FAIR VALUE MEASUREMENTS (Additional Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount	$ 0	$ 0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Derivative, Fair Value, Amount Offset Against Collateral, Net	1	26
North America and Europe [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period, fair value measurements using Level 3 inputs	943	1,328
Gain Included in Earnings	(1)	2
Purchases, fair value measurements using Level 3 inputs	1,552	647
Settlements, fair value measurements using Level 3 inputs	(1,257)	(1,034)
Balance at end of period, fair value measurements using Level 3 inputs	$ 1,237	$ 943