Amount of increase (decrease) in deferred revenue for other items.

No definition available.

Name:	sbux_DeferredRevenueOther
Namespace Prefix:	sbux_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(5))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DeferredRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of deferred revenue recognized for transactions arising during the current reporting period. Deferred revenue is a liability as of the balance sheet date related to a revenue producing activity for which revenue has not yet been recognized. Generally, an Entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

+ References

No definition available.

+ Details

Name:	us-gaap_DeferredRevenueAdditions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable, classified as current.

+ References

+ Details

Name:	us-gaap_DeferredRevenueCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable, classified as noncurrent.

+ References

+ Details

Name:	us-gaap_DeferredRevenueNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of revenue recognized that was previously reported as deferred or unearned revenue.

+ References

No definition available.

+ Details

Name:	us-gaap_DeferredRevenueRevenueRecognized1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_TypeOfArrangementAxis=sbux_NestleGlobalCoffeeAllianceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=sbux_RevenueRecognitionPeriodStoredValueCardsandLoyaltyProgramBreakageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Revenue Recognition (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 29, 2020	Mar. 31, 2019	Mar. 29, 2020	Mar. 31, 2019	Dec. 29, 2019	Sep. 29, 2019
Deferred Revenue, Current	$ 1,436.3		$ 1,436.3			$ 1,269.0
Deferred Revenue, Noncurrent	6,685.5		6,685.5			6,744.4
Deferred Revenue, Revenue Recognized	44.2	$ 43.7	88.4	$ 87.8
Nestle Global Coffee Alliance [Member]
Deferred Revenue, Current	176.5		176.5
Deferred Revenue, Noncurrent	6,600.0		6,600.0
Revenue Recognition Period Stored Value Cards and Loyalty Program Breakage [Member]
Deferred Revenue, Current	1,191.5		1,191.5
Deferred Revenue, Revenue Recognized	(2,736.4)		5,798.3
Deferred Revenue, Additions	2,453.6		5,961.1
Deferred Revenue, Other	(5.1)		(3.4)
Deferred Revenue	$ 1,273.1		$ 1,273.1		$ 1,561.0	$ 1,113.7