FINANCIAL INSTRUMENTS AND NON-RECURRING FAIR VALUE MEASUREMENTS - Schedule of Non-Recurring Fair Value Adjustments (Details) - Non-recurring - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value adjustments to assets	$ (1,676)	$ (24)	$ (1,748)	$ (270)
Financing receivables
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value adjustments to assets	(1)	0	(1)	(14)
Cost and equity method investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value adjustments to assets	(58)	(2)	(89)	(95)
Long-lived assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value adjustments to assets	(671)	(21)	(712)	(161)
Goodwill
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value adjustments to assets	$ (947)	$ 0	$ (947)	$ 0