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Commitments and Contingencies - Additional Information (Detail) - Letter of Credit [Member] $ in Millions	Sep. 30, 2025 USD ($)
Loss Contingencies [Line Items]
Letters of credit for insurance carriers and equity investment	$ 14.7
Equity Investment in Cannes, France [Member]
Loss Contingencies [Line Items]
Letters of credit for insurance carriers and equity investment	12.9
Asset Pledged as Collateral without Right [Member]
Loss Contingencies [Line Items]
Letters of credit for insurance carriers and equity investment	$ 1.8

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Amount, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity), and investment in debt security measured at fair value with change in fair value recognized in net income (trading).

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