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Variable Interest Entities (Schedule of Accounts Receivable Securitizations) (Details) - USD ($) | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Variable Interest Entities [Line Items] |  |
Long-Term Debt | $ 63,147,000,000 | $ 60,448,000,000
Duke Energy Carolinas |  |
Variable Interest Entities [Line Items] |  |
Long-Term Debt | 12,844,000,000 | 12,595,000,000
Duke Energy Progress |  |
Variable Interest Entities [Line Items] |  |
Long-Term Debt | 10,446,000,000 | 9,543,000,000
Duke Energy Florida |  |
Variable Interest Entities [Line Items] |  |
Long-Term Debt | 8,120,000,000 | 8,406,000,000
CRC | VIE primary beneficiary |  |
Variable Interest Entities [Line Items] |  |
Facility size | 350,000,000 |
Long-Term Debt | 350,000,000 | 350,000,000
Accounts receivable from securitization | 776,000,000 | 587,000,000
DERF | Duke Energy Carolinas | VIE primary beneficiary |  |
Variable Interest Entities [Line Items] |  |
Facility size | 500,000,000 |
Long-Term Debt | 498,000,000 | 475,000,000
Accounts receivable from securitization | 893,000,000 | 844,000,000
DEPR | Duke Energy Progress | VIE primary beneficiary |  |
Variable Interest Entities [Line Items] |  |
Facility size | 400,000,000 |
Long-Term Debt | 400,000,000 | 350,000,000
Accounts receivable from securitization | 705,000,000 | 574,000,000
DEFR | Duke Energy Florida | VIE primary beneficiary |  |
Variable Interest Entities [Line Items] |  |
Facility size | 250,000,000 |
Long-Term Debt | 250,000,000 | 250,000,000
Accounts receivable from securitization | $ 640,000,000 | $ 427,000,000

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