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Financial Information By Business Segments | 3 Months Ended
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Mar. 31, 2016
Segment Reporting Information [Line Items] |
Financial Information By Business Segments | Financial Information by Business Segment
|  | PSE&G |  | Power |  | Other (A) |  | Eliminations (B) |  | Consolidated |
|  | Millions |
| Three Months Ended March 31, 2016 |  |  |  |  |  |  |  |  |  |
| Operating Revenues | $ | 1,712 |  |  | $ | 1,313 |  |  | $ | 122 |  |  | $ | (531 | ) |  | $ | 2,616 |  |
| Net Income (Loss) | 262 |  |  | 192 |  |  | 17 |  |  | — |  |  | 471 |  |
| Gross Additions to Long-Lived Assets | 724 |  |  | 333 |  |  | 8 |  |  | — |  |  | 1,065 |  |
| Three Months Ended March 31, 2015 |  |  |  |  |  |  |  |  |  |
| Operating Revenues | $ | 2,002 |  |  | $ | 1,725 |  |  | $ | 98 |  |  | $ | (690 | ) |  | $ | 3,135 |  |
| Net Income (Loss) | 242 |  |  | 335 |  |  | 9 |  |  | — |  |  | 586 |  |
| Gross Additions to Long-Lived Assets | 599 |  |  | 139 |  |  | 9 |  |  | — |  |  | 747 |  |
| As of March 31, 2016 |  |  |  |  |  |  |  |  |  |
| Total Assets | $ | 24,372 |  |  | $ | 12,617 |  |  | $ | 2,462 |  |  | $ | (1,325 | ) |  | $ | 38,126 |  |
| Investments in Equity Method Subsidiaries | $ | — |  |  | $ | 116 |  |  | $ | — |  |  | $ | — |  |  | $ | 116 |  |
| As of December 31, 2015 |  |  |  |  |  |  |  |  |  |
| Total Assets | $ | 23,677 |  |  | $ | 12,250 |  |  | $ | 2,810 |  |  | $ | (1,202 | ) |  | $ | 37,535 |  |
| Investments in Equity Method Subsidiaries | $ | — |  |  | $ | 119 |  |  | $ | — |  |  | $ | — |  |  | $ | 119 |  |
(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. No gains or losses are recorded on any intercompany transactions; rather, all intercompany transactions are at cost or, in the case of the BGS and BGSS contracts between PSE&G and Power, at rates prescribed by the BPU. For a further discussion of the intercompany transactions between PSE&G and Power, see Note 17. 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 |
|  | Millions |
| Three Months Ended March 31, 2016 |  |  |  |  |  |  |  |  |  |
| Operating Revenues | $ | 1,712 |  |  | $ | 1,313 |  |  | $ | 122 |  |  | $ | (531 | ) |  | $ | 2,616 |  |
| Net Income (Loss) | 262 |  |  | 192 |  |  | 17 |  |  | — |  |  | 471 |  |
| Gross Additions to Long-Lived Assets | 724 |  |  | 333 |  |  | 8 |  |  | — |  |  | 1,065 |  |
| Three Months Ended March 31, 2015 |  |  |  |  |  |  |  |  |  |
| Operating Revenues | $ | 2,002 |  |  | $ | 1,725 |  |  | $ | 98 |  |  | $ | (690 | ) |  | $ | 3,135 |  |
| Net Income (Loss) | 242 |  |  | 335 |  |  | 9 |  |  | — |  |  | 586 |  |
| Gross Additions to Long-Lived Assets | 599 |  |  | 139 |  |  | 9 |  |  | — |  |  | 747 |  |
| As of March 31, 2016 |  |  |  |  |  |  |  |  |  |
| Total Assets | $ | 24,372 |  |  | $ | 12,617 |  |  | $ | 2,462 |  |  | $ | (1,325 | ) |  | $ | 38,126 |  |
| Investments in Equity Method Subsidiaries | $ | — |  |  | $ | 116 |  |  | $ | — |  |  | $ | — |  |  | $ | 116 |  |
| As of December 31, 2015 |  |  |  |  |  |  |  |  |  |
| Total Assets | $ | 23,677 |  |  | $ | 12,250 |  |  | $ | 2,810 |  |  | $ | (1,202 | ) |  | $ | 37,535 |  |
| Investments in Equity Method Subsidiaries | $ | — |  |  | $ | 119 |  |  | $ | — |  |  | $ | — |  |  | $ | 119 |  |
(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. No gains or losses are recorded on any intercompany transactions; rather, all intercompany transactions are at cost or, in the case of the BGS and BGSS contracts between PSE&G and Power, at rates prescribed by the BPU. For a further discussion of the intercompany transactions between PSE&G and Power, see Note 17. 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 |
|  | Millions |
| Three Months Ended March 31, 2016 |  |  |  |  |  |  |  |  |  |
| Operating Revenues | $ | 1,712 |  |  | $ | 1,313 |  |  | $ | 122 |  |  | $ | (531 | ) |  | $ | 2,616 |  |
| Net Income (Loss) | 262 |  |  | 192 |  |  | 17 |  |  | — |  |  | 471 |  |
| Gross Additions to Long-Lived Assets | 724 |  |  | 333 |  |  | 8 |  |  | — |  |  | 1,065 |  |
| Three Months Ended March 31, 2015 |  |  |  |  |  |  |  |  |  |
| Operating Revenues | $ | 2,002 |  |  | $ | 1,725 |  |  | $ | 98 |  |  | $ | (690 | ) |  | $ | 3,135 |  |
| Net Income (Loss) | 242 |  |  | 335 |  |  | 9 |  |  | — |  |  | 586 |  |
| Gross Additions to Long-Lived Assets | 599 |  |  | 139 |  |  | 9 |  |  | — |  |  | 747 |  |
| As of March 31, 2016 |  |  |  |  |  |  |  |  |  |
| Total Assets | $ | 24,372 |  |  | $ | 12,617 |  |  | $ | 2,462 |  |  | $ | (1,325 | ) |  | $ | 38,126 |  |
| Investments in Equity Method Subsidiaries | $ | — |  |  | $ | 116 |  |  | $ | — |  |  | $ | — |  |  | $ | 116 |  |
| As of December 31, 2015 |  |  |  |  |  |  |  |  |  |
| Total Assets | $ | 23,677 |  |  | $ | 12,250 |  |  | $ | 2,810 |  |  | $ | (1,202 | ) |  | $ | 37,535 |  |
| Investments in Equity Method Subsidiaries | $ | — |  |  | $ | 119 |  |  | $ | — |  |  | $ | — |  |  | $ | 119 |  |
(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. No gains or losses are recorded on any intercompany transactions; rather, all intercompany transactions are at cost or, in the case of the BGS and BGSS contracts between PSE&G and Power, at rates prescribed by the BPU. For a further discussion of the intercompany transactions between PSE&G and Power, see Note 17. 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 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8981-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e9038-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8971-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8595-108599 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8380-108599 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8933-108599 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8844-108599 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8984-108599 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e9031-108599 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e9054-108599 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8538-108599 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 29 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8864-108599 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8924-108599 Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e8906-108599 + Details
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