Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVE FINANCIAL INSTRUMENTS - Offsetting Liabilities (Details)

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DERIVATIVE FINANCIAL INSTRUMENTS - Offsetting Liabilities (Details) - USD ($)
$ in Millions
Jun. 30, 2018
Dec. 31, 2017
Offsetting Derivative Liabilities [Abstract]    
Gross amounts of recognized liabilities $ 406 $ 331
Gross amounts offset in the condensed consolidated balance sheets (204) (245)
Derivative liabilities 202 86
Gross amounts not offset in the condensed consolidated balance sheets, Financial instruments 0 0
Gross amounts not offset in the condensed consolidated balance sheets, Cash collateral received (20) (21)
Net amount $ 182 $ 65