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Segment and Related Information (Tables)
 9 Months Ended
Sep. 30, 2017
Segment Reporting [Abstract]  
Schedule of Segment Reporting Information, by Segment
Inter-segment billing for goods and services exchanged between segments is based upon tariffed or market-based prices of the provider and primarily consists of the sale of reduced emissions fuel, power sales, and natural gas sales in the following segments:
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2017
 
2016
 
2017
 
2016
 
(In millions)
Electric
$
11

 
$
15

 
$
36

 
$
32

Gas
1

 
5

 
6

 
8

Gas Storage and Pipelines
10

 
2

 
32

 
7

Power and Industrial Projects
138

 
178

 
462

 
476

Energy Trading
8

 
10

 
27

 
28

Corporate and Other
1

 
—

 
2

 
2

 
$
169

 
$
210

 
$
565

 
$
553


Financial data of DTE Energy's business segments follows:
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2017
 
2016
 
2017
 
2016
 
(In millions)
Operating Revenues — Utility operations
 
 
 
 
 
 
 
Electric
$
1,434

 
$
1,608

 
$
3,827

 
$
3,976

Gas
152

 
160

 
929

 
911

Operating Revenues — Non-utility operations
 
 
 
 
 
 
 
Gas Storage and Pipelines
115

 
63

 
333

 
199

Power and Industrial Projects
537

 
524

 
1,592

 
1,414

Energy Trading
1,174

 
782

 
3,217

 
1,807

Corporate and Other
2

 
1

 
3

 
2

Reconciliation and Eliminations
(169
)
 
(210
)
 
(565
)
 
(553
)
Total
$
3,245

 
$
2,928

 
$
9,336

 
$
7,756


Net Income (Loss) Attributable to DTE Energy by Segment:
 
 
 
 
 
 
 
Electric
$
219

 
$
285

 
$
463

 
$
547

Gas
(15
)
 
(4
)
 
93

 
96

Gas Storage and Pipelines
36

 
28

 
121

 
93

Power and Industrial Projects
44

 
34

 
104

 
66

Energy Trading
1

 
(4
)
 
97

 
(34
)
Corporate and Other
(15
)
 
(1
)
 
(31
)
 
(31
)
Net Income Attributable to DTE Energy Company
$
270

 
$
338

 
$
847

 
$
737