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, 2019
Dec. 31, 2018
Derivative Asset [Abstract]    
Gross amounts of recognized assets $ 856 $ 500
Gross amounts offset in the consolidated balance sheets (404) (291)
Net amounts of assets presented in the consolidated balance sheets 452 209
Derivative Asset, Fair Value, Amount Not Offset Against Collateral [Abstract]    
Gross amounts not offset in the statement of financial position - financial instruments (65) (4)
Gross amounts not offset in the statement of financial position - cash collateral received (29) (53)
Net amount $ 358 $ 152