CONSOLIDATED STATEMENTS OF MEZZANINE EQUITY AND STOCKHOLDERS’ DEFICIT - USD ($) $ in Thousands	Total	Sonder Legacy Warrants	Delayed Draw Warrants	Previously Reported	Additional Paid-in Capital	Additional Paid-in Capital Sonder Legacy Warrants	Additional Paid-in Capital Delayed Draw Warrants	Additional Paid-in Capital Previously Reported	Accumulated Translation Adjustment	Accumulated Translation Adjustment Previously Reported	Accumulated Deficit	Accumulated Deficit Previously Reported	Redeemable convertible preferred stock	Redeemable convertible preferred stock Previously Reported	Redeemable convertible preferred stock Revision of Prior Period, Adjustment	Redeemable convertible preferred stock Common Stock	Exchangeable preferred stock	Exchangeable preferred stock Previously Reported	Exchangeable preferred stock Revision of Prior Period, Adjustment	Common Stock Common Stock	Common Stock Common Stock Sonder Legacy Warrants	Common Stock Common Stock Previously Reported	Common Stock Common Stock Revision of Prior Period, Adjustment	Exchangeable AA Stock Common Stock	Exchangeable AA Stock Common Stock Previously Reported	Exchangeable AA Stock Common Stock Revision of Prior Period, Adjustment	Post-Combination Exchangeable Common Shares	Post-Combination Exchangeable Common Shares Common Stock	Post-Combination Exchangeable Common Shares Common Stock Previously Reported	Post-Combination Exchangeable Common Shares Common Stock Revision of Prior Period, Adjustment
Mezzanine equity, beginning balance (in shares) at Dec. 31, 2019													83,348,449	56,753,734	26,594,715		17,856,961	12,159,185	5,697,776
Mezzanine equity, beginning balance at Dec. 31, 2019													$ 314,967	$ 314,967			$ 45,203	$ 45,203
Increase (Decrease) in Mezzanine Equity
Series D Redeemable convertible Preferred Stock extension round (in shares)													69,960
Series D Redeemable convertible Preferred Stock extension round													$ 594
Issuance of Series E Convertible Preferred Stock/Exchangeable Series E Preferred Stock (in shares)													27,702,626				656,438
Issuance of Series E Convertible Preferred Stock/Exchangeable Series E Preferred Stock													$ 202,169				$ 4,530
Mezzanine equity, ending balance (in shares) at Dec. 31, 2020													111,121,035				18,513,399
Mezzanine equity, ending balance at Dec. 31, 2020													$ 517,730				$ 49,733
Beginning balance (in shares) at Dec. 31, 2019																				8,379,192		5,705,570	2,673,622	14,454,797	9,842,579	4,612,218		0	0	0
Beginning balance at Dec. 31, 2019	$ (258,670)			$ (258,670)	$ 5,032			$ 5,032	$ 6,406	$ 6,406	$ (270,109)	$ (270,109)								$ 1		$ 1		$ 0	$ 0			$ 0	$ 0
Increase (Decrease) in Stockholders' Deficit
Exchange of Series AA Special Voting shares for common stock (in shares)																595,107				(595,107)
Exercise of common stock options (in shares)																1,555,197
Exercise of common stock options	1,643				1,643
Stock-based compensation	7,223				7,223
Components of comprehensive loss:
Net loss	(250,316)										(250,316)
Change in cumulative translation adjustment	(740)								(740)
Ending balance (in shares) at Dec. 31, 2020																				10,529,496				13,859,690				0
Ending balance at Dec. 31, 2020	(500,860)				13,898				5,666		(520,425)									$ 1				$ 0				$ 0
Increase (Decrease) in Mezzanine Equity
Issuance of Series E Convertible Preferred Stock/Exchangeable Series E Preferred Stock (in shares)													136,398
Issuance of Series E Convertible Preferred Stock/Exchangeable Series E Preferred Stock													$ 1,020
Exchange of Exchangeable Preferred Stock to Convertible Preferred Stock (in shares)													13,991				(13,991)
Mezzanine equity, ending balance (in shares) at Dec. 31, 2021													111,271,424	75,767,082			18,499,408
Mezzanine equity, ending balance at Dec. 31, 2021	$ 568,483												$ 518,750				$ 49,733
Increase (Decrease) in Stockholders' Deficit
Exchange of Series AA Special Voting shares for common stock (in shares)																23,744				(23,744)
Exercise of common stock options (in shares)	2,225,859																			2,116,610
Exercise of common stock options	$ 3,841				3,841
Exercise of common stock warrants (in shares)																				82,352
Exercise of common stock warrants	120				120
Stock-based compensation	25,247				25,247
Components of comprehensive loss:
Net loss	(294,387)										(294,387)
Change in cumulative translation adjustment	1,633								1,633
Ending balance (in shares) at Dec. 31, 2021																				12,752,202				13,835,946				0
Ending balance at Dec. 31, 2021	(764,406)				43,106				7,299		(814,812)									$ 1				$ 0				$ 0
Increase (Decrease) in Mezzanine Equity
Conversion of preferred stock (in shares)													(111,271,424)
Conversion of preferred stock													$ (518,750)
Conversion of exchangeable stock in connection with the business combination (in shares)																	(18,499,408)
Conversion of exchangeable stock in connection with the business combination																	$ (49,733)
Mezzanine equity, ending balance (in shares) at Dec. 31, 2022													0				0
Mezzanine equity, ending balance at Dec. 31, 2022	0												$ 0				$ 0
Increase (Decrease) in Stockholders' Deficit
Conversion of Sonder Legacy Warrants from liabilities to equity	2,111				2,111
CEO promissory note settlement (in shares)																				(2,725,631)
Conversion of Sonder Legacy Warrants (in shares)																					155,239
Conversion of Sonder Legacy Warrants		$ 1,243				$ 1,243
Conversion of convertible note (in shares)																				19,017,105
Conversion of convertible note	159,173				159,172															$ 1
Conversion of preferred stock (in shares)																				111,271,424
Conversion of preferred stock	$ 518,761				518,750															$ 11
Exercise of common stock options (in shares)	931,362																			931,362
Exercise of common stock options	$ 1,620				1,620
Issuance of common stock in connection with Business Combination and PIPE offering (in shares)																				43,845,835
Issuance of common stock in connection with the business combination and PIPE offering	267,362				267,355															$ 7
Assumption of SPAC Warrants upon consummation of business combination	(25,985)				(25,985)
Earn Out liability recognized upon consummation of business combination	(98,117)				(98,117)
Issuance of Delayed Draw Warrants			$ 5,598				$ 5,598
Conversion of exchangeable stock in connection with the business combination (in shares)																								(13,835,946)				32,335,354
Conversion of exchangeable stock in connection with the business combination	49,733				49,733
Vesting of restricted stock units (in shares)																				1,200,657
Vesting of restricted stock units	58				58
Conversion of exchangeable stock (in shares)																				11,946,138				0				(11,946,138)
Conversion of exchangeable stock	1				0															$ 1
Stock-based compensation	22,957				22,957
Components of comprehensive loss:
Net loss	(165,742)										(165,742)
Change in cumulative translation adjustment	5,686								5,686
Ending balance (in shares) at Dec. 31, 2022																				198,394,331				0			20,389,216	20,389,216
Ending balance at Dec. 31, 2022	$ (19,947)				$ 947,601				$ 12,985		$ (980,554)									$ 21				$ 0				$ 0