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Commitments and Contingencies (Tables) | 3 Months Ended
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Mar. 31, 2022
Commitments and Contingencies Disclosure [Abstract] |
Schedule of Reserves | The following table contains information regarding reserves for probable and estimable costs related to the various environmental sites. These reserves are recorded in Other within Other Noncurrent Liabilities on the Condensed Consolidated Balance Sheets.
(in millions) | March 31, 2022 |  | December 31, 2021 |
Reserves for Environmental Remediation |  |  |  |
Duke Energy | $ | 87 |  |  | $ | 88 |  |
Duke Energy Carolinas | 19 |  |  | 19 |  |
Progress Energy | 23 |  |  | 23 |  |
Duke Energy Progress | 11 |  |  | 11 |  |
Duke Energy Florida | 11 |  |  | 11 |  |
Duke Energy Ohio | 33 |  |  | 34 |  |
Duke Energy Indiana | 4 |  |  | 4 |  |
Piedmont | 8 |  |  | 9 |  |

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