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Commitments, Contingencies and Off-Balance Sheet Arrangements - Off-Balance Sheet Commitments (Detail)
$ in Millions
 12 Months Ended
Dec. 31, 2024
USD ($)
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]  
Amount of Commitment Expiration by Period - 2025 $ 0.7
Amount of Commitment Expiration by Period - Thereafter 55.0
Total Amounts Committed 55.7
Financial Guarantees [Member]  
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]  
Amount of Commitment Expiration by Period - 2025 0.7
Amount of Commitment Expiration by Period - Thereafter 32.0
Total Amounts Committed 32.7
Letters of Credit [Member]  
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items]  
Amount of Commitment Expiration by Period - Thereafter 23.0
Total Amounts Committed $ 23.0