Basis of Presentation and Summary of Significant Accounting Policies - Other Narrative (Details) $ / shares in Units, $ in Millions			3 Months Ended		5 Months Ended	6 Months Ended		12 Months Ended
	Aug. 05, 2022 USD ($)	Jun. 16, 2022 USD ($) $ / shares	Jun. 30, 2022 USD ($) $ / shares	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) $ / shares	Jun. 30, 2022 USD ($) segment $ / shares shares	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	Jun. 30, 2022 CAD ($)	Dec. 31, 2021 CAD ($)
Accounting Policies [Line Items]
Common stock, par value (in usd per share) | $ / shares		$ 0.0001
Accumulated deficit			$ 350,083,000		$ 350,083,000	$ 350,083,000		$ 325,268,000
Working capital deficit			13,100,000		13,100,000	13,100,000
Net loss			13,198,000	$ 4,668,000		24,815,000	$ 13,496,000
Net cash outflows from operations						21,499,000	20,268,000
Gross proceeds						20,000,000		16,786,000
Cash and cash equivalents			10,466,000		10,466,000	10,466,000		9,483,000
Sale of stock		$ 150,000,000
Deferred offering costs			5,700,000		5,700,000	$ 5,700,000		1,200,000
Number of operating segments | segment						1
Number of reportable segments | segment						1
Foreign currency transaction gain			562,000	271,000		$ 366,000	567,000
Marketable investments, fair value			1,200,000		1,200,000	1,200,000		279,000	$ 10.2	$ 10.2
Marketable investments			1,200,000		$ 1,200,000	1,200,000		$ 5,000
SR&ED investment tax credit			$ 400,000	$ 400,000		$ 800,000	$ 600,000
Subsequent Event
Accounting Policies [Line Items]
Repayment of debt and final fee	$ 21,800,000
Gross proceeds from PIPE	49,000,000
Sale of stock	$ 40,000,000
D-Wave Quantum, Inc.
Accounting Policies [Line Items]
Issuance of common stock (in shares) | shares						100
Common stock, par value (in usd per share) | $ / shares			$ 0.0001		$ 0.0001	$ 0.0001
Net loss					$ 0
Cash and cash equivalents			$ 1		$ 1	$ 1