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Cover - USD ($)
 12 Months Ended
Dec. 31, 2024
Mar. 12, 2025
Jun. 30, 2024
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2024    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-41468    
Entity Registrant Name D-WAVE QUANTUM INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 88-1068854    
Entity Address, Address Line One 2650 East Bayshore Road    
Entity Address, City or Town Palo Alto    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 94303    
City Area Code 604    
Local Phone Number 630-1428    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status No    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company true    
Entity Ex Transition Period false    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] true    
Document Financial Statement Restatement Recovery Analysis [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 136,725,126
Entity Common Stock, Shares Outstanding   287,797,149  
Documents Incorporated by Reference
None.
    
Entity Central Index Key 0001907982    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Amendment Flag false    
Common stock, par value $0.0001 per share      
Document Information [Line Items]      
Title of 12(b) Security Common stock, par value $0.0001 per share    
Trading Symbol QBTS    
Security Exchange Name NYSE    
Warrants, each whole warrant exercisable for 1.4541326 shares of common stock at an exercise price of $11.50      
Document Information [Line Items]      
Title of 12(b) Security Warrants, each whole warrant exercisable for 1.4541326 shares of common stock at an exercise price of $11.50    
Trading Symbol QBTS.WT    
Security Exchange Name NYSE