Description of Business and Basis of Presentation (Details)					3 Months Ended	5 Months Ended	11 Months Ended
	Nov. 01, 2022	Apr. 29, 2022 USD ($)	Mar. 11, 2021 USD ($) $ / shares shares	Dec. 21, 2020 $ / shares shares	Jun. 15, 2023 USD ($)	Sep. 30, 2022 USD ($) $ / shares shares	Mar. 15, 2023 USD ($)	Dec. 31, 2021 USD ($) $ / shares shares	Mar. 10, 2021 $ / shares
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accumulated other comprehensive loss | $						$ 399,740,000		$ 303,356,000
Schedule of Reverse Recapitalization [Line Items]
Common stock, shares outstanding (in shares)			161,449,205			184,190,016		172,200,417
Common stock, shares issued (in shares)						184,190,016		172,200,417
Common stock, par value (in dollars per share) | $ / shares			$ 0.0001	$ 0.0001		$ 0.0001		$ 0.0001
Warrants outstanding (in shares)			15,999,996
Preferred stock, par value (in dollars per share) | $ / shares						$ 0.0001
Common stock, deemed value (in dollars per share) | $ / shares			$ 10.00
Gross proceeds from merger and private offering | $			$ 299,900,000
Pre-merger cost | $			8,500,000
Offering cost | $			26,600,000
Long-term debt | $						$ 20,000,000
Hercules Loan and Security Agreement | Term Loan
Schedule of Reverse Recapitalization [Line Items]
Revolving line of credit, maximum borrowing capacity | $		$ 50,000,000
Long-term debt | $		$ 20,000,000
Covenant terms, revenue threshold, period		12 months
Hercules Loan and Security Agreement | Term Loan | Subsequent Event
Schedule of Reverse Recapitalization [Line Items]
Covenant terms, revenue threshold, period	12 months
Hercules Loan and Security Agreement | Term Loan | Forecast
Schedule of Reverse Recapitalization [Line Items]
Additional borrowing capacity | $					$ 10,000,000		$ 20,000,000
Private Placement
Schedule of Reverse Recapitalization [Line Items]
Common stock, deemed value (in dollars per share) | $ / shares				$ 10.00
Sale of stock, number of shares issued in transaction (in shares)				10,000,000
Sale of stock, aggregate commitment amount | $			$ 100,000,000
At The Market Program
Schedule of Reverse Recapitalization [Line Items]
Common stock, deemed value (in dollars per share) | $ / shares						$ 2.08
Sale of stock, number of shares issued in transaction (in shares)						7,833,709
Sale of stock, authorized amount | $		$ 150,000,000
Proceeds from issuance of common stock | $						$ 16,800,000
Common Stock
Schedule of Reverse Recapitalization [Line Items]
Stock converted (in shares)			150,000,000
CLA | CLA Warrants
Schedule of Reverse Recapitalization [Line Items]
Warrants outstanding (in shares)				10,000,000
CLA | Private Placement Warrants
Schedule of Reverse Recapitalization [Line Items]
Warrants outstanding (in shares)				6,000,000
CLA | Conversion of Class A Common Stock to Common Stock
Schedule of Reverse Recapitalization [Line Items]
Ordinary shares, conversion ratio				1
CLA | Conversion of Warrant to Ouster Common Stock
Schedule of Reverse Recapitalization [Line Items]
Warrant, conversion ratio				1
CLA | Conversion of Canceled CLA Units to Ouster Common Stock
Schedule of Reverse Recapitalization [Line Items]
Unit, conversion ratio				1
CLA | Conversion of Canceled CLA Units to Public Warrant
Schedule of Reverse Recapitalization [Line Items]
Unit, conversion ratio				0.5
CLA | Common Class B
Schedule of Reverse Recapitalization [Line Items]
Common stock, shares outstanding (in shares)				5,000,000
Common stock, shares issued (in shares)				5,000,000
Common stock, par value (in dollars per share) | $ / shares				$ 0.0001
CLA | Common Class A
Schedule of Reverse Recapitalization [Line Items]
Common stock, shares outstanding (in shares)				25,000,000
Common stock, shares issued (in shares)				25,000,000
Common stock, par value (in dollars per share) | $ / shares				$ 0.0001
OTI
Schedule of Reverse Recapitalization [Line Items]
Common stock, par value (in dollars per share) | $ / shares									$ 0.00001
OTI | Series B Preferred Stock Converted to Common Stock
Schedule of Reverse Recapitalization [Line Items]
Preferred stock, conversion ratio									1
OTI | Series B Redeemable Convertible Preferred Stock
Schedule of Reverse Recapitalization [Line Items]
Preferred stock, par value (in dollars per share) | $ / shares									$ 0.00001