Cover - USD ($) $ in Millions	12 Months Ended
	Oct. 03, 2020	Nov. 09, 2020	Mar. 27, 2020
Document Information [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Oct. 03, 2020
Document Transition Report	false
Entity File Number	001-38603
Entity Registrant Name	SONOS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	03-0479476
Entity Address, Address Line One	614 Chapala Street
Entity Address, City or Town	Santa Barbara
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	93101
City Area Code	805
Local Phone Number	965-3001
Title of 12(b) Security	Common Stock, $0.001 par value
Trading Symbol	SONO
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Small Reporting Company	false
Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 880.9
Entity Common Stock, Shares Outstanding		112,848,052
Documents Incorporated by Reference	Part III incorporates by reference certain information from the registrant’s definitive proxy statement (the "2021 Proxy Statement") relating to its 2021 Annual Meeting of Stockholders. The 2021 Proxy Statement will be filed with the United States Securities and Exchange Commission within 120 days after the end of the fiscal year to which this report relates.
Entity Central Index Key	0001314727
Current Fiscal Year End Date	--10-03
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Amendment Flag	false