NONCONTROLLING INTERESTS Noncontrolling Interests (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Noncontrolling Interest [Line Items]
Balance at beginning of period	$ 1,186	$ 1,242
Net income attributable to noncontrolling interests	35	27
Distributions to noncontrolling interests	(24)	(21)
Cumulative translation adjustments	(6)	25
Other	(1)	1
Balance at end of period	$ 1,190	$ 1,274