FINANCIAL CHARGES AND OTHER (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
FINANCIAL CHARGES AND OTHER
Interest expense	$ 58	$ 48	$ 42
Amortization of debt issue costs	1	1	1	[1]
Net realized loss related to the interest rate swaps and options	2	2	1
Other	(5)	(1)
Financial charges and other	$ 56	$ 50	$ 44	[1]

[1] Recast as discussed in Note 2 and Note 6.