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Financial Information By Business Segments | 9 Months Ended
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Sep. 30, 2018
Segment Reporting Information [Line Items] |
Financial Information By Business Segments | Financial Information by Business Segment
|  | PSE&G |  | Power |  | Other (A) |  | Eliminations (B) |  | Consolidated Total |
|  | Millions |
| Three Months Ended September 30, 2018 |  |  |  |  |  |  |  |  |  |
| Total Operating Revenues | $ | 1,595 |  |  | $ | 868 |  |  | $ | 151 |  |  | $ | (220 | ) |  | $ | 2,394 |  |
| Net Income (Loss) | 278 |  |  | 125 |  |  | 9 |  |  | — |  |  | 412 |  |
| Gross Additions to Long-Lived Assets | 766 |  |  | 253 |  |  | 4 |  |  | — |  |  | 1,023 |  |
| Nine Months Ended September 30, 2018 |  |  |  |  |  |  |  |  |  |
| Operating Revenues | $ | 4,826 |  |  | $ | 3,038 |  |  | $ | 421 |  |  | $ | (1,057 | ) |  | $ | 7,228 |  |
| Net Income (Loss) | 828 |  |  | 400 |  |  | 11 |  |  | — |  |  | 1,239 |  |
| Gross Additions to Long-Lived Assets | 2,213 |  |  | 800 |  |  | 15 |  |  | — |  |  | 3,028 |  |
| Three Months Ended September 30, 2017 |  |  |  |  |  |  |  |  |  |
| Total Operating Revenues | $ | 1,530 |  |  | $ | 846 |  |  | $ | 135 |  |  | $ | (257 | ) |  | $ | 2,254 |  |
| Net Income (Loss) | 246 |  |  | 136 |  |  | 13 |  |  | — |  |  | 395 |  |
| Gross Additions to Long-Lived Assets | 729 |  |  | 327 |  |  | 9 |  |  | — |  |  | 1,065 |  |
| Nine Months Ended September 30, 2017 |  |  |  |  |  |  |  |  |  |
| Operating Revenues | $ | 4,749 |  |  | $ | 3,033 |  |  | $ | 334 |  |  | $ | (1,129 | ) |  | $ | 6,987 |  |
| Net Income (Loss) | 753 |  |  | (131 | ) |  | (4 | ) |  | — |  |  | 618 |  |
| Gross Additions to Long-Lived Assets | 2,118 |  |  | 903 |  |  | 25 |  |  | — |  |  | 3,046 |  |
| As of September 30, 2018 |  |  |  |  |  |  |  |  |  |
| Total Assets | $ | 30,694 |  |  | $ | 12,681 |  |  | $ | 2,249 |  |  | $ | (551 | ) |  | $ | 45,073 |  |
| Investments in Equity Method Subsidiaries | — |  |  | 88 |  |  | — |  |  | — |  |  | 88 |  |
| As of December 31, 2017 |  |  |  |  |  |  |  |  |  |
| Total Assets | $ | 28,554 |  |  | $ | 12,418 |  |  | $ | 2,666 |  |  | $ | (922 | ) |  | $ | 42,716 |  |
| Investments in Equity Method Subsidiaries | — |  |  | 87 |  |  | — |  |  | — |  |  | 87 |  |
(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 corporation) and Services.
(B) | Intercompany eliminations primarily relate to intercompany transactions between PSE&G and Power. For a further discussion of the intercompany transactions between PSE&G and Power, see Note 19. Related-Party Transactions.
PSE And G [Member] |
Segment Reporting Information [Line Items] |
Financial Information By Business Segments | Financial Information by Business Segment
|  | PSE&G |  | Power |  | Other (A) |  | Eliminations (B) |  | Consolidated Total |
|  | Millions |
| Three Months Ended September 30, 2018 |  |  |  |  |  |  |  |  |  |
| Total Operating Revenues | $ | 1,595 |  |  | $ | 868 |  |  | $ | 151 |  |  | $ | (220 | ) |  | $ | 2,394 |  |
| Net Income (Loss) | 278 |  |  | 125 |  |  | 9 |  |  | — |  |  | 412 |  |
| Gross Additions to Long-Lived Assets | 766 |  |  | 253 |  |  | 4 |  |  | — |  |  | 1,023 |  |
| Nine Months Ended September 30, 2018 |  |  |  |  |  |  |  |  |  |
| Operating Revenues | $ | 4,826 |  |  | $ | 3,038 |  |  | $ | 421 |  |  | $ | (1,057 | ) |  | $ | 7,228 |  |
| Net Income (Loss) | 828 |  |  | 400 |  |  | 11 |  |  | — |  |  | 1,239 |  |
| Gross Additions to Long-Lived Assets | 2,213 |  |  | 800 |  |  | 15 |  |  | — |  |  | 3,028 |  |
| Three Months Ended September 30, 2017 |  |  |  |  |  |  |  |  |  |
| Total Operating Revenues | $ | 1,530 |  |  | $ | 846 |  |  | $ | 135 |  |  | $ | (257 | ) |  | $ | 2,254 |  |
| Net Income (Loss) | 246 |  |  | 136 |  |  | 13 |  |  | — |  |  | 395 |  |
| Gross Additions to Long-Lived Assets | 729 |  |  | 327 |  |  | 9 |  |  | — |  |  | 1,065 |  |
| Nine Months Ended September 30, 2017 |  |  |  |  |  |  |  |  |  |
| Operating Revenues | $ | 4,749 |  |  | $ | 3,033 |  |  | $ | 334 |  |  | $ | (1,129 | ) |  | $ | 6,987 |  |
| Net Income (Loss) | 753 |  |  | (131 | ) |  | (4 | ) |  | — |  |  | 618 |  |
| Gross Additions to Long-Lived Assets | 2,118 |  |  | 903 |  |  | 25 |  |  | — |  |  | 3,046 |  |
| As of September 30, 2018 |  |  |  |  |  |  |  |  |  |
| Total Assets | $ | 30,694 |  |  | $ | 12,681 |  |  | $ | 2,249 |  |  | $ | (551 | ) |  | $ | 45,073 |  |
| Investments in Equity Method Subsidiaries | — |  |  | 88 |  |  | — |  |  | — |  |  | 88 |  |
| As of December 31, 2017 |  |  |  |  |  |  |  |  |  |
| Total Assets | $ | 28,554 |  |  | $ | 12,418 |  |  | $ | 2,666 |  |  | $ | (922 | ) |  | $ | 42,716 |  |
| Investments in Equity Method Subsidiaries | — |  |  | 87 |  |  | — |  |  | — |  |  | 87 |  |
(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 corporation) and Services.
(B) | Intercompany eliminations primarily relate to intercompany transactions between PSE&G and Power. For a further discussion of the intercompany transactions between PSE&G and Power, see Note 19. Related-Party Transactions.
Power [Member] |
Segment Reporting Information [Line Items] |
Financial Information By Business Segments | Financial Information by Business Segment
|  | PSE&G |  | Power |  | Other (A) |  | Eliminations (B) |  | Consolidated Total |
|  | Millions |
| Three Months Ended September 30, 2018 |  |  |  |  |  |  |  |  |  |
| Total Operating Revenues | $ | 1,595 |  |  | $ | 868 |  |  | $ | 151 |  |  | $ | (220 | ) |  | $ | 2,394 |  |
| Net Income (Loss) | 278 |  |  | 125 |  |  | 9 |  |  | — |  |  | 412 |  |
| Gross Additions to Long-Lived Assets | 766 |  |  | 253 |  |  | 4 |  |  | — |  |  | 1,023 |  |
| Nine Months Ended September 30, 2018 |  |  |  |  |  |  |  |  |  |
| Operating Revenues | $ | 4,826 |  |  | $ | 3,038 |  |  | $ | 421 |  |  | $ | (1,057 | ) |  | $ | 7,228 |  |
| Net Income (Loss) | 828 |  |  | 400 |  |  | 11 |  |  | — |  |  | 1,239 |  |
| Gross Additions to Long-Lived Assets | 2,213 |  |  | 800 |  |  | 15 |  |  | — |  |  | 3,028 |  |
| Three Months Ended September 30, 2017 |  |  |  |  |  |  |  |  |  |
| Total Operating Revenues | $ | 1,530 |  |  | $ | 846 |  |  | $ | 135 |  |  | $ | (257 | ) |  | $ | 2,254 |  |
| Net Income (Loss) | 246 |  |  | 136 |  |  | 13 |  |  | — |  |  | 395 |  |
| Gross Additions to Long-Lived Assets | 729 |  |  | 327 |  |  | 9 |  |  | — |  |  | 1,065 |  |
| Nine Months Ended September 30, 2017 |  |  |  |  |  |  |  |  |  |
| Operating Revenues | $ | 4,749 |  |  | $ | 3,033 |  |  | $ | 334 |  |  | $ | (1,129 | ) |  | $ | 6,987 |  |
| Net Income (Loss) | 753 |  |  | (131 | ) |  | (4 | ) |  | — |  |  | 618 |  |
| Gross Additions to Long-Lived Assets | 2,118 |  |  | 903 |  |  | 25 |  |  | — |  |  | 3,046 |  |
| As of September 30, 2018 |  |  |  |  |  |  |  |  |  |
| Total Assets | $ | 30,694 |  |  | $ | 12,681 |  |  | $ | 2,249 |  |  | $ | (551 | ) |  | $ | 45,073 |  |
| Investments in Equity Method Subsidiaries | — |  |  | 88 |  |  | — |  |  | — |  |  | 88 |  |
| As of December 31, 2017 |  |  |  |  |  |  |  |  |  |
| Total Assets | $ | 28,554 |  |  | $ | 12,418 |  |  | $ | 2,666 |  |  | $ | (922 | ) |  | $ | 42,716 |  |
| Investments in Equity Method Subsidiaries | — |  |  | 87 |  |  | — |  |  | — |  |  | 87 |  |
(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 corporation) and Services.
(B) | Intercompany eliminations primarily relate to intercompany transactions between PSE&G and Power. For a further discussion of the intercompany transactions between PSE&G and Power, see Note 19. Related-Party Transactions.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI http://asc.fasb.org/topic&trid=2134510 + Details
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