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Guarantees of Debt | 12 Months Ended
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Dec. 31, 2018
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, 2018 and 2017 and for the years ended December 31, 2018, 2017 and 2016.
|  |  | Power |  | Guarantor Subsidiaries |  | Other Subsidiaries |  | Consolidating Adjustments |  | Total |
|  |  | Millions |
| Year Ended December 31, 2018 |  |  |  |  |  |  |  |  |  |  |
| Operating Revenues |  | $ | — |  |  | $ | 4,078 |  |  | $ | 224 |  |  | $ | (156 | ) |  | $ | 4,146 |  |
| Operating Expenses |  | 14 |  |  | 3,460 |  |  | 232 |  |  | (156 | ) |  | 3,550 |  |
| Operating Income (Loss) |  | (14 | ) |  | 618 |  |  | (8 | ) |  | — |  |  | 596 |  |
| Equity Earnings (Losses) of Subsidiaries |  | 406 |  |  | (28 | ) |  | 15 |  |  | (378 | ) |  | 15 |  |
| Net Gains (Losses) on Trust Investments |  | (1 | ) |  | (139 | ) |  | — |  |  | — |  |  | (140 | ) |
| Other Income (Deductions) |  | 135 |  |  | 166 |  |  | — |  |  | (280 | ) |  | 21 |  |
| Non-Operating Pension and OPEB Credits (Costs) |  | — |  |  | 13 |  |  | 2 |  |  | — |  |  | 15 |  |
| Interest Expense |  | (230 | ) |  | (96 | ) |  | (30 | ) |  | 280 |  |  | (76 | ) |
| Income Tax Benefit (Expense) |  | 69 |  |  | (143 | ) |  | 8 |  |  | — |  |  | (66 | ) |
| Net Income (Loss) |  | $ | 365 |  |  | $ | 391 |  |  | $ | (13 | ) |  | $ | (378 | ) |  | $ | 365 |  |
| Comprehensive Income (Loss) |  | $ | 393 |  |  | $ | 379 |  |  | $ | (13 | ) |  | $ | (366 | ) |  | $ | 393 |  |
| As of December 31, 2018 |  |  |  |  |  |  |  |  |  |  |
| Current Assets |  | $ | 4,317 |  |  | $ | 1,479 |  |  | $ | 304 |  |  | $ | (4,593 | ) |  | $ | 1,507 |  |
| Property, Plant and Equipment, net |  | 49 |  |  | 4,971 |  |  | 3,822 |  |  | — |  |  | 8,842 |  |
| Investment in Subsidiaries |  | 5,062 |  |  | 1,107 |  |  | — |  |  | (6,169 | ) |  | — |  |
| Noncurrent Assets |  | 273 |  |  | 2,109 |  |  | 101 |  |  | (238 | ) |  | 2,245 |  |
| Total Assets |  | $ | 9,701 |  |  | $ | 9,666 |  |  | $ | 4,227 |  |  | $ | (11,000 | ) |  | $ | 12,594 |  |
| Current Liabilities |  | $ | 437 |  |  | $ | 2,971 |  |  | $ | 2,027 |  |  | $ | (4,593 | ) |  | $ | 842 |  |
| Noncurrent Liabilities |  | 513 |  |  | 1,996 |  |  | 730 |  |  | (238 | ) |  | 3,001 |  |
| Long-Term Debt |  | 2,791 |  |  | — |  |  | — |  |  | — |  |  | 2,791 |  |
| Member’s Equity |  | 5,960 |  |  | 4,699 |  |  | 1,470 |  |  | (6,169 | ) |  | 5,960 |  |
| Total Liabilities and Member’s Equity |  | $ | 9,701 |  |  | $ | 9,666 |  |  | $ | 4,227 |  |  | $ | (11,000 | ) |  | $ | 12,594 |  |
| Year Ended December 31, 2018 |  |  |  |  |  |  |  |  |  |  |
| Net Cash Provided By (Used In) Operating Activities |  | $ | (74 | ) |  | $ | 1,007 |  |  | $ | 42 |  |  | $ | 109 |  |  | $ | 1,084 |  |
| Net Cash Provided By (Used In) Investing Activities |  | $ | (402 | ) |  | $ | (1,034 | ) |  | $ | (406 | ) |  | $ | 791 |  |  | $ | (1,051 | ) |
| Net Cash Provided By (Used In) Financing Activities |  | $ | 476 |  |  | $ | 27 |  |  | $ | 354 |  |  | $ | (900 | ) |  | $ | (43 | ) |
|  |  | Power |  | Guarantor Subsidiaries |  | Other Subsidiaries |  | Consolidating Adjustments |  | Total |
|  |  | Millions |
| Year Ended December 31, 2017 |  |  |  |  |  |  |  |  |  |  |
| Operating Revenues |  | $ | — |  |  | $ | 3,821 |  |  | $ | 174 |  |  | $ | (135 | ) |  | $ | 3,860 |  |
| Operating Expenses |  | 8 |  |  | 4,159 |  |  | 195 |  |  | (135 | ) |  | 4,227 |  |
| Operating Income (Loss) |  | (8 | ) |  | (338 | ) |  | (21 | ) |  | — |  |  | (367 | ) |
| Equity Earnings (Losses) of Subsidiaries |  | 567 |  |  | 60 |  |  | 14 |  |  | (627 | ) |  | 14 |  |
| Net Gains (Losses) on Trust Investments |  | 3 |  |  | 122 |  |  | — |  |  | — |  |  | 125 |  |
| Other Income (Deductions) |  | 71 |  |  | 91 |  |  | 2 |  |  | (144 | ) |  | 20 |  |
| Non-Operating Pension and OPEB Credits (Costs) |  | — |  |  | 8 |  |  | — |  |  | — |  |  | 8 |  |
| 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 |  | $ | — |  |  | $ | 3,809 |  |  | $ | 173 |  |  | $ | (121 | ) |  | $ | 3,861 |  |
| Operating Expenses |  | 8 |  |  | 3,796 |  |  | 161 |  |  | (121 | ) |  | 3,844 |  |
| Operating Income (Loss) |  | (8 | ) |  | 13 |  |  | 12 |  |  | — |  |  | 17 |  |
| Equity Earnings (Losses) of Subsidiaries |  | 36 |  |  | (3 | ) |  | 11 |  |  | (33 | ) |  | 11 |  |
| Net Gains (Losses) on Trust Investments |  | 1 |  |  | (7 | ) |  | — |  |  | — |  |  | (6 | ) |
| Other Income (Deductions) |  | 52 |  |  | 60 |  |  | — |  |  | (89 | ) |  | 23 |  |
| Non-Operating Pension and OPEB Credits (Costs) |  | — |  |  | (4 | ) |  | — |  |  | — |  |  | (4 | ) |
| 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 |  |
| 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 [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, 2018 and 2017 and for the years ended December 31, 2018, 2017 and 2016.
|  |  | Power |  | Guarantor Subsidiaries |  | Other Subsidiaries |  | Consolidating Adjustments |  | Total |
|  |  | Millions |
| Year Ended December 31, 2018 |  |  |  |  |  |  |  |  |  |  |
| Operating Revenues |  | $ | — |  |  | $ | 4,078 |  |  | $ | 224 |  |  | $ | (156 | ) |  | $ | 4,146 |  |
| Operating Expenses |  | 14 |  |  | 3,460 |  |  | 232 |  |  | (156 | ) |  | 3,550 |  |
| Operating Income (Loss) |  | (14 | ) |  | 618 |  |  | (8 | ) |  | — |  |  | 596 |  |
| Equity Earnings (Losses) of Subsidiaries |  | 406 |  |  | (28 | ) |  | 15 |  |  | (378 | ) |  | 15 |  |
| Net Gains (Losses) on Trust Investments |  | (1 | ) |  | (139 | ) |  | — |  |  | — |  |  | (140 | ) |
| Other Income (Deductions) |  | 135 |  |  | 166 |  |  | — |  |  | (280 | ) |  | 21 |  |
| Non-Operating Pension and OPEB Credits (Costs) |  | — |  |  | 13 |  |  | 2 |  |  | — |  |  | 15 |  |
| Interest Expense |  | (230 | ) |  | (96 | ) |  | (30 | ) |  | 280 |  |  | (76 | ) |
| Income Tax Benefit (Expense) |  | 69 |  |  | (143 | ) |  | 8 |  |  | — |  |  | (66 | ) |
| Net Income (Loss) |  | $ | 365 |  |  | $ | 391 |  |  | $ | (13 | ) |  | $ | (378 | ) |  | $ | 365 |  |
| Comprehensive Income (Loss) |  | $ | 393 |  |  | $ | 379 |  |  | $ | (13 | ) |  | $ | (366 | ) |  | $ | 393 |  |
| As of December 31, 2018 |  |  |  |  |  |  |  |  |  |  |
| Current Assets |  | $ | 4,317 |  |  | $ | 1,479 |  |  | $ | 304 |  |  | $ | (4,593 | ) |  | $ | 1,507 |  |
| Property, Plant and Equipment, net |  | 49 |  |  | 4,971 |  |  | 3,822 |  |  | — |  |  | 8,842 |  |
| Investment in Subsidiaries |  | 5,062 |  |  | 1,107 |  |  | — |  |  | (6,169 | ) |  | — |  |
| Noncurrent Assets |  | 273 |  |  | 2,109 |  |  | 101 |  |  | (238 | ) |  | 2,245 |  |
| Total Assets |  | $ | 9,701 |  |  | $ | 9,666 |  |  | $ | 4,227 |  |  | $ | (11,000 | ) |  | $ | 12,594 |  |
| Current Liabilities |  | $ | 437 |  |  | $ | 2,971 |  |  | $ | 2,027 |  |  | $ | (4,593 | ) |  | $ | 842 |  |
| Noncurrent Liabilities |  | 513 |  |  | 1,996 |  |  | 730 |  |  | (238 | ) |  | 3,001 |  |
| Long-Term Debt |  | 2,791 |  |  | — |  |  | — |  |  | — |  |  | 2,791 |  |
| Member’s Equity |  | 5,960 |  |  | 4,699 |  |  | 1,470 |  |  | (6,169 | ) |  | 5,960 |  |
| Total Liabilities and Member’s Equity |  | $ | 9,701 |  |  | $ | 9,666 |  |  | $ | 4,227 |  |  | $ | (11,000 | ) |  | $ | 12,594 |  |
| Year Ended December 31, 2018 |  |  |  |  |  |  |  |  |  |  |
| Net Cash Provided By (Used In) Operating Activities |  | $ | (74 | ) |  | $ | 1,007 |  |  | $ | 42 |  |  | $ | 109 |  |  | $ | 1,084 |  |
| Net Cash Provided By (Used In) Investing Activities |  | $ | (402 | ) |  | $ | (1,034 | ) |  | $ | (406 | ) |  | $ | 791 |  |  | $ | (1,051 | ) |
| Net Cash Provided By (Used In) Financing Activities |  | $ | 476 |  |  | $ | 27 |  |  | $ | 354 |  |  | $ | (900 | ) |  | $ | (43 | ) |
|  |  | Power |  | Guarantor Subsidiaries |  | Other Subsidiaries |  | Consolidating Adjustments |  | Total |
|  |  | Millions |
| Year Ended December 31, 2017 |  |  |  |  |  |  |  |  |  |  |
| Operating Revenues |  | $ | — |  |  | $ | 3,821 |  |  | $ | 174 |  |  | $ | (135 | ) |  | $ | 3,860 |  |
| Operating Expenses |  | 8 |  |  | 4,159 |  |  | 195 |  |  | (135 | ) |  | 4,227 |  |
| Operating Income (Loss) |  | (8 | ) |  | (338 | ) |  | (21 | ) |  | — |  |  | (367 | ) |
| Equity Earnings (Losses) of Subsidiaries |  | 567 |  |  | 60 |  |  | 14 |  |  | (627 | ) |  | 14 |  |
| Net Gains (Losses) on Trust Investments |  | 3 |  |  | 122 |  |  | — |  |  | — |  |  | 125 |  |
| Other Income (Deductions) |  | 71 |  |  | 91 |  |  | 2 |  |  | (144 | ) |  | 20 |  |
| Non-Operating Pension and OPEB Credits (Costs) |  | — |  |  | 8 |  |  | — |  |  | — |  |  | 8 |  |
| 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 |  | $ | — |  |  | $ | 3,809 |  |  | $ | 173 |  |  | $ | (121 | ) |  | $ | 3,861 |  |
| Operating Expenses |  | 8 |  |  | 3,796 |  |  | 161 |  |  | (121 | ) |  | 3,844 |  |
| Operating Income (Loss) |  | (8 | ) |  | 13 |  |  | 12 |  |  | — |  |  | 17 |  |
| Equity Earnings (Losses) of Subsidiaries |  | 36 |  |  | (3 | ) |  | 11 |  |  | (33 | ) |  | 11 |  |
| Net Gains (Losses) on Trust Investments |  | 1 |  |  | (7 | ) |  | — |  |  | — |  |  | (6 | ) |
| Other Income (Deductions) |  | 52 |  |  | 60 |  |  | — |  |  | (89 | ) |  | 23 |  |
| Non-Operating Pension and OPEB Credits (Costs) |  | — |  |  | (4 | ) |  | — |  |  | — |  |  | (4 | ) |
| 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 |  |
| 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 | ) |

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