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Fair value measurements - Summary financial assets measured at fair value on a recurring basis (Detail) - USD ($) | Mar. 31, 2022 | Feb. 14, 2022 | Feb. 09, 2022 | Feb. 04, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | --- | --- | --- | ---
Convertible Promissory Note [Member] |  |  |  |  |  |
Liabilities |  |  |  |  |  |
Convertible promissory note | $ 72,800 | $ 14,800 | $ 27,600 | $ 29,600 |  |
Level 3 |  |  |  |  |  |
Liabilities |  |  |  |  |  |
Warrant liability | 3,134,466 |  |  |  | $ 4,063,666 | $ 0
Level 3 | Convertible Promissory Note [Member] |  |  |  |  |  |
Liabilities |  |  |  |  |  |
Convertible promissory note |  | $ 14,800 | $ 27,600 | $ 29,600 |  |
Money Market investments |  |  |  |  |  |
Assets |  |  |  |  |  |
Money market investments | 317,582,318 |  |  |  | 317,581,791 |
Money Market investments | Level 1 |  |  |  |  |  |
Assets |  |  |  |  |  |
Money market investments | 317,582,318 |  |  |  | 317,581,791 |
Money Market investments | Level 3 |  |  |  |  |  |
Assets |  |  |  |  |  |
Money market investments |  |  |  |  |  |
Public Warrants |  |  |  |  |  |
Liabilities |  |  |  |  |  |
Warrant liability | 4,365,625 |  |  |  | 5,715,000 |
Public Warrants | Level 1 |  |  |  |  |  |
Liabilities |  |  |  |  |  |
Warrant liability | 4,365,625 |  |  |  | 5,715,000 |
Public Warrants | Level 3 |  |  |  |  |  |
Liabilities |  |  |  |  |  |
Warrant liability |  |  |  |  |  |
Private Placement Warrants |  |  |  |  |  |
Liabilities |  |  |  |  |  |
Warrant liability | 3,061,666 |  |  |  | 4,063,666 |
Private Placement Warrants | Level 1 |  |  |  |  |  |
Liabilities |  |  |  |  |  |
Warrant liability |  |  |  |  |  |
Private Placement Warrants | Level 3 |  |  |  |  |  |
Liabilities |  |  |  |  |  |
Warrant liability | $ 3,061,666 |  |  |  | $ 4,063,666 |

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- Definition Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock. + References No definition available. + Details
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- Definition Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities. + References No definition available. + Details
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- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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