ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($)	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Accumulated Other Comprehensive Income Loss [Line Items]
Balance beginning of period December 31,	$ (2,235,000,000)	$ (2,714,000,000)
Other comprehensive income (loss) before reclassifications	14,000,000	(52,000,000)
Amounts reclassified from accumulated other comprehensive income	(1,000,000)	(71,000,000)
Net current period other comprehensive income (loss)	13,000,000	(123,000,000)
Balance end of period	(2,222,000,000)	(2,837,000,000)
Foreign Exchange Translation Adjustment [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Balance beginning of period December 31,	(1,981,000,000)	(1,944,000,000)
Other comprehensive income (loss) before reclassifications	12,000,000	56,000,000
Amounts reclassified from accumulated other comprehensive income	0	0
Net current period other comprehensive income (loss)	12,000,000	56,000,000
Balance end of period	(1,969,000,000)	(1,888,000,000)
Pension and Other Postretirement Benefits Adjustments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Balance beginning of period December 31,	(202,000,000)	(879,000,000)
Other comprehensive income (loss) before reclassifications	0	(46,000,000)
Amounts reclassified from accumulated other comprehensive income	(32,000,000)	(27,000,000)
Net current period other comprehensive income (loss)	(32,000,000)	(73,000,000)
Balance end of period	(234,000,000)	(952,000,000)
Changes in Fair Value of Effective Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Balance beginning of period December 31,	(52,000,000)	109,000,000
Other comprehensive income (loss) before reclassifications	2,000,000	(62,000,000)
Amounts reclassified from accumulated other comprehensive income	31,000,000	(44,000,000)
Net current period other comprehensive income (loss)	33,000,000	(106,000,000)
Balance end of period	$ (19,000,000)	$ 3,000,000