v3.26.1
Fair Value (Additional Fair Value Information Related To Financial Instruments) (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Financial Instruments, Financial Assets, Balance Sheet Groupings    
Securities held to maturity $ 69,468 $ 67,979
Carrying Amount    
Financial Instruments, Financial Assets, Balance Sheet Groupings    
Securities held to maturity 72,045 70,109
Net loans (excludes leases) 348,137 318,869
Other assets 5,677 5,109
Total assets 457,558 433,800
Financial Instruments, Financial Liabilities, Balance Sheet Groupings    
Time deposits 33,216 30,361
Borrowed funds 65,301 56,097
Unfunded lending related commitments 832 818
Other liabilities 1,234 1,091
Total liabilities 100,583 88,367
Carrying Amount | Cash and due from banks    
Financial Instruments, Financial Assets, Balance Sheet Groupings    
Cash and cash equivalents 5,646 6,777
Carrying Amount | Interest-earning deposits with banks    
Financial Instruments, Financial Assets, Balance Sheet Groupings    
Cash and cash equivalents 26,053 32,936
Fair Value    
Financial Instruments, Financial Assets, Balance Sheet Groupings    
Securities held to maturity 69,468 67,979
Net loans (excludes leases) 346,057 316,005
Other assets 5,677 5,109
Total assets 452,901 428,806
Financial Instruments, Financial Liabilities, Balance Sheet Groupings    
Time deposits 33,396 30,576
Borrowed funds 66,082 57,289
Unfunded lending related commitments 832 818
Other liabilities 1,234 1,091
Total liabilities 101,544 89,774
Fair Value | Cash and due from banks    
Financial Instruments, Financial Assets, Balance Sheet Groupings    
Cash and cash equivalents 5,646 6,777
Fair Value | Interest-earning deposits with banks    
Financial Instruments, Financial Assets, Balance Sheet Groupings    
Cash and cash equivalents 26,053 32,936
Level 1    
Financial Instruments, Financial Assets, Balance Sheet Groupings    
Net loans (excludes leases) 0 0
Other assets 0 0
Financial Instruments, Financial Liabilities, Balance Sheet Groupings    
Time deposits 0 0
Borrowed funds 0 0
Unfunded lending related commitments 0 0
Other liabilities 0 0
Total liabilities 0 0
Level 1 | Fair Value    
Financial Instruments, Financial Assets, Balance Sheet Groupings    
Securities held to maturity 16,869 19,564
Total assets 47,803 58,316
Level 1 | Fair Value | Cash and due from banks    
Financial Instruments, Financial Assets, Balance Sheet Groupings    
Cash and cash equivalents 5,646 6,777
Level 1 | Fair Value | Interest-earning deposits with banks    
Financial Instruments, Financial Assets, Balance Sheet Groupings    
Cash and cash equivalents 25,288 31,975
Level 2    
Financial Instruments, Financial Assets, Balance Sheet Groupings    
Net loans (excludes leases) 0 0
Financial Instruments, Financial Liabilities, Balance Sheet Groupings    
Unfunded lending related commitments 0 0
Level 2 | Fair Value    
Financial Instruments, Financial Assets, Balance Sheet Groupings    
Securities held to maturity 52,440 48,247
Other assets 5,677 5,109
Total assets 58,882 54,317
Financial Instruments, Financial Liabilities, Balance Sheet Groupings    
Time deposits 33,396 30,576
Borrowed funds 65,647 56,793
Other liabilities 1,234 1,091
Total liabilities 100,277 88,460
Level 2 | Fair Value | Cash and due from banks    
Financial Instruments, Financial Assets, Balance Sheet Groupings    
Cash and cash equivalents 0 0
Level 2 | Fair Value | Interest-earning deposits with banks    
Financial Instruments, Financial Assets, Balance Sheet Groupings    
Cash and cash equivalents 765 961
Level 3 | Fair Value    
Financial Instruments, Financial Assets, Balance Sheet Groupings    
Securities held to maturity 159 168
Net loans (excludes leases) 346,057 316,005
Other assets 0 0
Total assets 346,216 316,173
Financial Instruments, Financial Liabilities, Balance Sheet Groupings    
Time deposits 0 0
Borrowed funds 435 496
Unfunded lending related commitments 832 818
Other liabilities 0 0
Total liabilities 1,267 1,314
Level 3 | Fair Value | Cash and due from banks    
Financial Instruments, Financial Assets, Balance Sheet Groupings    
Cash and cash equivalents 0 0
Level 3 | Fair Value | Interest-earning deposits with banks    
Financial Instruments, Financial Assets, Balance Sheet Groupings    
Cash and cash equivalents $ 0 $ 0