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Rate, Maximum Marriott License Agreement License Agreement, Marriott International, Inc. and Global Hospitality Licensing S.À R.L" [Member] License Agreement, Marriott International, Inc. and Global Hospitality Licensing S.À R.L" 2023 Inducement Equity Incentive Plan Sonder Holdings Inc. 2023 Inducement Equity Incentive Plan [Member] Sonder Holdings Inc. 2023 Inducement Equity Incentive Plan Arrangement Duration Trading Arrangement Duration Schedule of Other Non-Current Assets Schedule of Other Assets, Noncurrent [Table Text Block] Common stock subject to repurchase or forfeiture Common Stock Subject to Mandatory Redemption [Member] Entity Address, City or Town Entity Address, City or Town Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Promissory Note Promissory Note [Member] Promissory Note Straight-line rent Straight Line Rent Options vested and expected to vest, weighted average remaining contractual term Share-Based Compensation Arrangement by Share-Based Payment 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Customer, Sales Channel [Domain] Tax Credit Carryforward [Axis] Tax Credit Carryforward [Axis]