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Balance sheet details - Schedule Of Inventory Current (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Dec. 31, 2020
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Total inventories $ 2,533 $ 2,114  
DWave System [Member]      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Raw materials   2,103 $ 2,516
Work-in-process   11 5
Total inventories   $ 2,114 $ 2,521