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Employee Benefits
 9 Months Ended
Sep. 30, 2021
Retirement Benefits [Abstract]  
Employee Benefits EMPLOYEE BENEFITS
Pension and other defined contribution retirement plan expenses included the following components:
(DOLLARS IN MILLIONS)U.S. Plans
Three Months Ended September 30,Nine Months Ended September 30,
2021202020212020
Service cost for benefits earned(1)
$— $— $1 $1 
Interest cost on projected benefit obligation(2)
62 4 68 12 
Expected return on plan assets(2)
(92)(7)(102)(21)
Net amortization and deferrals(2)
23 2 27 6 
Net periodic benefit (income) cost$(7)$(1)$(6)$(2)
(DOLLARS IN MILLIONS)Non-U.S. Plans
Three Months Ended September 30,Nine Months Ended September 30,
2021202020212020
Service cost for benefits earned(1)
$10 $6 $32 $18 
Interest cost on projected benefit obligation(2)
3 3 8 9 
Expected return on plan assets(2)
(19)(12)(44)(35)
Net amortization and deferrals(2)
5 4 15 12 
Net periodic benefit (income) cost$(1)$1 $11 $4 
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(1)Included as a component of Operating profit.
(2)Included as a component of Other (income) expense, net.

The amounts of interest cost, expected return and net amortization and deferrals have been updated to reflect the correction of certain prior period amounts. The aggregate amount of the correction was approximately $17 million for the three and nine months ended September 30, 2021.
The Company expects to contribute a total of $4 million to its U.S. pension plans and a total of $25 million to its non-U.S. pension plans during 2021. During the nine months ended September 30, 2021, no contributions were made to the qualified U.S. pension plans, $18 million of contributions were made to the non-U.S. pension plans, and $3 million of benefit payments were made with respect to the Company's non-qualified U.S. pension plan.
Income (expense) recognized for postretirement benefits other than pensions included the following components:
 Three Months Ended September 30,Nine Months Ended September 30,
(DOLLARS IN MILLIONS)2021202020212020
Interest cost on projected benefit obligation$6 $— $7 $1 
Net amortization and deferrals(16)(1)(18)(3)
Total postretirement benefit income$(10)$(1)$(11)$(2)
The Company expects to contribute $4 million to its postretirement benefits other than pension plans during 2021. In the nine months ended September 30, 2021, $3 million of contributions were made.