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Debt and Credit Facilities (Long-Term Debt Maturities) (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Debt Instrument [Line Items] |  |
Repayments in Next Twelve Months | $ 1,500 |
Repayments in Year Two | 2,150 |
Repayments in Year Three | 875 |
Repayments in Year Four | 1,125 |
Repayments in Year Five | 1,300 |
Thereafter | 12,461 |
Long-term Debt | 19,411 |
Public Service Electric and Gas Company |  |
Debt Instrument [Line Items] |  |
Long-term Debt | 13,765 | $ 12,790
PSEG Power LLC [Member] |  |
Debt Instrument [Line Items] |  |
Long-term Debt | 1,250 | 1,250
PSEG [Member] |  |
Debt Instrument [Line Items] |  |
Repayments in Next Twelve Months | 750 |
Repayments in Year Two | 550 |
Repayments in Year Three | 0 |
Repayments in Year Four | 700 |
Repayments in Year Five | 600 |
Thereafter | 1,796 |
Long-term Debt | 4,396 | $ 4,146
Public Service Electric and Gas Company |  |
Debt Instrument [Line Items] |  |
Repayments in Next Twelve Months | 750 |
Repayments in Year Two | 350 |
Repayments in Year Three | 875 |
Repayments in Year Four | 425 |
Repayments in Year Five | 700 |
Thereafter | 10,665 |
Long-term Debt | 13,765 |
PSEG Power LLC [Member] |  |
Debt Instrument [Line Items] |  |
Repayments in Next Twelve Months | 0 |
Repayments in Year Two | 1,250 |
Repayments in Year Three | 0 |
Repayments in Year Four | 0 |
Repayments in Year Five | 0 |
Thereafter | 0 |
Long-term Debt | $ 1,250 |

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