Rate Matters and Regulation - Additional Information (Details) $ in Millions |
Jun. 30, 2026
USD ($)
|
|---|---|
| Rate Matters and Regulation [Line Items] | |
| Estimated Refund to SPP | $ 14 |
| Impact to Company [Member] | |
| Rate Matters and Regulation [Line Items] | |
| Estimated Refund to SPP | 4 |
| Customer Impact [Member] | |
| Rate Matters and Regulation [Line Items] | |
| Estimated Refund to SPP | $ 10 |