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Stockholders' Equity (Earnings Per Share Data) (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Class of Stock [Line Items]      
Net Income available to Duke Energy common stockholders $ 4,912 $ 4,402 $ 2,735
Net (loss) income from discontinued operations attributable to Duke Energy Corporation 1 7 (1,391)
Accumulated preferred stock dividends adjustment 0 14 0
Less: Impact of participating securities 6 6 6
Income from continuing operations available to Duke Energy common stockholders 4,905 4,403 4,120
Income (Loss) From Discontinued Operations, net of tax 1 10 (1,455)
Add: Loss (Income) attributable to NCI $ 0 $ (3) $ 64
Weighted average common shares outstanding – basic (in shares) 777 772 771
Weighted average common shares outstanding – diluted (in shares) 777 772 771
EPS from continuing operations available to Duke Energy common stockholders      
Basic (usd per share) $ 6.31 $ 5.70 $ 5.35
Diluted (usd per share) 6.31 5.70 5.35
Earnings (Loss) Per Share from discontinued operations attributable to Duke Energy common stockholders      
Basic (usd per share) 0 0.01 (1.81)
Diluted (usd per share) $ 0 $ 0.01 $ (1.81)
Potentially dilutive items excluded from the calculation (in shares) 2 2 2
Dividends declared per share (usd per share) $ 4.22 $ 4.14 $ 4.06
Series A Preferred Stock      
Earnings (Loss) Per Share from discontinued operations attributable to Duke Energy common stockholders      
Dividends declared on preferred stock (usd per share) $ 1.437 1.437 1.437
Cumulative annual dividend rate (as a percent) 5.75%    
Liquidation preference per share (in usd per share) $ 25    
Series B Preferred Stock      
Earnings (Loss) Per Share from discontinued operations attributable to Duke Energy common stockholders      
Dividends declared on preferred stock (usd per share) $ 0 $ 48.750 $ 48.750
Cumulative annual dividend rate (as a percent) 4.875%