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RETIREMENT AND DEFERRED COMPENSATION PLANS
 9 Months Ended
Sep. 30, 2021
Retirement Benefits [Abstract]  
RETIREMENT AND DEFERRED COMPENSATION PLANS RETIREMENT AND DEFERRED COMPENSATION PLANS
Effective January 1, 2021, our domestic noncontributory retirement plans were closed to new employees and employees who were rehired after December 31, 2020. These employees are instead eligible for additional contribution to their defined contribution 401(k) employee savings plan. All domestic employees with hire/rehire dates prior to January 1, 2021 are still eligible for the domestic pension plans and continue to accrue plan benefits after this date.

Components of Net Periodic Benefit Cost:
Domestic PlansForeign Plans
Three Months Ended September 30,2021202020212020
Service cost$4,074 $3,570 $2,037 $1,867 
Interest cost1,601 1,761 203 360 
Expected return on plan assets(3,060)(3,062)(675)(671)
Amortization of net loss2,498 1,422 568 544 
Amortization of prior service cost— — 34 101 
Net periodic benefit cost$5,113 $3,691 $2,167 $2,201 
Domestic PlansForeign Plans
Nine Months Ended September 30,2021202020212020
Service cost$12,242 $10,709 $6,186 $5,402 
Interest cost4,816 5,284 629 1,040 
Expected return on plan assets(9,197)(9,186)(2,119)(1,936)
Amortization of net loss7,502 4,264 1,748 1,572 
Amortization of prior service cost— — 123 293 
Net periodic benefit cost$15,363 $11,071 $6,567 $6,371 
The components of net periodic benefit cost, other than the service cost component, are included in the line Miscellaneous, net in the Condensed Consolidated Statements of Income.
Employer Contributions
We currently have no minimum funding requirements for our domestic and foreign plans. We contributed $1.0 million to our ongoing domestic supplemental executive retirement plan (SERP) annuity contracts during the nine months ended September 30, 2021 and we do not expect additional significant payments during 2021. We have contributed approximately $2.8 million to our foreign defined benefit plans during the nine months ended September 30, 2021 and do not expect additional significant contributions during 2021.