Reportable Business Segments

9 Months Ended

Sep. 30, 2017

Segment Reporting [Abstract]

Reportable Business Segments [Text Block]

Reportable Business Segments

CERC’s determination of reportable business segments considers the strategic operating units under which it manages sales, allocates resources and assesses performance of various products and services to wholesale or retail customers in differing regulatory environments. CERC uses operating income as the measure of profit or loss for its business segments other than Midstream Investments, where it uses equity in earnings of unconsolidated affiliates.

CERC’s reportable business segments include the following: Natural Gas Distribution, Energy Services, Midstream Investments and Other Operations.  Natural Gas Distribution consists of intrastate natural gas sales to, and natural gas transportation and distribution for, residential, commercial, industrial and institutional customers. Energy Services represents CERC’s non-rate regulated gas sales and services operations. Midstream Investments consists of CERC’s equity investment in Enable. The Other Operations business segment includes unallocated corporate costs and inter-segment eliminations.

Financial data for business segments is as follows:

	For the Three Months Ended September 30, 2017
	Revenues from External Customers		Inter-segment Revenues			Operating Income
	(in millions)
Natural Gas Distribution	$	390	$	8		$	19
Energy Services	861		10			7
Midstream Investments (1)	—		—			—
Other Operations	—		—			—
Reconciling Eliminations	—		(18		)	—
Consolidated	$	1,251	$	—		$	26

	For the Three Months Ended September 30, 2016
	Revenues from External Customers		Inter-segment Revenues			Operating Income (Loss)
	(in millions)
Natural Gas Distribution	$	370	$	7		$	22
Energy Services	608		6			5
Midstream Investments (1)	—		—			—
Other Operations	—		—			(1		)
Reconciling Eliminations	—		(13		)	—
Consolidated	$	978	$	—		$	26

	For the Nine Months Ended September 30, 2017
	Revenues from External Customers		Inter-segment Revenues			Operating Income (Loss)			Total Assets as of September 30, 2017
	(in millions)
Natural Gas Distribution	$	1,767	$	24		$	220		$	6,067
Energy Services	2,964		34			58			1,337
Midstream Investments (1)	—		—			—			2,481
Other Operations	—		—			(5		)	73
Reconciling Eliminations	—		(58		)	—			(582		)
Consolidated	$	4,731	$	—		$	273		$	9,376

	For the Nine Months Ended September 30, 2016
	Revenues from External Customers		Inter-segment Revenues			Operating Income (Loss)			Total Assets as of December 31, 2016
	(in millions)
Natural Gas Distribution	$	1,672	$	21		$	202		$	6,099
Energy Services	1,433		17			11			1,102
Midstream Investments (1)	—		—			—			2,505
Other Operations	—		—			(3		)	75
Reconciling Eliminations	—		(38		)	—			(563		)
Consolidated	$	3,105	$	—		$	210		$	9,218

(1) Midstream Investments’ equity earnings are as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2017		2016		2017		2016
	(in millions)
Enable	$	68	$	73	$	199	$	164