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Financial Risk Management Activities (Tables) | 12 Months Ended
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Dec. 31, 2019
Disclosure Financial Risk Management Activities [Abstract] |
Schedule Of Derivative Instruments Fair Value In Balance Sheets | The following tabular disclosure does not include the offsetting of trade receivables and payables.
|  | As of December 31, 2019 |
|  | PSEG Power (A) |  | PSEG (A) |  | Consolidated |
|  | Not Designated |  |  |  |  |  | Cash Flow Hedges |  |  |
| Balance Sheet Location | Energy- Related Contracts |  | Netting (B) |  | Total PSEG Power |  | Interest Rate Swaps |  | Total Derivatives |
|  | Millions |
| Derivative Contracts |  |  |  |  |  |  |  |  |  |
| Current Assets | $ | 636 |  |  | $ | (523 | ) |  | $ | 113 |  |  | $ | — |  |  | $ | 113 |  |
| Noncurrent Assets | 163 |  |  | (139 | ) |  | 24 |  |  | — |  |  | 24 |  |
| Total Mark-to-Market Derivative Assets | $ | 799 |  |  | $ | (662 | ) |  | $ | 137 |  |  | $ | — |  |  | $ | 137 |  |
| Derivative Contracts |  |  |  |  |  |  |  |  |  |
| Current Liabilities | $ | (553 | ) |  | $ | 522 |  |  | $ | (31 | ) |  | $ | (5 | ) |  | $ | (36 | ) |
| Noncurrent Liabilities | (139 | ) |  | 138 |  |  | (1 | ) |  | — |  |  | (1 | ) |
| Total Mark-to-Market Derivative (Liabilities) | $ | (692 | ) |  | $ | 660 |  |  | $ | (32 | ) |  | $ | (5 | ) |  | $ | (37 | ) |
| Total Net Mark-to-Market Derivative Assets (Liabilities) | $ | 107 |  |  | $ | (2 | ) |  | $ | 105 |  |  | $ | (5 | ) |  | $ | 100 |  |
|  | As of December 31, 2018 |
|  |  | PSEG Power (A) |  | Consolidated |
|  |  | Not Designated |  |  |  |  |  |  |
| Balance Sheet Location |  | Energy- Related Contracts |  | Netting (B) |  | Total PSEG Power |  | Total Derivatives |
|  | Millions |
| Derivative Contracts |  |  |  |  |  |  |  |  |
| Current Assets |  | $ | 426 |  |  | $ | (415 | ) |  | $ | 11 |  |  | $ | 11 |  |
| Noncurrent Assets |  | 137 |  |  | (136 | ) |  | 1 |  |  | 1 |  |
| Total Mark-to-Market Derivative Assets |  | $ | 563 |  |  | $ | (551 | ) |  | $ | 12 |  |  | $ | 12 |  |
| Derivative Contracts |  |  |  |  |  |  |  |  |
| Current Liabilities |  | $ | (521 | ) |  | $ | 510 |  |  | $ | (11 | ) |  | $ | (11 | ) |
| Noncurrent Liabilities |  | (198 | ) |  | 194 |  |  | (4 | ) |  | (4 | ) |
| Total Mark-to-Market Derivative (Liabilities) |  | $ | (719 | ) |  | $ | 704 |  |  | $ | (15 | ) |  | $ | (15 | ) |
| Total Net Mark-to-Market Derivative Assets (Liabilities) |  | $ | (156 | ) |  | $ | 153 |  |  | $ | (3 | ) |  | $ | (3 | ) |
(A) | Substantially all of PSEG Power’s and PSEG’s derivative instruments are contracts subject to master netting agreements. Contracts not subject to master netting or similar agreements are immaterial and did not have any collateral posted or received as of December 31, 2019 and 2018.
(B) 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, 2019 and 2018, PSEG Power had net cash collateral payments to counterparties of $44 million and $393 million, respectively. Of these net cash collateral (receipts) payments, $(2) million as of December 31, 2019 and $153 million as of December 31, 2018 were netted against the corresponding net derivative contract positions. Of the $(2) million as of December 31, 2019, $(1) million was netted against current assets, and $(1) million was netted against noncurrent assets. Of the $153 million as of December 31, 2018, $(2) million was netted against current assets, $(3) million was netted against noncurrent assets, $96 million was netted against current liabilities and $62 million was netted against noncurrent liabilities.
Schedule Of Derivative Instruments Designated As Cash Flow Hedges | The following shows the effect on the Consolidated Statements of Operations and on Accumulated Other Comprehensive Loss (AOCL) of derivative instruments designated as cash flow hedges for the years ended December 31, 2019, 2018 and 2017.
|  |  | Amount of Pre-Tax Gain (Loss) Recognized in AOCL on Derivatives |  | Location of Pre-Tax Gain (Loss) Reclassified from AOCL into Income |  | Amount of Pre-Tax Gain (Loss) Reclassified from AOCL into Income |
| Derivatives in Cash Flow Hedging Relationships | Years Ended December 31, |  |  |  | Years Ended December 31, |
|  |  | 2019 |  | 2018 |  | 2017 |  |  |  | 2019 |  | 2018 |  | 2017 |
|  |  | Millions |  |  |  | Millions |
| PSEG |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Interest Rate Swaps |  | $ | (23 | ) |  | $ | (2 | ) |  | $ | — |  |  | Interest Expense |  | $ | (4 | ) |  | $ | — |  |  | $ | 3 |  |
| Total PSEG |  | $ | (23 | ) |  | $ | (2 | ) |  | $ | — |  |  |  |  | $ | (4 | ) |  | $ | — |  |  | $ | 3 |  |
Schedule Of Reconciliation For Derivative Activity Included In Accumulated Other Comprehensive Loss | The following reconciles the Accumulated Other Comprehensive Income (Loss) for derivative activity included in the AOCL of PSEG on a pre-tax and after-tax basis.
| Accumulated Other Comprehensive Income (Loss) |  | Pre-Tax |  | After-Tax |
|  |  | Millions |
| Balance as of December 31, 2017 |  | $ | — |  |  | $ | — |  |
| Loss Recognized in AOCI |  | (2 | ) |  | (1 | ) |
| Less: Gain Reclassified into Income |  | — |  |  | — |  |
| Balance as of December 31, 2018 |  | $ | (2 | ) |  | $ | (1 | ) |
| Loss Recognized in AOCI |  | (23 | ) |  | (17 | ) |
| Less: Loss Reclassified into Income |  | 4 |  |  | 3 |  |
| Balance as of December 31, 2019 |  | $ | (21 | ) |  | $ | (15 | ) |
Schedule Of Derivative Instruments Not Designated As Hedging Instruments And Impact On Results Of Operations | The following shows the effect on the Consolidated Statements of Operations of derivative instruments not designated as hedging instruments or as NPNS for the years ended December 31, 2019, 2018 and 2017. PSEG Power’s derivative contracts reflected in this table include contracts to hedge the purchase and sale of electricity and natural gas, and the purchase of fuel. The table does not include contracts which PSEG Power has designated as NPNS, such as its BGS contracts and certain other energy supply contracts that it has with other utilities and companies with retail load.
| Derivatives Not Designated as Hedges |  | Location of Pre-Tax Gain (Loss) Recognized in Income on Derivatives |  | Pre-Tax Gain (Loss) Recognized in Income on Derivatives |
|  |  |  |  | Years Ended December 31, |
|  |  |  |  | 2019 |  | 2018 |  | 2017 |
|  |  |  |  | Millions |
| PSEG Power |  |  |  |  |  |  |  |  |
| Energy-Related Contracts |  | Operating Revenues |  | $ | 560 |  |  | $ | (182 | ) |  | $ | 66 |  |
| Energy-Related Contracts |  | Energy Costs |  | (119 | ) |  | (9 | ) |  | (11 | ) |
| Total PSEG and PSEG Power |  |  |  | $ | 441 |  |  | $ | (191 | ) |  | $ | 55 |  |
Schedule Of Gross Volume, On Absolute Value Basis For Derivative Contracts | The following table summarizes the net notional volume purchases/(sales) of open derivative transactions by commodity as of December 31, 2019 and 2018.
| Type |  | Notional |  | Total |  | PSEG |  | PSEG Power |  | PSE&G |
|  |  | Millions |
| As of December 31, 2019 |  |  |  |  |  |  |  |  |  |  |
| Natural Gas |  | Dekatherm (Dth) |  | 341 |  |  | — |  |  | 341 |  |  | — |  |
| Electricity |  | MWh |  | (62 | ) |  | — |  |  | (62 | ) |  | — |  |
| Financial Transmission Rights (FTRs) |  | MWh |  | 13 |  |  | — |  |  | 13 |  |  | — |  |
| Interest Rate Swaps |  | U.S. Dollars |  | 700 |  |  | 700 |  |  | — |  |  | — |  |
| As of December 31, 2018 |  |  |  |  |  |  |  |  |  |  |
| Natural Gas |  | Dth |  | 358 |  |  | — |  |  | 358 |  |  | — |  |
| Electricity |  | MWh |  | (74 | ) |  | — |  |  | (74 | ) |  | — |  |
| FTRs |  | MWh |  | 18 |  |  | — |  |  | 18 |  |  | — |  |
Schedule Providing Credit Risk From Others, Net Of Collateral |
| Rating |  | Current Exposure |  | Securities held as Collateral |  | Net Exposure |  | Number of Counterparties >10% |  | Net Exposure of Counterparties >10% |  |
|  |  | Millions |  |  |  | Millions |  |
| Investment Grade |  | $ | 505 |  |  | $ | 26 |  |  | $ | 479 |  |  | 2 |  |  | $ | 263 |  | (A) |
| Non-Investment Grade |  | 3 |  |  | — |  |  | 3 |  |  | — |  |  | — |  |  |
| Total |  | $ | 508 |  |  | $ | 26 |  |  | $ | 482 |  |  | 2 |  |  | $ | 263 |  |  |
(A) Represents net exposure of $213 million with PSE&G and $50 million with a non-affiliated counterparty.

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- Definition Schedule of reconciliation for derivative activity included in accumulated other comprehensive loss + References No definition available. + Details
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- Definition Tabular disclosure of credit derivatives which includes information by sellers of credit derivatives, about each credit derivative, or each group of similar credit derivatives, including (a) the nature of the credit derivative - its term, how it arose, the events or circumstances that would require the seller to perform under the credit derivative, and the current status of the payment/performance risk of the credit derivative; (b) the maximum potential amount of future payments (undiscounted) the seller could be required to make under the credit derivative; (c) the current fair value of the credit derivative; and (d) the nature of any recourse provisions under the credit derivative, and any assets held either as collateral or by third parties. A credit derivative is a derivative instrument (1) in which one or more of its underlyings are related to the credit risk of a specified entity (or a group of entities) or an index based on the credit risk of a group of entities and (2) that exposes the seller to potential loss from credit-risk-related events specified in the contract. Examples of credit derivatives within the scope of this paragraph include, but are not limited to, credit default swaps, credit spread options, and credit index products; also includes a hybrid instrument that has an embedded credit derivative (for example, but not limited to, a credit-linked note). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5708773-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5708775-113959 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4L -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5708777-113959 + Details
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- Definition Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959 + Details
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