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Segment and Related Information
 6 Months Ended
Jun. 30, 2016
Segment Reporting [Abstract]  
Segment and Related Information
SEGMENT AND RELATED INFORMATION
DTE Energy sets strategic goals, allocates resources, and evaluates performance based on the following structure:
Electric segment consists principally of DTE Electric, which is engaged in the generation, purchase, distribution, and sale of electricity to approximately 2.2 million residential, commercial, and industrial customers in southeastern Michigan.
Gas segment consists principally of DTE Gas, which is engaged in the purchase, storage, transportation, distribution, and sale of natural gas to approximately 1.2 million residential, commercial, and industrial customers throughout Michigan and the sale of storage and transportation capacity.
Gas Storage and Pipelines consists of natural gas pipeline, gathering, and storage businesses.
Power and Industrial Projects is comprised primarily of projects that deliver energy and utility-type products and services to industrial, commercial, and institutional customers, produce reduced emissions fuel, and sell electricity from renewable energy projects.
Energy Trading consists of energy marketing and trading operations.
Corporate and Other includes various holding company activities, and holds certain non-utility debt and energy-related investments.
The federal income tax provisions or benefits of DTE Energy’s subsidiaries are determined on an individual company basis and recognize the tax benefit of tax credits and net operating losses, if applicable. The state and local income tax provisions of the utility subsidiaries are determined on an individual company basis and recognize the tax benefit of various tax credits and net operating losses, if applicable. The subsidiaries record federal, state, and local income taxes payable to or receivable from DTE Energy based on the federal, state, and local tax provisions of each company.
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 June 30,
 
Six Months Ended June 30,
 
2016
 
2015
 
2016
 
2015
 
(In millions)
Inter-segment Revenues
 
 
 
 
 
 
 
Electric
$
8

 
$
9

 
$
17

 
$
18

Gas
3

 
—

 
3

 
1

Gas Storage and Pipelines
3

 
5

 
5

 
6

Power and Industrial Projects
150

 
215

 
298

 
395

Energy Trading
8

 
7

 
18

 
16

Corporate and Other
2

 
—

 
2

 
1

 
$
174

 
$
236

 
$
343

 
$
437


Financial data of the DTE Energy business segments follows:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2016
 
2015
 
2016
 
2015
 
(In millions)
Operating Revenues — Utility operations
 
 
 
 
 
 
 
Electric
$
1,215

 
$
1,148

 
$
2,368

 
$
2,351

Gas
231

 
218

 
751

 
865

Operating Revenues — Non-utility operations
 
 
 
 
 
 
 
Gas Storage and Pipelines
69

 
57

 
136

 
114

Power and Industrial Projects
444

 
556

 
890

 
1,123

Energy Trading
476

 
524

 
1,025

 
1,235

Corporate and Other
1

 
1

 
1

 
1

Reconciliation and Eliminations
(174
)
 
(236
)
 
(343
)
 
(437
)
Total
$
2,262

 
$
2,268

 
$
4,828

 
$
5,252


Net Income (Loss) Attributable to DTE Energy by Segment:
 
 
 
 
 
 
 
Electric
$
135

 
$
99

 
$
262

 
$
235

Gas
13

 
(7
)
 
100

 
104

Gas Storage and Pipelines
35

 
25

 
65

 
52

Power and Industrial Projects
15

 
8

 
32

 
41

Energy Trading
(23
)
 
(3
)
 
(30
)
 
(12
)
Corporate and Other
(23
)
 
(13
)
 
(30
)
 
(38
)
Net Income Attributable to DTE Energy Company
$
152

 
$
109

 
$
399

 
$
382