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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, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Class of Stock [Line Items] |  |  |
Net Income available to Duke Energy common stockholders | $ 3,802 | $ 1,270 | $ 3,707
Income (Loss) From Discontinued Operations, net of tax | (7) | (7) | 7
Accumulated preferred stock dividends adjustment |  | 1 | (15)
Less: Impact of participating securities | 4 | 2 | 5
Income from continuing operations available to Duke Energy common stockholders | $ 3,791 | $ 1,262 | $ 3,694
Weighted average common shares outstanding – basic (in shares) | 769 | 737 | 729
Equity forwards (in shares) |  | 1 |
Weighted average common shares outstanding – diluted (in shares) | 769 | 738 | 729
EPS from continuing operations available to Duke Energy common stockholders |  |  |
Basic (usd per share) | $ 4.93 | $ 1.71 | $ 5.07
Diluted (usd per share) | $ 4.93 | $ 1.71 | $ 5.07
Potentially dilutive items excluded from the calculation (in shares) | 2 | 2 | 2
Dividends declared per share (usd per share) | $ 3.90 | $ 3.82 | $ 3.75
Series A Preferred Stock |  |  |
EPS from continuing operations available to Duke Energy common stockholders |  |  |
Dividends declared on preferred stock (usd per share) | 1.437 | 1.437 | $ 1.03
Series B Preferred Stock |  |  |
EPS from continuing operations available to Duke Energy common stockholders |  |  |
Dividends declared on preferred stock (usd per share) | $ 48.750 | $ 49.292 |

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