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Schedule Of Consolidated Debt (Long-Term Debt Financing Transactions) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016
Debt Instrument [Line Items] |  |  |
Long-term Debt |  | $ 13,158 |
PSEG [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term Debt |  | 2,100 | $ 1,200
PSEG [Member] | Senior Notes One Point Six Zero Percent Due In Two Thousand Nineteen [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term Debt |  | 700 | 0
PSEG [Member] | Senior Notes Two Point Six Five Percent Due In Two Thousand Twenty Two [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term Debt |  | 700 | 0
Debt Instrument, Face Amount |  | $ 700 |
Stated interest rate of debt instrument |  | 2.65% |
PSEG [Member] | Term Loan maturing in 2017 [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term Debt |  | $ 0 | 500
Repayments of Long-term Debt |  | 500 |
PSE&G [Member] | Medium Term Notes Three Point Zero Percent due Two Thousand Twenty Seven [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term Debt | [1] | 425 | 0
Debt Instrument, Face Amount |  | $ 425 |
Stated interest rate of debt instrument |  | 3.00% |
PSE&G [Member] | Medium Term Notes Three Point Six Zero Percent due Two Thousand Forty Seven [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term Debt | [1] | $ 350 | 0
Debt Instrument, Face Amount |  | $ 350 |
Stated interest rate of debt instrument |  | 3.60% |
PSE&G [Member] | Medium Term Notes Three Point Zero Percent Due In Two Thousand Twenty Five [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term Debt | [2] | $ 350 | 350
Stated interest rate of debt instrument |  | 3.00% |
PSE&G [Member] | Medium Term Notes Four Point Zero Five Percent due Two Thousand Forty Five [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term Debt | [2] | $ 250 |
Stated interest rate of debt instrument |  | 4.05% |
PSE&G [Member] | Medium Term Notes Four Point One Five Percent Due In Two Thousand Forty Five [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term Debt | [2] | $ 250 | 250
Stated interest rate of debt instrument |  | 4.15% |
PSE&G [Member] | Medium Term Notes Two Point Two Five Percent due Two Thousand Twenty Six [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term Debt | [2] | $ 425 | 425
Stated interest rate of debt instrument |  | 2.25% |
Power [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term Debt |  | $ 2,400 | 2,400
Power [Member] | Senior Notes Three Point Zero Percent Due In Two Thousand Twenty One [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term Debt |  | $ 700 | $ 700
Stated interest rate of debt instrument |  | 3.00% |
[1] | The Pennsylvania Economic Development Authority (PEDFA) bond that is serviced and secured by Power Pollution Control Notes, is a variable rate bond that is in weekly reset mode.
[2] | Secured by essentially all property of PSE&G pursuant to its First and Refunding Mortgage.

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