Retirement benefitsThe components of net periodic benefit cost (income) for our defined benefit pension and other postretirement plans were as follows: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | U.S. Pension Benefits | | Non-U.S. Pension Benefits | | Other Postretirement Benefits | | Three Months Ended | | Three Months Ended | | Three Months Ended | | | December 31, | | December 31, | | December 31, | | | 2025 | | 2024 | | 2025 | | 2024 | | 2025 | | 2024 | | Service cost | $ | 6 | | | $ | 7 | | | $ | 5 | | | $ | 5 | | | $ | — | | | $ | — | | | Interest cost | 42 | | | 46 | | | 19 | | | 19 | | | — | | | — | | | Expected return on plan assets | (58) | | | (61) | | | (22) | | | (21) | | | — | | | — | | | Amortization of prior service cost | 1 | | | 1 | | | — | | | — | | | — | | | — | | | Amortization of net actuarial loss (gain) | 1 | | | 2 | | | 1 | | | 1 | | | — | | | — | | | Net periodic benefit cost (income) | $ | (8) | | | $ | (5) | | | $ | 3 | | | $ | 4 | | | $ | — | | | $ | — | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | U.S. Pension Benefits | | Non-U.S. Pension Benefits | | Other Postretirement Benefits | | Six Months Ended | | Six Months Ended | | Six Months Ended | | | December 31, | | December 31, | | December 31, | | | 2025 | | 2024 | | 2025 | | 2024 | | 2025 | | 2024 | | Service cost | $ | 12 | | | $ | 14 | | | $ | 11 | | | $ | 11 | | | $ | — | | | $ | — | | | Interest cost | 84 | | | 92 | | | 37 | | | 38 | | | 1 | | | 1 | | | Expected return on plan assets | (116) | | | (122) | | | (45) | | | (43) | | | — | | | — | | | Amortization of prior service cost | 2 | | | 2 | | | — | | | — | | | — | | | — | | | Amortization of net actuarial loss (gain) | 2 | | | 4 | | | 3 | | | 3 | | | (1) | | | — | | | | | | | | | | | | | | | Net periodic benefit cost (income) | $ | (16) | | | $ | (10) | | | $ | 6 | | | $ | 9 | | | $ | — | | | $ | 1 | |
Components of net periodic benefit cost (income), other than service cost, are included in other income, net in the Consolidated Statements of Income. |