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Debt and Credit Facilities (Short-Term Liquidity) (Details) - USD ($) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Aug. 31, 2023 | May 31, 2023 | Apr. 30, 2023 | Jan. 31, 2023 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | [1] |  |  |  |  | $ 4,025 |  |
Line of Credit Facility, Amount Outstanding | [1],[2] |  |  |  |  | 660 |  |
Available Liquidity | [1] |  |  |  |  | 3,365 |  |
Commercial Paper and Loans |  |  |  |  |  | 949 | $ 2,200 |
Proceeds from Short-term Debt |  |  |  |  |  | 750 | 2,000 | $ 2,500
Repayments of Short-term Debt |  |  |  |  |  | 2,250 | 2,500 | 300
Issuance of Long-Term Debt |  |  |  |  |  | 2,800 | 2,850 | 2,825
Collateral Already Posted, Aggregate Fair Value |  |  |  |  |  | $ 113 | 1,521 |
Maximum [Member] |  |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Commitments of single institution as percentage of total commitments |  |  |  |  |  | 10.00% |  |
PSEG [Member] |  |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  | $ 1,500 |  |
Line of Credit Facility, Amount Outstanding | [2] |  |  |  |  | 27 |  |
Available Liquidity |  |  |  |  |  | 1,473 |  |
Public Service Electric and Gas Company |  |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  | 1,000 |  |
Line of Credit Facility, Amount Outstanding | [2] |  |  |  |  | 445 |  |
Available Liquidity |  |  |  |  |  | 555 |  |
Commercial Paper and Loans |  |  |  |  |  | 425 | 0 |
Issuance of Long-Term Debt |  |  |  |  |  | 1,800 | $ 900 | $ 1,325
PSEG Power LLC [Member] |  |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  | 1,525 |  |
Line of Credit Facility, Amount Outstanding | [2] |  |  |  |  | 188 |  |
Available Liquidity |  |  |  |  |  | 1,337 |  |
Revolving Credit Facility [Member] | PSEG [Member] |  |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Commercial Paper and Loans |  |  |  |  |  | $ 25 |  |
Short-term Debt, Weighted Average Interest Rate, at Point in Time |  |  |  |  |  | 5.60% |  |
Revolving Credit Facility [Member] | Public Service Electric and Gas Company |  |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Commercial Paper and Loans |  |  |  |  |  | $ 425 |  |
Short-term Debt, Weighted Average Interest Rate, at Point in Time |  |  |  |  |  | 5.57% |  |
April 2022 Term Loan |  |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Proceeds from Short-term Debt |  |  |  |  |  | $ 1,500 |  |
Repayments of Short-term Debt |  |  |  | $ 750 | $ 750 |  |  |
April 2023 Term Loan |  |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Proceeds from Short-term Debt |  |  |  | $ 750 |  |  |  |
Repayments of Short-term Debt |  | $ 250 |  |  |  |  |  |
May 2023 Term Loan |  |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Proceeds from Short-term Debt |  |  | $ 500 |  |  |  |  |
Revolving Credit Facility [Member] | PSEG [Member] |  |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | [3] |  |  |  |  | 1,500 |  |
Line of Credit Facility, Amount Outstanding | [2],[3] |  |  |  |  | 27 |  |
Available Liquidity | [3] |  |  |  |  | $ 1,473 |  |
Expiration Date |  |  |  |  |  | Mar 2027 |  |
Revolving Credit Facility [Member] | Public Service Electric and Gas Company |  |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | [3] |  |  |  |  | $ 1,000 |  |
Line of Credit Facility, Amount Outstanding | [2],[3] |  |  |  |  | 445 |  |
Available Liquidity | [3] |  |  |  |  | $ 555 |  |
Expiration Date |  |  |  |  |  | Mar 2027 |  |
Revolving Credit Facility [Member] | PSEG Power LLC [Member] |  |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | [3] |  |  |  |  | $ 1,250 |  |
Line of Credit Facility, Amount Outstanding | [2],[3] |  |  |  |  | 39 |  |
Available Liquidity | [3] |  |  |  |  | $ 1,211 |  |
Expiration Date |  |  |  |  |  | Mar 2027 |  |
Letter of Credit Facilities expiring September 2024 | PSEG Power LLC [Member] |  |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  | $ 200 |  |
Line of Credit Facility, Amount Outstanding | [2] |  |  |  |  | 83 |  |
Available Liquidity |  |  |  |  |  | $ 117 |  |
Expiration Date |  |  |  |  |  | Sept 2024 |  |
Uncommitted Letter of Credit Facility | PSEG Power LLC [Member] |  |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  | $ 100 |  |
Subsidiary Uncommitted Letter of Credit Facility | PSEG Power LLC [Member] |  |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  | 150 |  |
Letter of Credit Facilities expiring April 2026 | PSEG Power LLC [Member] |  |  |  |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  | 75 |  |
Line of Credit Facility, Amount Outstanding | [2] |  |  |  |  | 66 |  |
Available Liquidity |  |  |  |  |  | $ 9 |  |
Expiration Date |  |  |  |  |  | Apr 2026 |  |
[1] | Amounts do not include uncommitted credit facilities.
[2] | The primary use of PSEG’s and PSE&G’s credit facilities is to support their respective Commercial Paper Programs, under which as of December 31, 2023, PSEG had $25 million outstanding at a weighted average interest rate of 5.60%. PSE&G had $425 million Commercial Paper outstanding at a weighted average interest rate of 5.57%.
[3] | Master Credit Facility with sub-limits of $1.5 billion for PSEG and $1.25 billion for PSEG Power; sub-limits can be adjusted pursuant to the terms of the Master Credit Facility agreement. The PSEG sub-limit includes a sustainability linked pricing based mechanism with potential increases or decreases, which are not expected to be material, depending on performance relative to targeted methane emission reductions.

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