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Debt and Credit Facilities (Short-Term Liquidity) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Jun. 30, 2022
Short-term Debt [Line Items] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | [1] | $ 4,150 |  |  |
Line of Credit Facility, Amount Outstanding | [1],[2] | 461 |  |  |
Available Liquidity | [1] | 3,689 |  |  |
Commercial Paper and Loans |  | $ 2,200 | $ 3,519 |  |
Commitments of single institution as percentage of total commitments |  | 10.00% |  |  |
Proceeds from Short-term Debt |  | $ 2,000 | 2,500 | $ 800 |
Repayments of Short-term Debt |  | 2,500 | 300 | 500 |
Issuance of Long-Term Debt |  | 2,850 | 2,825 | 2,450 |
Collateral Already Posted, Aggregate Fair Value |  | 1,521 | 844 |  | $ 343
PSEG [Member] |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | 1,500 |  |  |
Line of Credit Facility, Amount Outstanding | [2] | 202 |  |  |
Available Liquidity |  | 1,298 |  |  |
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] | 18 |  |  |
Available Liquidity |  | 982 |  |  |
Issuance of Long-Term Debt |  | 900 | 1,325 | $ 1,350 |
PSEG Power LLC [Member] |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | 1,650 |  |  |
Line of Credit Facility, Amount Outstanding | [2] | 241 |  |  |
Available Liquidity |  | 1,409 |  |  |
Revolving Credit Facility [Member] | PSEG [Member] |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Commercial Paper and Loans |  | $ 200 |  |  |
Short-term Debt, Weighted Average Interest Rate, at Point in Time |  | 4.40% |  |  |
Power credit facility |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Proceeds from Short-term Debt |  | $ 700 |  |  |
Repayments of Short-term Debt |  | 1,250 |  |  |
March 2021 Term Loan |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Proceeds from Short-term Debt |  |  | 500 |  |
Repayments of Short-term Debt |  | 500 |  |  |
May 2021 Term Loan |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Proceeds from Short-term Debt |  |  | 750 |  |
Repayments of Short-term Debt |  | 750 |  |  |
August 2021 Term Loan |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Repayments of Short-term Debt |  | 1,250 |  |  |
April 2022 Term Loan |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Proceeds from Short-term Debt |  | 1,500 |  |  |
Repayments of Short-term Debt |  | 750 |  |  |
May 2022 Term Loan |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Proceeds from Short-term Debt |  | 500 |  |  |
Revolving Credit Facility [Member] | PSEG [Member] |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Credit Facility Reduction |  | 1,500 |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | [3] | 1,500 |  |  |
Line of Credit Facility, Amount Outstanding | [2],[3] | 202 |  |  |
Available Liquidity | [3] | $ 1,298 |  |  |
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] | 18 |  |  |
Available Liquidity | [3] | $ 982 |  |  |
Expiration Date |  | Mar 2027 |  |  |
Revolving Credit Facility [Member] | PSEG Power LLC [Member] |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | $ 1,250 |  |  |
Expiration Date |  | Mar 2027 |  |  |
Revolving Credit Facility [Member] | Parent and PSEG Power |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | $ 2,750 | $ 3,400 |  |
Letter of Credit Facilities expiring September 2022 | 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] | 63 |  |  |
Available Liquidity | [3] | 1,187 |  |  |
Letter of Credit Facilities expiring September 2024 | PSEG Power LLC [Member] |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | 200 |  |  |
Letter of Credit Facilities expiring September 2023 | PSEG Power LLC [Member] |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Line of Credit Facility, Amount Outstanding | [2] | 120 |  |  |
Available Liquidity |  | $ 80 |  |  |
Expiration Date |  | Sept 2024 |  |  |
Letter of Credit Facilities expiring April 2024 | PSEG Power LLC [Member] |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | $ 100 |  |  |
Line of Credit Facility, Amount Outstanding | [2] | 32 |  |  |
Available Liquidity |  | $ 68 |  |  |
Expiration Date |  | Apr 2024 |  |  |
Letter of Credit Facilities expiring April 2025 | PSEG Power LLC [Member] |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | $ 100 |  |  |
Line of Credit Facility, Amount Outstanding | [2] | 26 |  |  |
Available Liquidity |  | $ 74 |  |  |
Expiration Date |  | Apr 2025 |  |  |
Uncommitted Letter of Credit Facility | PSEG Power LLC [Member] |  |  |  |  |
Short-term Debt [Line Items] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | $ 200 |  |  |
[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, 2022, PSEG had $200 million outstanding at a weighted average interest rate of 4.4%. PSE&G had no Commercial Paper outstanding as of December 31, 2022.
[3] | Master Credit Facility with sub-limits of $1.5 billion for PSEG and $1.25 billion for PSEG Power.

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