v3.25.2
Loans and Allowances for Credit Losses, By Aging Category (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Financing Receivable, Past Due [Line Items]    
Past Due 90 Days or More and Accruing $ 62,852 $ 52,504
Current and Past Due Performing Loans 24,292,211 24,114,724
30 to 59 Days [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 46,413 59,350
60 to 89 Days [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 34,167 21,775
90 Days or More [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 96,589 80,180
Financial Asset, Not Past Due    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 24,115,042 23,953,419
Commercial [Member]    
Financing Receivable, Past Due [Line Items]    
Past Due 90 Days or More and Accruing 27 0
Current and Past Due Performing Loans 14,384,182 15,030,136
Commercial [Member] | 30 to 59 Days [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 7,811 28,845
Commercial [Member] | 60 to 89 Days [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 18,511 837
Commercial [Member] | 90 Days or More [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 9,128 9,642
Commercial [Member] | Financial Asset, Not Past Due    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 14,348,732 14,990,812
Commercial [Member] | Healthcare [Member]    
Financing Receivable, Past Due [Line Items]    
Past Due 90 Days or More and Accruing 0 0
Current and Past Due Performing Loans 3,808,936 3,967,533
Commercial [Member] | Healthcare [Member] | 30 to 59 Days [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 3,293 25,778
Commercial [Member] | Healthcare [Member] | 60 to 89 Days [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 16,258 0
Commercial [Member] | Healthcare [Member] | 90 Days or More [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 9,101 9,613
Commercial [Member] | Healthcare [Member] | Financial Asset, Not Past Due    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 3,780,284 3,932,142
Commercial [Member] | Services [Member]    
Financing Receivable, Past Due [Line Items]    
Past Due 90 Days or More and Accruing 18 0
Current and Past Due Performing Loans 3,658,807 3,643,203
Commercial [Member] | Services [Member] | 30 to 59 Days [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 4,046 0
Commercial [Member] | Services [Member] | 60 to 89 Days [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 1,021 767
Commercial [Member] | Services [Member] | 90 Days or More [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 18 0
Commercial [Member] | Services [Member] | Financial Asset, Not Past Due    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 3,653,722 3,642,436
Commercial [Member] | Energy [Member]    
Financing Receivable, Past Due [Line Items]    
Past Due 90 Days or More and Accruing 0 0
Current and Past Due Performing Loans 2,734,713 3,254,724
Commercial [Member] | Energy [Member] | 30 to 59 Days [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 0 0
Commercial [Member] | Energy [Member] | 60 to 89 Days [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 0 0
Commercial [Member] | Energy [Member] | 90 Days or More [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 0 0
Commercial [Member] | Energy [Member] | Financial Asset, Not Past Due    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 2,734,713 3,254,724
Commercial [Member] | General business [Member]    
Financing Receivable, Past Due [Line Items]    
Past Due 90 Days or More and Accruing 9 0
Current and Past Due Performing Loans 4,181,726 4,164,676
Commercial [Member] | General business [Member] | 30 to 59 Days [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 472 3,067
Commercial [Member] | General business [Member] | 60 to 89 Days [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 1,232 70
Commercial [Member] | General business [Member] | 90 Days or More [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 9 29
Commercial [Member] | General business [Member] | Financial Asset, Not Past Due    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 4,180,013 4,161,510
Commercial real estate [Member]    
Financing Receivable, Past Due [Line Items]    
Past Due 90 Days or More and Accruing 1,050 0
Current and Past Due Performing Loans 5,521,441 5,058,452
Commercial real estate [Member] | 30 to 59 Days [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 6,251 0
Commercial real estate [Member] | 60 to 89 Days [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 0 0
Commercial real estate [Member] | 90 Days or More [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 7,976 9,785
Commercial real estate [Member] | Financial Asset, Not Past Due    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 5,507,214 5,048,667
Loans to individuals [Member]    
Financing Receivable, Past Due [Line Items]    
Past Due 90 Days or More and Accruing 61,775 52,504
Current and Past Due Performing Loans 4,386,588 4,026,136
Loans to individuals [Member] | 30 to 59 Days [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 32,351 30,505
Loans to individuals [Member] | 60 to 89 Days [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 15,656 20,938
Loans to individuals [Member] | 90 Days or More [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 79,485 60,753
Loans to individuals [Member] | Financial Asset, Not Past Due    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 4,259,096 3,913,940
Loans to individuals [Member] | Residential mortgage [Member]    
Financing Receivable, Past Due [Line Items]    
Past Due 90 Days or More and Accruing 311 0
Current and Past Due Performing Loans 2,610,681 2,436,958
Loans to individuals [Member] | Residential mortgage [Member] | 30 to 59 Days [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 12,596 10,930
Loans to individuals [Member] | Residential mortgage [Member] | 60 to 89 Days [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 2,906 5,622
Loans to individuals [Member] | Residential mortgage [Member] | 90 Days or More [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 8,454 3,773
Loans to individuals [Member] | Residential mortgage [Member] | Financial Asset, Not Past Due    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 2,586,725 2,416,633
Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans [Member]    
Financing Receivable, Past Due [Line Items]    
Past Due 90 Days or More and Accruing 61,464 52,504
Current and Past Due Performing Loans 148,453 136,649
Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans [Member] | 30 to 59 Days [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 17,866 18,514
Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans [Member] | 60 to 89 Days [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 12,716 15,268
Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans [Member] | 90 Days or More [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 66,437 56,957
Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans [Member] | Financial Asset, Not Past Due    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 51,434 45,910
Loans to individuals [Member] | Personal [Member]    
Financing Receivable, Past Due [Line Items]    
Past Due 90 Days or More and Accruing 0 0
Current and Past Due Performing Loans 1,627,454 1,452,529
Loans to individuals [Member] | Personal [Member] | 30 to 59 Days [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 1,889 1,061
Loans to individuals [Member] | Personal [Member] | 60 to 89 Days [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 34 48
Loans to individuals [Member] | Personal [Member] | 90 Days or More [Member]    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans 4,594 23
Loans to individuals [Member] | Personal [Member] | Financial Asset, Not Past Due    
Financing Receivable, Past Due [Line Items]    
Current and Past Due Performing Loans $ 1,620,937 $ 1,451,397