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Employee Benefits (Tables)
 6 Months Ended
Jun. 30, 2022
Retirement Benefits [Abstract]  
Components of Net Periodic Benefit Cost
The components of net periodic benefit costs for 2022 and 2021 are as follows:
 Three Months Ended
June 30		Six Months Ended
June 30
 2022202120222021
(Millions of dollars)(Millions of dollars)
Pension Benefits
United States
Service cost$117 $108 $235 $225 
Interest cost69 64 135 119 
Expected return on plan assets(162)(145)(323)(294)
Amortization of prior service costs (credits) 1 — 1 1 
Amortization of actuarial losses (gains)60 73 125 177 
Settlement losses21 151 107 468 
Total United States106 251 280 696 
International
Service cost21 37 43 71 
Interest cost35 36 71 69 
Expected return on plan assets(44)(43)(92)(89)
Amortization of prior service costs (credits)1 2 3 4 
Amortization of actuarial losses (gains)4 14 8 24 
Settlement losses(9)— (9)— 
Total International8 46 24 79 
Net Periodic Pension Benefit Costs$114 $297 $304 $775 
Other Benefits*
Service cost$10 $10 $21 $21 
Interest cost16 13 31 26 
Amortization of prior service costs (credits)(7)(6)(13)(13)
Amortization of actuarial losses (gains)3 4 6 8 
Net Periodic Other Benefit Costs$22 $21 $45 $42 
* Includes costs for U.S. and international OPEB plans. Obligations for plans outside the United States are not significant relative to the company’s total OPEB obligation.