EQUITY - Changes in Accumulated Other Comprehensive (Loss) Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Amounts reclassified from Accumulated other comprehensive loss (income)			$ 101
Net current-period Other comprehensive income (loss)	$ 24	$ (312)	42	$ (716)
Currency translation and related hedging instruments [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(2,492)
Other comprehensive (loss) income before reclassifications			(57)
Amounts reclassified from Accumulated other comprehensive loss (income)			0
Net current-period Other comprehensive income (loss)			(57)
Ending balance	(2,549)		(2,549)
Pensions and other postretirement benefits [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(1,374)
Other comprehensive (loss) income before reclassifications			33
Amounts reclassified from Accumulated other comprehensive loss (income)			99
Net current-period Other comprehensive income (loss)			132
Ending balance	(1,242)		(1,242)
Cash flow hedges [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			3
Other comprehensive (loss) income before reclassifications			(35)
Amounts reclassified from Accumulated other comprehensive loss (income)			2
Net current-period Other comprehensive income (loss)			(33)
Ending balance	(30)		(30)
Total AOCI Attributable to Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(3,863)
Other comprehensive (loss) income before reclassifications			(59)
Amounts reclassified from Accumulated other comprehensive loss (income)			101
Net current-period Other comprehensive income (loss)			42
Ending balance	$ (3,821)		$ (3,821)