v3.26.1
LOANS, LEASES, AND ALLOWANCE FOR CREDIT LOSSES (Summary of Outstanding Loan Balances (Accruing and Nonaccruing) Categorized by Credit Quality Indicators - Prior Year) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Total loans      
2025 $ 2,664   $ 10,252
2024 9,780   7,205
2023 6,771   5,114
2022 4,783   8,824
2020 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      
2025 0 $ 0  
2024 4 0  
2023 0 1  
2022 0 0  
2020 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      
2025 1,448   5,491
2024 5,244   4,156
2023 3,840   2,395
2022 2,281   3,277
2020 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      
2025 831   3,542
2024 3,343   1,820
2023 1,871   1,741
2022 1,619   2,286
2020 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      
2025 385   1,219
2024 1,193   1,229
2023 1,060   978
2022 883   3,261
2020 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      
2025 0 0  
2024 0 0  
2023 0 0  
2022 0 0  
2020 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      
2025 937   3,824
2024 3,622   2,232
2023 2,026   1,242
2022 1,167   992
2020 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      
2025 0 0  
2024 4 0  
2023 0 1  
2022 0 0  
2020 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      
2025 396   1,125
2024 1,131   1,307
2023 1,182   744
2022 712   1,540
2020 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      
2025 115   542
2024 491   617
2023 632   409
2022 402   745
2020 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      
2025 747   3,043
2024 2,734   1,266
2023 1,367   1,360
2022 1,372   2,239
2020 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      
2025 84   499
2024 609   554
2023 504   381
2022 247   47
2020 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      
2025 346   918
2024 809   852
2023 719   872
2022 812   3,159
2020 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      
2025   0  
2024   0  
2023   0  
2022   0  
2020   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      
2025 0   0
2024 0   0
2023 0   0
2022 0   0
2020 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      
2025 21   246
2024 340   351
2023 318   87
2022 56   91
2020 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      
2025 0   0
2024 0   0
2023 0   0
2022 0   0
2020 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      
2025 0 0  
2024 0 0  
2023 0 0  
2022 0 0  
2020 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      
2025 18   55
2024 44   26
2023 23   19
2022 15   11
2020 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      
2025 0 0  
2024 0 0  
2023 0 0  
2022 0 0  
2020 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      
2025 871   3,746
2024 3,487   2,058
2023 1,873   1,143
2022 1,030   898
2020 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      
2025 391   1,112
2024 1,113   1,234
2023 1,115   727
2022 697   1,414
2020 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      
2025 115   542
2024 488   614
2023 632   409
2022 402   745
2020 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      
2025 615   2,643
2024 2,456   1,223
2023 1,311   1,167
2022 1,132   1,741
2020 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      
2025 84   446
2024 577   540
2023 471   375
2022 241   47
2020 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      
2025 346   917
2024 808   847
2023 716   867
2022 806   3,144
2020 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      
2025 0   0
2024 0   0
2023 0   0
2022 0   0
2020 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      
2025 21   246
2024 340   351
2023 318   87
2022 56   91
2020 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      
2025 0   0
2024 0   0
2023 0   0
2022 0   0
2020 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      
2025 18   55
2024 44   26
2023 23   19
2022 14   11
2020 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      
2025 0   14
2024 13   29
2023 38   13
2022 49   16
2020 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      
2025 0   3
2024 7   28
2023 16   0
2022 1   9
2020 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      
2025 0   0
2024 0   3
2023 0   0
2022 0   0
2020 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      
2025 0   51
2024 9   0
2023 21   35
2022 87   71
2020 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      
2025 0   0
2024 0   8
2023 9   5
2022 0   0
2020 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      
2025 0   0
2024 0   0
2023 0   0
2022 0   0
2020 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      
2025 0   0
2024 0   0
2023 0   0
2022 0   0
2020 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      
2025 0   0
2024 0   0
2023 0   0
2022 0   0
2020 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      
2025 0   0
2024 0   0
2023 0   0
2022 0   0
2020 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      
2025 0   0
2024 0   0
2023 0   0
2022 0   0
2020 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      
2025 52   60
2024 120   140
2023 111   82
2022 85   41
2020 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      
2025 5   4
2024 5   37
2023 49   15
2022 12   111
2020 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      
2025 0   0
2024 3   0
2023 0   0
2022 0   0
2020 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      
2025 132   328
2024 249   43
2023 35   142
2022 137   426
2020 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      
2025 0   53
2024 32   6
2023 24   0
2022 6   0
2020 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      
2025 0   0
2024 0   1
2023 0   0
2022 0   0
2020 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      
2025 0   0
2024 0   0
2023 0   0
2022 0   0
2020 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      
2025 0   0
2024 0   0
2023 0   0
2022 0   0
2020 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      
2025 0   0
2024 0   0
2023 0   0
2022 0   0
2020 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      
2025 0   0
2024 0   0
2023 0   0
2022 0   0
2020 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      
2025 14   4
2024 2   5
2023 4   4
2022 3   37
2020 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      
2025 0   6
2024 6   8
2023 2   2
2022 2   6
2020 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      
2025 0   0
2024 0   0
2023 0   0
2022 0   0
2020 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      
2025 0   21
2024 20   0
2023 0   16
2022 16   1
2020 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      
2025 0   0
2024 0   0
2023 0   1
2022 0   0
2020 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      
2025 0   1
2024 1   4
2023 3   5
2022 6   15
2020 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      
2025 0   0
2024 0   0
2023 0   0
2022 0   0
2020 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      
2025 0   0
2024 0   0
2023 0   0
2022 0   0
2020 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      
2025 0   0
2024 0   0
2023 0   0
2022 0   0
2020 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      
2025 0   0
2024 0   0
2023 0   0
2022 1   0
2020 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