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Financial Risk Management Activities (Schedule Of Net Notional Volume For Open Derivative Contracts) (Detail) $ / mwh in Millions, $ / Derivative in Millions, $ / DTH in Millions | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2020 $ / Derivative $ / mwh $ / DTH | Dec. 31, 2019 $ / mwh $ / Derivative $ / DTH
Natural Gas Dth [Member] |  |
Derivative [Line Items] |  |
Net notional volume of derivative transactions | $ / DTH | 266 | 341
Electricity MWh [Member] |  |
Derivative [Line Items] |  |
Net notional volume of derivative transactions | (58) | (62)
FTRs MWh [Member] |  |
Derivative [Line Items] |  |
Net notional volume of derivative transactions | 26 | 13
Interest Rate Swaps [Member] |  |
Derivative [Line Items] |  |
Net notional volume of derivative transactions | $ / Derivative | 700 | 700
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 [Member] | Interest Rate Swaps [Member] |  |
Derivative [Line Items] |  |
Net notional volume of derivative transactions | $ / Derivative | 700 | 700
PSEG Power [Member] | Natural Gas Dth [Member] |  |
Derivative [Line Items] |  |
Net notional volume of derivative transactions | $ / DTH | 266 | 341
PSEG Power [Member] | Electricity MWh [Member] |  |
Derivative [Line Items] |  |
Net notional volume of derivative transactions | (58) | (62)
PSEG Power [Member] | FTRs MWh [Member] |  |
Derivative [Line Items] |  |
Net notional volume of derivative transactions | 26 | 13
PSEG Power [Member] | Interest Rate Swaps [Member] |  |
Derivative [Line Items] |  |
Net notional volume of derivative transactions | $ / Derivative | 0 | 0
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
Public Service Electric and Gas Company [Member] | Interest Rate Swaps [Member] |  |
Derivative [Line Items] |  |
Net notional volume of derivative transactions | $ / Derivative | 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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- Details
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