3.22.0.1 html 564 565 1 true 139 0 false 8 false false R1.htm 000010001 - Document - Cover Sheet http://sonder.com/role/Cover Cover Cover 1 false false R2.htm 100010002 - Statement - BALANCE SHEETS (Unaudited) Sheet http://sonder.com/role/BALANCESHEETSUnaudited BALANCE SHEETS (Unaudited) Statements 2 false false R3.htm 100020003 - Statement - BALANCE SHEETS (Unaudited) (Parenthetical) Sheet http://sonder.com/role/BALANCESHEETSUnauditedParenthetical BALANCE SHEETS (Unaudited) (Parenthetical) Statements 3 false false R4.htm 100030004 - Statement - STATEMENTS OF OPERATIONS (Unaudited) Sheet http://sonder.com/role/STATEMENTSOFOPERATIONSUnaudited STATEMENTS OF OPERATIONS (Unaudited) Statements 4 false false R5.htm 100040005 - Statement - STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (DEFICIT) (Unaudited) Sheet http://sonder.com/role/STATEMENTSOFCHANGESINSTOCKHOLDERSEQUITYDEFICITUnaudited STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (DEFICIT) (Unaudited) Statements 5 false false R6.htm 100050006 - Statement - STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (DEFICIT) (Unaudited) (Parenthetical) Sheet http://sonder.com/role/STATEMENTSOFCHANGESINSTOCKHOLDERSEQUITYDEFICITUnauditedParenthetical STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (DEFICIT) (Unaudited) (Parenthetical) Statements 6 false false R7.htm 100060007 - Statement - STATEMENT OF CASH FLOWS (Unaudited) Sheet http://sonder.com/role/STATEMENTOFCASHFLOWSUnaudited STATEMENT OF CASH FLOWS (Unaudited) Statements 7 false false R8.htm 100070008 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS Sheet http://sonder.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETS CONDENSED CONSOLIDATED BALANCE SHEETS Statements 8 false false R9.htm 100080009 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) Sheet http://sonder.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSParenthetical CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) Statements 9 false false R10.htm 100090010 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS Sheet http://sonder.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVELOSS CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS Statements 10 false false R11.htm 100100011 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF MEZZANINE EQUITY AND STOCKHOLDERS??? DEFICIT Sheet http://sonder.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFMEZZANINEEQUITYANDSTOCKHOLDERSDEFICIT CONDENSED CONSOLIDATED STATEMENTS OF MEZZANINE EQUITY AND STOCKHOLDERS??? DEFICIT Statements 11 false false R12.htm 100110012 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS Sheet http://sonder.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS Statements 12 false false R13.htm 100120013 - Statement - CONSOLIDATED BALANCE SHEETS Sheet http://sonder.com/role/CONSOLIDATEDBALANCESHEETS CONSOLIDATED BALANCE SHEETS Statements 13 false false R14.htm 100130014 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) Sheet http://sonder.com/role/CONSOLIDATEDBALANCESHEETSParenthetical CONSOLIDATED BALANCE SHEETS (Parenthetical) Statements 14 false false R15.htm 100140015 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS Sheet http://sonder.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVELOSS CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS Statements 15 false false R16.htm 100150016 - Statement - CONSOLIDATED STATEMENTS OF MEZZANINE EQUITY AND STOCKHOLDERS??? DEFICIT Sheet http://sonder.com/role/CONSOLIDATEDSTATEMENTSOFMEZZANINEEQUITYANDSTOCKHOLDERSDEFICIT CONSOLIDATED STATEMENTS OF MEZZANINE EQUITY AND STOCKHOLDERS??? DEFICIT Statements 16 false false R17.htm 100160017 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS Sheet http://sonder.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS CONSOLIDATED STATEMENTS OF CASH FLOWS Statements 17 false false R18.htm 210011001 - Disclosure - Organization and Business Operations Sheet http://sonder.com/role/OrganizationandBusinessOperations Organization and Business Operations Notes 18 false false R19.htm 210031002 - Disclosure - Significant Accounting Policies Sheet http://sonder.com/role/SignificantAccountingPolicies Significant Accounting Policies Notes 19 false false R20.htm 210081003 - Disclosure - Public Offering Sheet http://sonder.com/role/PublicOffering Public Offering Notes 20 false false R21.htm 210121004 - Disclosure - Proposed Offering Sheet http://sonder.com/role/ProposedOffering Proposed Offering Notes 21 false false R22.htm 210141005 - Disclosure - Related Party Transactions Sheet http://sonder.com/role/RelatedPartyTransactions Related Party Transactions Notes 22 false false R23.htm 210161006 - Disclosure - Contingencies Sheet http://sonder.com/role/Contingencies Contingencies Notes 23 false false R24.htm 210171007 - Disclosure - Deferred Underwriting Compensation Sheet http://sonder.com/role/DeferredUnderwritingCompensation Deferred Underwriting Compensation Notes 24 false false R25.htm 210191008 - Disclosure - Income Taxes Sheet http://sonder.com/role/IncomeTaxes Income Taxes Notes 25 false false R26.htm 210211009 - Disclosure - Cash, Cash Equivalents and Other Investments Held in Trust Account Sheet http://sonder.com/role/CashCashEquivalentsandOtherInvestmentsHeldinTrustAccount Cash, Cash Equivalents and Other Investments Held in Trust Account Notes 26 false false R27.htm 210231010 - Disclosure - Fair Value Measurement Sheet http://sonder.com/role/FairValueMeasurement Fair Value Measurement Notes 27 false false R28.htm 210291011 - Disclosure - Stockholder's Equity Sheet http://sonder.com/role/StockholdersEquity Stockholder's Equity Notes 28 false false R29.htm 210311012 - Disclosure - Risk and Uncertainties Sheet http://sonder.com/role/RiskandUncertainties Risk and Uncertainties Notes 29 false false R30.htm 210321013 - Disclosure - Subsequent Events Sheet http://sonder.com/role/SubsequentEvents Subsequent Events Notes 30 false false R31.htm 210341014 - Disclosure - Description of Business and Summary of Significant Accounting Policies Sheet http://sonder.com/role/DescriptionofBusinessandSummaryofSignificantAccountingPolicies Description of Business and Summary of Significant Accounting Policies Notes 31 false false R32.htm 210371015 - Disclosure - Revenue Sheet http://sonder.com/role/Revenue Revenue Notes 32 false false R33.htm 210401016 - Disclosure - Net Loss Per Common Share Sheet http://sonder.com/role/NetLossPerCommonShare Net Loss Per Common Share Notes 33 false false R34.htm 210451017 - Disclosure - Fair value measurement and financial instruments Sheet http://sonder.com/role/Fairvaluemeasurementandfinancialinstruments Fair value measurement and financial instruments Notes 34 false false R35.htm 210491018 - Disclosure - Debt Sheet http://sonder.com/role/Debt Debt Notes 35 false false R36.htm 210531019 - Disclosure - Preferred Stock Warrants Sheet http://sonder.com/role/PreferredStockWarrants Preferred Stock Warrants Notes 36 false false R37.htm 210571020 - Disclosure - Leases Sheet http://sonder.com/role/Leases Leases Notes 37 false false R38.htm 210611021 - Disclosure - Commitments and contingencies Sheet http://sonder.com/role/Commitmentsandcontingencies Commitments and contingencies Notes 38 false false R39.htm 210631022 - Disclosure - Guarantees and Indemnifications Sheet http://sonder.com/role/GuaranteesandIndemnifications Guarantees and Indemnifications Notes 39 false false R40.htm 210641023 - Disclosure - Exchangeable shares and redeemable convertible preferred stock Sheet http://sonder.com/role/Exchangeablesharesandredeemableconvertiblepreferredstock Exchangeable shares and redeemable convertible preferred stock Notes 40 false false R41.htm 210671024 - Disclosure - Common Stock Sheet http://sonder.com/role/CommonStock Common Stock Notes 41 false false R42.htm 210711025 - Disclosure - Stockholders??? Deficit Sheet http://sonder.com/role/StockholdersDeficit Stockholders??? Deficit Notes 42 false false R43.htm 210761026 - Disclosure - Income Taxes Sheet http://sonder.com/role/IncomeTaxes_1 Income Taxes Notes 43 false false R44.htm 210781027 - Disclosure - Related party transactions Sheet http://sonder.com/role/Relatedpartytransactions Related party transactions Notes 44 false false R45.htm 210801028 - Disclosure - Subsequent events Sheet http://sonder.com/role/Subsequentevents Subsequent events Notes 45 false false R46.htm 210821029 - Disclosure - Description of Business Sheet http://sonder.com/role/DescriptionofBusiness Description of Business Notes 46 false false R47.htm 210831030 - Disclosure - Summary of Significant Accounting Policies Sheet http://sonder.com/role/SummaryofSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 47 false false R48.htm 210881031 - Disclosure - Revenue Sheet http://sonder.com/role/Revenue_1 Revenue Notes 48 false false R49.htm 210941032 - Disclosure - Balance Sheet Details Sheet http://sonder.com/role/BalanceSheetDetails Balance Sheet Details Notes 49 false false R50.htm 210971033 - Disclosure - Fair value measurement and financial instruments Sheet http://sonder.com/role/Fairvaluemeasurementandfinancialinstruments_1 Fair value measurement and financial instruments Notes 50 false false R51.htm 211011034 - Disclosure - Property and equipment, net Sheet http://sonder.com/role/Propertyandequipmentnet Property and equipment, net Notes 51 false false R52.htm 211041035 - Disclosure - Debt Sheet http://sonder.com/role/Debt_1 Debt Notes 52 false false R53.htm 211061036 - Disclosure - Preferred Stock Warrants Sheet http://sonder.com/role/PreferredStockWarrants_1 Preferred Stock Warrants Notes 53 false false R54.htm 211101037 - Disclosure - Leases Sheet http://sonder.com/role/Leases_1 Leases Notes 54 false false R55.htm 211141038 - Disclosure - Commitments and contingencies Sheet http://sonder.com/role/Commitmentsandcontingencies_1 Commitments and contingencies Notes 55 false false R56.htm 211161039 - Disclosure - Guarantees and Indemnifications Sheet http://sonder.com/role/GuaranteesandIndemnifications_1 Guarantees and Indemnifications Notes 56 false false R57.htm 211171040 - Disclosure - Exchangeable shares and redeemable convertible preferred stock Sheet http://sonder.com/role/Exchangeablesharesandredeemableconvertiblepreferredstock_1 Exchangeable shares and redeemable convertible preferred stock Notes 57 false false R58.htm 211201041 - Disclosure - Common stock Sheet http://sonder.com/role/Commonstock Common stock Notes 58 false false R59.htm 211241042 - Disclosure - Stockholders??? Deficit Sheet http://sonder.com/role/StockholdersDeficit_1 Stockholders??? Deficit Notes 59 false false R60.htm 211301043 - Disclosure - Income taxes Sheet http://sonder.com/role/Incometaxes Income taxes Notes 60 false false R61.htm 211381044 - Disclosure - Net Loss Per Common Share Sheet http://sonder.com/role/NetLossPerCommonShare_1 Net Loss Per Common Share Notes 61 false false R62.htm 211431045 - Disclosure - Related party transactions Sheet http://sonder.com/role/Relatedpartytransactions_1 Related party transactions Notes 62 false false R63.htm 211451046 - Disclosure - Subsequent events Sheet http://sonder.com/role/Subsequentevents_1 Subsequent events Notes 63 false false R64.htm 220042001 - Disclosure - Significant Accounting Policies (Policies) Sheet http://sonder.com/role/SignificantAccountingPoliciesPolicies Significant Accounting Policies (Policies) Policies http://sonder.com/role/SignificantAccountingPolicies 64 false false R65.htm 220352002 - Disclosure - Description of Business and Summary of Significant Accounting Policies (Policies) Sheet http://sonder.com/role/DescriptionofBusinessandSummaryofSignificantAccountingPoliciesPolicies Description of Business and Summary of Significant Accounting Policies (Policies) Policies http://sonder.com/role/SignificantAccountingPolicies 65 false false R66.htm 220842003 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://sonder.com/role/SummaryofSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://sonder.com/role/SignificantAccountingPolicies 66 false false R67.htm 230053001 - Disclosure - Significant Accounting Policies (Tables) Sheet http://sonder.com/role/SignificantAccountingPoliciesTables Significant Accounting Policies (Tables) Tables http://sonder.com/role/SignificantAccountingPolicies 67 false false R68.htm 230093002 - Disclosure - Public Offering (Tables) Sheet http://sonder.com/role/PublicOfferingTables Public Offering (Tables) Tables http://sonder.com/role/PublicOffering 68 false false R69.htm 230243003 - Disclosure - Fair Value Measurement (Tables) Sheet http://sonder.com/role/FairValueMeasurementTables Fair Value Measurement (Tables) Tables http://sonder.com/role/FairValueMeasurement 69 false false R70.htm 230383004 - Disclosure - Revenue (Tables) Sheet http://sonder.com/role/RevenueTables Revenue (Tables) Tables http://sonder.com/role/Revenue 70 false false R71.htm 230413005 - Disclosure - Net Loss Per Common Share (Tables) Sheet http://sonder.com/role/NetLossPerCommonShareTables Net Loss Per Common Share (Tables) Tables http://sonder.com/role/NetLossPerCommonShare 71 false false R72.htm 230463006 - Disclosure - Fair value measurement and financial instruments (Tables) Sheet http://sonder.com/role/FairvaluemeasurementandfinancialinstrumentsTables Fair value measurement and financial instruments (Tables) Tables http://sonder.com/role/Fairvaluemeasurementandfinancialinstruments 72 false false R73.htm 230503007 - Disclosure - Debt (Tables) Sheet http://sonder.com/role/DebtTables Debt (Tables) Tables http://sonder.com/role/Debt 73 false false R74.htm 230543008 - Disclosure - Preferred Stock Warrants (Tables) Sheet http://sonder.com/role/PreferredStockWarrantsTables Preferred Stock Warrants (Tables) Tables http://sonder.com/role/PreferredStockWarrants 74 false false R75.htm 230583009 - Disclosure - Leases (Tables) Sheet http://sonder.com/role/LeasesTables Leases (Tables) Tables http://sonder.com/role/Leases 75 false false R76.htm 230653010 - Disclosure - Exchangeable shares and redeemable convertible preferred stock (Tables) Sheet http://sonder.com/role/ExchangeablesharesandredeemableconvertiblepreferredstockTables Exchangeable shares and redeemable convertible preferred stock (Tables) Tables http://sonder.com/role/Exchangeablesharesandredeemableconvertiblepreferredstock 76 false false R77.htm 230683011 - Disclosure - Common Stock (Tables) Sheet http://sonder.com/role/CommonStockTables Common Stock (Tables) Tables http://sonder.com/role/CommonStock 77 false false R78.htm 230723012 - Disclosure - Stockholders??? Deficit (Tables) Sheet http://sonder.com/role/StockholdersDeficitTables Stockholders??? Deficit (Tables) Tables http://sonder.com/role/StockholdersDeficit 78 false false R79.htm 230853013 - Disclosure - Summary of Significant Accounting Policies (Tables) Sheet http://sonder.com/role/SummaryofSignificantAccountingPoliciesTables Summary of Significant Accounting Policies (Tables) Tables http://sonder.com/role/SummaryofSignificantAccountingPolicies 79 false false R80.htm 230893014 - Disclosure - Revenue (Tables) Sheet http://sonder.com/role/RevenueTables_1 Revenue (Tables) Tables http://sonder.com/role/Revenue 80 false false R81.htm 230953015 - Disclosure - Balance Sheet Details (Tables) Sheet http://sonder.com/role/BalanceSheetDetailsTables Balance Sheet Details (Tables) Tables http://sonder.com/role/BalanceSheetDetails 81 false false R82.htm 230983016 - Disclosure - Fair value measurement and financial instruments (Tables) Sheet http://sonder.com/role/FairvaluemeasurementandfinancialinstrumentsTables_1 Fair value measurement and financial instruments (Tables) Tables http://sonder.com/role/Fairvaluemeasurementandfinancialinstruments 82 false false R83.htm 231023017 - Disclosure - Property and equipment, net (Tables) Sheet http://sonder.com/role/PropertyandequipmentnetTables Property and equipment, net (Tables) Tables http://sonder.com/role/Propertyandequipmentnet 83 false false R84.htm 231073018 - Disclosure - Preferred Stock Warrants (Tables) Sheet http://sonder.com/role/PreferredStockWarrantsTables_1 Preferred Stock Warrants (Tables) Tables http://sonder.com/role/PreferredStockWarrants 84 false false R85.htm 231113019 - Disclosure - Leases (Tables) Sheet http://sonder.com/role/LeasesTables_1 Leases (Tables) Tables http://sonder.com/role/Leases 85 false false R86.htm 231183020 - Disclosure - Exchangeable shares and redeemable convertible preferred stock (Tables) Sheet http://sonder.com/role/ExchangeablesharesandredeemableconvertiblepreferredstockTables_1 Exchangeable shares and redeemable convertible preferred stock (Tables) Tables http://sonder.com/role/Exchangeablesharesandredeemableconvertiblepreferredstock 86 false false R87.htm 231213021 - Disclosure - Common stock (Tables) Sheet http://sonder.com/role/CommonstockTables Common stock (Tables) Tables http://sonder.com/role/Commonstock 87 false false R88.htm 231253022 - Disclosure - Stockholders??? Deficit (Tables) Sheet http://sonder.com/role/StockholdersDeficitTables_1 Stockholders??? Deficit (Tables) Tables http://sonder.com/role/StockholdersDeficit 88 false false R89.htm 231313023 - Disclosure - Income taxes (Tables) Sheet http://sonder.com/role/IncometaxesTables Income taxes (Tables) Tables http://sonder.com/role/Incometaxes 89 false false R90.htm 231393024 - Disclosure - Net Loss Per Common Share (Tables) Sheet http://sonder.com/role/NetLossPerCommonShareTables_1 Net Loss Per Common Share (Tables) Tables http://sonder.com/role/NetLossPerCommonShare 90 false false R91.htm 240024001 - Disclosure - Organization and Business Operations - Additional Information (Details) Sheet http://sonder.com/role/OrganizationandBusinessOperationsAdditionalInformationDetails Organization and Business Operations - Additional Information (Details) Details 91 false false R92.htm 240064002 - Disclosure - Significant Accounting Policies - Additional Information (Details) Sheet http://sonder.com/role/SignificantAccountingPoliciesAdditionalInformationDetails Significant Accounting Policies - Additional Information (Details) Details 92 false false R93.htm 240074003 - Disclosure - Significant Accounting Policies - Schedule of Reconciliation of Numerator and Denominator Used to Compute Basic and Diluted Net Income/(Loss) per Share (Details) Sheet http://sonder.com/role/SignificantAccountingPoliciesScheduleofReconciliationofNumeratorandDenominatorUsedtoComputeBasicandDilutedNetIncomeLossperShareDetails Significant Accounting Policies - Schedule of Reconciliation of Numerator and Denominator Used to Compute Basic and Diluted Net Income/(Loss) per Share (Details) Details 93 false false R94.htm 240104004 - Disclosure - Public Offering - Additional Information (Details) Sheet http://sonder.com/role/PublicOfferingAdditionalInformationDetails Public Offering - Additional Information (Details) Details 94 false false R95.htm 240114005 - Disclosure - Public Offering - Reconciliation of Class A Common Stock (Details) Sheet http://sonder.com/role/PublicOfferingReconciliationofClassACommonStockDetails Public Offering - Reconciliation of Class A Common Stock (Details) Details 95 false false R96.htm 240134006 - Disclosure - Proposed Offering - Additional information (Details) Sheet http://sonder.com/role/ProposedOfferingAdditionalinformationDetails Proposed Offering - Additional information (Details) Details 96 false false R97.htm 240154007 - Disclosure - Related Party Transactions - Additional Information (Details) Sheet http://sonder.com/role/RelatedPartyTransactionsAdditionalInformationDetails Related Party Transactions - Additional Information (Details) Details 97 false false R98.htm 240184008 - Disclosure - Deferred Underwriting Compensation - Additional Information (Details) Sheet http://sonder.com/role/DeferredUnderwritingCompensationAdditionalInformationDetails Deferred Underwriting Compensation - Additional Information (Details) Details 98 false false R99.htm 240204009 - Disclosure - Income Taxes - Additional Information (Details) Sheet http://sonder.com/role/IncomeTaxesAdditionalInformationDetails Income Taxes - Additional Information (Details) Details 99 false false R100.htm 240224010 - Disclosure - Cash, Cash Equivalents and Other Investments Held in Trust Account - Additional Information (Details) Sheet http://sonder.com/role/CashCashEquivalentsandOtherInvestmentsHeldinTrustAccountAdditionalInformationDetails Cash, Cash Equivalents and Other Investments Held in Trust Account - Additional Information (Details) Details 100 false false R101.htm 240254011 - Disclosure - Fair Value Measurement - Additional Information (Details) Sheet http://sonder.com/role/FairValueMeasurementAdditionalInformationDetails Fair Value Measurement - Additional Information (Details) Details 101 false false R102.htm 240264012 - Disclosure - Fair Value Measurement - Schedule of Key Inputs Into Option Model for Private Placement Warrants and Public Warrants (Details) Sheet http://sonder.com/role/FairValueMeasurementScheduleofKeyInputsIntoOptionModelforPrivatePlacementWarrantsandPublicWarrantsDetails Fair Value Measurement - Schedule of Key Inputs Into Option Model for Private Placement Warrants and Public Warrants (Details) Details 102 false false R103.htm 240274013 - Disclosure - Fair Value Measurement - Schedule of Changes in Fair Value of Warrant Liabilities (Details) Sheet http://sonder.com/role/FairValueMeasurementScheduleofChangesinFairValueofWarrantLiabilitiesDetails Fair Value Measurement - Schedule of Changes in Fair Value of Warrant Liabilities (Details) Details 103 false false R104.htm 240284014 - Disclosure - Fair Value Measurement - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) Sheet http://sonder.com/role/FairValueMeasurementScheduleofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails Fair Value Measurement - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) Details 104 false false R105.htm 240304015 - Disclosure - Stockholders' Equity - Additional Information (Details) Sheet http://sonder.com/role/StockholdersEquityAdditionalInformationDetails Stockholders' Equity - Additional Information (Details) Details 105 false false R106.htm 240334016 - Disclosure - Subsequent Events - Additional Information (Details) Sheet http://sonder.com/role/SubsequentEventsAdditionalInformationDetails Subsequent Events - Additional Information (Details) Details 106 false false R107.htm 240364017 - Disclosure - Description of Business and Summary of Significant Accounting Policies (Details) Sheet http://sonder.com/role/DescriptionofBusinessandSummaryofSignificantAccountingPoliciesDetails Description of Business and Summary of Significant Accounting Policies (Details) Details http://sonder.com/role/DescriptionofBusinessandSummaryofSignificantAccountingPoliciesPolicies 107 false false R108.htm 240394018 - Disclosure - Revenue - Disaggregated Revenue by Channel (Details) Sheet http://sonder.com/role/RevenueDisaggregatedRevenuebyChannelDetails Revenue - Disaggregated Revenue by Channel (Details) Details 108 false false R109.htm 240424019 - Disclosure - Net Loss Per Common Share - Narrative (Details) Sheet http://sonder.com/role/NetLossPerCommonShareNarrativeDetails Net Loss Per Common Share - Narrative (Details) Details 109 false false R110.htm 240434020 - Disclosure - Net Loss Per Common Share - Schedule of Basic and Diluted Earnings per Share (Details) Sheet http://sonder.com/role/NetLossPerCommonShareScheduleofBasicandDilutedEarningsperShareDetails Net Loss Per Common Share - Schedule of Basic and Diluted Earnings per Share (Details) Details 110 false false R111.htm 240444021 - Disclosure - Net Loss Per Common Share - Schedule of Anti-Dilutive Securities (Details) Sheet http://sonder.com/role/NetLossPerCommonShareScheduleofAntiDilutiveSecuritiesDetails Net Loss Per Common Share - Schedule of Anti-Dilutive Securities (Details) Details 111 false false R112.htm 240474022 - Disclosure - Fair value measurement and financial instruments - Schedule of Financial Liabilities Measured on Recurring Basis (Details) Sheet http://sonder.com/role/FairvaluemeasurementandfinancialinstrumentsScheduleofFinancialLiabilitiesMeasuredonRecurringBasisDetails Fair value measurement and financial instruments - Schedule of Financial Liabilities Measured on Recurring Basis (Details) Details 112 false false R113.htm 240484023 - Disclosure - Fair value measurement and financial instruments - Financial Liabilities Measured at Fair Value (Details) Sheet http://sonder.com/role/FairvaluemeasurementandfinancialinstrumentsFinancialLiabilitiesMeasuredatFairValueDetails Fair value measurement and financial instruments - Financial Liabilities Measured at Fair Value (Details) Details 113 false false R114.htm 240514024 - Disclosure - Debt - Narrative (Details) Sheet http://sonder.com/role/DebtNarrativeDetails Debt - Narrative (Details) Details 114 false false R115.htm 240524025 - Disclosure - Debt - Schedule of Convertible Notes (Details) Notes http://sonder.com/role/DebtScheduleofConvertibleNotesDetails Debt - Schedule of Convertible Notes (Details) Details 115 false false R116.htm 240554026 - Disclosure - Preferred Stock Warrants - Schedule of Preferred Stock Warrants Outstanding (Details) Sheet http://sonder.com/role/PreferredStockWarrantsScheduleofPreferredStockWarrantsOutstandingDetails Preferred Stock Warrants - Schedule of Preferred Stock Warrants Outstanding (Details) Details 116 false false R117.htm 240564027 - Disclosure - Preferred Stock Warrants - Narrative (Details) Sheet http://sonder.com/role/PreferredStockWarrantsNarrativeDetails Preferred Stock Warrants - Narrative (Details) Details 117 false false R118.htm 240594028 - Disclosure - Leases - Schedule of Future Minimum Lease Payments (Details) Sheet http://sonder.com/role/LeasesScheduleofFutureMinimumLeasePaymentsDetails Leases - Schedule of Future Minimum Lease Payments (Details) Details 118 false false R119.htm 240604029 - Disclosure - Leases - Narrative (Details) Sheet http://sonder.com/role/LeasesNarrativeDetails Leases - Narrative (Details) Details 119 false false R120.htm 240624030 - Disclosure - Commitments and contingencies (Details) Sheet http://sonder.com/role/CommitmentsandcontingenciesDetails Commitments and contingencies (Details) Details http://sonder.com/role/Commitmentsandcontingencies 120 false false R121.htm 240664031 - Disclosure - Exchangeable shares and redeemable convertible preferred stock (Details) Sheet http://sonder.com/role/ExchangeablesharesandredeemableconvertiblepreferredstockDetails Exchangeable shares and redeemable convertible preferred stock (Details) Details http://sonder.com/role/ExchangeablesharesandredeemableconvertiblepreferredstockTables 121 false false R122.htm 240694032 - Disclosure - Common Stock - Narrative (Details) Sheet http://sonder.com/role/CommonStockNarrativeDetails Common Stock - Narrative (Details) Details 122 false false R123.htm 240704033 - Disclosure - Common Stock - Schedule of Shares of Common Stock Reserved for Future Issuance (Details) Sheet http://sonder.com/role/CommonStockScheduleofSharesofCommonStockReservedforFutureIssuanceDetails Common Stock - Schedule of Shares of Common Stock Reserved for Future Issuance (Details) Details 123 false false R124.htm 240734034 - Disclosure - Stockholders??? Deficit - Schedule of Stock-Based Compensation (Details) Sheet http://sonder.com/role/StockholdersDeficitScheduleofStockBasedCompensationDetails Stockholders??? Deficit - Schedule of Stock-Based Compensation (Details) Details 124 false false R125.htm 240744035 - Disclosure - Stockholders??? Deficit - Schedule of Fair Value Inputs for Options (Details) Sheet http://sonder.com/role/StockholdersDeficitScheduleofFairValueInputsforOptionsDetails Stockholders??? Deficit - Schedule of Fair Value Inputs for Options (Details) Details 125 false false R126.htm 240754036 - Disclosure - Stockholders??? Deficit - Narrative (Details) Sheet http://sonder.com/role/StockholdersDeficitNarrativeDetails Stockholders??? Deficit - Narrative (Details) Details 126 false false R127.htm 240774037 - Disclosure - Income Taxes (Details) Sheet http://sonder.com/role/IncomeTaxesDetails Income Taxes (Details) Details http://sonder.com/role/IncomeTaxes 127 false false R128.htm 240794038 - Disclosure - Related party transactions (Details) Sheet http://sonder.com/role/RelatedpartytransactionsDetails Related party transactions (Details) Details http://sonder.com/role/Relatedpartytransactions 128 false false R129.htm 240814039 - Disclosure - Subsequent events (Details) Sheet http://sonder.com/role/SubsequenteventsDetails Subsequent events (Details) Details http://sonder.com/role/Subsequentevents 129 false false R130.htm 240864040 - Disclosure - Summary of Significant Accounting Policies - Narrative (Details) Sheet http://sonder.com/role/SummaryofSignificantAccountingPoliciesNarrativeDetails Summary of Significant Accounting Policies - Narrative (Details) Details 130 false false R131.htm 240874041 - Disclosure - Summary of Significant Accounting Policies - Useful Lives of Property and Equipment, Net (Details) Sheet http://sonder.com/role/SummaryofSignificantAccountingPoliciesUsefulLivesofPropertyandEquipmentNetDetails Summary of Significant Accounting Policies - Useful Lives of Property and Equipment, Net (Details) Details 131 false false R132.htm 240904042 - Disclosure - Revenue - Disaggregated Revenue by Channel (Details) Sheet http://sonder.com/role/RevenueDisaggregatedRevenuebyChannelDetails_1 Revenue - Disaggregated Revenue by Channel (Details) Details 132 false false R133.htm 240914043 - Disclosure - Revenue - Disaggregated Revenues by Geographical Area (Details) Sheet http://sonder.com/role/RevenueDisaggregatedRevenuesbyGeographicalAreaDetails Revenue - Disaggregated Revenues by Geographical Area (Details) Details 133 false false R134.htm 240924044 - Disclosure - Revenue - Narrative (Details) Sheet http://sonder.com/role/RevenueNarrativeDetails Revenue - Narrative (Details) Details 134 false false R135.htm 240934045 - Disclosure - Revenue - Allowance for Doubtful Accounts (Details) Sheet http://sonder.com/role/RevenueAllowanceforDoubtfulAccountsDetails Revenue - Allowance for Doubtful Accounts (Details) Details 135 false false R136.htm 240964046 - Disclosure - Balance Sheet Details (Details) Sheet http://sonder.com/role/BalanceSheetDetailsDetails Balance Sheet Details (Details) Details http://sonder.com/role/BalanceSheetDetailsTables 136 false false R137.htm 240994047 - Disclosure - Fair value measurement and financial instruments - Schedule of Financial Liabilities Measured on Recurring Basis (Details) Sheet http://sonder.com/role/FairvaluemeasurementandfinancialinstrumentsScheduleofFinancialLiabilitiesMeasuredonRecurringBasisDetails_1 Fair value measurement and financial instruments - Schedule of Financial Liabilities Measured on Recurring Basis (Details) Details 137 false false R138.htm 241004048 - Disclosure - Fair value measurement and financial instruments - Financial Liabilities Measured at Fair Value (Details) Sheet http://sonder.com/role/FairvaluemeasurementandfinancialinstrumentsFinancialLiabilitiesMeasuredatFairValueDetails_1 Fair value measurement and financial instruments - Financial Liabilities Measured at Fair Value (Details) Details 138 false false R139.htm 241034049 - Disclosure - Property and equipment, net (Details) Sheet http://sonder.com/role/PropertyandequipmentnetDetails Property and equipment, net (Details) Details http://sonder.com/role/PropertyandequipmentnetTables 139 false false R140.htm 241054050 - Disclosure - Debt (Details) Sheet http://sonder.com/role/DebtDetails Debt (Details) Details http://sonder.com/role/DebtTables 140 false false R141.htm 241084051 - Disclosure - Preferred Stock Warrants - Schedule of Preferred Stock Warrants Outstanding (Details) Sheet http://sonder.com/role/PreferredStockWarrantsScheduleofPreferredStockWarrantsOutstandingDetails_1 Preferred Stock Warrants - Schedule of Preferred Stock Warrants Outstanding (Details) Details 141 false false R142.htm 241094052 - Disclosure - Preferred Stock Warrants - Narrative (Details) Sheet http://sonder.com/role/PreferredStockWarrantsNarrativeDetails_1 Preferred Stock Warrants - Narrative (Details) Details 142 false false R143.htm 241124053 - Disclosure - Leases - Schedule of Future Minimum Lease Payments (Details) Sheet http://sonder.com/role/LeasesScheduleofFutureMinimumLeasePaymentsDetails_1 Leases - Schedule of Future Minimum Lease Payments (Details) Details 143 false false R144.htm 241134054 - Disclosure - Leases - Narrative (Details) Sheet http://sonder.com/role/LeasesNarrativeDetails_1 Leases - Narrative (Details) Details 144 false false R145.htm 241154055 - Disclosure - Commitments and contingencies (Details) Sheet http://sonder.com/role/CommitmentsandcontingenciesDetails_1 Commitments and contingencies (Details) Details http://sonder.com/role/Commitmentsandcontingencies 145 false false R146.htm 241194056 - Disclosure - Exchangeable shares and redeemable convertible preferred stock (Details) Sheet http://sonder.com/role/ExchangeablesharesandredeemableconvertiblepreferredstockDetails_1 Exchangeable shares and redeemable convertible preferred stock (Details) Details http://sonder.com/role/ExchangeablesharesandredeemableconvertiblepreferredstockTables 146 false false R147.htm 241224057 - Disclosure - Common stock - Narrative (Details) Sheet http://sonder.com/role/CommonstockNarrativeDetails Common stock - Narrative (Details) Details 147 false false R148.htm 241234058 - Disclosure - Common stock - Schedule of Shares of Common Stock Reserved for Future Issuance (Details) Sheet http://sonder.com/role/CommonstockScheduleofSharesofCommonStockReservedforFutureIssuanceDetails Common stock - Schedule of Shares of Common Stock Reserved for Future Issuance (Details) Details 148 false false R149.htm 241264059 - Disclosure - Stockholders??? Deficit - Schedule of Stock-Based Compensation (Details) Sheet http://sonder.com/role/StockholdersDeficitScheduleofStockBasedCompensationDetails_1 Stockholders??? Deficit - Schedule of Stock-Based Compensation (Details) Details 149 false false R150.htm 241274060 - Disclosure - Stockholders??? Deficit - Narrative (Details) Sheet http://sonder.com/role/StockholdersDeficitNarrativeDetails_1 Stockholders??? Deficit - Narrative (Details) Details 150 false false R151.htm 241284061 - Disclosure - Stockholders??? Deficit - Schedule of Fair Value Inputs for Options (Details) Sheet http://sonder.com/role/StockholdersDeficitScheduleofFairValueInputsforOptionsDetails_1 Stockholders??? Deficit - Schedule of Fair Value Inputs for Options (Details) Details 151 false false R152.htm 241294062 - Disclosure - Stockholders??? Deficit - Schedule of Option Activity (Details) Sheet http://sonder.com/role/StockholdersDeficitScheduleofOptionActivityDetails Stockholders??? Deficit - Schedule of Option Activity (Details) Details 152 false false R153.htm 241324063 - Disclosure - Income taxes - Narrative (Details) Sheet http://sonder.com/role/IncometaxesNarrativeDetails Income taxes - Narrative (Details) Details 153 false false R154.htm 241334064 - Disclosure - Income taxes - Schedule of Provision for Income Taxes (Details) Sheet http://sonder.com/role/IncometaxesScheduleofProvisionforIncomeTaxesDetails Income taxes - Schedule of Provision for Income Taxes (Details) Details 154 false false R155.htm 241344065 - Disclosure - Income taxes - Schedule of Loss before Provision for Income Taxes, Domestic and Foreign (Details) Sheet http://sonder.com/role/IncometaxesScheduleofLossbeforeProvisionforIncomeTaxesDomesticandForeignDetails Income taxes - Schedule of Loss before Provision for Income Taxes, Domestic and Foreign (Details) Details 155 false false R156.htm 241354066 - Disclosure - Income taxes - Effective Income Tax Reconciliation (Details) Sheet http://sonder.com/role/IncometaxesEffectiveIncomeTaxReconciliationDetails Income taxes - Effective Income Tax Reconciliation (Details) Details 156 false false R157.htm 241364067 - Disclosure - Income taxes - Schedule of Deferred Tax Assets (Details) Sheet http://sonder.com/role/IncometaxesScheduleofDeferredTaxAssetsDetails Income taxes - Schedule of Deferred Tax Assets (Details) Details 157 false false R158.htm 241374068 - Disclosure - Income taxes - Schedule of Unrecognized Tax Benefits (Details) Sheet http://sonder.com/role/IncometaxesScheduleofUnrecognizedTaxBenefitsDetails Income taxes - Schedule of Unrecognized Tax Benefits (Details) Details 158 false false R159.htm 241404069 - Disclosure - Net Loss Per Common Share - Narrative (Details) Sheet http://sonder.com/role/NetLossPerCommonShareNarrativeDetails_1 Net Loss Per Common Share - Narrative (Details) Details 159 false false R160.htm 241414070 - Disclosure - Net Loss Per Common Share - Schedule of Basic and Diluted Earnings per Share (Details) Sheet http://sonder.com/role/NetLossPerCommonShareScheduleofBasicandDilutedEarningsperShareDetails_1 Net Loss Per Common Share - Schedule of Basic and Diluted Earnings per Share (Details) Details 160 false false R161.htm 241424071 - Disclosure - Net Loss Per Common Share - Schedule of Anti-Dilutive Securities (Details) Sheet http://sonder.com/role/NetLossPerCommonShareScheduleofAntiDilutiveSecuritiesDetails_1 Net Loss Per Common Share - Schedule of Anti-Dilutive Securities (Details) Details 161 false false R162.htm 241444072 - Disclosure - Related party transactions (Details) Sheet http://sonder.com/role/RelatedpartytransactionsDetails_1 Related party transactions (Details) Details http://sonder.com/role/Relatedpartytransactions 162 false false R163.htm 241464073 - Disclosure - Subsequent events (Details) Sheet http://sonder.com/role/SubsequenteventsDetails_1 Subsequent events (Details) Details http://sonder.com/role/Subsequentevents 163 false false R9999.htm Uncategorized Items - son-20220131.htm Sheet http://xbrl.sec.gov/role/uncategorizedFacts Uncategorized Items - son-20220131.htm Cover 164 false false All Reports Book All Reports son-20220131.htm exhibit107-exxfilingfeesx1.htm exhibit231-sx1resale.htm exhibit232-sx1resale.htm exhibit44-sx1resale.htm exhibit51-sx1resale.htm son-20220131.xsd son-20220131_cal.xml son-20220131_def.xml son-20220131_lab.xml son-20220131_pre.xml son-20220131_g1.jpg son-20220131_g10.jpg son-20220131_g11.jpg son-20220131_g12.jpg son-20220131_g13.jpg son-20220131_g14.jpg son-20220131_g15.jpg son-20220131_g16.jpg son-20220131_g2.jpg son-20220131_g3.jpg son-20220131_g4.jpg son-20220131_g5.jpg son-20220131_g6.jpg son-20220131_g7.jpg son-20220131_g8.jpg son-20220131_g9.jpg http://fasb.org/us-gaap/2021-01-31 http://xbrl.sec.gov/dei/2021 true true