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DISCONTINUED OPERATIONS AND SIGNIFICANT DISPOSALS - Discontinued Operations (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Results of Discontinued Operations    
Total revenues, net of interest expense $ 0 $ 0
Loss from discontinued operations (2) (18)
Benefit for income taxes 0 0
Income (loss) from discontinued operations, net of taxes $ (2) $ (18)