XML 102 R91.htm IDEA: XBRL DOCUMENT v3.25.3
Derivative Financial Instruments (Details) - USD ($)
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Derivative Financial Instruments          
Notional Amount $ 32,323,565,000   $ 32,323,565,000   $ 28,513,557,000
Estimated Fair Value Gain 226,359,000   226,359,000   161,490,000
Estimated Fair Value Loss 561,708,000   561,708,000   879,855,000
Fair value of the interest rate swap derivatives, other assets 225,200,000   225,200,000   160,300,000
Reduction in derivative asset fair value     336,500,000   719,400,000
Fair value of the interest rate swap derivatives, other liabilities 560,400,000   560,400,000   878,000,000
Estimated gain (loss) on fair value     (1,200,000)   (1,800,000)
Mortgage loan pipeline          
Obligation under forward commitments, the fair value of those obligations along with the fair value of derivative instruments associated with forward commitments          
Obligation 78,402,000   78,402,000   59,291,000
Expected closures          
Obligation under forward commitments, the fair value of those obligations along with the fair value of derivative instruments associated with forward commitments          
Obligation 69,715,000   69,715,000   53,177,000
Cash flow hedge | Borrower          
Derivative Financial Instruments          
Collateral provided 275,400,000   275,400,000    
Cash flow hedge | Counterparty          
Derivative Financial Instruments          
Collateral provided 77,500,000   77,500,000    
Cash flow hedge | Interest-bearing deposits | Counterparty          
Derivative Financial Instruments          
Cash collateral 27,900,000   27,900,000    
Economic hedges | Counterparty          
Derivative Financial Instruments          
Estimated Fair Value Gain   $ 27,000,000   $ 28,000,000  
Interest rate contracts          
Derivative Financial Instruments          
Notional Amount 28,000,000,000   28,000,000,000   25,200,000,000
Mortgage servicing rights hedging | Non-designated hedges          
Derivative Financial Instruments          
Notional Amount 174,000,000   174,000,000   129,000,000
Estimated Fair Value Loss 1,203,000   1,203,000   1,809,000
Mortgage loan pipeline commitments hedging          
Obligation under forward commitments, the fair value of those obligations along with the fair value of derivative instruments associated with forward commitments          
Obligation 1,217,000   1,217,000   751,000
Mortgage loan pipeline commitments hedging | Non-designated hedges          
Derivative Financial Instruments          
Notional Amount 105,000,000   105,000,000   88,000,000
Estimated Fair Value Gain 1,217,000   1,217,000   1,083,000
Estimated Fair Value Loss 145,000   145,000    
Forward commitments          
Derivative Financial Instruments          
Estimated Fair Value Loss (145,000)   (145,000)   333,000
Obligation under forward commitments, the fair value of those obligations along with the fair value of derivative instruments associated with forward commitments          
Obligation 105,000,000   105,000,000   88,000,000
Foreign exchange swaps          
Derivative Financial Instruments          
Gain or loss recorded 0 0 0 0  
Interest rate swap          
Derivative Financial Instruments          
Net gain (loss) 81,000 $ (621,000) (150,000) $ (235,000)  
Interest rate swap | Expected closures | Counterparty          
Derivative Financial Instruments          
Estimated Fair Value Loss 39,000,000   66,000,000    
Interest rate swap | Fair Value Hedging | Counterparty          
Derivative Financial Instruments          
Notional Amount 2,835,000   2,835,000   3,945,000
Estimated Fair Value Gain 51,000   51,000   107,000
Amortized cost basis of loans hedged 2,800,000   2,800,000   3,800,000
Interest rate swap | Non-designated hedges | Borrower          
Derivative Financial Instruments          
Notional Amount 14,094,070,000   14,094,070,000   12,649,905,000
Estimated Fair Value Gain 152,561,000   152,561,000   36,232,000
Estimated Fair Value Loss 560,360,000   560,360,000   878,046,000
Interest rate swap | Non-designated hedges | Counterparty          
Derivative Financial Instruments          
Notional Amount 13,899,660,000   13,899,660,000   12,559,707,000
Estimated Fair Value Gain 72,596,000   72,596,000   124,032,000
Total gross derivative instruments, before netting, Notional amount 1,851,685,000   1,851,685,000   1,858,693,000
Total gross derivative instruments, before netting, Estimated fair value gain     79,989,000   133,304,000
Total gross derivative instruments, before netting, Estimated fair value loss     4,652,000   708,000
Less: Netting adjustment, Notional amount 219,901,000   219,901,000   49,000,000
Less: Netting adjustment, Estimated fair value gain     (4,652,000)   (708,000)
Less: Netting adjustment, Estimated fair value loss     (4,652,000)   (708,000)
Total gross derivative instruments, after netting, Notional amount 1,851,685,000   1,851,685,000   1,858,693,000
Total gross derivative instruments, after netting, Estimated fair value gain     75,337,000   132,596,000
Master netting arrangement collateral obligation to return cash offset against derivative asset 27,900,000   27,900,000   53,900,000
Securities pledged 28,800,000   28,800,000   30,400,000
Master netting arrangement collateral obligation cash paid offset against derivative asset 1,700,000   1,700,000   1,900,000
Reduction in derivative asset fair value     336,500,000   719,400,000
Interest rate swap | Economic hedges | Counterparty          
Derivative Financial Instruments          
Notional Amount 4,048,000,000   4,048,000,000   3,083,000,000
Estimated Fair Value Gain $ (66,000)   $ (66,000)   $ 36,000