OTHER COMPREHENSIVE INCOME Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive income	$ 40	$ 87	$ (443)	$ 153
Other comprehensive income (loss) attributable to noncontrolling interest	0	(2)	0	(2)
Ending Balance	(4,870)	(4,881)	(4,870)	(4,881)
Defined Benefit Pension and Postretirement Items (a)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(2,402)	(2,461)	(1,916)	(2,527)
Reclassification of stranded tax effects - Defined benefit pension and postretirement adjustments	0	0	(527)	0
Amounts reclassified from accumulated other comprehensive income	40	85	81	151
Ending Balance	(2,362)	(2,376)	(2,362)	(2,376)
Change in Cumulative Foreign Currency Translation Adjustments (a)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(2,569)	(2,069)	(2,581)	(2,111)
Other comprehensive income (loss) before reclassifications	61	(422)	69	(382)
Amounts reclassified from accumulated other comprehensive income	0	0	4	2
Other comprehensive income (loss) attributable to noncontrolling interest	0	2	0	2
Ending Balance	(2,508)	(2,489)	(2,508)	(2,489)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(4)	0	(3)	5
Other comprehensive income (loss) before reclassifications	4	(18)	4	(21)
Reclassification of stranded tax effects - Derivative hedging	0	0	(2)	0
Amounts reclassified from accumulated other comprehensive income	0	2	1	0
Ending Balance	$ 0	$ (16)	$ 0	$ (16)