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Regulatory Assets And Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2017
Regulatory Assets and Liabilities Disclosure [Abstract] |
Schedule of Regulatory Assets | PSE&G had the following Regulatory Assets and Liabilities:
|  |  | As of December 31, |
|  |  | 2017 |  | 2016 |
|  |  | Millions |
| Regulatory Assets |  |  |  |  |
| Current |  |  |  |  |
| New Jersey Clean Energy Program |  | $ | 128 |  |  | $ | 142 |  |
| Weather Normalization Clause (WNC) |  | 40 |  |  | 49 |  |
| Electric Energy Costs—Basic Generation Service |  | 23 |  |  | 2 |  |
| FERC Formula Rate True-up |  | 12 |  |  | — |  |
| Other |  | 8 |  |  | 6 |  |
| Total Current Regulatory Assets |  | $ | 211 |  |  | $ | 199 |  |
| Noncurrent |  |  |  |  |
| Pension and OPEB Costs |  | $ | 1,488 |  |  | $ | 1,403 |  |
| Manufactured Gas Plant (MGP) Remediation Costs |  | 358 |  |  | 403 |  |
| Deferred Income Taxes |  | 282 |  |  | 507 |  |
| Storm Damage Deferrals |  | 241 |  |  | 239 |  |
| Electric Transmission and Gas Cost of Removal |  | 199 |  |  | 189 |  |
| Remediation Adjustment Charge (RAC) (Other SBC) |  | 172 |  |  | 180 |  |
| Conditional Asset Retirement Obligation |  | 162 |  |  | 157 |  |
| Green Program Recovery Charges (GPRC) |  | 98 |  |  | 91 |  |
| Unamortized Loss on Reacquired Debt and Debt Expense |  | 55 |  |  | 61 |  |
| Gas Costs—Basic Gas Supply Service (BGSS) |  | 30 |  |  | — |  |
| FERC Formula Rate True-up |  | 16 |  |  | — |  |
| Other |  | 121 |  |  | 89 |  |
| Total Noncurrent Regulatory Assets |  | $ | 3,222 |  |  | $ | 3,319 |  |
| Total Regulatory Assets |  | $ | 3,433 |  |  | $ | 3,518 |  |
Schedule of Regulatory Liabilities |
|  |  | As of December 31, |
|  |  | 2017 |  | 2016 |
|  |  | Millions |
| Regulatory Liabilities |  |  |  |  |
| Current |  |  |  |  |
| Gas Costs —BGSS |  | $ | 30 |  |  | $ | 6 |  |
| Gas Margin Adjustment Clause |  | 12 |  |  | 11 |  |
| GPRC |  | 3 |  |  | 28 |  |
| FERC Formula Rate True-up |  | — |  |  | 34 |  |
| Other |  | 2 |  |  | 9 |  |
| Total Current Regulatory Liabilities |  | $ | 47 |  |  | $ | 88 |  |
| Noncurrent |  |  |  |  |
| Excess Deferred Income Tax Regulatory Liability |  | $ | 2,868 |  |  | $ | — |  |
| Electric Distribution Cost of Removal |  | 80 |  |  | 94 |  |
| Mark-to-Market (MTM) Contracts |  | — |  |  | 20 |  |
| Other |  | — |  |  | 4 |  |
| Total Noncurrent Regulatory Liabilities |  | $ | 2,948 |  |  | $ | 118 |  |
| Total Regulatory Liabilities |  | $ | 2,995 |  |  | $ | 206 |  |

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- Definition Tabular disclosure of assets that are created when regulatory agencies permit public utilities to defer certain costs included in rate-setting to the balance sheet. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44264-110382 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 715 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501251&loc=d3e52485-110419 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382 + Details
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- Definition Tabular disclosure of regulatory liabilities. Detailed information about liabilities that result from rate actions of a regulator. Rate actions of a regulator can impose a liability on a regulated enterprise resulting in a regulatory liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 405 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6500807&loc=d3e48068-110394 + Details
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