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Early Plant Retirements/Asset Dispositions Early Plant Retirements/Asset Dispositions (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2020 | Dec. 31, 2019
Early Plant Retirements/Asset Dispositions [Line Items] |  |  |
Assets Held-for-sale |  | $ 29,000,000 | $ 30,000,000
PSEG Power [Member] |  |  |
Early Plant Retirements/Asset Dispositions [Line Items] |  |  |
ZEC Charge per kwh |  | 0.004 |
ZEC Charge per MWh |  | 10 |
Assets Held-for-sale |  | $ 29,000,000 | $ 28,000,000
Approximate Loss on Disposition | $ 400,000,000 |  |

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