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Balance Sheet Components - Change in deferred revenue (Details) - USD ($) $ in Thousands	6 Months Ended
	Apr. 03, 2021	Mar. 28, 2020
Contract with Customer, Liability [Roll Forward]
Deferred revenue, beginning of period	$ 62,389	$ 56,449
Recognition of revenue included in beginning of period deferred revenue	(7,883)	(6,904)
Revenue deferred, net of revenue recognized on contracts in the respective period	16,383	10,798
Deferred revenue, end of period	$ 70,889	$ 60,343

X

- Definition

Contract With Customer, Liability, Recognition Of Period Deferred Revenue

+ References

No definition available.

+ Details

Name:	sono_ContractWithCustomerLiabilityRecognitionOfPeriodDeferredRevenue
Namespace Prefix:	sono_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Contract With Customer, Liability, Revenue Deferred, Net of Revenue Recognized On Contracts

+ References

No definition available.

+ Details

Name:	sono_ContractWithCustomerLiabilityRevenueDeferredNetofRevenueRecognizedOnContracts
Namespace Prefix:	sono_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Contract with Customer, Liability [Roll Forward]

+ References

No definition available.

+ Details

Name:	sono_ContractwithCustomerLiabilityRollForward
Namespace Prefix:	sono_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of obligation to transfer good or 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 606
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121556615&loc=SL49130531-203044

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130549-203045

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=121556615&loc=SL49130532-203044

+ Details

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