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Investments - Additional Information (Detail) - Investment Penny Warrants [Member] - Fisker Inc. [Member] shares in Millions, $ in Millions | 1 Months Ended
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Oct. 31, 2020 USD ($) shares
Schedule of Equity Method Investments [Line Items] |
Equity Method Investment Number of warrants subscribed | shares | 19.5
Vested During 2021 and 2022 [Member] |
Schedule of Equity Method Investments [Line Items] |
Payments to Acquire Equity Securities, FV-NI | $ | $ 320

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