Reportable Business Segments

3 Months Ended

Mar. 31, 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 March 31, 2017
	Revenues from External Customers		Inter-segment Revenues			Operating Income (Loss)			Total Assets as of March 31, 2017
	(in millions)
Natural Gas Distribution	$	907	$	9		$	164		$	5,975
Energy Services	1,185		11			35			1,326
Midstream Investments (1)	—		—			—			2,502
Other Operations	1		—			(5		)	75
Reconciling Eliminations	—		(20		)	—			(521		)
Consolidated	$	2,093	$	—		$	194		$	9,357

	For the Three Months Ended March 31, 2016
	Revenues from External Customers		Inter-segment Revenues			Operating Income		Total Assets as of December 31, 2016
	(in millions)
Natural Gas Distribution	$	888	$	7		$	160	$	6,099
Energy Services	432		7			6		1,102
Midstream Investments (1)	—		—			—		2,505
Other Operations	—		—			—		75
Reconciling Eliminations	—		(14		)	—		(563		)
Consolidated	$	1,320	$	—		$	166	$	9,218

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

	Three Months Ended March 31,
	2017		2016
	(in millions)
Enable	$	72	$	60