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Segment and Related Information
 9 Months Ended
Sep. 30, 2021
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 2.3 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.
DTE Vantage, formerly the Power and Industrial Projects segment, 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 certain investments, including funds supporting regional development and economic growth.
DTE Energy completed the separation of DT Midstream on July 1, 2021, which was comprised of the Gas Storage and Pipelines segment and also certain DTE Energy holding company activity within the Corporate and Other segment. Amounts relating to DT Midstream have been classified as discontinued operations, and Gas Storage and Pipelines is no longer a reportable segment of DTE Energy. Refer to Note 4 to the Consolidated Financial Statements, “Dispositions and Impairments,” for additional information.
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 also 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, natural gas sales, and renewable natural gas sales in the following segments:
Three Months Ended September 30,Nine Months Ended September 30,
2021202020212020
(In millions)
Electric$17 $16 $48 $46 
Gas3 4 10 12 
DTE Vantage125 134 463 308 
Energy Trading9 9 35 23 
Corporate and Other1 1 2 2 
$155 $164 $558 $391 
Financial data of DTE Energy's business segments follows:
Three Months Ended September 30,Nine Months Ended September 30,
2021202020212020
(In millions)
Operating Revenues — Utility operations
Electric$1,700 $1,690 $4,468 $4,211 
Gas193 173 1,070 964 
Operating Revenues — Non-utility operations
Electric2 3 9 10 
DTE Vantage372 324 1,132 850 
Energy Trading1,602 1,061 4,208 2,714 
Corporate and Other1 1 2 2 
Reconciliation and Eliminations(a)
(155)(172)(572)(408)
Total$3,715 $3,080 $10,317 $8,343 
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(a)Includes $14 million for the nine months ended September 30, 2021 and $8 million and $17 million for the three and nine months ended September 30, 2020, respectively, for eliminations related to DTE Energy's prior Gas Storage and Pipelines segment that remain in continuing operations. Eliminations for these revenues are offset by related cost eliminations and have no impact on DTE Energy net income.
Three Months Ended September 30,Nine Months Ended September 30,
2021202020212020
(In millions)
Net Income (Loss) Attributable to DTE Energy by Segment:
Electric$342 $398 $788 $675 
Gas(30)(20)146 102 
DTE Vantage73 47 115 102 
Energy Trading(52)(28)(173)5 
Corporate and Other(275)(25)(381)(40)
Discontinued Operations(33)104 106 249 
Net Income Attributable to DTE Energy Company$25 $476 $601 $1,093