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Pension and OPEB (Tables) | 9 Months Ended
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Sep. 30, 2017
Compensation and Retirement Disclosure [Abstract] |
Components Of Net Periodic Benefit Cost | The following table provides the components of net periodic benefit costs relating to all qualified and nonqualified pension and OPEB plans on an aggregate basis for PSEG, excluding Servco.
|  | Pension Benefits |  | OPEB |  | Pension Benefits |  | OPEB |
|  | Three Months Ended |  | Three Months Ended |  | Nine Months Ended |  | Nine Months Ended |
|  | September 30, |  | September 30, |  | September 30, |  | September 30, |
|  | 2017 |  |  | 2016 |  | 2017 |  |  | 2016 |  | 2017 |  | 2016 |  | 2017 |  | 2016 |
|  | Millions |
| Components of Net Periodic Benefit Costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Service Cost | $ | 29 |  |  | $ | 28 |  |  | $ | 4 |  |  | $ | 5 |  |  | $ | 86 |  |  | $ | 82 |  |  | $ | 12 |  |  | $ | 13 |  |
| Interest Cost | 51 |  |  | 50 |  |  | 15 |  |  | 15 |  |  | 153 |  |  | 151 |  |  | 47 |  |  | 44 |  |
| Expected Return on Plan Assets | (98 | ) |  | (98 | ) |  | (8 | ) |  | (8 | ) |  | (295 | ) |  | (295 | ) |  | (25 | ) |  | (23 | ) |
| Amortization of Net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Prior Service Cost (Credit) | (5 | ) |  | (5 | ) |  | (3 | ) |  | (4 | ) |  | (14 | ) |  | (14 | ) |  | (8 | ) |  | (11 | ) |
| Actuarial Loss | 24 |  |  | 39 |  |  | 13 |  |  | 10 |  |  | 73 |  |  | 118 |  |  | 38 |  |  | 30 |  |
| Total Benefit Costs | $ | 1 |  |  | $ | 14 |  |  | $ | 21 |  |  | $ | 18 |  |  | $ | 3 |  |  | $ | 42 |  |  | $ | 64 |  |  | $ | 53 |  |
Schedule Of Pension And OPEB Costs | Pension and OPEB costs for PSE&G, Power and PSEG’s other subsidiaries, excluding Servco, are detailed as follows:
|  | Pension Benefits |  | OPEB |  | Pension Benefits |  | OPEB |
|  | Three Months Ended |  | Three Months Ended |  | Nine Months Ended |  | Nine Months Ended |
|  | September 30, |  | September 30, |  | September 30, |  | September 30, |
|  | 2017 |  | 2016 |  | 2017 |  | 2016 |  | 2017 |  | 2016 |  | 2017 |  | 2016 |
|  | Millions |
| PSE&G | $ | (1 | ) |  | $ | 8 |  |  | $ | 13 |  |  | $ | 11 |  |  | $ | (3 | ) |  | $ | 22 |  |  | $ | 40 |  |  | $ | 33 |  |
| Power | — |  |  | 3 |  |  | 7 |  |  | 6 |  |  | 1 |  |  | 11 |  |  | 20 |  |  | 17 |  |
| Other | 2 |  |  | 3 |  |  | 1 |  |  | 1 |  |  | 5 |  |  | 9 |  |  | 4 |  |  | 3 |  |
| Total Benefit Costs | $ | 1 |  |  | $ | 14 |  |  | $ | 21 |  |  | $ | 18 |  |  | $ | 3 |  |  | $ | 42 |  |  | $ | 64 |  |  | $ | 53 |  |

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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