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Accumulated Other Comprehensive Income (Loss), Net of Tax | 9 Months Ended
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Sep. 30, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items] |
Accumulated Other Comprehensive Income (Loss), Net of Tax | Accumulated Other Comprehensive Income (Loss), Net of Tax
| PSEG |  | Other Comprehensive Income (Loss) |
|  |  | Three Months Ended September 30, 2017 |
| Accumulated Other Comprehensive Income (Loss) |  | Cash Flow Hedges |  | Pension and OPEB Plans |  | Available-for-Sale Securities |  | Total |
|  |  | Millions |
| Balance as of June 30, 2017 |  | $ | 2 |  |  | $ | (386 | ) |  | $ | 158 |  |  | $ | (226 | ) |
| Other Comprehensive Income before Reclassifications |  | — |  |  | — |  |  | 25 |  |  | 25 |  |
| Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | (1 | ) |  | 6 |  |  | (8 | ) |  | (3 | ) |
| Net Current Period Other Comprehensive Income (Loss) |  | (1 | ) |  | 6 |  |  | 17 |  |  | 22 |  |
| Balance as of September 30, 2017 |  | $ | 1 |  |  | $ | (380 | ) |  | $ | 175 |  |  | $ | (204 | ) |
| PSEG |  | Other Comprehensive Income (Loss) |
|  |  | Three Months Ended September 30, 2016 |
| Accumulated Other Comprehensive Income (Loss) |  | Cash Flow Hedges |  | Pension and OPEB Plans |  | Available-for-Sale Securities |  | Total |
|  |  | Millions |
| Balance as of June 30, 2016 |  | $ | 1 |  |  | $ | (370 | ) |  | $ | 117 |  |  | $ | (252 | ) |
| Other Comprehensive Income before Reclassifications |  | 1 |  |  | — |  |  | 26 |  |  | 27 |  |
| Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | — |  |  | 9 |  |  | (2 | ) |  | 7 |  |
| Net Current Period Other Comprehensive Income (Loss) |  | 1 |  |  | 9 |  |  | 24 |  |  | 34 |  |
| Balance as of September 30, 2016 |  | $ | 2 |  |  | $ | (361 | ) |  | $ | 141 |  |  | $ | (218 | ) |
| PSEG |  | Other Comprehensive Income (Loss) |
|  |  | Nine Months Ended September 30, 2017 |
| Accumulated Other Comprehensive Income (Loss) |  | Cash Flow Hedges |  | Pension and OPEB Plans |  | Available-for-Sale Securities |  | Total |
|  |  | Millions |
| Balance as of December 31, 2016 |  | $ | 2 |  |  | $ | (398 | ) |  | $ | 133 |  |  | $ | (263 | ) |
| Other Comprehensive Income before Reclassifications |  | — |  |  | — |  |  | 78 |  |  | 78 |  |
| Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | (1 | ) |  | 18 |  |  | (36 | ) |  | (19 | ) |
| Net Current Period Other Comprehensive Income (Loss) |  | (1 | ) |  | 18 |  |  | 42 |  |  | 59 |  |
| Balance as of September 30, 2017 |  | $ | 1 |  |  | $ | (380 | ) |  | $ | 175 |  |  | $ | (204 | ) |
| PSEG |  | Other Comprehensive Income (Loss) |
|  |  | Nine Months Ended September 30, 2016 |
| Accumulated Other Comprehensive Income (Loss) |  | Cash Flow Hedges |  | Pension and OPEB Plans |  | Available-for-Sale Securities |  | Total |
|  |  | Millions |
| Balance as of December 31, 2015 |  | $ | — |  |  | $ | (386 | ) |  | $ | 91 |  |  | $ | (295 | ) |
| Other Comprehensive Income before Reclassifications |  | 2 |  |  | — |  |  | 44 |  |  | 46 |  |
| Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | — |  |  | 25 |  |  | 6 |  |  | 31 |  |
| Net Current Period Other Comprehensive Income (Loss) |  | 2 |  |  | 25 |  |  | 50 |  |  | 77 |  |
| Balance as of September 30, 2016 |  | $ | 2 |  |  | $ | (361 | ) |  | $ | 141 |  |  | $ | (218 | ) |
| Power |  | Other Comprehensive Income (Loss) |
|  |  | Three Months Ended September 30, 2017 |
| Accumulated Other Comprehensive Income (Loss) |  | Cash Flow Hedges |  | Pension and OPEB Plans |  | Available-for-Sale Securities |  | Total |
|  |  | Millions |
| Balance as of June 30, 2017 |  | $ | — |  |  | $ | (330 | ) |  | $ | 158 |  |  | $ | (172 | ) |
| Other Comprehensive Income before Reclassifications |  | — |  |  | — |  |  | 24 |  |  | 24 |  |
| Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | — |  |  | 5 |  |  | (9 | ) |  | (4 | ) |
| Net Current Period Other Comprehensive Income (Loss) |  | — |  |  | 5 |  |  | 15 |  |  | 20 |  |
| Balance as of September 30, 2017 |  | $ | — |  |  | $ | (325 | ) |  | $ | 173 |  |  | $ | (152 | ) |
| Power |  | Other Comprehensive Income (Loss) |
|  |  | Three Months Ended September 30, 2016 |
| Accumulated Other Comprehensive Income (Loss) |  | Cash Flow Hedges |  | Pension and OPEB Plans |  | Available-for-Sale Securities |  | Total |
|  |  | Millions |
| Balance as of June 30, 2016 |  | $ | — |  |  | $ | (313 | ) |  | $ | 112 |  |  | $ | (201 | ) |
| Other Comprehensive Income before Reclassifications |  | — |  |  | — |  |  | 24 |  |  | 24 |  |
| Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | — |  |  | 7 |  |  | (2 | ) |  | 5 |  |
| Net Current Period Other Comprehensive Income (Loss) |  | — |  |  | 7 |  |  | 22 |  |  | 29 |  |
| Balance as of September 30, 2016 |  | $ | — |  |  | $ | (306 | ) |  | $ | 134 |  |  | $ | (172 | ) |
| Power |  | Other Comprehensive Income (Loss) |
|  |  | Nine Months Ended September 30, 2017 |
| Accumulated Other Comprehensive Income (Loss) |  | Cash Flow Hedges |  | Pension and OPEB Plans |  | Available-for-Sale Securities |  | Total |
|  |  | Millions |
| Balance as of December 31, 2016 |  | $ | — |  |  | $ | (340 | ) |  | $ | 129 |  |  | $ | (211 | ) |
| Other Comprehensive Income before Reclassifications |  | — |  |  | — |  |  | 74 |  |  | 74 |  |
| Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | — |  |  | 15 |  |  | (30 | ) |  | (15 | ) |
| Net Current Period Other Comprehensive Income (Loss) |  | — |  |  | 15 |  |  | 44 |  |  | 59 |  |
| Balance as of September 30, 2017 |  | $ | — |  |  | $ | (325 | ) |  | $ | 173 |  |  | $ | (152 | ) |
| Power |  | Other Comprehensive Income (Loss) |
|  |  | Nine Months Ended September 30, 2016 |
| Accumulated Other Comprehensive Income (Loss) |  | Cash Flow Hedges |  | Pension and OPEB Plans |  | Available-for-Sale Securities |  | Total |
|  |  | Millions |
| Balance as of December 31, 2015 |  | $ | — |  |  | $ | (327 | ) |  | $ | 87 |  |  | $ | (240 | ) |
| Other Comprehensive Income before Reclassifications |  | — |  |  | — |  |  | 40 |  |  | 40 |  |
| Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | — |  |  | 21 |  |  | 7 |  |  | 28 |  |
| Net Current Period Other Comprehensive Income (Loss) |  | — |  |  | 21 |  |  | 47 |  |  | 68 |  |
| Balance as of September 30, 2016 |  | $ | — |  |  | $ | (306 | ) |  | $ | 134 |  |  | $ | (172 | ) |
| PSEG |  |  | Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) to Income Statement |
|  |  |  | Three Months Ended |  | Nine Months Ended |
| Description of Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | Location of Pre-Tax Amount In Statement of Operations | September 30, 2017 |  | September 30, 2017 |
|  | Pre-Tax Amount |  | Tax (Expense) Benefit |  | After-Tax Amount |  | Pre-Tax Amount |  | Tax (Expense) Benefit |  | After-Tax Amount |
|  |  |  | Millions |
| Cash Flow Hedges |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Interest Rate Swaps |  | Interest Expense | $ | 2 |  |  | $ | (1 | ) |  | $ | 1 |  |  | $ | 2 |  |  | $ | (1 | ) |  | $ | 1 |  |
| Total Cash Flow Hedges |  |  | 2 |  |  | (1 | ) |  | 1 |  |  | 2 |  |  | (1 | ) |  | 1 |  |
| Pension and OPEB Plans |  |  |  |  |  |  |  |  |  |  |  |
| Amortization of Prior Service (Cost) Credit |  | O&M Expense | 3 |  |  | (1 | ) |  | 2 |  |  | 7 |  |  | (3 | ) |  | 4 |  |
| Amortization of Actuarial Loss |  | O&M Expense | (13 | ) |  | 5 |  |  | (8 | ) |  | (37 | ) |  | 15 |  |  | (22 | ) |
| Total Pension and OPEB Plans | (10 | ) |  | 4 |  |  | (6 | ) |  | (30 | ) |  | 12 |  |  | (18 | ) |
| Available-for-Sale Securities |  |  |  |  |  |  |  |  |  |  |  |
| Realized Gains |  | Other Income | 29 |  |  | (15 | ) |  | 14 |  |  | 99 |  |  | (49 | ) |  | 50 |  |
| Realized Losses |  | Other Deductions | (6 | ) |  | 2 |  |  | (4 | ) |  | (19 | ) |  | 9 |  |  | (10 | ) |
| OTTI |  | OTTI | (5 | ) |  | 3 |  |  | (2 | ) |  | (9 | ) |  | 5 |  |  | (4 | ) |
| Total Available-for-Sale Securities | 18 |  |  | (10 | ) |  | 8 |  |  | 71 |  |  | (35 | ) |  | 36 |  |
| Total |  |  | $ | 10 |  |  | $ | (7 | ) |  | $ | 3 |  |  | $ | 43 |  |  | $ | (24 | ) |  | $ | 19 |  |
| PSEG |  |  |  | Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) to Income Statement |
|  |  |  |  | Three Months Ended |  | Nine Months Ended |
| Description of Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | Location of Pre-Tax Amount In Statement of Operations |  | September 30, 2016 |  | September 30, 2016 |
|  |  | Pre-Tax Amount |  | Tax (Expense) Benefit |  | After-Tax Amount |  | Pre-Tax Amount |  | Tax (Expense) Benefit |  | After-Tax Amount |
|  |  |  |  | Millions |
| Pension and OPEB Plans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Amortization of Prior Service (Cost) Credit |  | O&M Expense |  | $ | 3 |  |  | $ | (2 | ) |  | $ | 1 |  |  | $ | 9 |  |  | $ | (4 | ) |  | $ | 5 |  |
| Amortization of Actuarial Loss |  | O&M Expense |  | (17 | ) |  | 7 |  |  | (10 | ) |  | (51 | ) |  | 21 |  |  | (30 | ) |
| Total Pension and OPEB Plans |  | (14 | ) |  | 5 |  |  | (9 | ) |  | (42 | ) |  | 17 |  |  | (25 | ) |
| Available-for-Sale Securities |  |  |  |  |  |  |  |  |  |  |  |  |
| Realized Gains |  | Other Income |  | 13 |  |  | (6 | ) |  | 7 |  |  | 41 |  |  | (20 | ) |  | 21 |  |
| Realized Losses |  | Other Deductions |  | (5 | ) |  | 3 |  |  | (2 | ) |  | (29 | ) |  | 15 |  |  | (14 | ) |
| OTTI |  | OTTI |  | (5 | ) |  | 2 |  |  | (3 | ) |  | (25 | ) |  | 12 |  |  | (13 | ) |
| Total Available-for-Sale Securities |  | 3 |  |  | (1 | ) |  | 2 |  |  | (13 | ) |  | 7 |  |  | (6 | ) |
| Total |  |  |  | $ | (11 | ) |  | $ | 4 |  |  | $ | (7 | ) |  | $ | (55 | ) |  | $ | 24 |  |  | $ | (31 | ) |
| Power |  |  |  | Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) to Income Statement |
|  |  |  |  | Three Months Ended |  | Nine Months Ended |
| Description of Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | Location of Pre-Tax Amount In Statement of Operations |  | September 30, 2017 |  | September 30, 2017 |
|  |  | Pre-Tax Amount |  | Tax (Expense) Benefit |  | After-Tax Amount |  | Pre-Tax Amount |  | Tax (Expense) Benefit |  | After-Tax Amount |
|  |  |  |  | Millions |
| Pension and OPEB Plans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Amortization of Prior Service (Cost) Credit |  | O&M Expense |  | $ | 2 |  |  | $ | (1 | ) |  | $ | 1 |  |  | $ | 6 |  |  | $ | (3 | ) |  | $ | 3 |  |
| Amortization of Actuarial Loss |  | O&M Expense |  | (11 | ) |  | 5 |  |  | (6 | ) |  | (32 | ) |  | 14 |  |  | (18 | ) |
| Total Pension and OPEB Plans |  | (9 | ) |  | 4 |  |  | (5 | ) |  | (26 | ) |  | 11 |  |  | (15 | ) |
| Available-for-Sale Securities |  |  |  |  |  |  |  |  |  |  |  |  |
| Realized Gains |  | Other Income |  | 29 |  |  | (15 | ) |  | 14 |  |  | 86 |  |  | (44 | ) |  | 42 |  |
| Realized Losses |  | Other Deductions |  | (5 | ) |  | 2 |  |  | (3 | ) |  | (15 | ) |  | 7 |  |  | (8 | ) |
| OTTI |  | OTTI |  | (5 | ) |  | 3 |  |  | (2 | ) |  | (9 | ) |  | 5 |  |  | (4 | ) |
| Total Available-for-Sale Securities |  | 19 |  |  | (10 | ) |  | 9 |  |  | 62 |  |  | (32 | ) |  | 30 |  |
| Total |  |  |  | $ | 10 |  |  | $ | (6 | ) |  | $ | 4 |  |  | $ | 36 |  |  | $ | (21 | ) |  | $ | 15 |  |
| Power |  |  |  | Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) to Income Statement |
|  |  |  |  | Three Months Ended |  | Nine Months Ended |
| Description of Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | Location of Pre-Tax Amount In Statement of Operations |  | September 30, 2016 |  | September 30, 2016 |
|  |  | Pre-Tax Amount |  | Tax (Expense) Benefit |  | After-Tax Amount |  | Pre-Tax Amount |  | Tax (Expense) Benefit |  | After-Tax Amount |
|  |  |  |  | Millions |
| Pension and OPEB Plans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Amortization of Prior Service (Cost) Credit |  | O&M Expense |  | $ | 3 |  |  | $ | (1 | ) |  | $ | 2 |  |  | $ | 8 |  |  | $ | (3 | ) |  | $ | 5 |  |
| Amortization of Actuarial Loss |  | O&M Expense |  | (15 | ) |  | 6 |  |  | (9 | ) |  | (44 | ) |  | 18 |  |  | (26 | ) |
| Total Pension and OPEB Plans |  | (12 | ) |  | 5 |  |  | (7 | ) |  | (36 | ) |  | 15 |  |  | (21 | ) |
| Available-for-Sale Securities |  |  |  |  |  |  |  |  |  |  |  |  |
| Realized Gains |  | Other Income |  | 12 |  |  | (5 | ) |  | 7 |  |  | 37 |  |  | (18 | ) |  | 19 |  |
| Realized Losses |  | Other Deductions |  | (4 | ) |  | 2 |  |  | (2 | ) |  | (26 | ) |  | 13 |  |  | (13 | ) |
| OTTI |  | OTTI |  | (5 | ) |  | 2 |  |  | (3 | ) |  | (25 | ) |  | 12 |  |  | (13 | ) |
| Total Available-for-Sale Securities |  | 3 |  |  | (1 | ) |  | 2 |  |  | (14 | ) |  | 7 |  |  | (7 | ) |
| Total |  |  |  | $ | (9 | ) |  | $ | 4 |  |  | $ | (5 | ) |  | $ | (50 | ) |  | $ | 22 |  |  | $ | (28 | ) |
Power [Member] |
Accumulated Other Comprehensive Income (Loss) [Line Items] |
Accumulated Other Comprehensive Income (Loss), Net of Tax | Accumulated Other Comprehensive Income (Loss), Net of Tax
| PSEG |  | Other Comprehensive Income (Loss) |
|  |  | Three Months Ended September 30, 2017 |
| Accumulated Other Comprehensive Income (Loss) |  | Cash Flow Hedges |  | Pension and OPEB Plans |  | Available-for-Sale Securities |  | Total |
|  |  | Millions |
| Balance as of June 30, 2017 |  | $ | 2 |  |  | $ | (386 | ) |  | $ | 158 |  |  | $ | (226 | ) |
| Other Comprehensive Income before Reclassifications |  | — |  |  | — |  |  | 25 |  |  | 25 |  |
| Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | (1 | ) |  | 6 |  |  | (8 | ) |  | (3 | ) |
| Net Current Period Other Comprehensive Income (Loss) |  | (1 | ) |  | 6 |  |  | 17 |  |  | 22 |  |
| Balance as of September 30, 2017 |  | $ | 1 |  |  | $ | (380 | ) |  | $ | 175 |  |  | $ | (204 | ) |
| PSEG |  | Other Comprehensive Income (Loss) |
|  |  | Three Months Ended September 30, 2016 |
| Accumulated Other Comprehensive Income (Loss) |  | Cash Flow Hedges |  | Pension and OPEB Plans |  | Available-for-Sale Securities |  | Total |
|  |  | Millions |
| Balance as of June 30, 2016 |  | $ | 1 |  |  | $ | (370 | ) |  | $ | 117 |  |  | $ | (252 | ) |
| Other Comprehensive Income before Reclassifications |  | 1 |  |  | — |  |  | 26 |  |  | 27 |  |
| Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | — |  |  | 9 |  |  | (2 | ) |  | 7 |  |
| Net Current Period Other Comprehensive Income (Loss) |  | 1 |  |  | 9 |  |  | 24 |  |  | 34 |  |
| Balance as of September 30, 2016 |  | $ | 2 |  |  | $ | (361 | ) |  | $ | 141 |  |  | $ | (218 | ) |
| PSEG |  | Other Comprehensive Income (Loss) |
|  |  | Nine Months Ended September 30, 2017 |
| Accumulated Other Comprehensive Income (Loss) |  | Cash Flow Hedges |  | Pension and OPEB Plans |  | Available-for-Sale Securities |  | Total |
|  |  | Millions |
| Balance as of December 31, 2016 |  | $ | 2 |  |  | $ | (398 | ) |  | $ | 133 |  |  | $ | (263 | ) |
| Other Comprehensive Income before Reclassifications |  | — |  |  | — |  |  | 78 |  |  | 78 |  |
| Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | (1 | ) |  | 18 |  |  | (36 | ) |  | (19 | ) |
| Net Current Period Other Comprehensive Income (Loss) |  | (1 | ) |  | 18 |  |  | 42 |  |  | 59 |  |
| Balance as of September 30, 2017 |  | $ | 1 |  |  | $ | (380 | ) |  | $ | 175 |  |  | $ | (204 | ) |
| PSEG |  | Other Comprehensive Income (Loss) |
|  |  | Nine Months Ended September 30, 2016 |
| Accumulated Other Comprehensive Income (Loss) |  | Cash Flow Hedges |  | Pension and OPEB Plans |  | Available-for-Sale Securities |  | Total |
|  |  | Millions |
| Balance as of December 31, 2015 |  | $ | — |  |  | $ | (386 | ) |  | $ | 91 |  |  | $ | (295 | ) |
| Other Comprehensive Income before Reclassifications |  | 2 |  |  | — |  |  | 44 |  |  | 46 |  |
| Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | — |  |  | 25 |  |  | 6 |  |  | 31 |  |
| Net Current Period Other Comprehensive Income (Loss) |  | 2 |  |  | 25 |  |  | 50 |  |  | 77 |  |
| Balance as of September 30, 2016 |  | $ | 2 |  |  | $ | (361 | ) |  | $ | 141 |  |  | $ | (218 | ) |
| Power |  | Other Comprehensive Income (Loss) |
|  |  | Three Months Ended September 30, 2017 |
| Accumulated Other Comprehensive Income (Loss) |  | Cash Flow Hedges |  | Pension and OPEB Plans |  | Available-for-Sale Securities |  | Total |
|  |  | Millions |
| Balance as of June 30, 2017 |  | $ | — |  |  | $ | (330 | ) |  | $ | 158 |  |  | $ | (172 | ) |
| Other Comprehensive Income before Reclassifications |  | — |  |  | — |  |  | 24 |  |  | 24 |  |
| Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | — |  |  | 5 |  |  | (9 | ) |  | (4 | ) |
| Net Current Period Other Comprehensive Income (Loss) |  | — |  |  | 5 |  |  | 15 |  |  | 20 |  |
| Balance as of September 30, 2017 |  | $ | — |  |  | $ | (325 | ) |  | $ | 173 |  |  | $ | (152 | ) |
| Power |  | Other Comprehensive Income (Loss) |
|  |  | Three Months Ended September 30, 2016 |
| Accumulated Other Comprehensive Income (Loss) |  | Cash Flow Hedges |  | Pension and OPEB Plans |  | Available-for-Sale Securities |  | Total |
|  |  | Millions |
| Balance as of June 30, 2016 |  | $ | — |  |  | $ | (313 | ) |  | $ | 112 |  |  | $ | (201 | ) |
| Other Comprehensive Income before Reclassifications |  | — |  |  | — |  |  | 24 |  |  | 24 |  |
| Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | — |  |  | 7 |  |  | (2 | ) |  | 5 |  |
| Net Current Period Other Comprehensive Income (Loss) |  | — |  |  | 7 |  |  | 22 |  |  | 29 |  |
| Balance as of September 30, 2016 |  | $ | — |  |  | $ | (306 | ) |  | $ | 134 |  |  | $ | (172 | ) |
| Power |  | Other Comprehensive Income (Loss) |
|  |  | Nine Months Ended September 30, 2017 |
| Accumulated Other Comprehensive Income (Loss) |  | Cash Flow Hedges |  | Pension and OPEB Plans |  | Available-for-Sale Securities |  | Total |
|  |  | Millions |
| Balance as of December 31, 2016 |  | $ | — |  |  | $ | (340 | ) |  | $ | 129 |  |  | $ | (211 | ) |
| Other Comprehensive Income before Reclassifications |  | — |  |  | — |  |  | 74 |  |  | 74 |  |
| Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | — |  |  | 15 |  |  | (30 | ) |  | (15 | ) |
| Net Current Period Other Comprehensive Income (Loss) |  | — |  |  | 15 |  |  | 44 |  |  | 59 |  |
| Balance as of September 30, 2017 |  | $ | — |  |  | $ | (325 | ) |  | $ | 173 |  |  | $ | (152 | ) |
| Power |  | Other Comprehensive Income (Loss) |
|  |  | Nine Months Ended September 30, 2016 |
| Accumulated Other Comprehensive Income (Loss) |  | Cash Flow Hedges |  | Pension and OPEB Plans |  | Available-for-Sale Securities |  | Total |
|  |  | Millions |
| Balance as of December 31, 2015 |  | $ | — |  |  | $ | (327 | ) |  | $ | 87 |  |  | $ | (240 | ) |
| Other Comprehensive Income before Reclassifications |  | — |  |  | — |  |  | 40 |  |  | 40 |  |
| Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | — |  |  | 21 |  |  | 7 |  |  | 28 |  |
| Net Current Period Other Comprehensive Income (Loss) |  | — |  |  | 21 |  |  | 47 |  |  | 68 |  |
| Balance as of September 30, 2016 |  | $ | — |  |  | $ | (306 | ) |  | $ | 134 |  |  | $ | (172 | ) |
| PSEG |  |  | Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) to Income Statement |
|  |  |  | Three Months Ended |  | Nine Months Ended |
| Description of Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | Location of Pre-Tax Amount In Statement of Operations | September 30, 2017 |  | September 30, 2017 |
|  | Pre-Tax Amount |  | Tax (Expense) Benefit |  | After-Tax Amount |  | Pre-Tax Amount |  | Tax (Expense) Benefit |  | After-Tax Amount |
|  |  |  | Millions |
| Cash Flow Hedges |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Interest Rate Swaps |  | Interest Expense | $ | 2 |  |  | $ | (1 | ) |  | $ | 1 |  |  | $ | 2 |  |  | $ | (1 | ) |  | $ | 1 |  |
| Total Cash Flow Hedges |  |  | 2 |  |  | (1 | ) |  | 1 |  |  | 2 |  |  | (1 | ) |  | 1 |  |
| Pension and OPEB Plans |  |  |  |  |  |  |  |  |  |  |  |
| Amortization of Prior Service (Cost) Credit |  | O&M Expense | 3 |  |  | (1 | ) |  | 2 |  |  | 7 |  |  | (3 | ) |  | 4 |  |
| Amortization of Actuarial Loss |  | O&M Expense | (13 | ) |  | 5 |  |  | (8 | ) |  | (37 | ) |  | 15 |  |  | (22 | ) |
| Total Pension and OPEB Plans | (10 | ) |  | 4 |  |  | (6 | ) |  | (30 | ) |  | 12 |  |  | (18 | ) |
| Available-for-Sale Securities |  |  |  |  |  |  |  |  |  |  |  |
| Realized Gains |  | Other Income | 29 |  |  | (15 | ) |  | 14 |  |  | 99 |  |  | (49 | ) |  | 50 |  |
| Realized Losses |  | Other Deductions | (6 | ) |  | 2 |  |  | (4 | ) |  | (19 | ) |  | 9 |  |  | (10 | ) |
| OTTI |  | OTTI | (5 | ) |  | 3 |  |  | (2 | ) |  | (9 | ) |  | 5 |  |  | (4 | ) |
| Total Available-for-Sale Securities | 18 |  |  | (10 | ) |  | 8 |  |  | 71 |  |  | (35 | ) |  | 36 |  |
| Total |  |  | $ | 10 |  |  | $ | (7 | ) |  | $ | 3 |  |  | $ | 43 |  |  | $ | (24 | ) |  | $ | 19 |  |
| PSEG |  |  |  | Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) to Income Statement |
|  |  |  |  | Three Months Ended |  | Nine Months Ended |
| Description of Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | Location of Pre-Tax Amount In Statement of Operations |  | September 30, 2016 |  | September 30, 2016 |
|  |  | Pre-Tax Amount |  | Tax (Expense) Benefit |  | After-Tax Amount |  | Pre-Tax Amount |  | Tax (Expense) Benefit |  | After-Tax Amount |
|  |  |  |  | Millions |
| Pension and OPEB Plans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Amortization of Prior Service (Cost) Credit |  | O&M Expense |  | $ | 3 |  |  | $ | (2 | ) |  | $ | 1 |  |  | $ | 9 |  |  | $ | (4 | ) |  | $ | 5 |  |
| Amortization of Actuarial Loss |  | O&M Expense |  | (17 | ) |  | 7 |  |  | (10 | ) |  | (51 | ) |  | 21 |  |  | (30 | ) |
| Total Pension and OPEB Plans |  | (14 | ) |  | 5 |  |  | (9 | ) |  | (42 | ) |  | 17 |  |  | (25 | ) |
| Available-for-Sale Securities |  |  |  |  |  |  |  |  |  |  |  |  |
| Realized Gains |  | Other Income |  | 13 |  |  | (6 | ) |  | 7 |  |  | 41 |  |  | (20 | ) |  | 21 |  |
| Realized Losses |  | Other Deductions |  | (5 | ) |  | 3 |  |  | (2 | ) |  | (29 | ) |  | 15 |  |  | (14 | ) |
| OTTI |  | OTTI |  | (5 | ) |  | 2 |  |  | (3 | ) |  | (25 | ) |  | 12 |  |  | (13 | ) |
| Total Available-for-Sale Securities |  | 3 |  |  | (1 | ) |  | 2 |  |  | (13 | ) |  | 7 |  |  | (6 | ) |
| Total |  |  |  | $ | (11 | ) |  | $ | 4 |  |  | $ | (7 | ) |  | $ | (55 | ) |  | $ | 24 |  |  | $ | (31 | ) |
| Power |  |  |  | Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) to Income Statement |
|  |  |  |  | Three Months Ended |  | Nine Months Ended |
| Description of Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | Location of Pre-Tax Amount In Statement of Operations |  | September 30, 2017 |  | September 30, 2017 |
|  |  | Pre-Tax Amount |  | Tax (Expense) Benefit |  | After-Tax Amount |  | Pre-Tax Amount |  | Tax (Expense) Benefit |  | After-Tax Amount |
|  |  |  |  | Millions |
| Pension and OPEB Plans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Amortization of Prior Service (Cost) Credit |  | O&M Expense |  | $ | 2 |  |  | $ | (1 | ) |  | $ | 1 |  |  | $ | 6 |  |  | $ | (3 | ) |  | $ | 3 |  |
| Amortization of Actuarial Loss |  | O&M Expense |  | (11 | ) |  | 5 |  |  | (6 | ) |  | (32 | ) |  | 14 |  |  | (18 | ) |
| Total Pension and OPEB Plans |  | (9 | ) |  | 4 |  |  | (5 | ) |  | (26 | ) |  | 11 |  |  | (15 | ) |
| Available-for-Sale Securities |  |  |  |  |  |  |  |  |  |  |  |  |
| Realized Gains |  | Other Income |  | 29 |  |  | (15 | ) |  | 14 |  |  | 86 |  |  | (44 | ) |  | 42 |  |
| Realized Losses |  | Other Deductions |  | (5 | ) |  | 2 |  |  | (3 | ) |  | (15 | ) |  | 7 |  |  | (8 | ) |
| OTTI |  | OTTI |  | (5 | ) |  | 3 |  |  | (2 | ) |  | (9 | ) |  | 5 |  |  | (4 | ) |
| Total Available-for-Sale Securities |  | 19 |  |  | (10 | ) |  | 9 |  |  | 62 |  |  | (32 | ) |  | 30 |  |
| Total |  |  |  | $ | 10 |  |  | $ | (6 | ) |  | $ | 4 |  |  | $ | 36 |  |  | $ | (21 | ) |  | $ | 15 |  |
| Power |  |  |  | Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) to Income Statement |
|  |  |  |  | Three Months Ended |  | Nine Months Ended |
| Description of Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) |  | Location of Pre-Tax Amount In Statement of Operations |  | September 30, 2016 |  | September 30, 2016 |
|  |  | Pre-Tax Amount |  | Tax (Expense) Benefit |  | After-Tax Amount |  | Pre-Tax Amount |  | Tax (Expense) Benefit |  | After-Tax Amount |
|  |  |  |  | Millions |
| Pension and OPEB Plans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Amortization of Prior Service (Cost) Credit |  | O&M Expense |  | $ | 3 |  |  | $ | (1 | ) |  | $ | 2 |  |  | $ | 8 |  |  | $ | (3 | ) |  | $ | 5 |  |
| Amortization of Actuarial Loss |  | O&M Expense |  | (15 | ) |  | 6 |  |  | (9 | ) |  | (44 | ) |  | 18 |  |  | (26 | ) |
| Total Pension and OPEB Plans |  | (12 | ) |  | 5 |  |  | (7 | ) |  | (36 | ) |  | 15 |  |  | (21 | ) |
| Available-for-Sale Securities |  |  |  |  |  |  |  |  |  |  |  |  |
| Realized Gains |  | Other Income |  | 12 |  |  | (5 | ) |  | 7 |  |  | 37 |  |  | (18 | ) |  | 19 |  |
| Realized Losses |  | Other Deductions |  | (4 | ) |  | 2 |  |  | (2 | ) |  | (26 | ) |  | 13 |  |  | (13 | ) |
| OTTI |  | OTTI |  | (5 | ) |  | 2 |  |  | (3 | ) |  | (25 | ) |  | 12 |  |  | (13 | ) |
| Total Available-for-Sale Securities |  | 3 |  |  | (1 | ) |  | 2 |  |  | (14 | ) |  | 7 |  |  | (7 | ) |
| Total |  |  |  | $ | (9 | ) |  | $ | 4 |  |  | $ | (5 | ) |  | $ | (50 | ) |  | $ | 22 |  |  | $ | (28 | ) |

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