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Variable Interest Entities (Schedule of Consolidated VIEs) (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Variable Interest Entities [Line Items] |  |
Regulatory Assets: Current | $ 1,977 | $ 2,739
Current Assets: Other | 984 | 695
Other Noncurrent Assets: Regulatory assets | 14,077 | 14,220
Other Noncurrent Assets: Other | 3,885 | 3,507
Current Liabilities: Other | 2,044 | 2,080
Current maturities of long-term debt | 6,452 | 4,349
Long-Term Debt | 79,301 | 76,340
Inventory | 4,494 | 4,496
Accounts payable | 4,191 | 5,436
Duke Energy Carolinas |  |
Variable Interest Entities [Line Items] |  |
Regulatory Assets: Current | 662 | 685
Current Assets: Other | 433 | 52
Other Noncurrent Assets: Regulatory assets | 4,239 | 4,199
Other Noncurrent Assets: Other | 1,221 | 1,127
Current Liabilities: Other | 546 | 541
Current maturities of long-term debt | 26 | 521
Inventory | 1,545 | 1,536
Duke Energy Progress |  |
Variable Interest Entities [Line Items] |  |
Regulatory Assets: Current | 663 | 626
Current Assets: Other | 208 | 104
Other Noncurrent Assets: Regulatory assets | 4,412 | 4,555
Other Noncurrent Assets: Other | 778 | 724
Current Liabilities: Other | 326 | 427
Current maturities of long-term debt | 85 | 983
Inventory | 1,380 | 1,341
Duke Energy Florida |  |
Variable Interest Entities [Line Items] |  |
Regulatory Assets: Current | 211 | 1,022
Current Assets: Other | 57 | 227
Other Noncurrent Assets: Regulatory assets | 2,113 | 2,064
Other Noncurrent Assets: Other | 510 | 465
Current Liabilities: Other | 366 | 342
Current maturities of long-term debt | 787 | 534
Long-Term Debt | 9,755 | 9,814
Inventory | 771 | 745
DEFPF | Duke Energy Florida | VIE primary beneficiary |  |
Variable Interest Entities [Line Items] |  |
Regulatory Assets: Current | 62 | 61
Current Assets: Other | 12 | 35
Other Noncurrent Assets: Regulatory assets | 696 | 741
Other Noncurrent Assets: Other | 7 | 0
Current Liabilities: Other | 2 | 8
Current maturities of long-term debt | 61 | 59
Long-Term Debt | 712 | 773
DECNCSF | Duke Energy Carolinas | VIE primary beneficiary |  |
Variable Interest Entities [Line Items] |  |
Regulatory Assets: Current | 12 | 12
Current Assets: Other | 5 | 9
Other Noncurrent Assets: Regulatory assets | 181 | 189
Other Noncurrent Assets: Other | 1 | 1
Current Liabilities: Other |  | 2
Current maturities of long-term debt | 11 | 10
Long-Term Debt | 188 | 198
DECNCSFII | Duke Energy Carolinas | VIE primary beneficiary |  |
Variable Interest Entities [Line Items] |  |
Regulatory Assets: Current | 29 |
Current Assets: Other | 0 |
Other Noncurrent Assets: Regulatory assets | 548 |
Other Noncurrent Assets: Other | 3 |
Current maturities of long-term debt | 2 |
Long-Term Debt | 577 |
DEPNCSF | Duke Energy Progress | VIE primary beneficiary |  |
Variable Interest Entities [Line Items] |  |
Regulatory Assets: Current | 39 | 39
Current Assets: Other | 18 | 27
Other Noncurrent Assets: Regulatory assets | 590 | 620
Other Noncurrent Assets: Other | 4 | 4
Current Liabilities: Other |  | 10
Current maturities of long-term debt | 35 | 34
Long-Term Debt | 611 | 646
DEPNCSFII | Duke Energy Progress | VIE primary beneficiary |  |
Variable Interest Entities [Line Items] |  |
Regulatory Assets: Current | 23 |
Current Assets: Other | 0 |
Other Noncurrent Assets: Regulatory assets | 433 |
Other Noncurrent Assets: Other | 2 |
Current maturities of long-term debt | 1 |
Long-Term Debt | 457 |
DEPSCSF | Duke Energy Progress | VIE primary beneficiary |  |
Variable Interest Entities [Line Items] |  |
Regulatory Assets: Current | 8 | 8
Current Assets: Other | 2 | 13
Other Noncurrent Assets: Regulatory assets | 153 | 155
Other Noncurrent Assets: Other | 1 | 1
Current Liabilities: Other |  | 7
Current maturities of long-term debt | 5 | 9
Long-Term Debt | 158 | 163
DEF ProCo | Duke Energy Florida | VIE primary beneficiary |  |
Variable Interest Entities [Line Items] |  |
Inventory | 550 | 494
Accounts payable | $ 266 | $ 208

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