Annual report pursuant to Section 13 and 15(d)

OTHER REGULATORY MATTERS (Details)

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OTHER REGULATORY MATTERS (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Common Equity Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets 4.50%  
Common Equity Tier One Risk Based Capital Conservation Buffer Plus Capital Required for Capital Adequacy to Risk Weighted Assets 7.00%  
Common Equity Tier One Capital $ 8,647 $ 8,271
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets 6.00%  
Tier One Risk Based Capital Conservation Buffer Plus Capital Required for Capital Adequacy to Risk Weighted Assets 8.50%  
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets 6.00%  
Tier One Leverage Capital $ 9,854 9,478
Tier One Risk Based Capital $ 9,854 9,478
Capital Required for Capital Adequacy to Risk Weighted Assets 8.00%  
Capital Conservation Buffer Plus Capital required for Capital Adequacy to Risk Weighted Assets 10.50%  
Capital Required to be Well Capitalized to Risk Weighted Assets 10.00%  
Capital $ 11,413 11,122
Tier One Leverage Capital Required for Capital Adequacy to Average Assets 4.00%  
Bank    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Common Equity Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets 4.50%  
Common Equity Tier One Risk Based Capital Conservation Buffer Plus Capital Required for Capital Adequacy to Risk Weighted Assets 7.00%  
Common Equity Tier One Risked Based Capital Required to be Well Capitalized to Risk Weighted Assets 6.50%  
Common Equity Tier One Capital $ 9,747 $ 8,732
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets 6.00%  
Tier One Risk Based Capital Conservation Buffer Plus Capital Required for Capital Adequacy to Risk Weighted Assets 8.50%  
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets 8.00%  
Tier One Risk Based Capital to Risk Weighted Assets   11.21%
Tier One Leverage Capital $ 10,621 $ 9,611
Capital Required for Capital Adequacy to Risk Weighted Assets 8.00%  
Capital Conservation Buffer Plus Capital required for Capital Adequacy to Risk Weighted Assets 10.50%  
Capital Required to be Well Capitalized to Risk Weighted Assets 10.00%  
Capital $ 11,864 $ 11,504
Tier One Leverage Capital Required for Capital Adequacy to Average Assets 4.00%  
Tier One Leverage Capital Required to be Well Capitalized to Average Assets 5.00%