Revenue and Geographic Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 02, 2021	Dec. 28, 2019
Disaggregation of Revenue [Line Items]
Revenue	$ 645,584	$ 562,083
Sonos speakers
Disaggregation of Revenue [Line Items]
Revenue	527,516	466,677
Sonos system products
Disaggregation of Revenue [Line Items]
Revenue	97,759	61,521
Partner products and other revenue
Disaggregation of Revenue [Line Items]
Revenue	20,309	33,885
Americas
Disaggregation of Revenue [Line Items]
Revenue	367,239	303,194
Europe, Middle East and Africa (“EMEA”)
Disaggregation of Revenue [Line Items]
Revenue	240,007	212,738
Asia Pacific (“APAC”)
Disaggregation of Revenue [Line Items]
Revenue	38,338	46,151
United States
Disaggregation of Revenue [Line Items]
Revenue	330,896	277,273
Germany
Disaggregation of Revenue [Line Items]
Revenue	58,145	58,988
Other countries
Disaggregation of Revenue [Line Items]
Revenue	$ 256,543	$ 225,822