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Reportable Segments (Tables)
3 Months Ended
Mar. 31, 2019
Segment Reporting Information [Line Items]  
Schedule Of Financial Information By Reportable Segments
Presented in the following tables is financial information by reportable segment: 
In Millions
 
Three Months Ended March 31
2019
 
2018
 
CMS Energy, including Consumers
 
 
 
 
Operating revenue
 
 
 
 
Electric utility
 
$
1,103

 
$
1,078

Gas utility
 
840

 
777

Enterprises
 
67

 
63

Other reconciling items
 
49

 
35

Total operating revenue – CMS Energy
 
$
2,059

 
$
1,953

Consumers
 
 
 
 
Operating revenue
 
 
 
 
Electric utility
 
$
1,103

 
$
1,078

Gas utility
 
840

 
777

Total operating revenue – Consumers
 
$
1,943

 
$
1,855

CMS Energy, including Consumers
 
 
 
 
Net income (loss) available to common stockholders
 
 
 
 
Electric utility
 
$
105

 
$
139

Gas utility
 
121

 
103

Enterprises
 
1

 
15

Other reconciling items
 
(14
)
 
(16
)
Total net income available to common stockholders – CMS Energy
 
$
213

 
$
241

Consumers
 
 
 
 
Net income available to common stockholder
 
 
 
 
Electric utility
 
$
105

 
$
139

Gas utility
 
121

 
103

Total net income available to common stockholder – Consumers
 
$
226

 
$
242

In Millions
 
 
March 31, 2019
 
December 31, 2018
 
CMS Energy, including Consumers
 
 
 
 
Plant, property, and equipment, gross
 
 
 
 
Electric utility1
 
$
16,196

 
$
16,027

Gas utility1
 
8,087

 
7,919

Enterprises
 
404

 
412

Other reconciling items
 
42

 
42

Total plant, property, and equipment, gross – CMS Energy
 
$
24,729

 
$
24,400

Consumers
 
 
 
 
Plant, property, and equipment, gross
 
 
 
 
Electric utility1
 
$
16,196

 
$
16,027

Gas utility1
 
8,087

 
7,919

Other reconciling items
 
17

 
17

Total plant, property, and equipment, gross – Consumers
 
$
24,300

 
$
23,963

CMS Energy, including Consumers
 
 
 
 
Total assets
 
 
 
 
Electric utility1
 
$
14,237

 
$
14,079

Gas utility1
 
7,681

 
7,806

Enterprises
 
524

 
540

Other reconciling items
 
2,351

 
2,104

Total assets – CMS Energy
 
$
24,793

 
$
24,529

Consumers
 
 
 
 
Total assets
 
 
 
 
Electric utility1
 
$
14,300

 
$
14,143

Gas utility1
 
7,729

 
7,853

Other reconciling items
 
23

 
29

Total assets – Consumers
 
$
22,052

 
$
22,025

1 
Amounts include a portion of Consumers’ other common assets attributable to both the electric and gas utility businesses.
Consumers Energy Company  
Segment Reporting Information [Line Items]  
Schedule Of Financial Information By Reportable Segments
Presented in the following tables is financial information by reportable segment: 
In Millions
 
Three Months Ended March 31
2019
 
2018
 
CMS Energy, including Consumers
 
 
 
 
Operating revenue
 
 
 
 
Electric utility
 
$
1,103

 
$
1,078

Gas utility
 
840

 
777

Enterprises
 
67

 
63

Other reconciling items
 
49

 
35

Total operating revenue – CMS Energy
 
$
2,059

 
$
1,953

Consumers
 
 
 
 
Operating revenue
 
 
 
 
Electric utility
 
$
1,103

 
$
1,078

Gas utility
 
840

 
777

Total operating revenue – Consumers
 
$
1,943

 
$
1,855

CMS Energy, including Consumers
 
 
 
 
Net income (loss) available to common stockholders
 
 
 
 
Electric utility
 
$
105

 
$
139

Gas utility
 
121

 
103

Enterprises
 
1

 
15

Other reconciling items
 
(14
)
 
(16
)
Total net income available to common stockholders – CMS Energy
 
$
213

 
$
241

Consumers
 
 
 
 
Net income available to common stockholder
 
 
 
 
Electric utility
 
$
105

 
$
139

Gas utility
 
121

 
103

Total net income available to common stockholder – Consumers
 
$
226

 
$
242

In Millions
 
 
March 31, 2019
 
December 31, 2018
 
CMS Energy, including Consumers
 
 
 
 
Plant, property, and equipment, gross
 
 
 
 
Electric utility1
 
$
16,196

 
$
16,027

Gas utility1
 
8,087

 
7,919

Enterprises
 
404

 
412

Other reconciling items
 
42

 
42

Total plant, property, and equipment, gross – CMS Energy
 
$
24,729

 
$
24,400

Consumers
 
 
 
 
Plant, property, and equipment, gross
 
 
 
 
Electric utility1
 
$
16,196

 
$
16,027

Gas utility1
 
8,087

 
7,919

Other reconciling items
 
17

 
17

Total plant, property, and equipment, gross – Consumers
 
$
24,300

 
$
23,963

CMS Energy, including Consumers
 
 
 
 
Total assets
 
 
 
 
Electric utility1
 
$
14,237

 
$
14,079

Gas utility1
 
7,681

 
7,806

Enterprises
 
524

 
540

Other reconciling items
 
2,351

 
2,104

Total assets – CMS Energy
 
$
24,793

 
$
24,529

Consumers
 
 
 
 
Total assets
 
 
 
 
Electric utility1
 
$
14,300

 
$
14,143

Gas utility1
 
7,729

 
7,853

Other reconciling items
 
23

 
29

Total assets – Consumers
 
$
22,052

 
$
22,025

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