Other Intangible Assets and Goodwill (Narrative) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Jul. 02, 2017	Sep. 30, 2018	Oct. 01, 2017	Oct. 02, 2016	Jul. 01, 2018
Goodwill [Line Items]
Goodwill, Impairment Loss		$ 37,600,000	$ 87,200,000	$ 0
Goodwill		3,541,600,000	1,539,200,000	1,719,600,000
Other intangible assets		1,042,200,000	441,400,000
Amortization expense for finite-lived intangible assets		186,500,000	$ 57,500,000	$ 57,300,000
Teavana [Member]
Goodwill [Line Items]
Goodwill, Impairment Loss	$ 69,300,000
Goodwill	398,300,000				$ 398,300,000
Asset Impairment Charges	33,000,000
Other intangible assets					$ 117,200,000
Starbucks Coffee Switzerland [Member]
Goodwill [Line Items]
Goodwill, Impairment Loss	$ 17,900,000	$ 37,600,000