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Balance Sheet Components - Summary of Changes In Allowance for Sales Incentives (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 27, 2025 | Sep. 28, 2024 | Sep. 30, 2023
Allowance for Sales Incentives [Roll Forward] |  |  |
Beginning balance | $ 49,122 | $ 29,075 | $ 23,573
Charged to revenue | 198,759 | 183,144 | 139,657
Utilization of sales incentive allowance | (184,683) | (163,097) | (134,155)
Ending balance | $ 63,198 | $ 49,122 | $ 29,075

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- Definition Allowance For Sales Incentives + References No definition available. + Details
Name: | sono_AllowanceForSalesIncentives
Namespace Prefix: | sono_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Allowance For Sales Incentives, Charge To Revenue + References No definition available. + Details
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Namespace Prefix: | sono_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Allowance For Sales Incentives, Utilization Of Sales Incentives Allowance + References No definition available. + Details
Name: | sono_AllowanceForSalesIncentivesUtilizationOfSalesIncentivesAllowance
Namespace Prefix: | sono_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Allowance for Sales Incentives [Roll Forward] + References No definition available. + Details
Name: | sono_AllowanceforSalesIncentivesRollForward
Namespace Prefix: | sono_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration