SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Summary of significant accounting policies - goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Feb. 19, 2014
Goodwill	$ 923	$ 1,152	$ 1,336
Goodwill, Other Changes	(229)
Goodwill, Impairment Loss	$ 0	0	689
Successor
Goodwill, Impairment Loss			$ 689
Lake Charles LNG Transaction [Member]
Goodwill				$ 184
Goodwill, Other Changes		$ (184)