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Segment and Related Information
 3 Months Ended
Mar. 31, 2017
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 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, 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 March 31,
 
2017
 
2016
 
(In millions)
Electric
$
12

 
$
9

Gas
3

 
—

Gas Storage and Pipelines
7

 
2

Power and Industrial Projects
168

 
148

Energy Trading
11

 
10

Corporate and Other
1

 
—

 
$
202

 
$
169


Financial data of DTE Energy's business segments follows:
 
Three Months Ended March 31,
 
2017
 
2016
 
(In millions)
Operating Revenues — Utility operations
 
 
 
Electric
$
1,175

 
$
1,153

Gas
557

 
520

Operating Revenues — Non-utility operations
 
 
 
Gas Storage and Pipelines
105

 
67

Power and Industrial Projects
548

 
446

Energy Trading
1,052

 
549

Corporate and Other
1

 
—

Reconciliation and Eliminations
(202
)
 
(169
)
Total
$
3,236

 
$
2,566


Net Income (Loss) Attributable to DTE Energy by Segment:
 
 
 
Electric
$
106

 
$
127

Gas
107

 
87

Gas Storage and Pipelines
45

 
30

Power and Industrial Projects
30

 
17

Energy Trading
96

 
(7
)
Corporate and Other
16

 
(7
)
Net Income Attributable to DTE Energy Company
$
400

 
$
247