Subsequent Event (Narrative) (Details) (Starbucks Coffee Japan Ltd Member) In Millions, unless otherwise specified		0 Months Ended		2 Months Ended	3 Months Ended			12 Months Ended
	Sep. 28, 2014	Oct. 31, 2014 Subsequent Event [Member] USD ($)	Oct. 31, 2014 Subsequent Event [Member] JPY (¥)	Nov. 14, 2014 Subsequent Event [Member] USD ($)	Dec. 28, 2014 Subsequent Event [Member]	Nov. 10, 2014 Subsequent Event [Member]	Oct. 31, 2014 Subsequent Event [Member]	Sep. 27, 2015 Subsequent Event [Member] Scenario, Forecast [Member] USD ($)	Sep. 27, 2015 Subsequent Event [Member] Scenario, Forecast [Member] JPY (¥)
Subsequent Event [Line Items]
Existing ownership percentage in Starbucks Japan	39.50%
Remaining ownership interest in Starbucks Japan to be acquired	60.50%
Reason for acquisition					We are acquiring Starbucks Japan to further leverage our existing infrastructure to continue disciplined retail store growth and expand our presence into other channels in the Japan market, such as CPG, licensing and foodservice
Acquisition date		Oct. 31, 2014	Oct. 31, 2014
Ownership interest in Starbucks Japan acquired through first tender offer step							39.50%
Cash paid to acquire additional ownership interest in Starbucks Japan		$ 511.0	¥ 55,000.0					$ 382.0	¥ 44,500.0
Ownership interest in Starbucks Japan after first tender offer step							79.00%
Remaining interest of minority shareholders' to be acquired						21.00%
Ownership interest after conclusion of cash-out procedure								100.00%	100.00%
Reference conversion rate				116.52
Acquisition-related costs incurred				$ 5