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Derivative Financial Instruments - Schedule of Weighted-Average Rates Paid and Received for Interest Rate Swaps Outstanding (Detail) | Jun. 30, 2025
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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%

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-5 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-5 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-5 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-5 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-5 + Details
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