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Financial Risk Management Activities (Schedule Of Net Notional Volume For Open Derivative Contracts) (Detail) $ / mwh in Millions, $ / DTH in Millions | 6 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2021 $ / mwh $ / DTH | Sep. 30, 2020 $ / DTH $ / mwh
Natural Gas Dth [Member] |  |
Derivative [Line Items] |  |
Net notional volume of derivative transactions | $ / DTH | 232 | 321
Electricity MWh [Member] |  |
Derivative [Line Items] |  |
Net notional volume of derivative transactions | (70) | (66)
FTRs MWh [Member] |  |
Derivative [Line Items] |  |
Net notional volume of derivative transactions | 30 | 20
PSEG [Member] | Natural Gas Dth [Member] |  |
Derivative [Line Items] |  |
Net notional volume of derivative transactions | 0 | 0
PSEG [Member] | Electricity MWh [Member] |  |
Derivative [Line Items] |  |
Net notional volume of derivative transactions | 0 | 0
PSEG [Member] | FTRs MWh [Member] |  |
Derivative [Line Items] |  |
Net notional volume of derivative transactions | 0 | 0
PSEG Power [Member] | Natural Gas Dth [Member] |  |
Derivative [Line Items] |  |
Net notional volume of derivative transactions | $ / DTH | 232 | 321
PSEG Power [Member] | Electricity MWh [Member] |  |
Derivative [Line Items] |  |
Net notional volume of derivative transactions | (70) | (66)
PSEG Power [Member] | FTRs MWh [Member] |  |
Derivative [Line Items] |  |
Net notional volume of derivative transactions | 30 | 20
Public Service Electric and Gas Company [Member] | Natural Gas Dth [Member] |  |
Derivative [Line Items] |  |
Net notional volume of derivative transactions | $ / DTH | 0 | 0
Public Service Electric and Gas Company [Member] | Electricity MWh [Member] |  |
Derivative [Line Items] |  |
Net notional volume of derivative transactions | 0 | 0
Public Service Electric and Gas Company [Member] | FTRs MWh [Member] |  |
Derivative [Line Items] |  |
Net notional volume of derivative transactions | 0 | 0

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Specified interest rate, security price, commodity price, foreign exchange rate, index of prices or rates for a derivative contract but not the derivative contract itself. + References No definition available. + Details
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- Definition Specified interest rate, security price, commodity price, foreign exchange rate, index of prices or rates for a derivative contract measured in volume but not the derivative contract itself. + References No definition available. + Details
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