Subsequent events (Details) - USD ($)			5 Months Ended	6 Months Ended	12 Months Ended
	Aug. 25, 2022	Aug. 05, 2022	Jun. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Subsequent Event [Line Items]
Debt payments				$ 398,000	$ 399,000
D-Wave Quantum, Inc.
Subsequent Event [Line Items]
Debt payments			$ 0
Subsequent Event
Subsequent Event [Line Items]
Equity interests acquired		100.00%
Cash acquired		$ 37,500,000
Issuance costs		11,500,000
Debt payments		20,800,000
Final payment fee		$ 1,000,000
Commitment Fee, Shares	254,360	127,180
Subsequent Event | D-Wave Quantum, Inc.
Subsequent Event [Line Items]
Equity interests acquired		100.00%
Cash acquired		$ 37,600,000
Subsequent Event | D-Wave Quantum, Inc. | ESPP
Subsequent Event [Line Items]
Maximum shares available (in shares)		8,036,455
Additional shares reserved for issuance, period		10 years
Additional shares reserved for issuance, percentage		1.00%
Additional shares reserved for issuance, annual increase		1,607,291
Subsequent Event | D-Wave Quantum, Inc. | 2022 Plan
Subsequent Event [Line Items]
Maximum shares available (in shares)		16,965,849
Additional shares reserved for issuance, period		10 years
Additional shares reserved for issuance, percentage		5.00%