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Pension and Other Postretirement Benefits | 9 Months Ended
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Sep. 30, 2019
Retirement Benefits [Abstract] |
Pension and Other Postretirement Plans | PENSION AND OTHER POSTRETIREMENT BENEFITS The following summarizes the components of net periodic benefit costs:
| Three Months Ended September 30, 2019
| Pension Benefits |  | Other Benefits
(In millions) | 2019 |  | 2018 |  | 2019 |  | 2018
Components of net periodic benefit cost: |  |  |  |  |  |  |
Service cost | $ | 57 |  |  | $ | 36 |  |  | $ | 8 |  |  | $ | 7 |
Interest cost | 27 |  |  | 18 |  |  | 9 |  |  | 7 |
Expected return on plan assets | (31 | ) |  | (25 | ) |  | — |  |  | — |
Amortization – prior service credit | (11 | ) |  | (9 | ) |  | — |  |  | — |
– actuarial loss | 5 |  |  | 9 |  |  | — |  |  | (1 | )
– settlement loss | 7 |  |  | 45 |  |  | — |  |  | — |
Net periodic benefit cost | $ | 54 |  |  | $ | 74 |  |  | $ | 17 |  |  | $ | 13 |
| Nine Months Ended September 30,
| Pension Benefits |  | Other Benefits
(In millions) | 2019 |  | 2018 |  | 2019 |  | 2018
Components of net periodic benefit cost: |  |  |  |  |  |  |
Service cost | $ | 175 |  |  | $ | 107 |  |  | $ | 24 |  |  | $ | 22 |
Interest cost | 82 |  |  | 54 |  |  | 28 |  |  | 22 |
Expected return on plan assets | (94 | ) |  | (75 | ) |  | — |  |  | — |
Amortization – prior service credit | (34 | ) |  | (25 | ) |  | — |  |  | (2 | )
– actuarial loss | 16 |  |  | 26 |  |  | (1 | ) |  | (1 | )
– settlement loss | 9 |  |  | 47 |  |  | — |  |  | — |
Net periodic benefit cost | $ | 154 |  |  | $ | 134 |  |  | $ | 51 |  |  | $ | 41 |
The components of net periodic benefit cost other than the service cost component are included in net interest and other financial costs on the consolidated statements of income. During the nine months ended September 30, 2019, we made contributions of $267 million to our funded pension plans. Benefit payments related to unfunded pension and other postretirement benefit plans were $16 million and $32 million, respectively, during the nine months ended September 30, 2019.

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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