1,237.1
Comprehensive income attributable to noncontrolling interests	0.5	0.9	2.3
Comprehensive income attributable to Starbucks	52.6	1,360.2	1,234.8
Available-for-sale Securities [Member]
Other comprehensive income/(loss), net of tax:
Unrealized holding gains/(losses) on available-for-sale securities, before tax	(0.6)	0.7	0.7
Unrealized holding gains/(losses) on available-for-sale securities, tax (expense)/benefit	0.2	(0.3)	(0.3)
Cash Flow Hedging [Member]
Other comprehensive income/(loss), net of tax:
Unrealized holding gains/(losses) on derivatives, before tax	47.1	(42.2)	(12.2)
Unrealized holding gains/(losses) on derivatives, tax (expense)/benefit	(24.6)	4.3	4.5
Reclassification adjustment for net (gains)/losses realized in net earnings for cash flow hedges, before tax	46.3	14.8	16.6
Reclassification adjustment for net (gains)/losses realized in net earnings for cash flow hedges, tax expense/(benefit)	(3.5)	(4.3)	(6.1)
Net Investment Hedging [Member]
Other comprehensive income/(loss), net of tax:
Unrealized holding gains/(losses) on derivatives, before tax	32.8	1.0	(12.1)
Unrealized holding gains/(losses) on derivatives, tax (expense)/benefit	$ (12.1)	$ (0.4)	$ 4.5