Merger- Narrative (Details) $ / shares in Units, $ in Thousands			3 Months Ended		9 Months Ended
	Aug. 05, 2022 USD ($) $ / shares shares	Aug. 02, 2022 USD ($)	Sep. 30, 2022 USD ($) shares	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) shares	Sep. 30, 2021 USD ($)	Aug. 04, 2022 shares	Dec. 31, 2021 USD ($) shares
Schedule Of Reverse Recapitalization [Line Items]
Exchange ratio	1.4541326
Sale of stock, price (in usd per share) | $ / shares	$ 10
Cash - PIPE Investment | $	$ 40,000
Liabilities | $			$ 37,921		$ 37,921			$ 29,590
Operations | $			$ 16,205	$ 10,793	$ 41,347	$ 31,074
Net proceeds received | $	$ 18,735
Common stock, outstanding (in shares)	110,007,972		110,377,357		110,377,357			2,817,498
Stock forfeited (in shares)							4,484,425
Conversion ratio	0.889657
Lincoln Park Purchase Agreement
Schedule Of Reverse Recapitalization [Line Items]
Issuance of common stock (in shares)	127,180				381,540
DCPM Class A common stock
Schedule Of Reverse Recapitalization [Line Items]
Stock exchanged (in shares)	902,213
DCPM Class A common stock subject to redemption
Schedule Of Reverse Recapitalization [Line Items]
Common stock, outstanding (in shares)							30,000,000
Stock redeemed (in shares)							29,097,787
DCPM Class B common stock
Schedule Of Reverse Recapitalization [Line Items]
Common stock, outstanding (in shares)	3,015,575						7,500,000
D-Wave Systems common stock
Schedule Of Reverse Recapitalization [Line Items]
Common stock, outstanding (in shares)							112,106,972
DPCM Capital, Inc. Stockholders
Schedule Of Reverse Recapitalization [Line Items]
Liability payable | $		$ 2,600
Other Assets | $		0
Liabilities | $		0
Operations | $		$ 0
D-Wave Systems Inc. Stockholders
Schedule Of Reverse Recapitalization [Line Items]
Exchange of common stock (in shares)	99,736,752
D-Wave Systems Inc. Stockholders | Exchangeable Shares
Schedule Of Reverse Recapitalization [Line Items]
Exchange of common stock (in shares)	48,409,601