Utility Rate Regulation - Other (Details) - Unaffiliated Third Party Entity [Member] - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| PPL Electric [Member] | ||||
| Purchases Of Accounts Receivable [Line Items] | ||||
| Accounts Receivable, Purchase | $ 345 | $ 348 | $ 811 | $ 767 |
| Rhode Island Energy | ||||
| Purchases Of Accounts Receivable [Line Items] | ||||
| Accounts Receivable, Purchase | 68 | 44 | 155 | 95 |
| PPL Electric Utilities Corp [Member] | ||||
| Purchases Of Accounts Receivable [Line Items] | ||||
| Accounts Receivable, Purchase | $ 345 | $ 348 | $ 811 | $ 767 |