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Segment Information
9 Months Ended
Sep. 30, 2011
Segment Reporting [Abstract] 
SEGMENT INFORMATION
SEGMENT INFORMATION
The Company sets strategic goals, allocates resources and evaluates performance based on the following structure:
Electric Utility segment consists principally of Detroit Edison, which is engaged in the generation, purchase, distribution and sale of electricity to approximately 2.1 million customers in southeastern Michigan.
Gas Utility segment consists of MichCon and Citizens. MichCon is engaged in the purchase, storage, transportation, distribution and sale of natural gas to approximately 1.2 million customers throughout Michigan and the sale of storage and transportation capacity. Citizens distributes natural gas in Adrian, Michigan to approximately 17,000 customers.
Gas Storage and Pipelines consists of natural gas pipeline, gathering and storage businesses.
Unconventional Gas Production is engaged in unconventional gas and oil project development and production.
Power and Industrial Projects is comprised of coke batteries and pulverized coal projects, reduced emission fuel and steel industry fuel-related projects, on-site energy services, renewable power generation, landfill gas recovery and coal transportation, marketing and trading.
Energy Trading consists of energy marketing and trading operations.
Corporate & Other, includes various holding company activities, 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 production tax credits and net operating losses if applicable. The MBT provision of the utility subsidiaries is determined on an individual company basis and recognizes the tax benefit of various tax credits and net operating losses if applicable. See Note 2 for a discussion of the MCIT, which replaces the MBT effective January 1, 2012. The subsidiaries record federal and state income taxes payable to or receivable from DTE Energy based on the federal and state 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 power sales, gas sales and coal transportation services in the following segments:

 
Three Months Ended
 
Nine Months Ended
 
September 30
 
September 30
(in Millions)
2011
 
2010
 
2011
 
2010
Electric Utility
$
7

 
$
8

 
$
25

 
$
23

Gas Utility
1

 
1

 
2

 
1

Gas Storage and Pipelines
1

 
1

 
7

 
3

Power and Industrial Projects
30

 
50

 
119

 
122

Energy Trading
17

 
21

 
54

 
65

Corporate & Other
(12
)
 
(18
)
 
(40
)
 
(51
)
 
$
44

 
$
63

 
$
167

 
$
163



Financial data of the business segments follows:

 
Three Months Ended
 
Nine Months Ended
 
September 30
 
September 30
(in Millions)
2011
 
2010
 
2011
 
2010
Operating Revenues
 
 
 
 
 
 
 
Electric Utility
$
1,517

 
$
1,444

 
$
3,950

 
$
3,798

Gas Utility
159

 
170

 
1,090

 
1,157

Gas Storage and Pipelines
21

 
20

 
69

 
62

Unconventional Gas Production
11

 
7

 
29

 
23

Power and Industrial Projects
259

 
303

 
781

 
846

Energy Trading
342

 
258

 
970

 
661

Corporate & Other
—

 
—

 
2

 
—

Reconciliation & Eliminations
(44
)
 
(63
)
 
(167
)
 
(163
)
Total
$
2,265

 
$
2,139

 
$
6,724

 
$
6,384

Net Income (Loss) Attributable to DTE Energy by Segment:
 
 
 
 
 
 
 
Electric Utility
$
157

 
$
165

 
$
345

 
$
343

Gas Utility
(11
)
 
(6
)
 
69

 
92

Gas Storage and Pipelines
13

 
12

 
42

 
36

Unconventional Gas Production
(2
)
 
(4
)
 
(5
)
 
(9
)
Power and Industrial Projects
12

 
26

 
27

 
66

Energy Trading
22

 
(12
)
 
36

 
—

Corporate & Other (1)
(8
)
 
(18
)
 
47

 
(50
)
Net Income Attributable to DTE Energy
$
183

 
$
163

 
$
561

 
$
478


_____________________________
(1)
The 2011 net income for Corporate & Other includes an income tax benefit of $88 million related to the enactment of the MCIT in the second quarter of 2011. See Note 2.