The following table reflects the components of net periodic benefit cost (income) for the three months ended September 30, 2021 and 2020: | | | | | | | | | | | | | | | | | | | | | | | | | Pension Benefits | | Other Benefits | (In millions) | 2021 | | 2020 | | 2021 | | 2020 | Service cost | $ | 12 | | | $ | 13 | | | $ | 3 | | | $ | 3 | | Interest cost | 41 | | | 49 | | | 13 | | | 16 | | Expected return on plan assets | (91) | | | (84) | | | (21) | | | (20) | | Amortization of prior service credit | — | | | — | | | (7) | | | (1) | | Amortization of actuarial net loss (gain) | 29 | | | 36 | | | (6) | | | (4) | | Net periodic benefit cost (income), excluding below | (9) | | | 14 | | | (18) | | | (6) | | Multiemployer plans | 19 | | | 19 | | | — | | | — | | Settlement, termination and curtailment losses (a) | 5 | | | 2 | | | — | | | — | | Net periodic benefit cost (income) | $ | 15 | | | $ | 35 | | | $ | (18) | | | $ | (6) | | (a) During the three months ended September 30, 2021 and 2020, pension benefits incurred settlement charges of approximately $5 million and $2 million, respectively, due to lump sum payments to certain individuals. |
The following table reflects the components of net periodic benefit cost (income) for the nine months ended September 30, 2021 and 2020: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pension Benefits | | Other Benefits | (In millions) | | 2021 | | 2020 | | 2021 | | 2020 | Service cost | | $ | 40 | | | $ | 38 | | | $ | 9 | | | $ | 9 | | Interest cost | | 122 | | | 145 | | | 37 | | | 48 | | Expected return on plan assets | | (269) | | | (249) | | | (61) | | | (60) | | Amortization of prior service cost | | 1 | | | 1 | | | (21) | | | (5) | | Amortization of actuarial net loss (gain) | | 104 | | | 108 | | | (18) | | | (12) | | Net periodic benefit cost (income), excluding below | | (2) | | | 43 | | | (54) | | | (20) | | Multiemployer plans | | 56 | | | 58 | | | — | | | — | | Settlement, termination and curtailment losses (a) | | 8 | | | 10 | | | — | | | — | | Net periodic benefit cost (income) | | $ | 62 | | | $ | 111 | | | $ | (54) | | | $ | (20) | | (a) During the nine months ended September 30, 2021, the pension plan incurred settlement and curtailment charges of approximately $8 million due to lump sum payments to certain individuals and the sale of Transtar. For the nine months ended September 30, 2020 the pension plan incurred settlement and special termination charges of approximately $10 million due to workforce restructuring and lump sum payments made to certain individuals. |
|