ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) 2 (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
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	(1,165,000,000)	507,000,000
Amounts reclassified from accumulated other comprehensive income (loss)	(41,000,000)	(28,000,000)
Spin-off	4,000,000
Net current period other comprehensive income (loss)	(1,202,000,000)	479,000,000	$ (179,000,000)
Balance end of period	(3,437,000,000)	(2,235,000,000)	(2,714,000,000)
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	(685,000,000)	(37,000,000)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Spin-off	(43,000,000)
Net current period other comprehensive income (loss)	(728,000,000)	(37,000,000)
Balance end of period	(2,709,000,000)	(1,981,000,000)	(1,944,000,000)
Pension and Other Postretirement 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	(569,000,000)	645,000,000
Amounts reclassified from accumulated other comprehensive income (loss)	(37,000,000)	32,000,000
Spin-off	47,000,000
Net current period other comprehensive income (loss)	(559,000,000)	677,000,000
Balance end of period	(761,000,000)	(202,000,000)	(879,000,000)
Changes in Fair Value of Effective Cash Flow Hedges
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	89,000,000	(101,000,000)
Amounts reclassified from accumulated other comprehensive income (loss)	(4,000,000)	(60,000,000)
Spin-off	0
Net current period other comprehensive income (loss)	85,000,000	(161,000,000)
Balance end of period	$ 33,000,000	$ (52,000,000)	$ 109,000,000