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Revenue from contracts with customers - Change in Deferred Revenue (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Contract With Customer, Liability [Roll Forward] |  |  |
Balance at beginning of period | $ 2,719 | $ 4,713 |
Deferral of revenue | 3,554 | 4,092 |
Recognition of deferred revenue | (4,284) | (6,086) |
Balance at end of period | 1,989 | 2,719 | $ 4,713
DWave System [Member] |  |  |
Contract With Customer, Liability [Roll Forward] |  |  |
Balance at beginning of period | $ 2,719 | 4,713 | 4,921
Deferral of revenue |  | 4,092 | 4,513
Recognition of deferred revenue |  | (6,086) | (4,721)
Balance at end of period |  | $ 2,719 | $ 4,713

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- Definition Contract With Customer, Liability, Additions + References No definition available. + Details
Name: | qbts_ContractWithCustomerLiabilityAdditions
Namespace Prefix: | qbts_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Contract with Customer, Liability, Revenue Recognized, Including Opening Balance + References No definition available. + Details
Name: | qbts_ContractWithCustomerLiabilityRevenueRecognizedIncludingOpeningBalance
Namespace Prefix: | qbts_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Contract With Customer, Liability + References No definition available. + Details
Name: | qbts_ContractWithCustomerLiabilityRollForward
Namespace Prefix: | qbts_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130531-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130549-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130532-203044 + Details
Name: | us-gaap_ContractWithCustomerLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | dei_LegalEntityAxis=qbts_DwaveSystemMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |