OTHER COMPREHENSIVE INCOME Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive income	$ 78	$ 56	$ 231	$ 169
Net Current Period Other Comprehensive Income (Loss)	(8)	158	(258)	414
Ending Balance	(4,887)	(4,949)	(4,887)	(4,949)
Defined Benefit Pension and Postretirement Items (a)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(2,376)	(2,954)	(2,527)	(3,072)
Other comprehensive income (loss) before reclassifications	0	0	0	1
Amounts reclassified from accumulated other comprehensive income	76	59	227	176
Ending Balance	(2,300)	(2,895)	(2,300)	(2,895)
Change in Cumulative Foreign Currency Translation Adjustments (a)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(2,489)	(2,155)	(2,111)	(2,287)
Other comprehensive income (loss) before reclassifications	(87)	101	(469)	235
Amounts reclassified from accumulated other comprehensive income	0	(1)	2	(1)
Other Comprehensive Income (Loss) Attributable to Noncontrolling Interest	2	1	4	(1)
Ending Balance	(2,574)	(2,054)	(2,574)	(2,054)
Net Gains and Losses on Cash Flow Hedging Derivatives (a)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(16)	1	5	(3)
Other comprehensive income (loss) before reclassifications	1	1	(20)	9
Amounts reclassified from accumulated other comprehensive income	2	(2)	2	(6)
Ending Balance	$ (13)	$ 0	$ (13)	$ 0