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Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2025
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:
202520242023
(In millions, except per share amounts)
Basic Earnings per Share
Net Income Attributable to DTE Energy Company1,462 $1,404 $1,397 
Less: Allocation of earnings to net restricted stock awards3 3 3 
Net income available to common shareholders — basic$1,459 $1,401 $1,394 
Average number of common shares outstanding — basic207 207 206 
Basic Earnings per Common Share$7.04 $6.78 $6.77 
Diluted Earnings per Share
Net Income Attributable to DTE Energy Company$1,462 $1,404 $1,397 
Less: Allocation of earnings to net restricted stock awards3 3 3 
Net income available to common shareholders — diluted$1,459 $1,401 $1,394 
Average number of common shares outstanding — diluted207 207 206 
Diluted Earnings per Common Share
$7.03 $6.77 $6.76