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DISCONTINUED OPERATIONS AND SIGNIFICANT DISPOSALS - Discontinued Operations (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Results of Discontinued Operations        
Total revenues, net of interest expense $ 0 $ 0 $ 0 $ 0
Loss from discontinued operations (7) (15) (26) (27)
Benefit for income taxes 0 0 0 (27)
Income (loss) from discontinued operations, net of taxes $ (7) $ (15) $ (26) $ 0