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Initial Public Offering (Detail) - $ / shares |  | 4 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Oct. 09, 2020 | Dec. 31, 2020 | Jun. 30, 2021 | Jul. 16, 2021
Initial Public Offering [Line Items] |  |  |  |
Purchase price of per unit |  |  |  | $ 10.00
IPO [Member] | Empower Ltd [Member] |  |  |  |
Initial Public Offering [Line Items] |  |  |  |
Sale of stock units | 25,000,000 | 25,000,000 | 25,000,000 |
Purchase price of per unit | $ 10.00 | $ 10.00 | $ 10.00 |
Ordinary share exercise price per share |  | 11.50 | 11.50 |
Public warrant, description |  | Each unit consists of one Class A ordinary share and one-third of one redeemable warrant (“public warrant”). Each whole public warrant entitles the holder to purchase one Class A ordinary share at an exercise price of $11.50 per share, subject to adjustment (see Note 9). | Each unit consists of one Class A ordinary share and one-third of one redeemable warrant (“public warrant”). Each whole public warrant entitles the holder to purchase one Class A ordinary share at an exercise price of $11.50 per share, subject to adjustment (see Note 10). |

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