Commitments and contingencies - Additional Information (Detail) - Underwriting Agreement [Member] $ / shares in Units, $ in Millions	8 Months Ended
	Dec. 31, 2021 USD ($) $ / shares shares
Other Commitments [Line Items]
Term of option for underwriters to purchase additional Units to cover over-allotments	45 days
Additional units that can be purchased to cover over-allotments | shares	3,000,000
Underwriting discount per unit | $ / shares	$ 0.20
Underwriting discount payable | $	$ 4.6
Deferred underwriting commission payable per unit | $ / shares	$ 0.35
Deferred underwriting commission payable non current | $	$ 8.1