Annual report pursuant to Section 13 and 15(d)

DERIVATIVE FINANCIAL INSTRUMENTS - Offsetting Assets (Details)

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DERIVATIVE FINANCIAL INSTRUMENTS - Offsetting Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Derivative Asset [Abstract]    
Gross amounts of recognized assets $ 1,946 $ 856
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset (889) (404)
Derivative Asset, Total 1,057 452
Derivative Asset, Fair Value, Amount Not Offset Against Collateral [Abstract]    
Gross amounts not offset in the statement of financial position - financial instruments (112) (65)
Gross amounts not offset in the statement of financial position - cash collateral received (142) (29)
Net amount $ 803 $ 358