DEBT (Details Narraive 2)	12 Months Ended
	Dec. 31, 2014
Debt Instrument Variable Rate Base US Federal Funds [Member]
Short-term Debt [Line Items]
Description of variable rate	Federal Funds
Basis spread on variable rate (as a percent)	0.50%
Debt Instrument Variable Rate Base Adjusted LIBOR [Member]
Short-term Debt [Line Items]
Description of variable rate	Adjusted LIBO Rate determined on a daily basis for an interest period of one
Basis spread on variable rate (as a percent)	0.75%
Maximum [Member] | Debt Instrument Variable Rate Base Adjusted LIBOR [Member]
Short-term Debt [Line Items]
Basis spread on variable rate (as a percent)	1.00%
Minimum [Member] | Debt Instrument Variable Rate Base Adjusted LIBOR [Member]
Short-term Debt [Line Items]
Basis spread on variable rate (as a percent)	0.75%