Document And Entity Information - shares shares in Millions	6 Months Ended
	Mar. 31, 2019	Apr. 24, 2019
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Trading Symbol	SBUX
Entity Central Index Key	0000829224
Current Fiscal Year End Date	--09-29
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		1,211.2
Entity Registrant Name	Starbucks Corporation