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INCOME TAXES (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Income Taxes [Line Items]        
Tax expense $ 319 $ (498) $ 1,151 $ 679
Change to accrued withholding taxes related to unremitted foreign earnings     $ 114 1,100
Spin-offs        
Income Taxes [Line Items]        
Tax expense       $ 432