v3.26.1
FAIR VALUE MEASUREMENT - Estimate Fair Value of Financial Instruments Not Carried at Fair Value (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Mar. 31, 2025
Dec. 31, 2024
Assets        
Loans $ 8,523 $ 6,855    
Liabilities        
Deposits 1,446,240 1,403,573    
Investments 444,164 444,229    
Allowance for credit losses 19,636 19,247 $ 18,726 $ 18,574
Loans, net of unearned income 761,616 752,230    
Corporate loans        
Assets        
Loans 8,498 6,804    
Liabilities        
Allowance for credit losses 3,339 3,053 $ 2,725 $ 2,556
Loans, net of unearned income 359,225 343,697    
Lease financing        
Liabilities        
Loans, net of unearned income 100 100    
Carrying value        
Assets        
HTM debt securities, net of allowance(1) 183,800 194,900    
Securities borrowed and purchased under agreements to resell 163,100 150,100    
Loans 733,300 726,000    
Other financial assets 514,700 448,000    
Liabilities        
Deposits 1,441,900 1,399,400    
Securities loaned and sold under agreements to repurchase 137,500 148,700    
Long-term debt 172,400 185,000    
Other financial liabilities 195,100 141,800    
Allowance for credit losses 19,600 19,200    
Estimated fair value        
Assets        
HTM debt securities, net of allowance(1) 173,300 184,700    
Securities borrowed and purchased under agreements to resell 163,100 150,100    
Loans 752,800 742,100    
Other financial assets 514,700 448,000    
Liabilities        
Deposits 1,441,800 1,399,300    
Securities loaned and sold under agreements to repurchase 137,500 148,700    
Long-term debt 175,700 189,900    
Other financial liabilities 195,100 141,800    
Estimated fair value | Corporate loans        
Liabilities        
Loans, net of unearned income 8,498 6,804    
Estimated fair value | Level 1        
Assets        
HTM debt securities, net of allowance(1) 79,300 87,300    
Securities borrowed and purchased under agreements to resell 0 0    
Loans 0 0    
Other financial assets 385,800 349,600    
Liabilities        
Deposits 0 0    
Securities loaned and sold under agreements to repurchase 0 0    
Long-term debt 0 0    
Other financial liabilities 0 0    
Estimated fair value | Level 2        
Assets        
HTM debt securities, net of allowance(1) 91,700 95,200    
Securities borrowed and purchased under agreements to resell 163,100 150,100    
Loans 0 0    
Other financial assets 128,900 98,400    
Liabilities        
Deposits 1,441,800 1,399,300    
Securities loaned and sold under agreements to repurchase 137,500 148,700    
Long-term debt 169,600 183,800    
Other financial liabilities 195,100 141,800    
Estimated fair value | Level 3        
Assets        
HTM debt securities, net of allowance(1) 2,300 2,200    
Securities borrowed and purchased under agreements to resell 0 0    
Loans 752,800 742,100    
Other financial assets 0 0    
Liabilities        
Deposits 0 0    
Securities loaned and sold under agreements to repurchase 0 0    
Long-term debt 6,100 6,100    
Other financial liabilities 0 0    
Estimated fair value | Level 3 | Corporate loans        
Fair value measurements additional disclosures        
Unfunded lending commitments 7,200 10,800    
Carried at cost | Non-marketable equity securities        
Liabilities        
Investments $ 5,300 $ 5,100