PROPERTY, PLANT AND EQUIPMENT Property, Plant and Equipment - PPE Type (Details) (USD $) In Millions, unless otherwise specified																	12 Months Ended
	Dec. 31, 2012 Successor	Dec. 31, 2012 Successor Transmission	Dec. 31, 2012 Successor Gathering	Dec. 31, 2012 Successor Underground storage	Dec. 31, 2012 Successor General plant - LNG	Dec. 31, 2012 Successor General plant - other	Dec. 31, 2012 Successor Plant in service	Dec. 31, 2012 Successor Construction work in progress	Dec. 31, 2011 Predecessor	Dec. 31, 2011 Predecessor Transmission	Dec. 31, 2011 Predecessor Gathering	Dec. 31, 2011 Predecessor Underground storage	Dec. 31, 2011 Predecessor General plant - LNG	Dec. 31, 2011 Predecessor General plant - other	Dec. 31, 2011 Predecessor Plant in service	Dec. 31, 2011 Predecessor Construction work in progress	Dec. 31, 2012 Minimum Transmission	Dec. 31, 2012 Minimum Underground storage	Dec. 31, 2012 Minimum General plant - LNG	Dec. 31, 2012 Minimum General plant - other	Dec. 31, 2012 Maximum Transmission	Dec. 31, 2012 Maximum Gathering	Dec. 31, 2012 Maximum Underground storage	Dec. 31, 2012 Maximum General plant - LNG	Dec. 31, 2012 Maximum General plant - other
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment		$ 2,580	$ 114	$ 306	$ 966	$ 110	$ 4,076			$ 2,321	$ 108	$ 322	$ 1,119	$ 176	$ 4,046
Property, Plant and Equipment, Estimated Useful Lives																	P5Y0M	P5Y0M	P5Y0M	P3Y0M	P46Y0M	P26Y0M	P46Y0M	P40Y0M	P40Y0M
Construction work in progress	45							45	42							42
Total property, plant and equipment	4,121								4,088
Accumulated depreciation and amortization	(57)								(733)
Net property, plant and equipment	$ (4,064)								$ (3,355)