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Segment and Related Information
 9 Months Ended
Sep. 30, 2019
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 1.3 million residential, commercial, and industrial customers throughout Michigan and the sale of storage and transportation capacity.
Gas Storage and Pipelines is primarily engaged in services related to the gathering, transportation, and storage of natural gas.
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 and pipeline-quality gas from renewable energy projects.
Energy Trading consists of energy marketing and trading operations.
Corporate and Other includes various holding company activities, holds certain non-utility debt, and holds 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 September 30,
 
Nine Months Ended September 30,
 
2019
 
2018
 
2019
 
2018
 
(In millions)
Electric
$
16

 
$
13

 
$
43

 
$
39

Gas
3

 
3

 
8

 
9

Gas Storage and Pipelines
11

 
7

 
17

 
29

Power and Industrial Projects
160

 
171

 
462

 
488

Energy Trading
4

 
6

 
16

 
18

Corporate and Other
1

 
1

 
2

 
2

 
$
195

 
$
201

 
$
548

 
$
585


Financial data of DTE Energy's business segments follows:
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2019
 
2018
 
2019
 
2018
 
(In millions)
Operating Revenues — Utility operations
 
 
 
 
 
 
 
Electric
$
1,520

 
$
1,521

 
$
3,945

 
$
4,002

Gas
155

 
164

 
1,043

 
969

Operating Revenues — Non-utility operations
 
 
 
 
 
 
 
Gas Storage and Pipelines
126

 
122

 
363

 
363

Power and Industrial Projects
406

 
612

 
1,196

 
1,717

Energy Trading
1,105

 
1,332

 
3,519

 
3,994

Corporate and Other
2

 
—

 
3

 
2

Reconciliation and Eliminations
(195
)
 
(201
)
 
(548
)
 
(585
)
Total
$
3,119

 
$
3,550

 
$
9,521

 
$
10,462


 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2019
 
2018
 
2019
 
2018
 
(In millions)
Net Income (Loss) Attributable to DTE Energy by Segment:
 
 
 
 
 
 
 
Electric
$
307

 
$
305

 
$
587

 
$
608

Gas
(38
)
 
(30
)
 
121

 
88

Gas Storage and Pipelines
60

 
66

 
158

 
188

Power and Industrial Projects
49

 
58

 
104

 
146

Energy Trading
(14
)
 
(13
)
 
12

 
13

Corporate and Other
(45
)
 
(52
)
 
(80
)
 
(114
)
Net Income Attributable to DTE Energy Company
$
319

 
$
334

 
$
902

 
$
929