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Employee Benefits (Notes)
 3 Months Ended
Mar. 31, 2022
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]  
Employee Benefits Employee Benefits
We have a defined benefit pension plan that covers certain U.S. employees (the “Domestic Pension Plan”). We also have numerous funded and unfunded plans outside the U.S. The Interpublic Limited Pension Plan in the U.K. is a defined benefit plan and is our most material foreign pension plan in terms of the benefit obligation and plan assets. Some of our domestic and foreign subsidiaries provide postretirement health benefits and life insurance to eligible employees and, in certain cases, their dependents. The domestic postretirement benefit plan is our most material postretirement benefit plan in terms of the benefit obligation. Certain immaterial foreign pension and postretirement benefit plans have been excluded from the table below.
The components of net periodic cost for the Domestic Pension Plan, the significant foreign pension plans and the domestic postretirement benefit plan are listed below.
 Domestic Pension PlanForeign Pension PlansDomestic Postretirement Benefit Plan
Three Months Ended March 31,202220212022202120222021
Service cost$0.0 $0.0 $1.1 $1.1 $0.0 $0.0 
Interest cost0.7 0.7 2.4 2.0 0.2 0.2 
Expected return on plan assets(1.2)(1.4)(5.3)(5.2)0.0 0.0 
Settlements0.0 0.0 0.0 0.0 0.0 0.0 
Amortization of:
Unrecognized actuarial losses0.4 0.5 1.2 1.7 0.1 0.1 
Net periodic cost$(0.1)$(0.2)$(0.6)$(0.4)$0.3 $0.3 
The components of net periodic cost other than the service cost component are included in the line item “Other expense, net” in the Consolidated Statements of Operations.
During the three months ended March 31, 2022, we contributed $0.0 and $4.6 of cash to our domestic and foreign pension plans, respectively. For the remainder of 2022, we expect to contribute approximately $0.0 and $12.0 of cash to our domestic and foreign pension plans, respectively.