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Financial Information By Business Segments (Tables) | 9 Months Ended
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Sep. 30, 2021
Segment Reporting [Abstract] |
Financial Information By Business Segments |
|  | PSE&G |  | PSEG Power |  | Other (A) |  | Eliminations (B) |  | Consolidated Total |
|  | Millions |
| Three Months Ended September 30, 2021 |  |  |  |  |  |  |  |  |  |
| Total Operating Revenues | $ | 1,820 |  |  | $ | 51 |  |  | $ | 159 |  |  | $ | (127) |  |  | $ | 1,903 |  |
| Net Income (Loss) (C) | 389 |  |  | (1,933) |  |  | (20) |  |  | — |  |  | (1,564) |  |
| Gross Additions to Long-Lived Assets | 599 |  |  | 140 |  |  | 4 |  |  | — |  |  | 743 |  |
| Nine Months Ended September 30, 2021 |  |  |  |  |  |  |  |  |  |
| Operating Revenues | $ | 5,407 |  |  | $ | 1,598 |  |  | $ | 465 |  |  | $ | (804) |  |  | $ | 6,666 |  |
| Net Income (Loss) (C) | 1,175 |  |  | (2,255) |  |  | (13) |  |  | — |  |  | (1,093) |  |
| Gross Additions to Long-Lived Assets | 1,818 |  |  | 222 |  |  | 6 |  |  | — |  |  | 2,046 |  |
| Three Months Ended September 30, 2020 |  |  |  |  |  |  |  |  |  |
| Total Operating Revenues | $ | 1,660 |  |  | $ | 746 |  |  | $ | 143 |  |  | $ | (179) |  |  | $ | 2,370 |  |
| Net Income (Loss) (D) | 313 |  |  | 254 |  |  | 8 |  |  | — |  |  | 575 |  |
| Gross Additions to Long-Lived Assets | 587 |  |  | 89 |  |  | 2 |  |  | — |  |  | 678 |  |
| Nine Months Ended September 30, 2020 |  |  |  |  |  |  |  |  |  |
| Operating Revenues | $ | 4,999 |  |  | $ | 2,649 |  |  | $ | 447 |  |  | $ | (894) |  |  | $ | 7,201 |  |
| Net Income (Loss) (D) | 1,036 |  |  | 437 |  |  | 1 |  |  | — |  |  | 1,474 |  |
| Gross Additions to Long-Lived Assets | 1,777 |  |  | 307 |  |  | 8 |  |  | — |  |  | 2,092 |  |
| As of September 30, 2021 |  |  |  |  |  |  |  |  |  |
| Total Assets | $ | 37,179 |  |  | $ | 8,950 |  |  | $ | 4,558 |  |  | $ | (1,261) |  |  | $ | 49,426 |  |
| Investments in Equity Method Subsidiaries | $ | — |  |  | $ | 64 |  |  | $ | 98 |  |  | $ | — |  |  | $ | 162 |  |
| As of December 31, 2020 |  |  |  |  |  |  |  |  |  |
| Total Assets | $ | 35,581 |  |  | $ | 12,704 |  |  | $ | 2,692 |  |  | $ | (927) |  |  | $ | 50,050 |  |
| Investments in Equity Method Subsidiaries | $ | — |  |  | $ | 64 |  |  | $ | — |  |  | $ | — |  |  | $ | 64 |  |
(A)Includes amounts applicable to Energy Holdings and PSEG LI, which are below the quantitative threshold for separate disclosure as reportable segments. Other also includes amounts applicable to PSEG (parent company) and Services. (B)Intercompany eliminations primarily relate to intercompany transactions between PSE&G and PSEG Power. For a further discussion of the intercompany transactions between PSE&G and PSEG Power, see Note 20. Related-Party Transactions. (C)Includes after-tax impairment losses and other charges related to the pending sale of the Fossil generating assets at PSEG Power of $1,563 million and $1,936 million for the three and nine months ended September 30, 2021, respectively. See Note 4. Early Plant Retirements/Asset Dispositions and Impairments for additional information. Also includes net after-tax losses of $478 million and $718 million for the three and nine months ended September 30, 2021 related to the impacts of non-trading commodity mark-to-market activity, which consist of the financial impact from positions with future delivery dates. (D)Includes an after-tax gain of $86 million in the three and nine months ended September 30, 2020 related to the sale of PSEG Power’s interest in the Yards Creek generation facility. See Note 4. Early Plant Retirements/Asset Dispositions and Impairments.

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8813-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599 + Details
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