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Leases - Summary of Lease Costs (Detail) - D-Wave Systems Inc. [Member] - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Total lease costs | $ 1,324 | $ 1,426
Weighted average remaining lease term in years | 2 years 10 months 20 days | 2 years 4 months 20 days
Weighted average discount rate | 18.00% | 20.00%
Research and development |  |
Total lease costs | $ 268 | $ 268
General and administrative |  |
Total lease costs | $ 1,057 | $ 1,158

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