v3.26.1
Cover - shares
6 Months Ended
Jun. 30, 2026
Aug. 05, 2026
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
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 650  
Local Phone Number 285-2881  
Title of 12(b) Security Common stock, par value $0.0001 per share  
Trading Symbol QBTS  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   369,263,837
Entity Central Index Key 0001907982  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Amendment Flag false