v3.26.1
Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Cash Flows From Operating Activities: [Abstract]    
Net income $ 155,720 $ 119,771
Adjustments to reconcile net income to net cash used in operating activities: [Abstract]    
Provision for credit losses 0 0
Change in fair value of mortgage servicing rights due to market assumption changes (8,155) 7,240
Change in the fair value of mortgage servicing rights due to principal payments 10,153 5,918
Net unrealized losses (gains) from derivative contracts (36,610) 49,111
Share-based compensation 5,787 5,870
Depreciation and amortization 27,206 27,284
Net amortization of discounts and premiums (12,409) (12,622)
Net losses (gains) on financial instruments and other losses (gains), net 216 725
Net loss (gain) on mortgage loans held for sale (1,799) (2,450)
Mortgage loans originated for sale (230,858) (159,816)
Proceeds from sale of mortgage loans held for sale 224,541 160,342
Capitalized mortgage servicing rights (4,010) (2,509)
Change in trading and fair value option securities (335,403) (952,339)
Change in receivables (73,069) 4,337
Change in other assets (45,681) 5,115
Change in other liabilities 75,693 764,282
Net cash provided by (used in) operating activities (248,678) 20,259
Cash Flows From Investing Activities: [Abstract]    
Proceeds from maturities or redemptions of investment securities 64,048 63,116
Proceeds from maturities or redemptions of available-for-sale securities 650,700 553,866
Purchases of available-for-sale securities (656,736) (619,755)
Change in amount receivable on unsettled available-for-sale securities transactions (787) (34,926)
Loans originated, net of principal collected (535,180) 443,789
Net proceeds from derivative asset contracts (12,657) (19,041)
Net change in restricted equity securities (133,152)  
Net change in restricted equity securities   90,986
Proceeds from disposition of assets 8,826 4,918
Purchases of assets (35,733) (48,223)
Net cash provided by (used in) investing activities (650,671) 434,730
Cash Flows From Financing Activities: [Abstract]    
Net change in demand deposits, transaction deposits, and savings accounts (845,684) 159,425
Net change in time deposits 87,726 (68,982)
Net change in other borrowed funds 2,219,770 (339,662)
Net payments on derivative liability contracts (7,042) 19,835
Net change in derivative margin accounts (766,425) (290,126)
Change in amount due on unsettled available-for-sale securities transactions 13,501 89,399
Issuance of common and treasury stock, net (10,564) (5,422)
Repurchase of common stock 0 (994)
Dividends paid (37,628) (36,468)
Net cash provided by (used in) financing activities 653,654 (472,995)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total (245,695) (18,006)
Cash and cash equivalents at beginning of period 1,658,102 1,434,701
Cash and cash equivalents at end of period 1,412,407 1,416,695
Supplemental Cash Flow Information: [Abstract]    
Cash paid for interest 270,140 302,067
Cash paid for federal taxes 0 0
Cash paid for state taxes 1,219 1,470
Net loans and bank premises transferred to repossessed real estate and other assets 4,694 0
Residential mortgage loans guaranteed by U.S. government agencies that became eligible for repurchase during the period 11,548 19,736
Conveyance of other real estate owned guaranteed by U.S. government agencies $ 2,065 $ 755