v3.26.1
Fair Value (Recurring Fair Value Measurements) (Details) - USD ($)
$ in Millions
6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Assets    
Investment securities – available-for-sale $ 71,100 $ 68,135
Mortgage servicing rights 3,801 3,659
Financial derivatives 832 1,020
Liabilities    
Interest-bearing deposit, fair value 800 3,600
Financial derivatives 2,240 1,725
Other liabilities $ 100 $ 100
Assets At Fair Value | Assets, Total | Assets    
Liabilities    
Concentration risk, percentage 15.00% 15.00%
Level 3 Assets | Assets, Total | Assets    
Liabilities    
Concentration risk, percentage 8.00% 9.00%
Level 3 Assets | Assets | Assets    
Liabilities    
Concentration risk, percentage 1.00% 1.00%
Liabilities At Fair Value | Liabilities, Total | Liability    
Liabilities    
Concentration risk, percentage 1.00% 2.00%
Level Three Liabilities | Liabilities, Total | Liability    
Liabilities    
Concentration risk, percentage 4.00% 3.00%
Level Three Liabilities | Liability | Liability    
Liabilities    
Concentration risk, percentage 1.00% 1.00%
Fair Value, Recurring    
Assets    
Investment securities – available-for-sale $ 71,100 $ 68,135
Loans 1,093 1,112
Equity investments 4,001 3,642
Trading securities 6,964 6,766
Financial derivatives 2,652 2,672
Other assets 707 682
Total Assets 91,623 88,387
Liabilities    
Interest-bearing deposit, fair value 783 3,642
Other borrowed funds 1,241 948
Financial derivatives 4,052 3,626
Other liabilities 152 160
Total liabilities 6,228 8,376
Level 1 | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 27,142 27,871
Loans 0 0
Equity investments 1,264 820
Trading securities 2,464 2,662
Financial derivatives 3 6
Other assets 547 506
Total Assets 31,420 31,865
Liabilities    
Interest-bearing deposit, fair value 0 0
Other borrowed funds 905 752
Financial derivatives 7 1
Other liabilities 0 0
Total liabilities 912 753
Level 2 | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 43,225 39,495
Loans 508 492
Equity investments 0 0
Trading securities 4,500 4,104
Financial derivatives 2,642 2,660
Other assets 142 162
Total Assets 52,252 48,524
Liabilities    
Interest-bearing deposit, fair value 783 3,642
Other borrowed funds 332 189
Financial derivatives 3,948 3,546
Other liabilities 30 23
Total liabilities 5,093 7,400
Level 3    
Assets    
Equity investments 2,355 2,503
Level 3 | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 733 769
Loans 585 620
Equity investments 2,355 2,503
Trading securities 0 0
Financial derivatives 7 6
Other assets 18 14
Total Assets 7,569 7,679
Liabilities    
Interest-bearing deposit, fair value 0 0
Other borrowed funds 4 7
Financial derivatives 97 79
Other liabilities 122 137
Total liabilities 223 223
Residential mortgage loans held for sale | Fair Value, Recurring    
Assets    
Mortgage loans held for sale 747 660
Residential mortgage loans held for sale | Level 1 | Fair Value, Recurring    
Assets    
Mortgage loans held for sale 0 0
Residential mortgage loans held for sale | Level 2 | Fair Value, Recurring    
Assets    
Mortgage loans held for sale 677 552
Residential mortgage loans held for sale | Level 3 | Fair Value, Recurring    
Assets    
Mortgage loans held for sale 70 108
Commercial mortgage loans held for sale | Fair Value, Recurring    
Assets    
Mortgage loans held for sale 558 1,059
Commercial mortgage loans held for sale | Level 1 | Fair Value, Recurring    
Assets    
Mortgage loans held for sale 0 0
Commercial mortgage loans held for sale | Level 2 | Fair Value, Recurring    
Assets    
Mortgage loans held for sale 558 1,059
Commercial mortgage loans held for sale | Level 3 | Fair Value, Recurring    
Assets    
Mortgage loans held for sale 0 0
U.S. Treasury and government agencies | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 28,525 28,897
U.S. Treasury and government agencies | Level 1 | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 27,142 27,871
U.S. Treasury and government agencies | Level 2 | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 1,383 1,026
U.S. Treasury and government agencies | Level 3 | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 0 0
Residential mortgage-backed | Mortgage-backed Securities Agency | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 33,888 30,663
Residential mortgage-backed | Mortgage-backed Securities Non-agency | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 517 548
Residential mortgage-backed | Level 1 | Mortgage-backed Securities Agency | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 0 0
Residential mortgage-backed | Level 1 | Mortgage-backed Securities Non-agency | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 0 0
Residential mortgage-backed | Level 2 | Mortgage-backed Securities Agency | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 33,888 30,663
Residential mortgage-backed | Level 2 | Mortgage-backed Securities Non-agency | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 0 0
Residential mortgage-backed | Level 3 | Mortgage-backed Securities Agency | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 0 0
Residential mortgage-backed | Level 3 | Mortgage-backed Securities Non-agency | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 517 548
Commercial mortgage servicing rights | Mortgage-backed Securities Agency | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 3,361 3,372
Commercial mortgage servicing rights | Mortgage-backed Securities Non-agency | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 158 252
Commercial mortgage servicing rights | Level 1 | Mortgage-backed Securities Agency | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 0 0
Commercial mortgage servicing rights | Level 1 | Mortgage-backed Securities Non-agency | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 0 0
Commercial mortgage servicing rights | Level 2 | Mortgage-backed Securities Agency | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 3,361 3,372
Commercial mortgage servicing rights | Level 2 | Mortgage-backed Securities Non-agency | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 79 173
Commercial mortgage servicing rights | Level 3 | Mortgage-backed Securities Agency | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 0 0
Commercial mortgage servicing rights | Level 3 | Mortgage-backed Securities Non-agency | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 79 79
Asset-backed | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 2,549 2,297
Asset-backed | Level 1 | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 0 0
Asset-backed | Level 2 | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 2,467 2,210
Asset-backed | Level 3 | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 82 87
Other | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 2,102 2,106
Other | Level 1 | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 0 0
Other | Level 2 | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 2,047 2,051
Other | Level 3 | Fair Value, Recurring    
Assets    
Investment securities – available-for-sale 55 55
Residential mortgage servicing rights | Fair Value, Recurring    
Assets    
Mortgage servicing rights 2,762 2,638
Residential mortgage servicing rights | Level 1 | Fair Value, Recurring    
Assets    
Mortgage servicing rights 0 0
Residential mortgage servicing rights | Level 2 | Fair Value, Recurring    
Assets    
Mortgage servicing rights 0 0
Residential mortgage servicing rights | Level 3 | Fair Value, Recurring    
Assets    
Mortgage servicing rights 2,762 2,638
Commercial mortgage servicing rights | Fair Value, Recurring    
Assets    
Mortgage servicing rights 1,039 1,021
Commercial mortgage servicing rights | Level 1 | Fair Value, Recurring    
Assets    
Mortgage servicing rights 0 0
Commercial mortgage servicing rights | Level 2 | Fair Value, Recurring    
Assets    
Mortgage servicing rights 0 0
Commercial mortgage servicing rights | Level 3 | Fair Value, Recurring    
Assets    
Mortgage servicing rights $ 1,039 $ 1,021