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Trust Investments (Amount Of Available-For-Sale Debt Securities By Maturity Periods) (Detail) $ in Millions | Mar. 31, 2021 USD ($)
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Rabbi Trust [Member] |
Schedule of Trust Investments [Line Items] |
Total Available-for-Sale Debt Securities | $ 210
PSEG Power [Member] | Nuclear Decommissioning Trust (NDT) Fund [Member] |
Schedule of Trust Investments [Line Items] |
Total Available-for-Sale Debt Securities | 1,237
Debt Securities [Member] | Rabbi Trust [Member] |
Schedule of Trust Investments [Line Items] |
Less than one year | 0
1 - 5 years | 42
6 - 10 years | 25
11 - 15 years | 10
16 - 20 years | 27
Over 20 years | 106
Debt Securities [Member] | PSEG Power [Member] | Nuclear Decommissioning Trust (NDT) Fund [Member] |
Schedule of Trust Investments [Line Items] |
Less than one year | 18
1 - 5 years | 329
6 - 10 years | 238
11 - 15 years | 79
16 - 20 years | 92
Over 20 years | $ 481

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