Merger (Details) $ / shares in Units, $ in Millions	Aug. 05, 2022 USD ($) $ / shares shares	Aug. 02, 2022 USD ($)
Schedule Of Reverse Recapitalization [Line Items]
Exchange ratio	1.4541326
Conversion ratio	1
Sale of stock, price (in usd per share) | $ / shares	$ 10.00
Proceeds from Issuance of Private Placement | $	$ 40.0
Commitment fee liability | $		$ 2.6
PIPE
Schedule Of Reverse Recapitalization [Line Items]
Issuance of common stock (in shares)	5,816,528
DCPM Class A common stock
Schedule Of Reverse Recapitalization [Line Items]
Stock exchanged in exchange of common stock (in shares)	902,213
DPCM Capital, Inc. Stockholders | DCPM Class A common stock
Schedule Of Reverse Recapitalization [Line Items]
Stock issued in exchange of common stock (in shares)	1,311,937
DPCM Capital, Inc. Stockholders | DCPM Class B common stock
Schedule Of Reverse Recapitalization [Line Items]
Stock issued in exchange of common stock (in shares)	3,015,575
Conversion ratio	1
D-Wave Systems Inc. Stockholders
Schedule Of Reverse Recapitalization [Line Items]
Aggregate consideration paid (in shares)	99,736,752