Reportable Segments

6 Months Ended

Jun. 30, 2018

Segment Reporting Information [Line Items]

Reportable segments consist of business units defined by the products and services they offer. CMS Energy and Consumers evaluate the performance of each segment based on its contribution to net income available to CMS Energy’s common stockholders.

CMS Energy

The reportable segments for CMS Energy are:


•	electric utility, consisting of regulated activities associated with the generation, transmission, and distribution of electricity in Michigan


•	gas utility, consisting of regulated activities associated with the transportation, storage, and distribution of natural gas in Michigan


•	enterprises, consisting of various subsidiaries engaging in domestic independent power production, the marketing of independent power production, and the development and operation of renewable generation

CMS Energy presents EnerBank, corporate interest and other expenses, and Consumers’ other consolidated entities within other reconciling items.

Consumers

The reportable segments for Consumers are:


•	electric utility, consisting of regulated activities associated with the generation, transmission, and distribution of electricity in Michigan


•	gas utility, consisting of regulated activities associated with the transportation, storage, and distribution of natural gas in Michigan

Consumers’ other consolidated entities are presented within other reconciling items.

Presented in the following tables is financial information by reportable segment:



In Millions
	Three Months Ended								Six Months Ended
June 30	2018				2017				2018				2017
CMS Energy, including Consumers
Operating revenue
Electric utility		$	1,089			$	1,077			$	2,167			$	2,113
Gas utility		306				285				1,083				986
Enterprises		61				55				124				114
Other reconciling items		36				32				71				65
Total operating revenue – CMS Energy		$	1,492			$	1,449			$	3,445			$	3,278
Consumers
Operating revenue
Electric utility		$	1,089			$	1,077			$	2,167			$	2,113
Gas utility		306				285				1,083				986
Total operating revenue – Consumers		$	1,395			$	1,362			$	3,250			$	3,099
CMS Energy, including Consumers
Net income (loss) available to common stockholders
Electric utility		$	130			$	94			$	269			$	218
Gas utility		21				9				124				96
Enterprises		14				7				29				19
Other reconciling items		(26		)		(18		)		(42		)		(42		)
Total net income available to common stockholders – CMS Energy		$	139			$	92			$	380			$	291
Consumers
Net income available to common stockholder
Electric utility		$	130			$	94			$	269			$	218
Gas utility		21				9				124				96
Total net income available to common stockholder – Consumers		$	151			$	103			$	393			$	314



In Millions
	June 30, 2018			December 31, 2017
CMS Energy, including Consumers
Plant, property, and equipment, gross
Electric utility¹		$	15,646		$	15,221
Gas utility¹		7,397			7,080
Enterprises		175			167
Other reconciling items		40			38
Total plant, property, and equipment, gross – CMS Energy		$	23,258		$	22,506
Consumers
Plant, property, and equipment, gross
Electric utility¹		$	15,646		$	15,221
Gas utility¹		7,397			7,080
Other reconciling items		16			17
Total plant, property, and equipment, gross – Consumers		$	23,059		$	22,318
CMS Energy, including Consumers
Total assets
Electric utility¹		$	14,075		$	13,906
Gas utility¹		7,187			7,139
Enterprises		321			342
Other reconciling items		1,729			1,663
Total assets – CMS Energy		$	23,312		$	23,050
Consumers
Total assets
Electric utility¹		$	14,075		$	13,907
Gas utility¹		7,187			7,139
Other reconciling items		21			53
Total assets – Consumers		$	21,283		$	21,099


¹	Amounts include a portion of Consumers’ other common assets attributable to both the electric and gas utility businesses.

Consumers Energy Company