USE OF DERIVATIVES, OFFSETTING DISCLOSURES AND CHANGES IN OTHER COMPREHENSIVE INCOME BY COMPONENT - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2010
Derivative Instruments and Hedging Activities Disclosures [Line Items]
SWAP agreement notional amount during period	$ 3,700	$ 100
SWAP agreement average interest rate during period	1.64%	4.09%
Swap agreement notional amount expiring during period	$ 3,800
SWAP agreement average interest rate expiring during period	0.75%
Interest Rate Swap Agreements [Member]
Notional Disclosures [Abstract]
Payment term of LIBOR interest rate agreement		20 years