INCOME TAXES INCOME TAXES - UNCERTAIN TAX POSITIONS (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Beginning balance		$ 3	$ 2	$ 1
Additions based on tax positions and settlements related to the current year	$ 18	19	1	1
Ending balance	$ 22	$ 22	$ 3	$ 2