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Contingencies - Additional Information (Detail) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2022 | Dec. 31, 2021
Other Commitments [Line Items] |  |
Guarantees | $ 5.9 | $ 4.6
Maximum [Member] |  |
Other Commitments [Line Items] |  |
Fixed maturity guarantee remaining term | 4 years |

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- Details
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