Regulatory Matters (Regulatory Matters Narrative - Duke Energy Florida) (Details) - USD ($) $ in Millions |
1 Months Ended | 3 Months Ended | |||||
|---|---|---|---|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2026 |
Feb. 27, 2026 |
Dec. 31, 2025 |
Dec. 31, 2024 |
Aug. 01, 2024 |
Jul. 31, 2024 |
|
| Public Utilities, General Disclosures [Line Items] | |||||||
| Regulatory assets | $ 15,059 | $ 15,059 | $ 14,379 | ||||
| Duke Energy Florida | |||||||
| Public Utilities, General Disclosures [Line Items] | |||||||
| Regulatory assets | 2,130 | 2,130 | $ 2,106 | ||||
| Duke Energy Florida | Natural Disasters and Other Casualty Events | |||||||
| Public Utilities, General Disclosures [Line Items] | |||||||
| Capital expenditures | $ 75 | ||||||
| Refund requested | $ 91 | ||||||
| Hurricane Ian | FPSC | Duke Energy Florida | Hurricanes Helene, Debby and Milton | |||||||
| Public Utilities, General Disclosures [Line Items] | |||||||
| Storm reserves | $ 903 | $ 1,100 | $ 132 | $ 63 |