Acquisitions and Divestitures (Allocation of Total Consideration to Fair Value of Assets Acquired and Liabilities Assumed) (Details) - USD ($) $ in Millions		9 Months Ended	12 Months Ended
	Oct. 31, 2014	Sep. 27, 2015	Sep. 27, 2015	Dec. 27, 2015
Goodwill		$ 1,575.4	$ 1,575.4	$ 1,572.3
Starbucks Coffee Japan Ltd Member
Cash paid to acquire additional ownership interest in Starbucks Japan	$ 508.7	$ 362.0	$ 876.0
Fair value of preexisting equity interest	577.0
Cash and cash equivalents	224.4
Accounts receivable, net	37.4
Inventories	26.4
Prepaid expenses and other current assets	35.7
Property, plant and equipment	282.9
Other long-term assets	141.4
Other intangible assets	323.0
Goodwill	815.6
Total assets acquired	1,886.8
Accounts payable	(54.5)
Accrued liabilities	(115.9)
Stored value card liability	(36.5)
Deferred income taxes	(67.3)
Other long-term liabilities	(115.8)
Total liabilities assumed	390.0
Noncontrolling interest	(411.1)
Total consideration	$ 1,085.7