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NONCONTROLLING INTERESTS Noncontrolling Interests (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Noncontrolling Interest [Line Items]    
Balance at beginning of period $ 1,138 $ 1,186
Net income attributable to noncontrolling interests 45 35
Distributions to noncontrolling interests (9) (24)
Cumulative translation adjustments 7 (6)
Other (1) (1)
Balance at end of period $ 1,180 $ 1,190