Fair Value Measurements - Summary of Changes in Fair Value of Warrant Liabilities (Parenthetical) (Detail) $ in Millions |
4 Months Ended |
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Dec. 31, 2020
USD ($)
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| Changes In Fair Value Of Warrant Liabilities [Abstract] | |
| Fair value measurement with unobservable inputs reconciliation recurring basis liabilities transfers out of level 3 | $ 10.2 |
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- References No definition available.
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- Definition Amount of transfers of financial instrument classified as a liability out of level 3 of the fair value hierarchy. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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