REGULATORY ENVIRONMENT - PGL AND NSG UEA RIDER (Details) - Illinois Commerce Commission (ICC) - Uncollectible Expense Adjustment Rider Reconciliation $ in Millions |
1 Months Ended | |
|---|---|---|
|
May 31, 2023
USD ($)
|
Jun. 30, 2024
USD ($)
Assurance
|
|
| Public Utilities, General Disclosures [Line Items] | ||
| Amount of assurance that PGL's QIP rider costs will be recoverable | Assurance | 0 | |
| Minimum annual costs included in UEA rider during open reconciliation years | $ 10.0 | |
| Maximum annual costs included in UEA rider during open reconciliation years | $ 40.0 | |
| PGL | ||
| Public Utilities, General Disclosures [Line Items] | ||
| Refunds required to customers | $ 15.4 | |
| Refund period | 9 months | |
| NSG | ||
| Public Utilities, General Disclosures [Line Items] | ||
| Refunds required to customers | $ 0.7 | |
| Refund period | 9 months |