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Derivative Financial Instruments - Information about Fair Values of Derivative Instruments in Consolidated Statement of Income (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Derivatives not designated as hedging instruments, derivatives | $ 10,000 | $ 10,000 | $ 24,000 | $ 36,000
Interest rate swap agreements | Designated as Hedging Instrument | Fair value hedges: |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Derivatives in fair value hedging relationships, derivative | 130,000 | (61,000) | 52,000 | (95,000)
Derivatives in fair value hedging relationships, hedged item | $ (130,000) | $ 61,000 | $ (52,000) | $ 96,000
Interest rate swap agreements | Fixed Rate Long-Term Borrowings | Designated as Hedging Instrument | Fair value hedges: |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Other costs of operations | Other costs of operations | Other costs of operations | Other costs of operations
Derivatives in fair value hedging relationships, derivative | $ 130,000 | $ (61,000) | $ 52,000 | $ (95,000)
Derivatives in fair value hedging relationships, hedged item | (130,000) | 61,000 | (52,000) | 96,000
Interest rate swap agreements | Fixed Rate Available For Sale Securities | Designated as Hedging Instrument | Fair value hedges: |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Derivatives in fair value hedging relationships, derivative | 0 |  | 0 |
Derivatives in fair value hedging relationships, hedged item | 0 |  | 0 |
Interest Rate Contracts |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Derivatives not designated as hedging instruments, derivatives | 5,000 | 6,000 | 11,000 | 25,000
Foreign exchange and other option and futures contracts |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Derivatives not designated as hedging instruments, derivatives | $ 5,000 | $ 4,000 | $ 13,000 | $ 11,000

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- Definition Aggregate net gain and losses (whether realized or unrealized) of the hedged item in a fair value hedge recognized in the income statement. + References No definition available. + Details
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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A + Details
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- Definition Indicates line item in statement of income or comprehensive income that includes gain (loss) from derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A + Details
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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 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4E + Details
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- Definition Aggregate net gain and losses (whether realized or unrealized) on all derivative instruments held for trading purposes whether or not settled physically. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480463/815-10-45-9 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4F + Details
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