Quarterly report pursuant to Section 13 or 15(d)

Fair Value Disclosures - Gains and Losses (Details)

v2.4.0.6
Fair Value Disclosures - Gains and Losses (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]    
Principal Transactions, assets   $ 0
Other Revenue, assets   (47)
Total, assets   (47)
Total trading liabilities, excluding derivative contracts
    
Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]    
Principal Transactions, liabilities   (1)
Other Revenue, liabilities   0
Total, liabilities   (1)
Preferred stock
    
Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]    
Principal Transactions, liabilities   (2)
Other Revenue, liabilities   0
Total, liabilities   (2)
Municipals, money markets and other
    
Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]    
Principal Transactions, liabilities   1
Other Revenue, liabilities   0
Total, liabilities   1
Other payables - interest and other
    
Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]    
Principal Transactions, liabilities   0
Other Revenue, liabilities   3
Total, liabilities   3
Long-term borrowings
    
Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]    
Principal Transactions, liabilities 21 (129)
Other Revenue, liabilities (4) (44)
Total, liabilities 17 (173)
Trading account assets, excluding derivative contracts
    
Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]    
Principal Transactions, assets 219 128
Other Revenue, assets 0 0
Total, assets 219 128
Equities
    
Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]    
Principal Transactions, assets 21 6
Other Revenue, assets 0 0
Total, assets 21 6
Convertible debentures
    
Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]    
Principal Transactions, assets   2
Other Revenue, assets   0
Total, assets   2
Non-U.S. governments and agencies
    
Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]    
Principal Transactions, assets 51 13
Other Revenue, assets 0 0
Total, assets 51 13
Corporate debt
    
Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]    
Principal Transactions, assets 38 62
Other Revenue, assets 0 0
Total, assets 38 62
Preferred stock
    
Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]    
Principal Transactions, assets 12 3
Other Revenue, assets 0 0
Total, assets 12 3
Mortgages, mortgage-backed, and asset-backed securities
    
Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]    
Principal Transactions, assets 89 50
Other Revenue, assets 0 0
Total, assets 89 50
Municipals and money markets
    
Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]    
Principal Transactions, assets 8 (8)
Other Revenue, assets 0 0
Total, assets 8 (8)
Derivative contracts, net
    
Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]    
Principal Transactions, assets (245) (613)
Other Revenue, assets 0 0
Total, assets (245) (613)
Total investment securities
    
Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]    
Principal Transactions, assets   0
Other Revenue, assets   (10)
Total, assets   (10)
Investment securities non-qualifying
    
Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]    
Principal Transactions, assets 0 0
Other Revenue, assets (3) (10)
Total, assets (3) (10)
Loans, notes and mortgages
    
Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]    
Principal Transactions, assets 0 0
Other Revenue, assets (53) 96
Total, assets (53) 96
Other assets
    
Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]    
Principal Transactions, assets 0  
Other Revenue, assets (448)  
Total, assets $ (448)