Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUES OF ASSETS AND LIABILITIES - Non-Recurring Basis (Details)

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FAIR VALUES OF ASSETS AND LIABILITIES - Non-Recurring Basis (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Loans held for sale $ 777   $ 777   $ 1,270
Nonrecurring Basis | Total Gains/(Losses)          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Collateral-dependent loans, gains (losses) 0 $ (1) (1) $ (2)  
Loans held for sale, gains (losses) 0 $ 2 0 $ 2  
Nonrecurring Basis | Level 3 | Fair Value          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Collateral-dependent loans 32   32   39
Loans held for sale $ 0   $ 0   $ 0