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v3.25.3

Subsequent Events (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Oct. 31, 2025 | Oct. 23, 2025 | May 31, 2025 | Dec. 31, 2025 | Sep. 30, 2025 | Oct. 20, 2025 | Oct. 01, 2025
Parent Company |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Gain from early extinguishment of debt |  |  |  |  | $ 36 |  |
Parent Company | Forecast |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Gain from early extinguishment of debt |  |  |  | $ 25 |  |  |
Houston Electric | Forecast |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Gain on extinguishment of debt to be deferred |  |  |  | $ 24 |  |  |
Subsequent Event | Vectren Energy Delivery of Ohio, LLC | CEOH |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Total consideration |  |  |  |  |  | $ 2,620 |
Cash consideration |  |  |  |  |  | 1,420 |
Consideration receivable |  |  |  |  |  | $ 1,200 |
Senior Notes |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Principal amount repurchased |  |  | $ 1,000 |  |  |  |
Senior Notes | Parent Company |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Amount of cancelled debt |  |  | $ 634 |  |  |  |
Senior Notes | Subsequent Event |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Principal amount repurchased |  | $ 504 |  |  |  |  |
Senior Notes | Subsequent Event | Parent Company |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Amount of cancelled debt |  | 329 |  |  |  |  |
Senior Notes | Subsequent Event | Houston Electric |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Amount of cancelled debt |  | $ 234 |  |  |  |  |
Junior Notes | Subsequent Event | CenterPoint Energy |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Subordinated debt |  |  |  |  |  |  | $ 700
Subordinated borrowing, interest rate | 5.95% |  |  |  |  |  |
Reset debt interest rate (in percent) |  |  |  |  |  |  | 2.223%
Proceeds from Issuance of Subordinated Long-Term Debt | $ 691 |  |  |  |  |  |
Series 2025C Bonds | 2025C Bonds | Subsequent Event | SIGECO |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Aggregate principal |  |  |  |  |  |  | $ 145
Senior Notes Due 2030 to 2049 | Senior Notes |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Cash tender offers |  |  |  |  | $ 300 |  |
Senior Notes Due 2030 to 2049 | Senior Notes | Minimum |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Annual interest rate (as a percent) |  |  |  |  | 2.65% |  |
Senior Notes Due 2030 to 2049 | Senior Notes | Maximum |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Annual interest rate (as a percent) |  |  |  |  | 3.70% |  |
Senior Notes Due 2044 to 2049 | Senior Notes |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Cash tender offers |  |  |  |  | $ 200 |  |
Senior Notes Due 2044 to 2049 | Senior Notes | Minimum |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Annual interest rate (as a percent) |  |  |  |  | 4.25% |  |
Senior Notes Due 2044 to 2049 | Senior Notes | Maximum |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Annual interest rate (as a percent) |  |  |  |  | 4.50% |  |

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