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Pension and Other Postemployment Benefits | 9 Months Ended
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Sep. 30, 2016
Compensation and Retirement Disclosure [Abstract] |
PENSIONS AND OTHER POSTEMPLOYMENT BENEFITS | PENSION AND OTHER POSTEMPLOYMENT BENEFITS Through October 2016, FirstEnergy satisfied its minimum required funding obligations to its qualified pension plan for the year with contributions of $382 million ($85 million in October 2016), including $138 million at FES. Depending on, among other things, market conditions, FirstEnergy expects to make additional contributions to its qualified pension plan in 2016 of up to $500 million of equity to address its funding obligations for future years. The components of the consolidated net periodic cost (credits) for pension and OPEB (including amounts capitalized) were as follows:
Components of Net Periodic Benefit Costs (Credits) |  | Pension | OPEB
For the Three Months Ended September 30 |  | 2016 |  | 2015 |  | 2016 |  | 2015
|  | (In millions)
Service costs |  | $ | 48 |  |  | $ | 49 |  |  | $ | 2 |  |  | $ | 2 |
Interest costs |  | 99 |  |  | 96 |  |  | 7 |  |  | 7 |
Expected return on plan assets |  | (100 | ) |  | (111 | ) |  | (7 | ) |  | (9 | )
Amortization of prior service costs (credits) |  | 2 |  |  | 2 |  |  | (20 | ) |  | (33 | )
Net periodic costs (credits) |  | $ | 49 |  |  | $ | 36 |  |  | $ | (18 | ) |  | $ | (33 | )
Components of Net Periodic Benefit Costs (Credits) |  | Pension | OPEB
For the Nine Months Ended September 30 |  | 2016 |  | 2015 |  | 2016 |  | 2015
|  | (In millions)
Service costs |  | $ | 144 |  |  | $ | 145 |  |  | $ | 4 |  |  | $ | 4 |
Interest costs |  | 298 |  |  | 288 |  |  | 22 |  |  | 21 |
Expected return on plan assets |  | (297 | ) |  | (333 | ) |  | (23 | ) |  | (25 | )
Amortization of prior service costs (credits) |  | 6 |  |  | 6 |  |  | (60 | ) |  | (100 | )
Net periodic costs (credits) |  | $ | 151 |  |  | $ | 106 |  |  | $ | (57 | ) |  | $ | (100 | )
FES' share of the net periodic pension and OPEB costs (credits) were as follows:
|  | Pension | OPEB
|  | 2016 |  | 2015 |  | 2016 |  | 2015
|  | (In millions)
For the Three Months Ended September 30 |  | $ | 6 |  |  | $ | 4 |  |  | $ | (4 | ) |  | $ | (5 | )
For the Nine Months Ended September 30 |  | 18 |  |  | 12 |  |  | (12 | ) |  | (15 | )
Pension and OPEB obligations are allocated to FE's subsidiaries, including FES, employing the plan participants. The net periodic pension and OPEB costs (credits), net of amounts capitalized, recognized in earnings by FirstEnergy and FES were as follows:
Net Periodic Benefit Expense (Credit) |  | Pension |  | OPEB
For the Three Months Ended September 30 |  | 2016 |  | 2015 |  | 2016 |  | 2015
|  | (In millions)
FirstEnergy |  | $ | 35 |  |  | $ | 25 |  |  | $ | (11 | ) |  | $ | (21 | )
FES |  | 5 |  |  | 4 |  |  | (4 | ) |  | (4 | )
Net Periodic Benefit Expense (Credit) |  | Pension |  | OPEB
For the Nine Months Ended September 30 |  | 2016 |  | 2015 |  | 2016 |  | 2015
|  | (In millions)
FirstEnergy |  | $ | 107 |  |  | $ | 74 |  |  | $ | (41 | ) |  | $ | (66 | )
FES |  | 17 |  |  | 12 |  |  | (12 | ) |  | (12 | )

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