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Commitments and Contingencies (Environmental Matter and Other) (Details) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 USD ($) | Dec. 31, 2019 customers | Dec. 31, 2021 USD ($)
Environmental Matters - Superfund And Other Remediation (Numeric) [Abstract] |  |  |
Period RIE Environmental Remediation Costs To Be Incurred Over | 30 years |  |
Period Over Which Distribution Adjustment Charge-related Costs Are amortized | 10 years |  |
Number of customers impacted by Aquidneck Island loss of gas supply | customers |  | 7,500 |
Electric Rates [Member] |  |  |
Environmental Matters - Superfund And Other Remediation (Numeric) [Abstract] |  |  |
Environmental Costs Recognized, Recovery Credited to Expense | $ 3 |  |
Gas Rates [Member] |  |  |
Environmental Matters - Superfund And Other Remediation (Numeric) [Abstract] |  |  |
Environmental Costs Recognized, Recovery Credited to Expense | 1 |  |
RIE Environmental Remediation |  |  |
Environmental Matters - Superfund And Other Remediation (Numeric) [Abstract] |  |  |
Accrual for Environmental Loss Contingencies, Gross | 100 |  |
PPL Electric [Member] | PPL Electric Additional Sites [Member] |  |  |
Environmental Matters - Superfund And Other Remediation (Numeric) [Abstract] |  |  |
Environmental site accrual | 11 |  | $ 10
PPL Electric Utilities Corp [Member] | PPL Electric Additional Sites [Member] |  |  |
Environmental Matters - Superfund And Other Remediation (Numeric) [Abstract] |  |  |
Environmental site accrual | $ 11 |  | $ 10

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