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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2023
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | The following is a reconciliation of DTE Energy's basic and diluted income per share calculation:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2023 |  | 2022 |  | 2023 |  | 2022
| (In millions, except per share amounts)
Basic Earnings per Share |  |  |  |  |  |  |
Net Income Attributable to DTE Energy Company | $ | 332 |  |  | $ | 387 |  |  | $ | 978 |  |  | $ | 818 |
Less: Allocation of earnings to net restricted stock awards | — |  |  | 1 |  |  | 2 |  |  | 2 |
Net income available to common shareholders — basic | $ | 332 |  |  | $ | 386 |  |  | $ | 976 |  |  | $ | 816 |
Average number of common shares outstanding — basic | 206 |  |  | 193 |  |  | 206 |  |  | 193 |
Basic Earnings per Common Share | $ | 1.61 |  |  | $ | 2.00 |  |  | $ | 4.74 |  |  | $ | 4.22 |
Diluted Earnings per Share |  |  |  |  |  |  |
Net Income Attributable to DTE Energy Company | $ | 332 |  |  | $ | 387 |  |  | $ | 978 |  |  | $ | 818 |
Less: Allocation of earnings to net restricted stock awards | — |  |  | 1 |  |  | 2 |  |  | 2 |
Net income available to common shareholders — diluted | $ | 332 |  |  | $ | 386 |  |  | $ | 976 |  |  | $ | 816 |
Average number of common shares outstanding — basic | 206 |  |  | 193 |  |  | 206 |  |  | 193 |
Average performance share awards | — |  |  | 1 |  |  | — |  |  | 1 |
Average number of common shares outstanding — diluted | 206 |  |  | 194 |  |  | 206 |  |  | 194 |
Diluted Earnings per Common Share(a) | $ | 1.61 |  |  | $ | 1.99 |  |  | $ | 4.74 |  |  | $ | 4.21 |
_______________________________________ (a)Equity units excluded from the calculation of diluted EPS were approximately 10.1 million and 10.2 million for the three and nine months ended September 30, 2022, respectively, as the dilutive stock price threshold was not met. The equity units were settled in November 2022 resulting in the issuance of common stock.

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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