Note 10: Employee Benefit Plans Pension and Postretirement Plans. We sponsor both funded and unfunded domestic and foreign defined benefit pension and postretirement benefit (PRB) plans and defined contribution plans. Contributions to our plans were as follows: | | | | | | | | | | | | | | | | | | | | | | | | | | Quarter Ended June 30, | | Six Months Ended June 30, | | (dollars in millions) | 2026 | | 2025 | | 2026 | | 2025 | | | | | | | | | | | | | | | | | | | | | | | | | | Defined contribution plans | $ | 357 | | | $ | 340 | | | $ | 820 | | | $ | 741 | |
The amounts recognized in the Condensed Consolidated Balance Sheet consist of: | | | | | | | | | | | | | (dollars in millions) | June 30, 2026 | | December 31, 2025 | | Non-current pension assets (included in Other assets) | $ | 2,918 | | | $ | 2,339 | | | Current pension and PRB liabilities (included in Accrued employee compensation) | 227 | | | 228 | | | Future pension and postretirement benefit obligations | 1,956 | | | 2,067 | |
The amounts recognized in Future pension and postretirement benefit obligations consist of: | | | | | | | | | | | | | (dollars in millions) | June 30, 2026 | | December 31, 2025 | | Non-current pension liabilities | $ | 1,415 | | | $ | 1,510 | | | Non-current PRB liabilities | 470 | | | 501 | | | Other pension and PRB related items | 71 | | | 56 | | | Future pension and postretirement benefit obligations | $ | 1,956 | | | $ | 2,067 | |
The components of net periodic income for our defined pension plans were as follows: | | | | | | | | | | | | | | | | | | | | | | | | | | Quarter Ended June 30, | | Six Months Ended June 30, | | (dollars in millions) | 2026 | | 2025 | | 2026 | | 2025 | | Operating expense | | | | | | | | | Service cost | $ | 41 | | | $ | 42 | | | $ | 82 | | | $ | 84 | | | Non-operating expense (income) | | | | | | | | | Interest cost | 509 | | | 586 | | | 1,014 | | | 1,169 | | | Expected return on plan assets | (836) | | | (921) | | | (1,672) | | | (1,838) | | | Amortization of prior service credit | (32) | | | (36) | | | (64) | | | (75) | | | Recognized actuarial net loss | 11 | | | 5 | | | 22 | | | 10 | | | Net settlement, curtailment, and special termination benefit loss (gain) | 2 | | | 14 | | | (2) | | | 14 | | | Non-service pension income | (346) | | | (352) | | | (702) | | | (720) | | | Total net periodic pension income | $ | (305) | | | $ | (310) | | | $ | (620) | | | $ | (636) | |
We have set aside assets in separate trusts, which we expect to be used to pay for certain nonqualified defined benefit and defined contribution plan obligations in excess of qualified plan limits. These assets are included in Other assets in our Condensed Consolidated Balance Sheet. The fair value of marketable securities held in trusts was as follows: | | | | | | | | | | | | | (dollars in millions) | June 30, 2026 | | December 31, 2025 | | Marketable securities held in trusts | $ | 711 | | | $ | 750 | |
|