v3.21.2

Fair Value Measurements - Summary of assets and liabilities that are measured at fair value on a recurring basis (Detail) - USD ($) | Sep. 30, 2021 | Dec. 31, 2020
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Warrant liabilities | $ 8,507,835 | $ 10,929,780
Fair Value, Recurring [Member] | US Government Securities [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investments held in Trust Account—U.S. Treasury Securities | 414,042,541 | 414,011,571
Fair Value, Recurring [Member] | US Government Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investments held in Trust Account—U.S. Treasury Securities | 414,042,541 | 414,011,571
Fair Value, Recurring [Member] | Public Warrants [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Warrant liabilities | 8,383,500 | 10,764,000
Fair Value, Recurring [Member] | Public Warrants [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Warrant liabilities | 8,383,500 | 10,764,000
Fair Value, Recurring [Member] | Private Warrants [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Warrant liabilities | 124,335 | 165,780
Fair Value, Recurring [Member] | Private Warrants [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Warrant liabilities | $ 124,335 | $ 165,780

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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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