OTHER COMPREHENSIVE INCOME Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive income	$ (483)	$ 66
Ending Balance	(4,975)	(4,530)
Defined Benefit Pension and Postretirement Items (a)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(1,916)	(2,527)
Reclassification of stranded tax effects - Defined benefit pension and postretirement adjustments	(527)	0
Amounts reclassified from accumulated other comprehensive income	41	66
Ending Balance	(2,402)	(2,461)
Change in Cumulative Foreign Currency Translation Adjustments (a)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(2,581)	(2,111)
Other comprehensive income (loss) before reclassifications	8	40
Amounts reclassified from accumulated other comprehensive income	4	2
Other Comprehensive Income (Loss) Attributable to Noncontrolling Interest	0	0
Ending Balance	(2,569)	(2,069)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(3)	5
Other comprehensive income (loss) before reclassifications	0	(3)
Reclassification of stranded tax effects - Derivative hedging	(2)	0
Amounts reclassified from accumulated other comprehensive income	1	(2)
Ending Balance	$ (4)	$ 0