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Income Taxes (Reconciliation Of Reported Income Tax Expense) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Income Taxes [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Net Income | $ (98) | [1] | $ 327 | $ 187 | $ 471 | $ 309 | [1] | $ 439 | $ 345 | $ 586 |  |  |
Net Income |  |  |  |  |  |  |  |  |  |  | $ 887 | $ 1,679 | $ 1,518
Federal |  |  |  |  |  |  |  |  |  |  | (74) | 243 | 335
State |  |  |  |  |  |  |  |  |  |  | 61 | 85 | 58
Total Current |  |  |  |  |  |  |  |  |  |  | (13) | 328 | 393
Federal |  |  |  |  |  |  |  |  |  |  | 311 | 540 | 262
State |  |  |  |  |  |  |  |  |  |  | 28 | 104 | 260
Total Deferred |  |  |  |  |  |  |  |  |  |  | 339 | 644 | 522
Investment tax credit |  |  |  |  |  |  |  |  |  |  | 85 | 29 | 23
Total Income Tax |  |  |  |  |  |  |  |  |  |  | 411 | 1,001 | 938
Pre-Tax Income |  |  |  |  |  |  |  |  |  |  | 1,298 | 2,680 | 2,456
Tax Computed at Statutory Rate @ 35% |  |  |  |  |  |  |  |  |  |  | 454 | 938 | 860
State Income Taxes (net of federal income tax) |  |  |  |  |  |  |  |  |  |  | 56 | 129 | 145
Uncertain Tax Positions |  |  |  |  |  |  |  |  |  |  | (31) | 7 | (9)
Manufacturing Deduction |  |  |  |  |  |  |  |  |  |  | (17) | (10) | (16)
Nuclear Decommissioning Trust |  |  |  |  |  |  |  |  |  |  | 3 | 7 | 14
Plant-Related Items |  |  |  |  |  |  |  |  |  |  | (20) | (20) | (13)
Tax Credits |  |  |  |  |  |  |  |  |  |  | (25) | (13) | (14)
Audit Settlement |  |  |  |  |  |  |  |  |  |  | 0 | 0 | (12)
Nuclear Decommissiong Tax Carryback |  |  |  |  |  |  |  |  |  |  | 0 | (33) | 0
Other |  |  |  |  |  |  |  |  |  |  | (9) | (4) | (17)
Sub-Total |  |  |  |  |  |  |  |  |  |  | (43) | 63 | 78
Income Tax Provision |  |  |  |  |  |  |  |  |  |  | $ 411 | $ 1,001 | $ 938
Effective income tax rate |  |  |  |  |  |  |  |  |  |  | 31.70% | 37.40% | 38.20%
PSE&G [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Net Income | 193 |  | 255 | 179 | 262 | 156 |  | 222 | 167 | 242 |  |  |
Net Income |  |  |  |  |  |  |  |  |  |  | $ 889 | $ 787 | $ 725
Federal |  |  |  |  |  |  |  |  |  |  | (153) | 32 | 124
State |  |  |  |  |  |  |  |  |  |  | 10 | 52 | 16
Total Current |  |  |  |  |  |  |  |  |  |  | (143) | 84 | 140
Federal |  |  |  |  |  |  |  |  |  |  | 551 | 325 | 214
State |  |  |  |  |  |  |  |  |  |  | 102 | 52 | 84
Total Deferred |  |  |  |  |  |  |  |  |  |  | 653 | 377 | 298
Investment tax credit |  |  |  |  |  |  |  |  |  |  | 5 | 9 | 11
Total Income Tax |  |  |  |  |  |  |  |  |  |  | 515 | 470 | 449
Pre-Tax Income |  |  |  |  |  |  |  |  |  |  | 1,404 | 1,257 | 1,174
Tax Computed at Statutory Rate @ 35% |  |  |  |  |  |  |  |  |  |  | 491 | 440 | 411
State Income Taxes (net of federal income tax) |  |  |  |  |  |  |  |  |  |  | 72 | 67 | 65
Uncertain Tax Positions |  |  |  |  |  |  |  |  |  |  | (18) | (14) | 0
Plant-Related Items |  |  |  |  |  |  |  |  |  |  | (20) | (20) | (13)
Tax Credits |  |  |  |  |  |  |  |  |  |  | (7) | (6) | (7)
Audit Settlement |  |  |  |  |  |  |  |  |  |  | 0 | 0 | 1
Other |  |  |  |  |  |  |  |  |  |  | (3) | 3 | (8)
Sub-Total |  |  |  |  |  |  |  |  |  |  | 24 | 30 | 38
Income Tax Provision |  |  |  |  |  |  |  |  |  |  | $ 515 | $ 470 | $ 449
Effective income tax rate |  |  |  |  |  |  |  |  |  |  | 36.70% | 37.40% | 38.20%
Power [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Net Income | $ (302) | [1] | $ 139 | $ (11) | $ 192 | $ 149 | [1] | $ 206 | $ 166 | $ 335 |  |  |
Net Income |  |  |  |  |  |  |  |  |  |  | $ 18 | $ 856 | $ 760
Federal |  |  |  |  |  |  |  |  |  |  | 107 | 220 | 231
State |  |  |  |  |  |  |  |  |  |  | 40 | 30 | 39
Total Current |  |  |  |  |  |  |  |  |  |  | 147 | 250 | 270
Federal |  |  |  |  |  |  |  |  |  |  | (222) | 189 | 163
State |  |  |  |  |  |  |  |  |  |  | (68) | 52 | 48
Total Deferred |  |  |  |  |  |  |  |  |  |  | (290) | 241 | 211
Investment tax credit |  |  |  |  |  |  |  |  |  |  | 82 | 20 | 10
Total Income Tax |  |  |  |  |  |  |  |  |  |  | (61) | 511 | 491
Pre-Tax Income |  |  |  |  |  |  |  |  |  |  | (43) | 1,367 | 1,251
Tax Computed at Statutory Rate @ 35% |  |  |  |  |  |  |  |  |  |  | (15) | 478 | 438
State Income Taxes (net of federal income tax) |  |  |  |  |  |  |  |  |  |  | (18) | 59 | 58
Uncertain Tax Positions |  |  |  |  |  |  |  |  |  |  | 9 | 22 | (8)
Manufacturing Deduction |  |  |  |  |  |  |  |  |  |  | (17) | (10) | (16)
Nuclear Decommissioning Trust |  |  |  |  |  |  |  |  |  |  | 3 | 7 | 15
Tax Credits |  |  |  |  |  |  |  |  |  |  | (18) | (7) | (6)
Audit Settlement |  |  |  |  |  |  |  |  |  |  | 0 | 0 | (4)
Nuclear Decommissiong Tax Carryback |  |  |  |  |  |  |  |  |  |  | 0 | (33) | 0
Other |  |  |  |  |  |  |  |  |  |  | (5) | (5) | 14
Sub-Total |  |  |  |  |  |  |  |  |  |  | (46) | 33 | 53
Income Tax Provision |  |  |  |  |  |  |  |  |  |  | $ (61) | $ 511 | $ 491
Effective income tax rate |  |  |  |  |  |  |  |  |  |  | 141.90% | 37.40% | 39.20%
[1] | The decreases in Operating Income at PSEG consolidated and Power in the fourth quarter 2016 as compared to the same quarter in 2015 were primarily due to costs related to closing the coal/gas Hudson and Mercer units and higher MTM losses in 2016.

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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32698-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32687-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32698-109319 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to domestic income tax settlement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32698-109319 + Details
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- Definition The amount deducted from an entities' taxes, reflecting a percentage of an amount invested in certain assets spread over the useful life of those assets; includes deferred investment tax credits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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