Income Taxes (Effective Tax Rates) (Details) |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Income Tax Disclosure [Line Items] | ||
| Effective tax rate | 17.60% | 12.10% |
| Duke Energy Carolinas | ||
| Income Tax Disclosure [Line Items] | ||
| Effective tax rate | 2.50% | 9.00% |
| Progress Energy | ||
| Income Tax Disclosure [Line Items] | ||
| Effective tax rate | 14.10% | 16.80% |
| Duke Energy Progress | ||
| Income Tax Disclosure [Line Items] | ||
| Effective tax rate | 10.20% | 14.50% |
| Duke Energy Florida | ||
| Income Tax Disclosure [Line Items] | ||
| Effective tax rate | 19.70% | 19.90% |
| Duke Energy Ohio | ||
| Income Tax Disclosure [Line Items] | ||
| Effective tax rate | 19.30% | 18.00% |
| Duke Energy Indiana | ||
| Income Tax Disclosure [Line Items] | ||
| Effective tax rate | 14.00% | 12.50% |
| Piedmont | ||
| Income Tax Disclosure [Line Items] | ||
| Effective tax rate | 25.10% | 20.70% |