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Earnings Per Share (Tables)
 3 Months Ended
Mar. 31, 2024
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,
20242023
(In millions, except per share amounts)
Basic Earnings per Share
Net Income Attributable to DTE Energy Company$313 $445 
Less: Allocation of earnings to net restricted stock awards1 1 
Net income available to common shareholders — basic$312 $444 
Average number of common shares outstanding — basic206 206 
Basic Earnings per Common Share$1.51 $2.16 
Diluted Earnings per Share
Net Income Attributable to DTE Energy Company$313 $445 
Less: Allocation of earnings to net restricted stock awards1 1 
Net income available to common shareholders — diluted$312 $444 
Average number of common shares outstanding — basic206 206 
Average performance share awards1 — 
Average number of common shares outstanding — diluted207 206 
Diluted Earnings per Common Share
$1.51 $2.16