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Pension and OPEB (Tables) | 3 Months Ended
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Mar. 31, 2018
Retirement Benefits [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. Amounts shown do not reflect the impacts of capitalization. Effective with the adoption of ASU 2017-07 on January 1, 2018, only the service cost component is eligible for capitalization, when applicable. For additional information, see Note 2. Recent Accounting Standards.
|  |  | Pension Benefits |  | OPEB |
|  |  | Three Months Ended |  | Three Months Ended |
|  |  | March 31, |  | March 31, |
|  |  | 2018 |  | 2017 |  | 2018 |  | 2017 |
|  | Millions |
| Components of Net Periodic Benefit (Credits) Costs |  |  |  |  |  |  |  |  |
| Service Cost (included in O&M Expense) |  | $ | 32 |  |  | $ | 29 |  |  | $ | 4 |  |  | $ | 4 |  |
| Non-Operating Pension and OPEB (Credits) Costs |  |  |  |  |  |  |  |  |
| Interest Cost |  | 52 |  |  | 51 |  |  | 16 |  |  | 16 |  |
| Expected Return on Plan Assets |  | (110 | ) |  | (98 | ) |  | (10 | ) |  | (8 | ) |
| Amortization of Net |  |  |  |  |  |  |  |  |
| Prior Service Cost |  | (4 | ) |  | (5 | ) |  | — |  |  | (3 | ) |
| Actuarial Loss |  | 21 |  |  | 24 |  |  | 16 |  |  | 13 |  |
| Non-Operating Pension and OPEB (Credits) Costs |  | (41 | ) |  | (28 | ) |  | 22 |  |  | 18 |  |
| Total Benefit (Credits) Costs |  | $ | (9 | ) |  | $ | 1 |  |  | $ | 26 |  |  | $ | 22 |  |
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 |
|  |  | Three Months Ended |  | Three Months Ended |
|  |  | March 31, |  | March 31, |
|  |  | 2018 |  | 2017 |  | 2018 |  | 2017 |
|  | Millions |
| PSE&G |  | $ | (8 | ) |  | $ | (1 | ) |  | $ | 17 |  |  | $ | 14 |  |
| Power |  | (2 | ) |  | — |  |  | 8 |  |  | 7 |  |
| Other |  | 1 |  |  | 2 |  |  | 1 |  |  | 1 |  |
| Total Benefit (Credits) Costs |  | $ | (9 | ) |  | $ | 1 |  |  | $ | 26 |  |  | $ | 22 |  |

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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=82843861&loc=d3e1928-114920 + Details
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