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Financial Risk Management Activities - Schedule of Derivative Instruments Fair Value in Balance Sheets (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |  |
Derivative Contracts, Current Assets |  | $ 33 | $ 112
Derivative Contracts, Noncurrent Assets |  | 51 | 29
Total Mark-to-Market Derivative Assets |  | 84 | 141
Derivative Contracts, Current Liabilities |  | (5) | (86)
Derivative Contracts, Noncurrent Liabilities |  | (4) | (6)
Total Mark-to-Market Derivative (Liabilities) |  | (9) | (92)
Net Mark-to-Market Derivative Assets (Liabilities) |  | 75 | 49
Derivative, Fair Value, Amount Offset Against Collateral, Net | [1] | 121 | 22
PSEG Power |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative Contracts, Current Assets |  | 33 | 106
Derivative Contracts, Noncurrent Assets |  | 19 | 29
Total Mark-to-Market Derivative Assets |  | 52 | 135
Derivative Contracts, Current Liabilities |  | (5) | (70)
Derivative Contracts, Noncurrent Liabilities |  | (4) | (5)
Total Mark-to-Market Derivative (Liabilities) |  | (9) | (75)
Net Mark-to-Market Derivative Assets (Liabilities) |  | 43 | 60
Other Noncurrent Liabilities |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Fair Value, Amount Offset Against Collateral, Net |  | 48 | 8
Other Current Assets |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Fair Value, Amount Offset Against Collateral, Net |  |  | (1)
Other Current Liabilities |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Fair Value, Amount Offset Against Collateral, Net |  | 73 | 15
Energy-Related Contracts | Not Designated as Hedging Instrument |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative Contracts, Current Assets |  | 403 | 912
Derivative Contracts, Noncurrent Assets |  | 375 | 440
Total Mark-to-Market Derivative Assets |  | 778 | 1,352
Derivative Contracts, Current Liabilities |  | (448) | (890)
Derivative Contracts, Noncurrent Liabilities |  | (408) | (424)
Total Mark-to-Market Derivative (Liabilities) |  | (856) | (1,314)
Net Mark-to-Market Derivative Assets (Liabilities) |  | (78) | 38
Energy-Related Contracts | Other Noncurrent Liabilities |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Fair Value, Amount Offset Against Collateral, Net | [1] | 404 | 419
Energy-Related Contracts | Other Current Assets |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Fair Value, Amount Offset Against Collateral, Net | [1] | (370) | (806)
Energy-Related Contracts | Other Noncurrent Assets |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Fair Value, Amount Offset Against Collateral, Net | [1] | (356) | (411)
Energy-Related Contracts | Assets |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Fair Value, Amount Offset Against Collateral, Net | [1],[2],[3] | (726) | (1,217)
Energy-Related Contracts | Other Current Liabilities |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Fair Value, Amount Offset Against Collateral, Net | [1] | 443 | 820
Energy-Related Contracts | Other Liabilities |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Fair Value, Amount Offset Against Collateral, Net | [1],[2],[3] | 847 | 1,239
Interest Rate Swap | Designated as Hedging Instrument |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative Contracts, Current Assets |  | 0 | 6
Derivative Contracts, Noncurrent Assets |  | 32 | 0
Total Mark-to-Market Derivative Assets |  | 32 | 6
Derivative Contracts, Current Liabilities |  | 0 | (16)
Derivative Contracts, Noncurrent Liabilities |  | 0 | (1)
Total Mark-to-Market Derivative (Liabilities) |  | 0 | (17)
Net Mark-to-Market Derivative Assets (Liabilities) |  | $ 32 | (11)
Interest Rate Swap | Other Liabilities |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Fair Value, Amount Offset Against Collateral, Net | [3] |  | $ 0
[1] | Represents the netting of fair value balances with the same counterparty (where the right of offset exists) and the application of cash collateral. All cash collateral (received) posted that has been allocated to derivative positions, where the right of offset exists, has been offset on the Consolidated Balance Sheets. As of December 31, 2024 and 2023, PSEG Power had net cash collateral payments to counterparties of $244 million and $113 million, respectively. Of these net cash collateral (receipts) payments, $121 million as of December 31, 2024 and $22 million as of December 31, 2023 were netted against the corresponding net derivative contract positions. Of the $121 million as of December 31, 2024, $73 million was netted against current liabilities and $48 million was netted against noncurrent liabilities. Of the $22 million as of December 31, 2023, $(1) million was netted against current assets, $15 million against current liabilities and $8 million against noncurrent liabilities.
[2] | Level 1—These contracts represent natural gas futures contracts executed on an exchange, and are being valued solely on settled pricing inputs which come directly from the exchange. Level 2—Fair values for energy-related contracts are obtained primarily using a market-based approach. Most derivative contracts (forward purchase or sale contracts and swaps) are valued using settled prices from similar assets and liabilities from an exchange, such as NYMEX, ICE and Nodal Exchange, or auction prices. Prices used in the valuation process are also corroborated independently by management to determine that values are based on actual transaction data or, in the absence of transactions, bid and offers for the day. Examples may include certain exchange and non-exchange traded capacity and electricity contracts and natural gas physical or swap contracts based on market prices, basis adjustments and other premiums where adjustments and premiums are not considered significant to the overall inputs. Level 3—Unobservable inputs are used for the valuation of certain contracts. See “Additional Information Regarding Level 3 Measurements” for more information on the utilization of unobservable inputs.
[3] | Represents the netting of fair value balances with the same counterparty (where the right of offset exists) and the application of collateral. See Note 16. Financial Risk Management Activities for additional detail.

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