OTHER COMPREHENSIVE INCOME Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive income	$ 87	$ 58	$ 149	$ 113
Net Current Period Other Comprehensive Income (Loss)	(353)	45	(250)	256
Ending Balance	(4,881)	(5,108)	(4,881)	(5,108)
Defined Benefit Pension and Postretirement Items (a)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(2,461)	(3,016)	(2,527)	(3,072)
Other comprehensive income (loss) before reclassifications	0	2	0	1
Amounts reclassified from accumulated other comprehensive income	85	60	151	117
Ending Balance	(2,376)	(2,954)	(2,376)	(2,954)
Change in Cumulative Foreign Currency Translation Adjustments (a)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(2,069)	(2,140)	(2,111)	(2,287)
Other comprehensive income (loss) before reclassifications	(422)	(14)	(382)	134
Amounts reclassified from accumulated other comprehensive income	0	0	2	0
Other Comprehensive Income (Loss) Attributable to Noncontrolling Interest	2	(1)	2	(2)
Ending Balance	(2,489)	(2,155)	(2,489)	(2,155)
Net Gains and Losses on Cash Flow Hedging Derivatives (a)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	0	4	5	(3)
Other comprehensive income (loss) before reclassifications	(18)	(1)	(21)	8
Amounts reclassified from accumulated other comprehensive income	2	(2)	0	(4)
Ending Balance	$ (16)	$ 1	$ (16)	$ 1