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Stockholders' Equity (Earnings Per Share Data) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Class of Stock [Line Items] |  |  |  |
Net income available to Duke Energy common stockholders | $ 893 | $ 751 | $ 1,711 | $ 1,704
Accumulated preferred stock dividends adjustment | (12) | (12) |  |
Less: Impact of participating securities | 0 | 1 | 1 | 1
Income from continuing operations available to Duke Energy common stockholders | $ 881 | $ 738 | $ 1,710 | $ 1,703
Weighted average common shares outstanding – basic (in shares) | 770 | 769 | 770 | 769
Weighted average common shares outstanding – diluted (in shares) | 770 | 769 | 770 | 769
EPS available to Duke Energy common stockholders |  |  |  |
Basic (in usd per share) | $ 1.14 | $ 0.96 | $ 2.22 | $ 2.21
Diluted (in usd per share) | $ 1.14 | $ 0.96 | $ 2.22 | $ 2.21
Potentially dilutive items excluded from the calculation (in shares) | 2 | 2 | 2 | 2
Common Stock |  |  |  |
EPS available to Duke Energy common stockholders |  |  |  |
Dividends declared per common share (in usd per share) | $ 0.985 | $ 0.965 | $ 1.970 | $ 1.930
Preferred stock, Series A |  |  |  |
EPS available to Duke Energy common stockholders |  |  |  |
Dividends declared on preferred stock per depositary share (in usd per share) | 0.359 | $ 0.359 | $ 0.719 | 0.719
Cumulative dividend rate per annum |  |  | 5.75% |
Liquidation preference per share (in usd per share) | 25 |  | $ 25 |
Preferred stock, Series B |  |  |  |
EPS available to Duke Energy common stockholders |  |  |  |
Dividends declared on preferred stock per depositary share (in usd per share) |  |  | $ 24.375 | $ 24.375
Cumulative dividend rate per annum |  |  | 4.875% |
Liquidation preference per share (in usd per share) | $ 1,000 |  | $ 1,000 |

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