Condensed Consolidated Statements of Earnings (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 29, 2015	Mar. 30, 2014	Mar. 29, 2015	Mar. 30, 2014
Net revenues:
Total net revenues	$ 4,563.5	$ 3,873.8	$ 9,366.8	$ 8,113.4
Cost of sales including occupancy costs	1,859.8	1,629.2	3,851.0	3,424.2
Store operating expenses	1,324.6	1,134.5	2,640.1	2,309.6
Other operating expenses	133.5	110.9	262.9	225.8
Depreciation and amortization expenses	217.1	174.4	423.1	344.1
General and administrative expenses	305.9	240.6	604.3	483.2
Litigation credit	0	0	0	(20.2)
Total operating expenses	3,840.9	3,289.6	7,781.4	6,766.7
Income from equity investees	54.9	59.9	107.7	111.0
Operating income	777.5	644.1	1,693.1	1,457.7
Gain resulting from acquisition of joint venture	0	0	390.6	0
Interest income and other, net	1.3	17.8	11.1	37.6
Interest expense	(16.9)	(16.7)	(33.2)	(31.3)
Earnings before income taxes	761.9	645.2	2,061.6	1,464.0
Income tax expense	266.3	218.3	581.2	496.4
Net earnings including noncontrolling interests	495.6	426.9	1,480.4	967.6
Net earnings/(loss) attributable to noncontrolling interests	0.7	(0.1)	2.1	0
Net earnings attributable to Starbucks	494.9	427.0	1,478.3	967.6
Earnings per share - basic	$ 0.33	$ 0.28	$ 0.99	$ 0.64
Earnings per share - diluted	$ 0.33	$ 0.28	$ 0.97	$ 0.63
Weighted average shares outstanding:
Basic	1,500.5	1,510.3	1,499.7	1,510.1
Diluted	1,516.5	1,529.1	1,516.7	1,530.7
Cash dividends declared per share	$ 0.16	$ 0.13	$ 0.32	$ 0.26
Company-operated stores [Member]
Net revenues:
Total net revenues	3,622.9	3,068.0	7,395.7	6,411.8
Licensed stores [Member]
Net revenues:
Total net revenues	421.3	356.2	905.3	758.0
CPG, foodservice and other [Member]
Net revenues:
Total net revenues	$ 519.3	$ 449.6	$ 1,065.8	$ 943.6