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Guarantees of Debt | 12 Months Ended
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Dec. 31, 2017
Guarantees of Debt [Line Items] |
Guarantees of Debt | Guarantees of Debt Power’s Senior Notes are fully and unconditionally and jointly and severally guaranteed by its subsidiaries, PSEG Fossil LLC, PSEG Nuclear LLC and PSEG Energy Resources & Trade LLC. The following tables present condensed financial information for the guarantor subsidiaries, as well as Power’s non-guarantor subsidiaries, as of December 31, 2017 and 2016 and for the years ended December 31, 2017, 2016 and 2015.
|  |  | Power |  | Guarantor Subsidiaries |  | Other Subsidiaries |  | Consolidating Adjustments |  | Total |
|  |  | Millions |
| Year Ended December 31, 2017 |  |  |  |  |  |  |  |  |  |  |
| Operating Revenues |  | $ | — |  |  | $ | 3,891 |  |  | $ | 174 |  |  | $ | (135 | ) |  | $ | 3,930 |  |
| Operating Expenses |  | 8 |  |  | 4,221 |  |  | 195 |  |  | (135 | ) |  | 4,289 |  |
| Operating Income (Loss) |  | (8 | ) |  | (330 | ) |  | (21 | ) |  | — |  |  | (359 | ) |
| Equity Earnings (Losses) of Subsidiaries |  | 567 |  |  | 60 |  |  | 14 |  |  | (627 | ) |  | 14 |  |
| Other Income |  | 98 |  |  | 257 |  |  | 2 |  |  | (144 | ) |  | 213 |  |
| Other Deductions |  | (24 | ) |  | (32 | ) |  | — |  |  | — |  |  | (56 | ) |
| Other-Than-Temporary Impairments |  | — |  |  | (12 | ) |  | — |  |  | — |  |  | (12 | ) |
| Interest Expense |  | (128 | ) |  | (49 | ) |  | (17 | ) |  | 144 |  |  | (50 | ) |
| Income Tax Benefit (Expense) |  | (26 | ) |  | 588 |  |  | 167 |  |  | — |  |  | 729 |  |
| Net Income (Loss) |  | $ | 479 |  |  | $ | 482 |  |  | $ | 145 |  |  | $ | (627 | ) |  | $ | 479 |  |
| Comprehensive Income (Loss) |  | $ | 518 |  |  | $ | 529 |  |  | $ | 145 |  |  | $ | (674 | ) |  | $ | 518 |  |
| As of December 31, 2017 |  |  |  |  |  |  |  |  |  |  |
| Current Assets |  | $ | 4,327 |  |  | $ | 1,500 |  |  | $ | 200 |  |  | $ | (4,686 | ) |  | $ | 1,341 |  |
| Property, Plant and Equipment, net |  | 54 |  |  | 5,778 |  |  | 2,764 |  |  | — |  |  | 8,596 |  |
| Investment in Subsidiaries |  | 4,844 |  |  | 404 |  |  | — |  |  | (5,248 | ) |  | — |  |
| Noncurrent Assets |  | 100 |  |  | 2,349 |  |  | 110 |  |  | (78 | ) |  | 2,481 |  |
| Total Assets |  | $ | 9,325 |  |  | $ | 10,031 |  |  | $ | 3,074 |  |  | $ | (10,012 | ) |  | $ | 12,418 |  |
| Current Liabilities |  | $ | 689 |  |  | $ | 3,586 |  |  | $ | 1,846 |  |  | $ | (4,686 | ) |  | $ | 1,435 |  |
| Noncurrent Liabilities |  | 533 |  |  | 1,966 |  |  | 459 |  |  | (78 | ) |  | 2,880 |  |
| Long-Term Debt |  | 2,136 |  |  | — |  |  | — |  |  | — |  |  | 2,136 |  |
| Member’s Equity |  | 5,967 |  |  | 4,479 |  |  | 769 |  |  | (5,248 | ) |  | 5,967 |  |
| Total Liabilities and Member’s Equity |  | $ | 9,325 |  |  | $ | 10,031 |  |  | $ | 3,074 |  |  | $ | (10,012 | ) |  | $ | 12,418 |  |
| Year Ended December 31, 2017 |  |  |  |  |  |  |  |  |  |  |
| Net Cash Provided By (Used In) Operating Activities |  | $ | (42 | ) |  | $ | 1,185 |  |  | $ | 238 |  |  | $ | (55 | ) |  | $ | 1,326 |  |
| Net Cash Provided By (Used In) Investing Activities |  | $ | 506 |  |  | $ | (448 | ) |  | $ | (525 | ) |  | $ | (765 | ) |  | $ | (1,232 | ) |
| Net Cash Provided By (Used In) Financing Activities |  | $ | (464 | ) |  | $ | (736 | ) |  | $ | 307 |  |  | $ | 820 |  |  | $ | (73 | ) |
|  |  | Power |  | Guarantor Subsidiaries |  | Other Subsidiaries |  | Consolidating Adjustments |  | Total |
|  |  | Millions |
| Year Ended December 31, 2016 |  |  |  |  |  |  |  |  |  |  |
| Operating Revenues |  | $ | — |  |  | $ | 3,971 |  |  | $ | 173 |  |  | $ | (121 | ) |  | $ | 4,023 |  |
| Operating Expenses |  | 8 |  |  | 3,962 |  |  | 161 |  |  | (121 | ) |  | 4,010 |  |
| Operating Income (Loss) |  | (8 | ) |  | 9 |  |  | 12 |  |  | — |  |  | 13 |  |
| Equity Earnings (Losses) of Subsidiaries |  | 36 |  |  | (3 | ) |  | 11 |  |  | (33 | ) |  | 11 |  |
| Other Income |  | 71 |  |  | 120 |  |  | — |  |  | (89 | ) |  | 102 |  |
| Other Deductions |  | (18 | ) |  | (39 | ) |  | — |  |  | — |  |  | (57 | ) |
| Other-Than-Temporary Impairments |  | — |  |  | (28 | ) |  | — |  |  | — |  |  | (28 | ) |
| Interest Expense |  | (115 | ) |  | (40 | ) |  | (18 | ) |  | 89 |  |  | (84 | ) |
| Income Tax Benefit (Expense) |  | 52 |  |  | (11 | ) |  | 20 |  |  | — |  |  | 61 |  |
| Net Income (Loss) |  | $ | 18 |  |  | $ | 8 |  |  | $ | 25 |  |  | $ | (33 | ) |  | $ | 18 |  |
| Comprehensive Income (Loss) |  | $ | 47 |  |  | $ | 50 |  |  | $ | 25 |  |  | $ | (75 | ) |  | $ | 47 |  |
| As of December 31, 2016 |  |  |  |  |  |  |  |  |  |  |
| Current Assets |  | $ | 4,412 |  |  | $ | 1,593 |  |  | $ | 152 |  |  | $ | (4,697 | ) |  | $ | 1,460 |  |
| Property, Plant and Equipment, net |  | 55 |  |  | 6,145 |  |  | 2,320 |  |  | — |  |  | 8,520 |  |
| Investment in Subsidiaries |  | 4,249 |  |  | 344 |  |  | — |  |  | (4,593 | ) |  | — |  |
| Noncurrent Assets |  | 168 |  |  | 2,016 |  |  | 129 |  |  | (100 | ) |  | 2,213 |  |
| Total Assets |  | $ | 8,884 |  |  | $ | 10,098 |  |  | $ | 2,601 |  |  | $ | (9,390 | ) |  | $ | 12,193 |  |
| Current Liabilities |  | $ | 171 |  |  | $ | 3,752 |  |  | $ | 1,454 |  |  | $ | (4,697 | ) |  | $ | 680 |  |
| Noncurrent Liabilities |  | 532 |  |  | 2,398 |  |  | 502 |  |  | (100 | ) |  | 3,332 |  |
| Long-Term Debt |  | 2,382 |  |  | — |  |  | — |  |  | — |  |  | 2,382 |  |
| Member’s Equity |  | 5,799 |  |  | 3,948 |  |  | 645 |  |  | (4,593 | ) |  | 5,799 |  |
| Total Liabilities and Member’s Equity |  | $ | 8,884 |  |  | $ | 10,098 |  |  | $ | 2,601 |  |  | $ | (9,390 | ) |  | $ | 12,193 |  |
| Year Ended December 31, 2016 |  |  |  |  |  |  |  |  |  |  |
| Net Cash Provided By (Used In) Operating Activities |  | $ | 97 |  |  | $ | 1,442 |  |  | $ | 323 |  |  | $ | (607 | ) |  | $ | 1,255 |  |
| Net Cash Provided By (Used In) Investing Activities |  | $ | 60 |  |  | $ | (707 | ) |  | $ | (789 | ) |  | $ | 289 |  |  | $ | (1,147 | ) |
| Net Cash Provided By (Used In) Financing Activities |  | $ | (157 | ) |  | $ | (736 | ) |  | $ | 466 |  |  | $ | 318 |  |  | $ | (109 | ) |
|  |  | Power |  | Guarantor Subsidiaries |  | Other Subsidiaries |  | Consolidating Adjustments |  | Total |
|  |  | Millions |
| Year Ended December 31, 2015 |  |  |  |  |  |  |  |  |  |  |
| Operating Revenues |  | $ | — |  |  | $ | 4,883 |  |  | $ | 179 |  |  | $ | (134 | ) |  | $ | 4,928 |  |
| Operating Expenses |  | 12 |  |  | 3,451 |  |  | 169 |  |  | (134 | ) |  | 3,498 |  |
| Operating Income (Loss) |  | (12 | ) |  | 1,432 |  |  | 10 |  |  | — |  |  | 1,430 |  |
| Equity Earnings (Losses) of Subsidiaries |  | 906 |  |  | (4 | ) |  | 14 |  |  | (902 | ) |  | 14 |  |
| Other Income |  | 48 |  |  | 174 |  |  | — |  |  | (53 | ) |  | 169 |  |
| Other Deductions |  | (27 | ) |  | (45 | ) |  | — |  |  | — |  |  | (72 | ) |
| Other-Than-Temporary Impairments |  | — |  |  | (53 | ) |  | — |  |  | — |  |  | (53 | ) |
| Interest Expense |  | (116 | ) |  | (39 | ) |  | (19 | ) |  | 53 |  |  | (121 | ) |
| Income Tax Benefit (Expense) |  | 57 |  |  | (574 | ) |  | 6 |  |  | — |  |  | (511 | ) |
| Net Income (Loss) |  | $ | 856 |  |  | $ | 891 |  |  | $ | 11 |  |  | $ | (902 | ) |  | $ | 856 |  |
| Comprehensive Income (Loss) |  | $ | 844 |  |  | $ | 855 |  |  | $ | 11 |  |  | $ | (866 | ) |  | $ | 844 |  |
| Year Ended December 31, 2015 |  |  |  |  |  |  |  |  |  |  |
| Net Cash Provided By (Used In) Operating Activities |  | $ | 571 |  |  | $ | 2,089 |  |  | $ | 80 |  |  | $ | (1,034 | ) |  | $ | 1,706 |  |
| Net Cash Provided By (Used In) Investing Activities |  | $ | (366 | ) |  | $ | (1,519 | ) |  | $ | (430 | ) |  | $ | 1,314 |  |  | $ | (1,001 | ) |
| Net Cash Provided By (Used In) Financing Activities |  | $ | (205 | ) |  | $ | (571 | ) |  | $ | 354 |  |  | $ | (280 | ) |  | $ | (702 | ) |
Power [Member] |
Guarantees of Debt [Line Items] |
Guarantees of Debt | Guarantees of Debt Power’s Senior Notes are fully and unconditionally and jointly and severally guaranteed by its subsidiaries, PSEG Fossil LLC, PSEG Nuclear LLC and PSEG Energy Resources & Trade LLC. The following tables present condensed financial information for the guarantor subsidiaries, as well as Power’s non-guarantor subsidiaries, as of December 31, 2017 and 2016 and for the years ended December 31, 2017, 2016 and 2015.
|  |  | Power |  | Guarantor Subsidiaries |  | Other Subsidiaries |  | Consolidating Adjustments |  | Total |
|  |  | Millions |
| Year Ended December 31, 2017 |  |  |  |  |  |  |  |  |  |  |
| Operating Revenues |  | $ | — |  |  | $ | 3,891 |  |  | $ | 174 |  |  | $ | (135 | ) |  | $ | 3,930 |  |
| Operating Expenses |  | 8 |  |  | 4,221 |  |  | 195 |  |  | (135 | ) |  | 4,289 |  |
| Operating Income (Loss) |  | (8 | ) |  | (330 | ) |  | (21 | ) |  | — |  |  | (359 | ) |
| Equity Earnings (Losses) of Subsidiaries |  | 567 |  |  | 60 |  |  | 14 |  |  | (627 | ) |  | 14 |  |
| Other Income |  | 98 |  |  | 257 |  |  | 2 |  |  | (144 | ) |  | 213 |  |
| Other Deductions |  | (24 | ) |  | (32 | ) |  | — |  |  | — |  |  | (56 | ) |
| Other-Than-Temporary Impairments |  | — |  |  | (12 | ) |  | — |  |  | — |  |  | (12 | ) |
| Interest Expense |  | (128 | ) |  | (49 | ) |  | (17 | ) |  | 144 |  |  | (50 | ) |
| Income Tax Benefit (Expense) |  | (26 | ) |  | 588 |  |  | 167 |  |  | — |  |  | 729 |  |
| Net Income (Loss) |  | $ | 479 |  |  | $ | 482 |  |  | $ | 145 |  |  | $ | (627 | ) |  | $ | 479 |  |
| Comprehensive Income (Loss) |  | $ | 518 |  |  | $ | 529 |  |  | $ | 145 |  |  | $ | (674 | ) |  | $ | 518 |  |
| As of December 31, 2017 |  |  |  |  |  |  |  |  |  |  |
| Current Assets |  | $ | 4,327 |  |  | $ | 1,500 |  |  | $ | 200 |  |  | $ | (4,686 | ) |  | $ | 1,341 |  |
| Property, Plant and Equipment, net |  | 54 |  |  | 5,778 |  |  | 2,764 |  |  | — |  |  | 8,596 |  |
| Investment in Subsidiaries |  | 4,844 |  |  | 404 |  |  | — |  |  | (5,248 | ) |  | — |  |
| Noncurrent Assets |  | 100 |  |  | 2,349 |  |  | 110 |  |  | (78 | ) |  | 2,481 |  |
| Total Assets |  | $ | 9,325 |  |  | $ | 10,031 |  |  | $ | 3,074 |  |  | $ | (10,012 | ) |  | $ | 12,418 |  |
| Current Liabilities |  | $ | 689 |  |  | $ | 3,586 |  |  | $ | 1,846 |  |  | $ | (4,686 | ) |  | $ | 1,435 |  |
| Noncurrent Liabilities |  | 533 |  |  | 1,966 |  |  | 459 |  |  | (78 | ) |  | 2,880 |  |
| Long-Term Debt |  | 2,136 |  |  | — |  |  | — |  |  | — |  |  | 2,136 |  |
| Member’s Equity |  | 5,967 |  |  | 4,479 |  |  | 769 |  |  | (5,248 | ) |  | 5,967 |  |
| Total Liabilities and Member’s Equity |  | $ | 9,325 |  |  | $ | 10,031 |  |  | $ | 3,074 |  |  | $ | (10,012 | ) |  | $ | 12,418 |  |
| Year Ended December 31, 2017 |  |  |  |  |  |  |  |  |  |  |
| Net Cash Provided By (Used In) Operating Activities |  | $ | (42 | ) |  | $ | 1,185 |  |  | $ | 238 |  |  | $ | (55 | ) |  | $ | 1,326 |  |
| Net Cash Provided By (Used In) Investing Activities |  | $ | 506 |  |  | $ | (448 | ) |  | $ | (525 | ) |  | $ | (765 | ) |  | $ | (1,232 | ) |
| Net Cash Provided By (Used In) Financing Activities |  | $ | (464 | ) |  | $ | (736 | ) |  | $ | 307 |  |  | $ | 820 |  |  | $ | (73 | ) |
|  |  | Power |  | Guarantor Subsidiaries |  | Other Subsidiaries |  | Consolidating Adjustments |  | Total |
|  |  | Millions |
| Year Ended December 31, 2016 |  |  |  |  |  |  |  |  |  |  |
| Operating Revenues |  | $ | — |  |  | $ | 3,971 |  |  | $ | 173 |  |  | $ | (121 | ) |  | $ | 4,023 |  |
| Operating Expenses |  | 8 |  |  | 3,962 |  |  | 161 |  |  | (121 | ) |  | 4,010 |  |
| Operating Income (Loss) |  | (8 | ) |  | 9 |  |  | 12 |  |  | — |  |  | 13 |  |
| Equity Earnings (Losses) of Subsidiaries |  | 36 |  |  | (3 | ) |  | 11 |  |  | (33 | ) |  | 11 |  |
| Other Income |  | 71 |  |  | 120 |  |  | — |  |  | (89 | ) |  | 102 |  |
| Other Deductions |  | (18 | ) |  | (39 | ) |  | — |  |  | — |  |  | (57 | ) |
| Other-Than-Temporary Impairments |  | — |  |  | (28 | ) |  | — |  |  | — |  |  | (28 | ) |
| Interest Expense |  | (115 | ) |  | (40 | ) |  | (18 | ) |  | 89 |  |  | (84 | ) |
| Income Tax Benefit (Expense) |  | 52 |  |  | (11 | ) |  | 20 |  |  | — |  |  | 61 |  |
| Net Income (Loss) |  | $ | 18 |  |  | $ | 8 |  |  | $ | 25 |  |  | $ | (33 | ) |  | $ | 18 |  |
| Comprehensive Income (Loss) |  | $ | 47 |  |  | $ | 50 |  |  | $ | 25 |  |  | $ | (75 | ) |  | $ | 47 |  |
| As of December 31, 2016 |  |  |  |  |  |  |  |  |  |  |
| Current Assets |  | $ | 4,412 |  |  | $ | 1,593 |  |  | $ | 152 |  |  | $ | (4,697 | ) |  | $ | 1,460 |  |
| Property, Plant and Equipment, net |  | 55 |  |  | 6,145 |  |  | 2,320 |  |  | — |  |  | 8,520 |  |
| Investment in Subsidiaries |  | 4,249 |  |  | 344 |  |  | — |  |  | (4,593 | ) |  | — |  |
| Noncurrent Assets |  | 168 |  |  | 2,016 |  |  | 129 |  |  | (100 | ) |  | 2,213 |  |
| Total Assets |  | $ | 8,884 |  |  | $ | 10,098 |  |  | $ | 2,601 |  |  | $ | (9,390 | ) |  | $ | 12,193 |  |
| Current Liabilities |  | $ | 171 |  |  | $ | 3,752 |  |  | $ | 1,454 |  |  | $ | (4,697 | ) |  | $ | 680 |  |
| Noncurrent Liabilities |  | 532 |  |  | 2,398 |  |  | 502 |  |  | (100 | ) |  | 3,332 |  |
| Long-Term Debt |  | 2,382 |  |  | — |  |  | — |  |  | — |  |  | 2,382 |  |
| Member’s Equity |  | 5,799 |  |  | 3,948 |  |  | 645 |  |  | (4,593 | ) |  | 5,799 |  |
| Total Liabilities and Member’s Equity |  | $ | 8,884 |  |  | $ | 10,098 |  |  | $ | 2,601 |  |  | $ | (9,390 | ) |  | $ | 12,193 |  |
| Year Ended December 31, 2016 |  |  |  |  |  |  |  |  |  |  |
| Net Cash Provided By (Used In) Operating Activities |  | $ | 97 |  |  | $ | 1,442 |  |  | $ | 323 |  |  | $ | (607 | ) |  | $ | 1,255 |  |
| Net Cash Provided By (Used In) Investing Activities |  | $ | 60 |  |  | $ | (707 | ) |  | $ | (789 | ) |  | $ | 289 |  |  | $ | (1,147 | ) |
| Net Cash Provided By (Used In) Financing Activities |  | $ | (157 | ) |  | $ | (736 | ) |  | $ | 466 |  |  | $ | 318 |  |  | $ | (109 | ) |
|  |  | Power |  | Guarantor Subsidiaries |  | Other Subsidiaries |  | Consolidating Adjustments |  | Total |
|  |  | Millions |
| Year Ended December 31, 2015 |  |  |  |  |  |  |  |  |  |  |
| Operating Revenues |  | $ | — |  |  | $ | 4,883 |  |  | $ | 179 |  |  | $ | (134 | ) |  | $ | 4,928 |  |
| Operating Expenses |  | 12 |  |  | 3,451 |  |  | 169 |  |  | (134 | ) |  | 3,498 |  |
| Operating Income (Loss) |  | (12 | ) |  | 1,432 |  |  | 10 |  |  | — |  |  | 1,430 |  |
| Equity Earnings (Losses) of Subsidiaries |  | 906 |  |  | (4 | ) |  | 14 |  |  | (902 | ) |  | 14 |  |
| Other Income |  | 48 |  |  | 174 |  |  | — |  |  | (53 | ) |  | 169 |  |
| Other Deductions |  | (27 | ) |  | (45 | ) |  | — |  |  | — |  |  | (72 | ) |
| Other-Than-Temporary Impairments |  | — |  |  | (53 | ) |  | — |  |  | — |  |  | (53 | ) |
| Interest Expense |  | (116 | ) |  | (39 | ) |  | (19 | ) |  | 53 |  |  | (121 | ) |
| Income Tax Benefit (Expense) |  | 57 |  |  | (574 | ) |  | 6 |  |  | — |  |  | (511 | ) |
| Net Income (Loss) |  | $ | 856 |  |  | $ | 891 |  |  | $ | 11 |  |  | $ | (902 | ) |  | $ | 856 |  |
| Comprehensive Income (Loss) |  | $ | 844 |  |  | $ | 855 |  |  | $ | 11 |  |  | $ | (866 | ) |  | $ | 844 |  |
| Year Ended December 31, 2015 |  |  |  |  |  |  |  |  |  |  |
| Net Cash Provided By (Used In) Operating Activities |  | $ | 571 |  |  | $ | 2,089 |  |  | $ | 80 |  |  | $ | (1,034 | ) |  | $ | 1,706 |  |
| Net Cash Provided By (Used In) Investing Activities |  | $ | (366 | ) |  | $ | (1,519 | ) |  | $ | (430 | ) |  | $ | 1,314 |  |  | $ | (1,001 | ) |
| Net Cash Provided By (Used In) Financing Activities |  | $ | (205 | ) |  | $ | (571 | ) |  | $ | 354 |  |  | $ | (280 | ) |  | $ | (702 | ) |

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