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Financial Risk Management Activities (Narrative) (Detail) $ / Derivative in Millions, $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2022 $ / Derivative | Dec. 31, 2022 USD ($) $ / Derivative | Dec. 31, 2021 USD ($) $ / Derivative | Dec. 31, 2020 USD ($)
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative, Fair Value, Net |  | $ (124) | $ 66 |
Credit Risk Derivative Liabilities, at Fair Value |  | 190 | 75 |
Aggregate fair value of derivative contracts in a liability position that contains triggers for additional collateral |  | 41 | 29 |
Additional collateral aggregate fair value |  | 149 | 46 |
Loss on physical load sales |  | 38 |  |
Proceeds from Short-term Debt |  | 2,000 | 2,500 | $ 800
Long-term Debt |  | 18,186 |  |
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax |  | (3) | (6) |
PSEG [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Long-term Debt |  | 4,146 | 4,146 |
PSEG Power LLC [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative, Fair Value, Net |  | (125) |  |
Long-term Debt |  | 1,250 | 0 |
Senior Notes Three Point Eight Five Percent due Two Thousand Twenty Three [Member] | PSEG Power LLC [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Long-term Debt |  | 1,250 | 0 |
Senior Notes Five Point Eight Five Percent Due In Two Thousand Twenty Seven | PSEG [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Long-term Debt |  | 700 | $ 0 |
May 2022 Term Loan |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Proceeds from Short-term Debt |  | 500 |  |
Short-Term Bank Loans and Notes Payable |  | $ 500 |  |
Interest Rate Swaps [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Underlying, Derivative | $ / Derivative |  | 1,050 | 0 |
Treasury Lock |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Underlying, Derivative | $ / Derivative | 350 |  |  |

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- Definition The aggregate fair value of additional assets that would be required to be posted as collateral for derivative instruments with credit-risk-related contingent features if the credit-risk-related contingent features were triggered at the end of the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5624258-113959 + Details
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