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Pension Benefits (Tables)
3 Months Ended
Mar. 31, 2024
Retirement Benefits [Abstract]  
Components of Net Periodic Benefit Cost
The components of net periodic benefit cost associated with our U.S. pension plans are as follows:

 Quarter ended
 20242023
Service cost$$
Interest cost11 10 
Expected return on plan assets(13)(12)
Net periodic benefit cost (income)
$(1)$(1)