v3.26.1
Financial Risk Management Activities - Schedule of Derivative Instruments Fair Value in Balance Sheets (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Derivatives, Fair Value [Line Items]    
Derivative Contracts, Current Assets $ 4 $ 11
Derivative Contracts, Noncurrent Assets 11 6
Total Mark-to-Market Derivative Assets 15 17
Derivative Contracts, Current Liabilities (124) (65)
Derivative Contracts, Noncurrent Liabilities (4) (21)
Total Mark-to-Market Derivative (Liabilities) (128) (86)
Net Mark-to-Market Derivative Assets (Liabilities) (113) (69)
Derivative, Fair Value, Amount Offset Against Collateral, Net [1] 96 99
PSEG Power    
Derivatives, Fair Value [Line Items]    
Derivative Contracts, Current Assets 3 11
Derivative Contracts, Noncurrent Assets 3 2
Total Mark-to-Market Derivative Assets 6 13
Derivative Contracts, Current Liabilities (124) (65)
Derivative Contracts, Noncurrent Liabilities (4) (21)
Total Mark-to-Market Derivative (Liabilities) (128) (86)
Net Mark-to-Market Derivative Assets (Liabilities) (122) (73)
Other Noncurrent Liabilities    
Derivatives, Fair Value [Line Items]    
Derivative, Fair Value, Amount Offset Against Collateral, Net 16 85
Other Noncurrent Assets    
Derivatives, Fair Value [Line Items]    
Derivative, Fair Value, Amount Offset Against Collateral, Net (2)  
Other Current Liabilities    
Derivatives, Fair Value [Line Items]    
Derivative, Fair Value, Amount Offset Against Collateral, Net 82 14
Energy-Related Contracts [Member] | Not Designated as Hedging Instrument    
Derivatives, Fair Value [Line Items]    
Derivative Contracts, Current Assets 1,296 782
Derivative Contracts, Noncurrent Assets 1,050 871
Total Mark-to-Market Derivative Assets 2,346 1,653
Derivative Contracts, Current Liabilities (1,499) (850)
Derivative Contracts, Noncurrent Liabilities (1,065) (975)
Total Mark-to-Market Derivative (Liabilities) (2,564) (1,825)
Net Mark-to-Market Derivative Assets (Liabilities) (218) (172)
Energy-Related Contracts [Member] | Other Noncurrent Liabilities    
Derivatives, Fair Value [Line Items]    
Derivative, Fair Value, Amount Offset Against Collateral, Net [1] (1,047) 954
Energy-Related Contracts [Member] | Other Current Assets    
Derivatives, Fair Value [Line Items]    
Derivative, Fair Value, Amount Offset Against Collateral, Net [1] (1,293) (771)
Energy-Related Contracts [Member] | Other Noncurrent Assets    
Derivatives, Fair Value [Line Items]    
Derivative, Fair Value, Amount Offset Against Collateral, Net [1] 1,061 (869)
Energy-Related Contracts [Member] | Assets    
Derivatives, Fair Value [Line Items]    
Derivative, Fair Value, Amount Offset Against Collateral, Net [1],[2],[3] (2,340) (1,640)
Energy-Related Contracts [Member] | Other Current Liabilities    
Derivatives, Fair Value [Line Items]    
Derivative, Fair Value, Amount Offset Against Collateral, Net [1] 1,375 785
Energy-Related Contracts [Member] | Other Liabilities    
Derivatives, Fair Value [Line Items]    
Derivative, Fair Value, Amount Offset Against Collateral, Net [1],[2],[3] 2,436 1,739
Interest Rate Swap [Member] | Designated as Hedging Instrument    
Derivatives, Fair Value [Line Items]    
Derivative Contracts, Current Assets 1 0
Derivative Contracts, Noncurrent Assets 8 4
Total Mark-to-Market Derivative Assets 9 4
Derivative Contracts, Current Liabilities 0 0
Derivative Contracts, Noncurrent Liabilities 0 0
Total Mark-to-Market Derivative (Liabilities) 0 0
Net Mark-to-Market Derivative Assets (Liabilities) $ 9 $ 4
[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 Condensed Consolidated Balance Sheets. As of March 31, 2026 and December 31, 2025, PSEG Power had net cash collateral (receipts) payments to counterparties of $221 million and $222 million, respectively. Of these net cash collateral (receipts) payments, $96 million as of March 31, 2026 and $99 million as of December 31, 2025 were netted against the corresponding net derivative contract positions. Of the $96 million as of March 31, 2026, $(2) million was netted against noncurrent assets, $82 million was netted against current liabilities and $16 million against noncurrent liabilities. Of the $99 million as of December 31, 2025, $14 million was netted against current liabilities and $85 million against noncurrent liabilities.
[2] Level 1—These contracts represent natural gas and electric futures contracts executed on an exchange, and are being valued solely on settled pricing inputs which come directly from the exchange such as NYMEX, ICE and Nodal 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, futures, swaps and all options) 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 electricity, capacity and natural gas 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 10. Financial Risk Management Activities for additional detail.