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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2015
Income Taxes [Line Items] |
Unrecognized Tax Benefits | PSEG recorded the following amounts related to its unrecognized tax benefits, which were primarily comprised of amounts recorded for PSE&G, Power and Energy Holdings:
| 2015 |  | PSEG |  | PSE&G |  | Power |  | Energy Holdings |
|  |  | Millions |
| Total Amount of Unrecognized Tax Benefits as of January 1, 2015 |  | $ | 332 |  |  | $ | 165 |  |  | $ | 70 |  |  | $ | 95 |  |
| Increases as a Result of Positions Taken in a Prior Period |  | 87 |  |  | 55 |  |  | 28 |  |  | 4 |  |
| Decreases as a Result of Positions Taken in a Prior Period |  | (50 | ) |  | (43 | ) |  | (6 | ) |  | (1 | ) |
| Increases as a Result of Positions Taken during the Current Period |  | 28 |  |  | 5 |  |  | 23 |  |  | — |  |
| Decreases as a Result of Positions Taken during the Current Period |  | (1 | ) |  | (1 | ) |  | — |  |  | — |  |
| Decreases as a Result of Settlements with Taxing Authorities |  | (10 | ) |  | — |  |  | (4 | ) |  | (5 | ) |
| Decreases due to Lapses of Applicable Statute of Limitations |  | — |  |  | — |  |  | — |  |  | — |  |
| Total Amount of Unrecognized Tax Benefits as of December 31, 2015 |  | $ | 386 |  |  | $ | 181 |  |  | $ | 111 |  |  | $ | 93 |  |
| Accumulated Deferred Income Taxes Associated with Unrecognized Tax Benefits |  | (264 | ) |  | (162 | ) |  | (68 | ) |  | (34 | ) |
| Regulatory Asset—Unrecognized Tax Benefits |  | (27 | ) |  | (27 | ) |  | — |  |  | — |  |
| Total Amount of Unrecognized Tax Benefits that if Recognized, would Impact the Effective Tax Rate (including Interest and Penalties) |  | $ | 95 |  |  | $ | (8 | ) |  | $ | 43 |  |  | $ | 59 |  |
| 2014 |  | PSEG |  | PSE&G |  | Power |  | Energy Holdings |
|  |  | Millions |
| Total Amount of Unrecognized Tax Benefits as of January 1, 2014 |  | $ | 478 |  |  | $ | 208 |  |  | $ | 156 |  |  | $ | 110 |  |
| Increases as a Result of Positions Taken in a Prior Period |  | 82 |  |  | 65 |  |  | 17 |  |  | — |  |
| Decreases as a Result of Positions Taken in a Prior Period |  | (190 | ) |  | (92 | ) |  | (80 | ) |  | (18 | ) |
| Increases as a Result of Positions Taken during the Current Period |  | 30 |  |  | 16 |  |  | 9 |  |  | 5 |  |
| Decreases as a Result of Positions Taken during the Current Period |  | (8 | ) |  | — |  |  | (8 | ) |  | — |  |
| Decreases as a Result of Settlements with Taxing Authorities |  | (60 | ) |  | (32 | ) |  | (24 | ) |  | (2 | ) |
| Decreases due to Lapses of Applicable Statute of Limitations |  | — |  |  | — |  |  | — |  |  | — |  |
| Total Amount of Unrecognized Tax Benefits as of December 31, 2014 |  | $ | 332 |  |  | $ | 165 |  |  | $ | 70 |  |  | $ | 95 |  |
| Accumulated Deferred Income Taxes Associated with Unrecognized Tax Benefits |  | (225 | ) |  | (138 | ) |  | (52 | ) |  | (35 | ) |
| Regulatory Asset—Unrecognized Tax Benefits |  | (27 | ) |  | (27 | ) |  | — |  |  | — |  |
| Total Amount of Unrecognized Tax Benefits that if Recognized, would Impact the Effective Tax Rate (including Interest and Penalties) |  | $ | 80 |  |  | $ | — |  |  | $ | 18 |  |  | $ | 60 |  |
| 2013 |  | PSEG |  | PSE&G |  | Power |  | Energy Holdings |
|  |  | Millions |
| Total Amount of Unrecognized Tax Benefits as of January 1, 2013 |  | $ | 402 |  |  | $ | 163 |  |  | $ | 134 |  |  | $ | 101 |  |
| Increases as a Result of Positions Taken in a Prior Period |  | 83 |  |  | 39 |  |  | 33 |  |  | 11 |  |
| Decreases as a Result of Positions Taken in a Prior Period |  | (30 | ) |  | (9 | ) |  | (19 | ) |  | (2 | ) |
| Increases as a Result of Positions Taken during the Current Period |  | 23 |  |  | 15 |  |  | 8 |  |  | — |  |
| Decreases as a Result of Positions Taken during the Current Period |  | — |  |  | — |  |  | — |  |  | — |  |
| Decreases as a Result of Settlements with Taxing Authorities |  | — |  |  | — |  |  | — |  |  | — |  |
| Decreases due to Lapses of Applicable Statute of Limitations |  | — |  |  | — |  |  | — |  |  | — |  |
| Total Amount of Unrecognized Tax Benefits as of December 31, 2013 |  | $ | 478 |  |  | $ | 208 |  |  | $ | 156 |  |  | $ | 110 |  |
| Accumulated Deferred Income Taxes Associated with Unrecognized Tax Benefits |  | (320 | ) |  | (177 | ) |  | (105 | ) |  | (37 | ) |
| Regulatory Asset—Unrecognized Tax Benefits |  | (30 | ) |  | (30 | ) |  | — |  |  | — |  |
| Total Amount of Unrecognized Tax Benefits that if Recognized, would Impact the Effective Tax Rate (including Interest and Penalties) |  | $ | 128 |  |  | $ | 1 |  |  | $ | 51 |  |  | $ | 73 |  |
Interest And Penalties Related To Uncertain Tax Positions | PSEG and its subsidiaries include accrued interest and penalties related to uncertain tax positions required to be recorded, as Income Tax Expense in the Consolidated Statements of Operations. Accumulated interest and penalties that are recorded on the Consolidated Balance Sheets on uncertain tax positions were as follows:
|  |  | Accumulated Interest and Penalties on Uncertain Tax Positions as of December 31, |
|  |  | 2015 |  | 2014 |  | 2013 |
|  |  | Millions |
| PSE&G |  | $ | 20 |  |  | $ | 15 |  |  | $ | 6 |  |
| Power |  | 6 |  |  | 9 |  |  | (2 | ) |
| Energy Holdings |  | 40 |  |  | 45 |  |  | 44 |  |
| Total |  | $ | 66 |  |  | $ | 69 |  |  | $ | 48 |  |
Possible Decrease In Total Unrecognized Tax Benefits Including Interest | It is reasonably possible that total unrecognized tax benefits will decrease within the next twelve months due to either agreements with various taxing authorities upon audit or the expiration of the Statute of Limitations. These potential decreases are as follows:
| Possible Decrease in Total Unrecognized Tax Benefits |  | Over the next 12 Months |
|  |  | Millions |
| PSEG |  | $ | 158 |  |
| PSE&G |  | $ | 102 |  |
| Power |  | $ | 42 |  |
Description Of Income Tax Years By Material Jurisdictions | A description of income tax years that remain subject to examination by material jurisdictions, where an examination has not already concluded are:
|  |  | PSEG |  | PSE&G |  | Power |
| United States |  |  |  |  |  |  |
| Federal |  | 2011-2014 |  | N/A |  | N/A |
| New Jersey |  | 2006-2014 |  | 2006-2014 |  | N/A |
| Pennsylvania |  | 2006-2014 |  | 2006-2014 |  | N/A |
| Connecticut |  | 2002-2014 |  | N/A |  | N/A |
| Texas |  | 2007-2014 |  | N/A |  | N/A |
| California |  | 2003-2014 |  | N/A |  | N/A |
| New York |  | 2011-2014 |  | N/A |  | 2011-2014 |
PSEG [Member] |
Income Taxes [Line Items] |
Schedule of Effective Income Tax Rate Reconciliation | A reconciliation of reported income tax expense for PSEG with the amount computed by multiplying pre-tax income by the statutory federal income tax rate of 35% is as follows:
|  |  | Years Ended December 31, |
| PSEG |  | 2015 |  | 2014 |  | 2013 |
|  |  | Millions |
| Net Income |  | $ | 1,679 |  |  | $ | 1,518 |  |  | $ | 1,243 |  |
| Income Taxes: |  |  |  |  |  |  |
| Operating Income: |  |  |  |  |  |  |
| Current Expense: |  |  |  |  |  |  |
| Federal |  | $ | 243 |  |  | $ | 335 |  |  | $ | 487 |  |
| State |  | 85 |  |  | 58 |  |  | 42 |  |
| Total Current |  | 328 |  |  | 393 |  |  | 529 |  |
| Deferred Expense: |  |  |  |  |  |  |
| Federal |  | 540 |  |  | 262 |  |  | 147 |  |
| State |  | 104 |  |  | 260 |  |  | 118 |  |
| Total Deferred |  | 644 |  |  | 522 |  |  | 265 |  |
| Investment Tax Credit (ITC) |  | 29 |  |  | 23 |  |  | 18 |  |
| Total Income Taxes |  | $ | 1,001 |  |  | $ | 938 |  |  | $ | 812 |  |
| Pre-Tax Income |  | $ | 2,680 |  |  | $ | 2,456 |  |  | $ | 2,055 |  |
| Tax Computed at Statutory Rate @ 35% |  | $ | 938 |  |  | $ | 860 |  |  | $ | 719 |  |
| Increase (Decrease) Attributable to Flow-Through of Certain Tax Adjustments: |  |  |  |  |  |  |
| State Income Taxes (net of federal income tax) |  | 129 |  |  | 145 |  |  | 108 |  |
| Uncertain Tax Positions |  | 7 |  |  | (9 | ) |  | 10 |  |
| Manufacturing Deduction |  | (10 | ) |  | (16 | ) |  | (9 | ) |
| NDT Fund |  | 7 |  |  | 14 |  |  | 12 |  |
| Plant-Related Items |  | (20 | ) |  | (13 | ) |  | (14 | ) |
| Tax Credits |  | (13 | ) |  | (14 | ) |  | (9 | ) |
| Audit Settlement |  | — |  |  | (12 | ) |  | — |  |
| Nuclear Decommissioning Tax Carryback |  | (33 | ) |  | — |  |  | — |  |
| Other |  | (4 | ) |  | (17 | ) |  | (5 | ) |
| Sub-Total |  | 63 |  |  | 78 |  |  | 93 |  |
| Total Income Tax Provision |  | $ | 1,001 |  |  | $ | 938 |  |  | $ | 812 |  |
| Effective Income Tax Rate |  | 37.4 | % |  | 38.2 | % |  | 39.5 | % |
Deferred Income Taxes | The following is an analysis of deferred income taxes for PSEG:
|  |  | As of December 31, |
| PSEG |  | 2015 |  | 2014 |
|  |  | Millions |
| Deferred Income Taxes |  |  |  |  |
| Assets: |  |  |  |  |
| Current (net) |  | $ | — |  |  | $ | 11 |  |
| Noncurrent |  |  |  |  |
| OPEB |  | $ | 256 |  |  | $ | 269 |  |
| Related to Uncertain Tax Position |  | 160 |  |  | 160 |  |
| Securitization-Overcollection |  | 27 |  |  | 55 |  |
| Total Noncurrent Assets |  | $ | 443 |  |  | $ | 484 |  |
| Total Assets |  | $ | 443 |  |  | $ | 495 |  |
| Liabilities: |  |  |  |  |
| Current (net) |  |  |  |  |
| Securitization |  | $ | — |  |  | $ | 163 |  |
| Other |  | — |  |  | 10 |  |
| Total Current Liabilities (net) |  | $ | — |  |  | $ | 173 |  |
| Noncurrent: |  |  |  |  |
| Plant-Related Items |  | $ | 6,174 |  |  | $ | 5,422 |  |
| New Jersey Corporate Business Tax |  | 615 |  |  | 535 |  |
| Leasing Activities |  | 612 |  |  | 623 |  |
| Pension Costs |  | 218 |  |  | 219 |  |
| AROs and NDT Fund |  | 393 |  |  | 419 |  |
| Taxes Recoverable Through Future Rate (net) |  | 191 |  |  | 196 |  |
| Other |  | 244 |  |  | 240 |  |
| Total Noncurrent Liabilities |  | $ | 8,447 |  |  | $ | 7,654 |  |
| Total Liabilities |  | $ | 8,447 |  |  | $ | 7,827 |  |
| Summary of Accumulated Deferred Income Taxes: |  |  |  |  |
| Net Current Deferred Income Tax Assets |  | $ | — |  |  | $ | 11 |  |
| Net Current Deferred Income Tax Liabilities |  | $ | — |  |  | $ | 173 |  |
| Net Noncurrent Deferred Income Tax Liabilities |  | $ | 8,004 |  |  | $ | 7,170 |  |
| ITC |  | 162 |  |  | 133 |  |
| Net Total Noncurrent Deferred Income Taxes and ITC |  | $ | 8,166 |  |  | $ | 7,303 |  |
The deferred tax effect of certain assets and liabilities is presented in the table above net of the deferred tax effect associated with the respective regulatory deferrals. Also, the deferred tax effect of AROs is presented net of the deferred tax effect of the associated funding of those obligations. PSEG has early adopted the accounting standards update Balance Sheet Classification of Deferred Taxes as of December 31, 2015. This standard requires noncurrent classification of all deferred tax assets and liabilities. For further details refer to Note 2. Recent Accounting Standards.
PSE&G [Member] |
Income Taxes [Line Items] |
Schedule of Effective Income Tax Rate Reconciliation | A reconciliation of reported income tax expense for PSE&G with the amount computed by multiplying pre-tax income by the statutory federal income tax rate of 35% is as follows:
|  |  | Years Ended December 31, |
| PSE&G |  | 2015 |  | 2014 |  | 2013 |
|  |  | Millions |
| Net Income |  | $ | 787 |  |  | $ | 725 |  |  | $ | 612 |  |
| Income Taxes: |  |  |  |  |  |  |
| Operating Income: |  |  |  |  |  |  |
| Current Expense: |  |  |  |  |  |  |
| Federal |  | $ | 32 |  |  | $ | 124 |  |  | $ | 183 |  |
| State |  | 52 |  |  | 16 |  |  | — |  |
| Total Current |  | 84 |  |  | 140 |  |  | 183 |  |
| Deferred Expense: |  |  |  |  |  |  |
| Federal |  | 325 |  |  | 214 |  |  | 101 |  |
| State |  | 52 |  |  | 84 |  |  | 92 |  |
| Total Deferred |  | 377 |  |  | 298 |  |  | 193 |  |
| ITC |  | 9 |  |  | 11 |  |  | 5 |  |
| Total Income Taxes |  | $ | 470 |  |  | $ | 449 |  |  | $ | 381 |  |
| Pre-Tax Income |  | $ | 1,257 |  |  | $ | 1,174 |  |  | $ | 993 |  |
| Tax Computed at Statutory Rate @ 35% |  | $ | 440 |  |  | $ | 411 |  |  | $ | 348 |  |
| Increase (Decrease) Attributable to Flow-Through of Certain Tax Adjustments: |  |  |  |  |  |  |
| State Income Taxes (net of federal income tax) |  | 67 |  |  | 65 |  |  | 59 |  |
| Uncertain Tax Positions |  | (14 | ) |  | — |  |  | — |  |
| Plant-Related Items |  | (20 | ) |  | (13 | ) |  | (14 | ) |
| Tax Credits |  | (6 | ) |  | (7 | ) |  | (6 | ) |
| Audit Settlement |  | — |  |  | 1 |  |  | — |  |
| Other |  | 3 |  |  | (8 | ) |  | (6 | ) |
| Sub-Total |  | 30 |  |  | 38 |  |  | 33 |  |
| Total Income Tax Provision |  | $ | 470 |  |  | $ | 449 |  |  | $ | 381 |  |
| Effective Income Tax Rate |  | 37.4 | % |  | 38.2 | % |  | 38.4 | % |
Deferred Income Taxes | The following is an analysis of deferred income taxes for PSE&G:
|  |  | As of December 31, |
| PSE&G |  | 2015 |  | 2014 |
|  |  | Millions |
| Deferred Income Taxes |  |  |  |  |
| Assets: |  |  |  |  |
| Current (net) |  | $ | — |  |  | $ | 24 |  |
| Noncurrent: |  |  |  |  |
| OPEB |  | $ | 164 |  |  | $ | 173 |  |
| Securitization-Overcollection |  | 27 |  |  | 55 |  |
| Total Noncurrent Assets |  | $ | 191 |  |  | $ | 228 |  |
| Total Assets |  | $ | 191 |  |  | $ | 252 |  |
| Liabilities: |  |  |  |  |
| Current (net) |  |  |  |  |
| Securitization |  | $ | — |  |  | $ | 163 |  |
| Other |  | — |  |  | 2 |  |
| Total Current Liabilities (net) |  | $ | — |  |  | $ | 165 |  |
| Noncurrent: |  |  |  |  |
| Plant-Related Items |  | $ | 4,435 |  |  | $ | 3,869 |  |
| New Jersey Corporate Business Tax |  | 312 |  |  | 268 |  |
| Conservation Costs |  | 40 |  |  | 48 |  |
| Pension Costs |  | 262 |  |  | 269 |  |
| Taxes Recoverable Through Future Rate (net) |  | 191 |  |  | 196 |  |
| Other |  | 54 |  |  | 84 |  |
| Total Noncurrent Liabilities |  | $ | 5,294 |  |  | $ | 4,734 |  |
| Total Liabilities |  | $ | 5,294 |  |  | $ | 4,899 |  |
| Summary of Accumulated Deferred Income Taxes: |  |  |  |  |
| Net Current Deferred Income Tax Assets |  | $ | — |  |  | $ | 24 |  |
| Net Current Deferred Income Tax Liabilities |  | $ | — |  |  | $ | 165 |  |
| Net Noncurrent Deferred Income Tax Liabilities |  | $ | 5,103 |  |  | $ | 4,506 |  |
| ITC |  | 78 |  |  | 69 |  |
| Net Total Noncurrent Deferred Income Taxes and ITC |  | $ | 5,181 |  |  | $ | 4,575 |  |
The deferred tax effect of certain assets and liabilities is presented in the table above net of the deferred tax effect associated with the respective regulatory deferrals. PSEG has early adopted the accounting standards update Balance Sheet Classification of Deferred Taxes as of December 31, 2015. This standard requires noncurrent classification of all deferred tax assets and liabilities. For further details refer to Note 2. Recent Accounting Standards.
Power [Member] |
Income Taxes [Line Items] |
Schedule of Effective Income Tax Rate Reconciliation | A reconciliation of reported income tax expense for Power with the amount computed by multiplying pre-tax income by the statutory federal income tax rate of 35% is as follows:
|  |  | Years Ended December 31, |
| Power |  | 2015 |  | 2014 |  | 2013 |
|  |  | Millions |
| Net Income |  | $ | 856 |  |  | $ | 760 |  |  | $ | 644 |  |
| Income Taxes: |  |  |  |  |  |  |
| Operating Income: |  |  |  |  |  |  |
| Current Expense: |  |  |  |  |  |  |
| Federal |  | $ | 220 |  |  | $ | 231 |  |  | $ | 262 |  |
| State |  | 30 |  |  | 39 |  |  | 40 |  |
| Total Current |  | 250 |  |  | 270 |  |  | 302 |  |
| Deferred Expense: |  |  |  |  |  |  |
| Federal |  | 189 |  |  | 163 |  |  | 69 |  |
| State |  | 52 |  |  | 48 |  |  | 35 |  |
| Total Deferred |  | 241 |  |  | 211 |  |  | 104 |  |
| ITC |  | 20 |  |  | 10 |  |  | 13 |  |
| Total Income Taxes |  | $ | 511 |  |  | $ | 491 |  |  | $ | 419 |  |
| Pre-Tax Income |  | $ | 1,367 |  |  | $ | 1,251 |  |  | $ | 1,063 |  |
| Tax Computed at Statutory Rate @ 35% |  | $ | 478 |  |  | $ | 438 |  |  | $ | 372 |  |
| Increase (Decrease) Attributable to Flow-Through of Certain Tax Adjustments: |  |  |  |  |  |  |
| State Income Taxes (net of federal income tax) |  | 59 |  |  | 58 |  |  | 51 |  |
| Manufacturing Deduction |  | (10 | ) |  | (16 | ) |  | (10 | ) |
| NDT Fund |  | 7 |  |  | 15 |  |  | 12 |  |
| Tax Credits |  | (7 | ) |  | (6 | ) |  | (2 | ) |
| Uncertain Tax Positions |  | 22 |  |  | (8 | ) |  | 3 |  |
| Audit Settlement |  | — |  |  | (4 | ) |  | — |  |
| Nuclear Decommissioning Tax Carryback |  | (33 | ) |  | — |  |  | — |  |
| Other |  | (5 | ) |  | 14 |  |  | (7 | ) |
| Sub-Total |  | 33 |  |  | 53 |  |  | 47 |  |
| Total Income Tax Provision |  | $ | 511 |  |  | $ | 491 |  |  | $ | 419 |  |
| Effective Income Tax Rate |  | 37.4 | % |  | 39.2 | % |  | 39.4 | % |
Deferred Income Taxes | The following is an analysis of deferred income taxes for Power:
|  |  | As of December 31, |
| Power |  | 2015 |  | 2014 |
|  |  | Millions |
| Deferred Income Taxes |  |  |  |  |
| Assets: |  |  |  |  |
| Current |  | $ | — |  |  | $ | — |  |
| Noncurrent: |  |  |  |  |
| Pension Costs |  | $ | 56 |  |  | $ | 52 |  |
| Contractual Liabilities & Environmental Costs |  | 18 |  |  | 18 |  |
| Related to Uncertain Tax Positions |  | 47 |  |  | 23 |  |
| Other |  | — |  |  | 70 |  |
| Total Noncurrent Assets |  | $ | 121 |  |  | $ | 163 |  |
| Total Assets |  | $ | 121 |  |  | $ | 163 |  |
| Liabilities: |  |  |  |  |
| Current (net) |  | $ | — |  |  | $ | 43 |  |
| Noncurrent: |  |  |  |  |
| Plant-Related Items |  | $ | 1,736 |  |  | $ | 1,552 |  |
| New Jersey Corporate Business Tax |  | 243 |  |  | 192 |  |
| AROs and NDT Fund |  | 395 |  |  | 420 |  |
| Other |  | 10 |  |  | — |  |
| Total Noncurrent Liabilities |  | $ | 2,384 |  |  | $ | 2,164 |  |
| Total Liabilities |  | $ | 2,384 |  |  | $ | 2,207 |  |
| Summary of Accumulated Deferred Income Taxes: |  |  |  |  |
| Net Current Deferred Income Tax Assets |  | $ | — |  |  | $ | — |  |
| Net Current Deferred Income Tax Liabilities |  | $ | — |  |  | $ | 43 |  |
| Net Noncurrent Deferred Income Tax Liabilities |  | $ | 2,263 |  |  | $ | 2,001 |  |
| ITC |  | 84 |  |  | 64 |  |
| Net Total Noncurrent Deferred Income Taxes and ITC |  | $ | 2,347 |  |  | $ | 2,065 |  |
In the above table, the deferred tax effect of asset retirement obligations is presented net of the deferred tax effect of the associated funding of those obligations. PSEG has early adopted the accounting standards update Balance Sheet Classification of Deferred Taxes as of December 31, 2015. This standard requires noncurrent classification of all deferred tax assets and liabilities. For further details refer to Note 2. Recent Accounting Standards.

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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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