Acquisition (Impact On Shareholders' Equity Of Acquisition Of Minority Interest Holder) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 03, 2011	Jun. 27, 2010	Jul. 03, 2011	Jun. 27, 2010	May 30, 2011 Maxim's Caterers Limited [Member]
Net earnings attributable to Starbucks	$ 279.1	$ 207.9	$ 887.4	$ 666.7
Decrease in additional paid-in capital for purchase of 30% interest in subsidiary			(28.0)	0
Change from net earnings attributable to Starbucks and transfers to noncontrolling interest			$ 859.4	$ 666.7
Ownership interest acquired					30.00%
Ownership interest in equity investees sold					5.00%