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v3.19.3.a.u2

Debt and Credit Facilities (Long-Term Debt Financing Transactions) (Details) - USD ($) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Debt Instrument [Line Items] |  |  |  |  |
Commercial Paper |  |  | $ 1,115 | $ 1,016 |
Issuance of Long-Term Debt |  |  | 1,900 | 2,750 | $ 2,175
Long-term Debt |  |  | 15,208 |  |
PSEG [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term Debt |  |  | 2,450 | 2,450 |
PSEG [Member] | Senior Notes Two Point Eight Seven Five Percent due Two Thousand Twenty Four [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Issuance of Long-Term Debt |  |  | 750 |  |
Debt Instrument, Face Amount |  |  | $ 750 |  |
Stated interest rate of debt instrument |  |  | 2.875% |  |
PSEG [Member] | Term Loan maturing in 2020 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term Debt |  |  | $ 700 | 700 |
PSEG [Member] | Term Loan maturing in 2019 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term Debt |  |  | 0 | 350 |
Repayments of Long-term Debt |  |  | 350 |  |
PSEG [Member] | Senior Notes One Point Six Zero Percent Due In Two Thousand Nineteen [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term Debt |  |  | $ 0 | 400 |
Stated interest rate of debt instrument |  |  | 1.60% |  |
Repayments of Long-term Debt |  |  | $ 400 |  |
Public Service Electric and Gas Company |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Commercial Paper |  |  | 362 | 272 |
Issuance of Long-Term Debt |  |  | 1,150 | 1,350 | 775
Long-term Debt |  |  | 9,908 | 9,258 |
Public Service Electric and Gas Company | Medium Term Notes Three Point Seven Zero Percent due Two Thousand Twenty Eight [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term Debt | [1] |  | $ 375 | 375 |
Stated interest rate of debt instrument |  |  | 3.70% |  |
Public Service Electric and Gas Company | Medium Term Notes Four Point Zero Five Percent due Two Thousand Forty Eight [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term Debt | [1] |  | $ 325 | 325 |
Stated interest rate of debt instrument |  |  | 4.05% |  |
Public Service Electric and Gas Company | Medium Term Notes Three Point Two Five Percent due Two Thousand Twenty Three [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt Instrument, Face Amount | [1] |  | $ 325 | 325 |
Stated interest rate of debt instrument |  |  | 3.25% |  |
Public Service Electric and Gas Company | Medium Term Notes Three Point Six Five Percent due Two Thousand Twenty Eight [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term Debt | [1] |  | $ 325 | 325 |
Stated interest rate of debt instrument |  |  | 3.65% |  |
Public Service Electric and Gas Company | Medium Term Notes Three Point Two Zero Percent due Two Thousand Forty NIne [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Issuance of Long-Term Debt |  |  | $ 400 |  |
Long-term Debt | [1] |  | $ 400 | 0 |
Stated interest rate of debt instrument |  |  | 3.20% |  |
Public Service Electric and Gas Company | Medium Term Notes Three Point Two Zero Percent due Two Thousand Twenty NIne [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Issuance of Long-Term Debt |  |  | $ 375 |  |
Long-term Debt | [1] |  | $ 375 | 0 |
Stated interest rate of debt instrument |  |  | 3.20% |  |
Public Service Electric and Gas Company | Medium Term Notes Three Point Eight Five Percent due Two Thousand Forty Nine [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Issuance of Long-Term Debt |  |  | $ 375 |  |
Long-term Debt | [1] |  | $ 375 | 0 |
Stated interest rate of debt instrument |  |  | 3.85% |  |
Public Service Electric and Gas Company | Medium Term Notes One Point Eight Percent Due In Two Thousand Nineteen [Member] [Domain] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term Debt | [1] |  | $ 0 | 250 |
Stated interest rate of debt instrument |  |  | 1.80% |  |
Repayments of Long-term Debt |  |  | $ 250 |  |
Public Service Electric and Gas Company | Medium Term Notes Two Point Zero Percent due Two Thousand Nineteen [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Stated interest rate of debt instrument |  |  | 2.00% |  |
Repayments of Long-term Debt |  |  | $ 250 |  |
Public Service Electric and Gas Company | Medium Term Notes Two Point Four Five Percent due Two Thousand Thirty [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Stated interest rate of debt instrument |  |  | 2.45% |  |
Public Service Electric and Gas Company | Medium Term Notes Three Point One Five Percent due Two Thousand Fifty [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Stated interest rate of debt instrument |  |  | 3.15% |  |
PSEG Power LLC |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Issuance of Long-Term Debt |  |  | $ 0 | 700 | $ 0
Long-term Debt |  |  | 2,850 | 2,850 |
PSEG Power LLC | Senior Notes Three Point Eight Five Percent due Two Thousand Twenty Three [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term Debt |  |  | $ 700 | $ 700 |
Stated interest rate of debt instrument |  |  | 3.85% |  |
PSEG Power LLC | Pollution Control Notes Floating Rate Due On Two Thousand Twenty Two [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term Debt |  |  | $ 44 |  |
Subsequent Event [Member] | Public Service Electric and Gas Company | Medium Term Notes Two Point Four Five Percent due Two Thousand Thirty [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Issuance of Long-Term Debt |  | $ 300 |  |  |
Subsequent Event [Member] | Public Service Electric and Gas Company | Medium Term Notes Three Point One Five Percent due Two Thousand Fifty [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Issuance of Long-Term Debt |  | $ 300 |  |  |
[1] | Secured by essentially all property of PSE&G pursuant to its First and Refunding Mortgage.

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