v3.26.1
LOANS, LEASES, AND ALLOWANCE FOR CREDIT LOSSES (Summary of Outstanding Loan Balances (Accruing and Nonaccruing) Categorized by Credit Quality Indicators - Current Year) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Total loans      
2026 $ 2,664   $ 10,252
2025 9,780   7,205
2024 6,771   5,114
2023 4,783   8,824
2022 8,421   5,665
Prior 14,134   9,135
Revolving loans amortized cost basis 14,139   14,014
Revolving loans converted to term loans amortized cost basis 620   691
Total loans 61,312   60,900
Gross charge-offs by year of loan origination      
2026 0 $ 0  
2025 4 0  
2024 0 1  
2023 0 0  
2022 0 2  
Prior 2 11  
Revolving loans gross charge-offs 5 10  
Revolving loans converted to term loans gross charge-offs 0 0  
Total 11 24  
Commercial:      
Total loans      
2026 1,448   5,491
2025 5,244   4,156
2024 3,840   2,395
2023 2,281   3,277
2022 3,118   2,825
Prior 6,938   4,502
Revolving loans amortized cost basis 8,703   8,691
Revolving loans converted to term loans amortized cost basis 286   342
Total loans 31,858   31,679
Gross charge-offs by year of loan origination      
Total 7 19  
Commercial real estate:      
Total loans      
2026 831   3,542
2025 3,343   1,820
2024 1,871   1,741
2023 1,619   2,286
2022 2,095   1,010
Prior 2,620   1,790
Revolving loans amortized cost basis 1,067   974
Revolving loans converted to term loans amortized cost basis 212   233
Total loans 13,658   13,396
Gross charge-offs by year of loan origination      
Total 0 0  
Consumer:      
Total loans      
2026 385   1,219
2025 1,193   1,229
2024 1,060   978
2023 883   3,261
2022 3,208   1,830
Prior 4,576   2,843
Revolving loans amortized cost basis 4,369   4,349
Revolving loans converted to term loans amortized cost basis 122   116
Total loans 15,796   15,825
Gross charge-offs by year of loan origination      
2026 0 0  
2025 0 0  
2024 0 0  
2023 0 0  
2022 0 1  
Prior 1 1  
Revolving loans gross charge-offs 3 3  
Revolving loans converted to term loans gross charge-offs 0 0  
Total 4 5  
Commercial and industrial | Commercial:      
Total loans      
2026 937   3,824
2025 3,622   2,232
2024 2,026   1,242
2023 1,167   992
2022 898   399
Prior 996   761
Revolving loans amortized cost basis 8,433   8,431
Revolving loans converted to term loans amortized cost basis 184   230
Total loans 18,263   18,111
Gross charge-offs by year of loan origination      
2026 0 0  
2025 4 0  
2024 0 1  
2023 0 0  
2022 0 1  
Prior 1 10  
Revolving loans gross charge-offs 2 7  
Revolving loans converted to term loans gross charge-offs 0 0  
Total 7 19  
Owner-occupied | Commercial:      
Total loans      
2026 396   1,125
2025 1,131   1,307
2024 1,182   744
2023 712   1,540
2022 1,496   1,575
Prior 4,075   2,653
Revolving loans amortized cost basis 264   259
Revolving loans converted to term loans amortized cost basis 67   71
Total loans 9,323   9,274
Municipal | Commercial:      
Total loans      
2026 115   542
2025 491   617
2024 632   409
2023 402   745
2022 724   851
Prior 1,867   1,088
Revolving loans amortized cost basis 6   1
Revolving loans converted to term loans amortized cost basis 35   41
Total loans 4,272   4,294
Term | Commercial real estate:      
Total loans      
2026 747   3,043
2025 2,734   1,266
2024 1,367   1,360
2023 1,372   2,239
2022 2,031   1,009
Prior 2,618   1,789
Revolving loans amortized cost basis 365   344
Revolving loans converted to term loans amortized cost basis 153   184
Total loans 11,387   11,234
Construction and land development | Commercial real estate:      
Total loans      
2026 84   499
2025 609   554
2024 504   381
2023 247   47
2022 64   1
Prior 2   1
Revolving loans amortized cost basis 702   630
Revolving loans converted to term loans amortized cost basis 59   49
Total loans 2,271   2,162
1-4 family residential | Consumer:      
Total loans      
2026 346   918
2025 809   852
2024 719   872
2023 812   3,159
2022 3,151   1,821
Prior 4,569   2,840
Revolving loans amortized cost basis 0   0
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 10,406   10,462
Gross charge-offs by year of loan origination      
2026   0  
2025   0  
2024   0  
2023   0  
2022   1  
Prior   1  
Revolving loans gross charge-offs   0  
Revolving loans converted to term loans gross charge-offs   0  
Total   2  
Home equity credit line | Consumer:      
Total loans      
2026 0   0
2025 0   0
2024 0   0
2023 0   0
2022 0   0
Prior 0   0
Revolving loans amortized cost basis 3,855   3,835
Revolving loans converted to term loans amortized cost basis 121   115
Total loans 3,976   3,950
Construction and other consumer real estate | Consumer:      
Total loans      
2026 21   246
2025 340   351
2024 318   87
2023 56   91
2022 48   5
Prior 3   2
Revolving loans amortized cost basis 0   0
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 786   782
Bankcard and other revolving plans | Consumer:      
Total loans      
2026 0   0
2025 0   0
2024 0   0
2023 0   0
2022 0   0
Prior 0   0
Revolving loans amortized cost basis 514   514
Revolving loans converted to term loans amortized cost basis 1   1
Total loans 515   515
Gross charge-offs by year of loan origination      
2026 0 0  
2025 0 0  
2024 0 0  
2023 0 0  
2022 0 0  
Prior 0 0  
Revolving loans gross charge-offs 3 2  
Revolving loans converted to term loans gross charge-offs 0 0  
Total 3 2  
Other | Consumer:      
Total loans      
2026 18   55
2025 44   26
2024 23   19
2023 15   11
2022 9   4
Prior 4   1
Revolving loans amortized cost basis 0   0
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 113   116
Gross charge-offs by year of loan origination      
2026 0 0  
2025 0 0  
2024 0 0  
2023 0 0  
2022 0 0  
Prior 1 0  
Revolving loans gross charge-offs 0 1  
Revolving loans converted to term loans gross charge-offs 0 0  
Total 1 $ 1  
Pass | Commercial and industrial | Commercial:      
Total loans      
2026 871   3,746
2025 3,487   2,058
2024 1,873   1,143
2023 1,030   898
2022 827   350
Prior 892   698
Revolving loans amortized cost basis 8,193   8,141
Revolving loans converted to term loans amortized cost basis 154   197
Total loans 17,327   17,231
Pass | Owner-occupied | Commercial:      
Total loans      
2026 391   1,112
2025 1,113   1,234
2024 1,115   727
2023 697   1,414
2022 1,366   1,492
Prior 3,892   2,515
Revolving loans amortized cost basis 234   227
Revolving loans converted to term loans amortized cost basis 63   67
Total loans 8,871   8,788
Pass | Municipal | Commercial:      
Total loans      
2026 115   542
2025 488   614
2024 632   409
2023 402   745
2022 724   849
Prior 1,865   1,070
Revolving loans amortized cost basis 6   1
Revolving loans converted to term loans amortized cost basis 35   41
Total loans 4,267   4,271
Pass | Term | Commercial real estate:      
Total loans      
2026 615   2,643
2025 2,456   1,223
2024 1,311   1,167
2023 1,132   1,741
2022 1,612   956
Prior 2,506   1,747
Revolving loans amortized cost basis 364   318
Revolving loans converted to term loans amortized cost basis 138   140
Total loans 10,134   9,935
Pass | Construction and land development | Commercial real estate:      
Total loans      
2026 84   446
2025 577   540
2024 471   375
2023 241   47
2022 64   1
Prior 2   1
Revolving loans amortized cost basis 698   624
Revolving loans converted to term loans amortized cost basis 59   49
Total loans 2,196   2,083
Pass | 1-4 family residential | Consumer:      
Total loans      
2026 346   917
2025 808   847
2024 716   867
2023 806   3,144
2022 3,135   1,808
Prior 4,525   2,812
Revolving loans amortized cost basis 0   0
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 10,336   10,395
Pass | Home equity credit line | Consumer:      
Total loans      
2026 0   0
2025 0   0
2024 0   0
2023 0   0
2022 0   0
Prior 0   0
Revolving loans amortized cost basis 3,818   3,799
Revolving loans converted to term loans amortized cost basis 116   111
Total loans 3,934   3,910
Pass | Construction and other consumer real estate | Consumer:      
Total loans      
2026 21   246
2025 340   351
2024 318   87
2023 56   91
2022 48   5
Prior 3   2
Revolving loans amortized cost basis 0   0
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 786   782
Pass | Bankcard and other revolving plans | Consumer:      
Total loans      
2026 0   0
2025 0   0
2024 0   0
2023 0   0
2022 0   0
Prior 0   0
Revolving loans amortized cost basis 511   511
Revolving loans converted to term loans amortized cost basis 1   1
Total loans 512   512
Pass | Other | Consumer:      
Total loans      
2026 18   55
2025 44   26
2024 23   19
2023 14   11
2022 9   4
Prior 4   1
Revolving loans amortized cost basis 0   0
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 112   116
Special Mention | Commercial and industrial | Commercial:      
Total loans      
2026 0   14
2025 13   29
2024 38   13
2023 49   16
2022 2   28
Prior 58   30
Revolving loans amortized cost basis 46   99
Revolving loans converted to term loans amortized cost basis 1   1
Total loans 207   230
Special Mention | Owner-occupied | Commercial:      
Total loans      
2026 0   3
2025 7   28
2024 16   0
2023 1   9
2022 20   9
Prior 20   30
Revolving loans amortized cost basis 1   1
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 65   80
Special Mention | Municipal | Commercial:      
Total loans      
2026 0   0
2025 0   3
2024 0   0
2023 0   0
2022 0   0
Prior 0   0
Revolving loans amortized cost basis 0   0
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 0   3
Special Mention | Term | Commercial real estate:      
Total loans      
2026 0   51
2025 9   0
2024 21   35
2023 87   71
2022 80   0
Prior 15   1
Revolving loans amortized cost basis 0   0
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 212   158
Special Mention | Construction and land development | Commercial real estate:      
Total loans      
2026 0   0
2025 0   8
2024 9   5
2023 0   0
2022 0   0
Prior 0   0
Revolving loans amortized cost basis 0   0
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 9   13
Special Mention | 1-4 family residential | Consumer:      
Total loans      
2026 0   0
2025 0   0
2024 0   0
2023 0   0
2022 0   0
Prior 0   0
Revolving loans amortized cost basis 0   0
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 0   0
Special Mention | Home equity credit line | Consumer:      
Total loans      
2026 0   0
2025 0   0
2024 0   0
2023 0   0
2022 0   0
Prior 0   0
Revolving loans amortized cost basis 0   0
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 0   0
Special Mention | Construction and other consumer real estate | Consumer:      
Total loans      
2026 0   0
2025 0   0
2024 0   0
2023 0   0
2022 0   0
Prior 0   0
Revolving loans amortized cost basis 0   0
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 0   0
Special Mention | Bankcard and other revolving plans | Consumer:      
Total loans      
2026 0   0
2025 0   0
2024 0   0
2023 0   0
2022 0   0
Prior 0   0
Revolving loans amortized cost basis 0   0
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 0   0
Special Mention | Other | Consumer:      
Total loans      
2026 0   0
2025 0   0
2024 0   0
2023 0   0
2022 0   0
Prior 0   0
Revolving loans amortized cost basis 0   0
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 0   0
Accruing Substandard | Commercial and industrial | Commercial:      
Total loans      
2026 52   60
2025 120   140
2024 111   82
2023 85   41
2022 48   18
Prior 41   30
Revolving loans amortized cost basis 180   177
Revolving loans converted to term loans amortized cost basis 9   9
Total loans 646   557
Accruing Substandard | Owner-occupied | Commercial:      
Total loans      
2026 5   4
2025 5   37
2024 49   15
2023 12   111
2022 104   71
Prior 135   89
Revolving loans amortized cost basis 23   24
Revolving loans converted to term loans amortized cost basis 4   4
Total loans 337   355
Accruing Substandard | Municipal | Commercial:      
Total loans      
2026 0   0
2025 3   0
2024 0   0
2023 0   0
2022 0   0
Prior 0   18
Revolving loans amortized cost basis 0   0
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 3   18
Accruing Substandard | Term | Commercial real estate:      
Total loans      
2026 132   328
2025 249   43
2024 35   142
2023 137   426
2022 338   53
Prior 92   36
Revolving loans amortized cost basis 1   26
Revolving loans converted to term loans amortized cost basis 15   15
Total loans 999   1,069
Accruing Substandard | Construction and land development | Commercial real estate:      
Total loans      
2026 0   53
2025 32   6
2024 24   0
2023 6   0
2022 0   0
Prior 0   0
Revolving loans amortized cost basis 4   6
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 66   65
Accruing Substandard | 1-4 family residential | Consumer:      
Total loans      
2026 0   0
2025 0   1
2024 0   0
2023 0   0
2022 2   0
Prior 1   1
Revolving loans amortized cost basis 0   0
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 3   2
Accruing Substandard | Home equity credit line | Consumer:      
Total loans      
2026 0   0
2025 0   0
2024 0   0
2023 0   0
2022 0   0
Prior 0   0
Revolving loans amortized cost basis 9   10
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 9   10
Accruing Substandard | Construction and other consumer real estate | Consumer:      
Total loans      
2026 0   0
2025 0   0
2024 0   0
2023 0   0
2022 0   0
Prior 0   0
Revolving loans amortized cost basis 0   0
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 0   0
Accruing Substandard | Bankcard and other revolving plans | Consumer:      
Total loans      
2026 0   0
2025 0   0
2024 0   0
2023 0   0
2022 0   0
Prior 0   0
Revolving loans amortized cost basis 2   2
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 2   2
Accruing Substandard | Other | Consumer:      
Total loans      
2026 0   0
2025 0   0
2024 0   0
2023 0   0
2022 0   0
Prior 0   0
Revolving loans amortized cost basis 0   0
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 0   0
Nonaccrual | Commercial and industrial | Commercial:      
Total loans      
2026 14   4
2025 2   5
2024 4   4
2023 3   37
2022 21   3
Prior 5   3
Revolving loans amortized cost basis 14   14
Revolving loans converted to term loans amortized cost basis 20   23
Total loans 83   93
Nonaccrual | Owner-occupied | Commercial:      
Total loans      
2026 0   6
2025 6   8
2024 2   2
2023 2   6
2022 6   3
Prior 28   19
Revolving loans amortized cost basis 6   7
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 50   51
Nonaccrual | Municipal | Commercial:      
Total loans      
2026 0   0
2025 0   0
2024 0   0
2023 0   0
2022 0   2
Prior 2   0
Revolving loans amortized cost basis 0   0
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 2   2
Nonaccrual | Term | Commercial real estate:      
Total loans      
2026 0   21
2025 20   0
2024 0   16
2023 16   1
2022 1   0
Prior 5   5
Revolving loans amortized cost basis 0   0
Revolving loans converted to term loans amortized cost basis 0   29
Total loans 42   72
Nonaccrual | Construction and land development | Commercial real estate:      
Total loans      
2026 0   0
2025 0   0
2024 0   1
2023 0   0
2022 0   0
Prior 0   0
Revolving loans amortized cost basis 0   0
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 0   1
Nonaccrual | 1-4 family residential | Consumer:      
Total loans      
2026 0   1
2025 1   4
2024 3   5
2023 6   15
2022 14   13
Prior 43   27
Revolving loans amortized cost basis 0   0
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 67   65
Nonaccrual | Home equity credit line | Consumer:      
Total loans      
2026 0   0
2025 0   0
2024 0   0
2023 0   0
2022 0   0
Prior 0   0
Revolving loans amortized cost basis 28   26
Revolving loans converted to term loans amortized cost basis 5   4
Total loans 33   30
Nonaccrual | Construction and other consumer real estate | Consumer:      
Total loans      
2026 0   0
2025 0   0
2024 0   0
2023 0   0
2022 0   0
Prior 0   0
Revolving loans amortized cost basis 0   0
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 0   0
Nonaccrual | Bankcard and other revolving plans | Consumer:      
Total loans      
2026 0   0
2025 0   0
2024 0   0
2023 0   0
2022 0   0
Prior 0   0
Revolving loans amortized cost basis 1   1
Revolving loans converted to term loans amortized cost basis 0   0
Total loans 1   1
Nonaccrual | Other | Consumer:      
Total loans      
2026 0   0
2025 0   0
2024 0   0
2023 1   0
2022 0   0
Prior 0   0
Revolving loans amortized cost basis 0   0
Revolving loans converted to term loans amortized cost basis 0   0
Total loans $ 1   $ 0