The components of net periodic benefit income for our defined benefit pension plans and other postretirement benefit plans (“other benefits”) (collectively, “defined benefit plans”) were as follows: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Second Quarter | | 2025 | | 2024 | | (In millions) | Pension | | Other Benefits | | Total | | Pension | | Other Benefits | | Total | | | | | | | | | | | | | | | | | | | | | | | | | | Operating | | | | | | | | | | | | Service cost(1) | $ | 6 | | | $ | 1 | | | $ | 7 | | | $ | 9 | | | $ | 1 | | | $ | 10 | | | Non-operating | | | | | | | | | | | | | Interest cost | 77 | | | 2 | | | 79 | | | 98 | | | 2 | | | 100 | | | Expected return on plan assets | (136) | | | (5) | | | (141) | | | (165) | | | (5) | | | (170) | | | Amortization of net actuarial gains | (2) | | | (4) | | | (6) | | | (1) | | | (5) | | | (6) | | | Amortization of prior service (credits) costs | (6) | | | 1 | | | (5) | | | (6) | | | 1 | | | (5) | | | | | | | | | | | | | | Non-service cost net periodic benefit income(2) | (67) | | | (6) | | | (73) | | | (74) | | | (7) | | | (81) | | | Net periodic benefit income | $ | (61) | | | $ | (5) | | | $ | (66) | | | $ | (65) | | | $ | (6) | | | $ | (71) | | | | | | | | | | | | | | | Year to Date | | 2025 | | 2024 | | (In millions) | Pension | | Other Benefits | | Total | | Pension | | Other Benefits | | Total | | | | | | | | | | | | | | | | | | | | | | | | | | Operating | | | | | | | | | | | | Service cost(1) | $ | 12 | | | $ | 1 | | | $ | 13 | | | $ | 17 | | | $ | 1 | | | $ | 18 | | | Non-operating | | | | | | | | | | | | | Interest cost | 165 | | | 5 | | | 170 | | | 197 | | | 5 | | | 202 | | | Expected return on plan assets | (287) | | | (10) | | | (297) | | | (330) | | | (10) | | | (340) | | | Amortization of net actuarial gains | (3) | | | (7) | | | (10) | | | (2) | | | (9) | | | (11) | | | Amortization of prior service (credits) costs | (13) | | | 1 | | | (12) | | | (13) | | | 1 | | | (12) | | | Effect of settlements | (14) | | | — | | | (14) | | | — | | | — | | | — | | Non-service cost net periodic benefit income(2) | (152) | | | (11) | | | (163) | | | (148) | | | (13) | | | (161) | | | Net periodic benefit income | $ | (140) | | | $ | (10) | | | $ | (150) | | | $ | (131) | | | $ | (12) | | | $ | (143) | |
______________(1)Included in the “Cost of revenue” and “General and administrative expenses” line items in our Condensed Consolidated Statement of Operations. (2)Included in the “Non-service FAS pension income and other, net” line item in our Condensed Consolidated Statement of Operations.
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