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Pension Benefits
3 Months Ended
Mar. 31, 2021
Retirement Benefits [Abstract]  
Pension Benefits Pension BenefitsWe sponsor qualified and supplemental (non-qualified) noncontributory defined benefit pension plans covering certain full-time salaried and hourly U.S. employees.  The most significant of these plans, the YUM Retirement Plan (the Plan), is funded. We fund our other U.S. plan as benefits are paid.  The Plan and our non-qualified plan in the U.S. are closed to new salaried participants.  
The components of net periodic benefit cost associated with our U.S. pension plans are as follows:

 Quarter ended
 20212020
Service cost$$
Interest cost
Expected return on plan assets(11)(11)
Amortization of net loss
Amortization of prior service cost
Net periodic benefit cost$$