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Earnings Per Share (Tables)
3 Months Ended
Mar. 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:
Three Months Ended March 31,
20212020
(In millions, except per share amounts)
Basic Earnings per Share
Net Income Attributable to DTE Energy Company$397 $340 
Less: Allocation of earnings to net restricted stock awards 
Net income available to common shareholders — basic$397 $339 
Average number of common shares outstanding — basic194 192 
Basic Earnings per Common Share$2.05 $1.77 
Diluted Earnings per Share
Net Income Attributable to DTE Energy Company$397 $340 
Less: Allocation of earnings to net restricted stock awards 
Net income available to common shareholders — diluted$397 $339 
Average number of common shares outstanding — diluted194 192 
Diluted Earnings per Common Share(a)
$2.05 $1.76 
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(a)Equity Units excluded from the calculation of diluted EPS were approximately 10.3 million for both the three months ended March 31, 2021 and 2020, as the dilutive stock price threshold was not met.