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

Prepaid Royalty Economic Life

+ References

No definition available.

+ Details

Name:	sbux_PrepaidRoyaltyEconomicLife
Namespace Prefix:	sbux_
Data Type:	xbrli:durationItemType
Balance Type:	na
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=120391452&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_StoredValueCardsAndLoyaltyProgramBreakageInPriorYearDomain
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	sbux_AdjustmentsForNewAccountingPronouncementInPriorYearAxis=sbux_StoredValueCardsAndLoyaltyProgramBreakageInPriorYearDomain
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Deferred Revenue (Narrative) (Details) - USD ($) $ in Millions		12 Months Ended
	Aug. 26, 2018	Sep. 27, 2020	Sep. 29, 2019	Oct. 01, 2018	Sep. 30, 2018
Deferred Revenue, Noncurrent		$ 6,598.5	$ 6,744.4
Deferred Revenue	$ 7,000.0
Deferred Revenue, Revenue Recognized		176.8	175.2
Deferred Revenue, Current		1,456.5	1,269.0
Prepaid Royalty Economic Life	40 years
Nestle Global Coffee Alliance [Member]
Deferred Revenue, Noncurrent		6,500.0	6,700.0
Deferred Revenue	$ 7,000.0
Deferred Revenue, Current		179.3	175.9
Revenue Recognition Period Stored Value Cards and Loyalty Program Breakage [Member]
Deferred Revenue		1,280.5	1,113.7	$ 970.6	$ 1,328.6
Deferred Revenue, Additions		10,527.7	10,983.6
Deferred Revenue, Revenue Recognized		(10,367.9)	(10,819.7)
Deferred Revenue, Other		7.0	(20.8)
Deferred Revenue, Current		$ 1,200.0	$ 1,000.0
Stored Value Card breakage revenue [Domain] \| Revenue Recognition Period Stored Value Cards and Loyalty Program Breakage [Member]
Deferred Revenue					$ (358.0)