Basis of Presentation and Summary of Significant Accounting Policies - Other Narrative (Details)			4 Months Ended	12 Months Ended
	Apr. 13, 2023 USD ($)	Aug. 05, 2022 USD ($) shares	Apr. 18, 2023 shares	Dec. 31, 2022 USD ($) segment $ / shares shares	Dec. 31, 2021 USD ($) $ / shares	Dec. 31, 2020 USD ($)	Feb. 13, 2023 USD ($)	Oct. 26, 2022 USD ($)	Jun. 16, 2022 USD ($) $ / shares	Mar. 03, 2022 USD ($)
Accounting Policies [Line Items]
Number of board members | segment				7
Common stock, par value (in usd per share) | $ / shares				$ 0.0001	$ 0.0001
Accumulated deficit				$ 376,797,000	$ 325,268,000
Net loss				51,529,000	31,545,000	$ 10,019,000
Net cash outflows from operations				45,226,000	34,800,000	29,287,000
Cash				7,065,000	9,483,000
Working capital deficit				(1,900,000)
Gross proceeds received from Business Combination		$ 49,000,000
Debt payments				21,511,000	31,000	0
Payment of merger transactions costs, including costs paid on behalf of related party		14,200,000
ELOC, right to sell common stock								$ 150,000,000.0	$ 150,000,000
ELOC, ownership restriction percentage									9.90%
ELOC, floor stock price (in usd per share) | $ / shares									$ 1.00
ELOC, proceeds from share issuance, cumulative				$ 4,200,000
Cap on common stock issuable per warrant				0.361
Number of operating segments | segment				1
Number of reportable segments | segment				1
Foreign currency transaction gain				$ 1,200,000	600,000	600,000
Off-the-shelf software, useful life				3 years
Marketable investments				$ 1,200,000	1,200,000
Warrants, quoted price (in usd per share) | $ / shares				$ 0.11
Warrants outstanding (in shares) | shares				17,916,609
SR&ED investment tax credit				$ 100,000	1,500,000	2,100,000
Government assistance, interest benefit				0	7,200,000	12,000,000.0
Advertising costs				$ 800,000	900,000	$ 1,000,000.0
Subsequent Event
Accounting Policies [Line Items]
ELOC, right to sell common stock							$ 35,000,000.0
Board member designated by DCPM
Accounting Policies [Line Items]
Number of board members | segment				1
Board member retained from D-Wave Systems' board
Accounting Policies [Line Items]
Number of board members | segment				3
Independent board members
Accounting Policies [Line Items]
Number of board members | segment				3
Venture Loan | Other notes payable
Accounting Policies [Line Items]
Debt payments		$ 21,800,000		$ 21,808,000	$ 0
Aggregate principal amount										$ 25,000,000
Term Loan | Line of Credit | Subsequent Event
Accounting Policies [Line Items]
Aggregate principal amount	$ 50,000,000
Debt, drawdown fee percentage	2.00%
Interest rate	10.00%
Debt, interest rate, payable in kind	10.00%
Debt, premium payment, percentage of amount prepaid from common stock issuance proceeds	10.00%
Term Loan | Line of Credit | Subsequent Event | Debt Instrument, Repayment Period One
Accounting Policies [Line Items]
Debt, prepayment premium, percentage	3.00%
Term Loan | Line of Credit | Subsequent Event | Debt Instrument, Repayment Period Two
Accounting Policies [Line Items]
Debt, prepayment premium, percentage	2.00%
Term Loan | Line of Credit | Subsequent Event | Debt Instrument, Repayment Period Three
Accounting Policies [Line Items]
Debt, prepayment premium, percentage	1.00%
Term Loan | Line of Credit | Subsequent Event | Debt Instrument, Tranche One
Accounting Policies [Line Items]
Aggregate principal amount	$ 15,000,000
Term Loan | Line of Credit | Subsequent Event | Debt Instrument, Tranche Two
Accounting Policies [Line Items]
Aggregate principal amount	15,000,000
Term Loan | Line of Credit | Subsequent Event | Debt Instrument, Tranche Three
Accounting Policies [Line Items]
Aggregate principal amount	20,000,000
Debt, subject to closing non-dilutive financing, amount	$ 25,000,000
ELOC
Accounting Policies [Line Items]
Issuance of stock (in shares) | shares		127,180
ELOC | Subsequent Event
Accounting Policies [Line Items]
Issuance of stock (in shares) | shares			13,239,654
ELOC | Purchase Agreement
Accounting Policies [Line Items]
Issuance of stock (in shares) | shares				1,878,806
D-Wave Systems Existing Stockholders
Accounting Policies [Line Items]
Voting interest				91.00%