Unaudited Quarterly Information

12 Months Ended

Dec. 31, 2013

Unaudited Quarterly Information [Abstract]

Quarterly Financial Information [Text Block]

Unaudited Quarterly Information

Summarized quarterly financial data is as follows:

	Year Ended December 31, 2013
	First Quarter		Second Quarter (1)			Third Quarter		Fourth Quarter
	(in millions)
Revenues	$	1,853	$	1,235		$	891	$	1,543
Operating income	250		56			4		91
Net income (loss)	128		(162		)	32		66

	Year Ended December 31, 2012
	First Quarter		Second Quarter		Third Quarter (2)			Fourth Quarter
	(in millions)
Revenues	$	1,550	$	846	$	954		$	1,551
Operating income (loss)	229		106		(152		)	211
Net income (loss)	118		42		(127		)	104

(1) Effective May 1, 2013, CERC Corp. contributed CenterPoint Midstream to Enable.  See Note 2(b) and Note 10 for further discussion on the formation of Enable and CERC’s investment in Enable, respectively.

(2) See Note 2(b) and Note (4) for further discussion on the acquisition of additional interest in Waskom and the goodwill impairment charge, respectively.