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Income Taxes (Reconciliation Of Reported Income Tax Expense) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Jun. 30, 2018 | [1] | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Income Taxes [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Income | $ 199 | [1] | $ 412 |  |  | $ 558 | [1] | $ 956 | [1] | $ 395 | $ 109 | [1] | $ 114 | [1] | $ 269 |  |  |
Net Income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,438 | $ 1,574 | $ 887
Federal |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (97) | 86 | (74)
State |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 83 | (31) | 61
Total Current |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (14) | 55 | (13)
Federal |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 373 | (482) | 311
State |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 71 | 92 | 28
Total Deferred |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 444 | (390) | 339
Investment tax credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (13) | 29 | 85
Total Income Tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 417 | (306) | 411
Pre-Tax Income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,855 | 1,268 | 1,298
Tax Computed at Statutory Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 390 | 444 | 454
State Income Taxes (net of federal income tax) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 123 | 36 | 56
Uncertain Tax Positions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (24) | (3) | (31)
Manufacturing Deduction |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | (13) | (17)
Nuclear Decommissioning Trust |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (13) | 19 | 3
Plant-Related Items |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (10) | (23) | (20)
Tax Credits |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (16) | (22) | (25)
Effective Income Tax Rate Reconciliation, Tax Settlement, Domestic, Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 6 | 0
Tax Adjustment Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (30) | 0 | 0
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 | (755) | 0
Other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (6) | 5 | (9)
Sub-Total |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 27 | (750) | (43)
Income Tax Provision |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 417 | $ (306) | $ 411
Effective income tax rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 22.50% | (24.10%) | 31.70%
PSE&G [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Income | 239 |  | 278 | $ 231 |  | 319 |  | 220 |  | 246 | 208 |  | 299 |  |  |  |  |
Net Income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,067 | $ 973 | $ 889
Federal |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (62) | (52) | (153)
State |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 | (1) | 10
Total Current |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (61) | (53) | (143)
Federal |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 287 | 492 | 551
State |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 122 | 129 | 102
Total Deferred |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 409 | 621 | 653
Investment tax credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (4) | (5) | 5
Total Income Tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 344 | 563 | 515
Pre-Tax Income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,411 | 1,536 | 1,404
Tax Computed at Statutory Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 296 | 538 | 491
State Income Taxes (net of federal income tax) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 98 | 83 | 72
Uncertain Tax Positions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1) | (9) | (18)
Plant-Related Items |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (10) | (23) | (20)
Tax Credits |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (8) | (9) | (7)
Tax Adjustment Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (30) | 0 | 0
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | (10) | 0
Other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1) | (7) | (3)
Sub-Total |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 48 | 25 | 24
Income Tax Provision |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 344 | $ 563 | $ 515
Effective income tax rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 24.40% | 36.70% | 36.70%
Power [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Income | $ (35) | [1] | $ 125 | $ 41 | [1] | $ 234 | [1] | $ 610 | [1] | $ 136 | $ (97) | [1] | $ (170) | [1] |  |  |  |
Net Income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 365 | $ 479 | $ 18
Federal |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (164) | 95 | 107
State |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 24 | (17) | 40
Total Current |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (140) | 78 | 147
Federal |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 214 | (804) | (222)
State |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 | (37) | (68)
Total Deferred |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 215 | (841) | (290)
Investment tax credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (9) | 34 | 82
Total Income Tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 66 | (729) | (61)
Pre-Tax Income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 431 | (250) | (43)
Tax Computed at Statutory Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 91 | (88) | (15)
State Income Taxes (net of federal income tax) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 21 | (36) | (18)
Uncertain Tax Positions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (24) | 7 | 9
Manufacturing Deduction |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | (13) | (17)
Nuclear Decommissioning Trust |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (13) | 19 | 3
Tax Credits |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (7) | (12) | (18)
Effective Income Tax Rate Reconciliation, Tax Settlement, Domestic, Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 1 | 0
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1) | (610) | 0
Other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1) | 3 | (5)
Sub-Total |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (25) | (641) | (46)
Income Tax Provision |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 66 | $ (729) | $ (61)
Effective income tax rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 15.30% | 291.60% | 141.90%
[1] | The increases in Operating Income at PSEG consolidated and Power in the first and second quarters of 2018 as compared to the same quarters in 2017 were primarily due to higher costs in 2017 related to closing the coal/gas Hudson and Mercer units, which were fully depreciated as of June 1, 2017. The increases in Operating Income at PSEG consolidated and Power in the fourth quarter 2018 as compared to the same quarter in 2017 were primarily due to lower MTM losses and a gain on the sale of the Hudson and Mercer units.The decreases in Net Income at PSEG consolidated and Power in the fourth quarter 2018 as compared to the same quarter in 2017 also reflected the impact of the one-time benefit recorded in December 2017 as a result of the remeasurement of deferred tax balances and the inclusion in 2018 of net unrealized losses on equity investments in the NDT Fund in accordance with new accounting guidance.

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