Earnings Per Share (Calculation Of Net Earnings Per Common Share ("EPS") - Basic And Diluted) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 01, 2012	Jul. 03, 2011	Jul. 01, 2012	Jul. 03, 2011
Earnings Per Share [Abstract]
Net earnings attributable to Starbucks	$ 333.1	$ 279.1	$ 1,025.1	$ 887.4
Weighted average common shares and common stock units outstanding (for basic calculation)	758.9	750.5	753.8	748.8
Dilutive effect of outstanding common stock options and RSUs	17.9	21.4	19.1	21.3
Weighted average common and common equivalent shares outstanding (for diluted calculation)	776.8	771.9	772.9	770.1
EPS - basic	$ 0.44	$ 0.37	$ 1.36	$ 1.19
EPS - diluted	$ 0.43	$ 0.36	$ 1.33	$ 1.15