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Pension and Other Postretirement Benefits
 6 Months Ended
Jun. 30, 2022
Retirement Benefits [Abstract]  
Pension and Other Postretirement Benefits Pension and Other Postretirement Benefits
Pension and other postretirement benefit costs for the three and six months ended June 30, 2022 and 2021 were as follows:

Three Months EndedSix Months Ended
June 30,June 30,
PensionOther Postretirement BenefitsPensionOther Postretirement Benefits
In millions20222021202220212022202120222021
Components of net periodic benefit cost:
Service cost$12 $14 $1 $2 $24 $27 $3 $4 
Interest cost12 10 4 2 25 20 7 5 
Expected return on plan assets(25)(26)(7)(6)(52)(51)(13)(13)
Amortization of actuarial loss (gain)6 13 (1)— 13 26 (2)— 
Amortization of prior service cost— 1 — — — 1 — — 
Total net periodic benefit cost$5 $12 $(3)$(2)$10 $23 $(5)$(4)

The service cost component of net periodic benefit cost is presented within Cost of revenue and Selling, administrative, and research and development expenses in the Statement of Income while the other components of net periodic benefit cost are presented within Other income (expense).

The Company expects to contribute approximately $14 million to its pension plans and $4 million to its other postretirement benefit plans in 2022. As of June 30, 2022, contributions of $6 million to pension plans and $2 million to other postretirement benefit plans have been made.