Other Commitments and Contingencies - Additional Information (Detail) $ in Millions |
3 Months Ended |
|---|---|
|
Mar. 31, 2026
USD ($)
| |
| Other Commitments [Line Items] | |
| Debt Service Coverage Ratio | 1.25 |
| Debt Service Coverage Ratio Measurement Period | 12 |
| Maximum Days To Make Default Good | 5 days |
| Ratios based on average of the prior quarters | 1 year 6 months |
| Number Of Years For Power Purchase Agreement | 20 years |
| Contract Duration | 20 years |
| Aggregate guaranteed amount | $ 81.0 |
| Guarantor Obligations, Current Carrying Value | 52.4 |
| Draws on letters of credit | 4.8 |
| Specific Purpose | |
| Other Commitments [Line Items] | |
| Guarantor Obligations, Current Carrying Value | $ 4.0 |
| Delmarva [Member] | |
| Other Commitments [Line Items] | |
| Number of Years for Asset Management Agreement | 3 years |