v3.25.2
Derivative Financial Instruments - Schedule of Weighted-Average Rates Paid and Received for Interest Rate Swaps Outstanding (Detail)
Jun. 30, 2025
Financial Institution Counterparties [Member] | Weighted Average Interest Rate Paid [Member]  
Short-duration insurance contracts, discounted liabilities [Line Items]  
Non-hedging interest rate swaps – financial institution counterparties 5.16%
Financial Institution Counterparties [Member] | Weighted-Average Interest Rate Received [Member]  
Short-duration insurance contracts, discounted liabilities [Line Items]  
Non-hedging interest rate swaps – financial institution counterparties 6.10%
Customer Counterparties [Member] | Weighted Average Interest Rate Paid [Member]  
Short-duration insurance contracts, discounted liabilities [Line Items]  
Non-hedging interest rate swaps – customer counterparties 6.10%
Customer Counterparties [Member] | Weighted-Average Interest Rate Received [Member]  
Short-duration insurance contracts, discounted liabilities [Line Items]  
Non-hedging interest rate swaps – customer counterparties 5.16%