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Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2021
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 for the years ended December 31:
202120202019
(In millions, except per share amounts)
Basic Earnings per Share
Net Income Attributable to DTE Energy Company — continuing operations$796 $1,054 $955 
Less: Allocation of earnings to net restricted stock awards(2)(2)(2)
$794 $1,052 $953 
Net Income Attributable to DTE Energy Company — discontinued operations111 314 214 
Net income available to common shareholders — basic$905 $1,366 $1,167 
Average number of common shares outstanding — basic193 193 185 
Income from continuing operations$4.11 $5.46 $5.16 
Income from discontinued operations0.57 1.63 1.16 
Basic Earnings per Common Share$4.68 $7.09 $6.32 
Diluted Earnings per Share
Net Income Attributable to DTE Energy Company — continuing operations$796 $1,054 $955 
Less: Allocation of earnings to net restricted stock awards(2)(2)(2)
$794 $1,052 $953 
Net Income Attributable to DTE Energy Company — discontinued operations111 314 214 
Net income available to common shareholders — diluted$905 $1,366 $1,167 
Average number of common shares outstanding — basic193 193 185 
    Average dilutive equity units and performance share awards1 — — 
Average number of common shares outstanding — diluted194 193 185 
Income from continuing operations$4.10 $5.45 $5.15 
Income from discontinued operations0.57 1.63 1.16 
Diluted Earnings per Common Share(a)
$4.67 $7.08 $6.31 
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(a)Equity units excluded from the calculation of diluted EPS were approximately 11.5 million for the year ended December 31, 2021 and 10.3 million for the years ended December 31, 2020 and 2019, respectively, as the dilutive stock price threshold was not met. For more information regarding equity units, see Note 14 to the Consolidated Financial Statements, "Long-Term Debt."