v3.25.2
Pension and Postretirement Plans (Tables)
 6 Months Ended
Jun. 30, 2025
Retirement Benefits [Abstract]  
Schedule of Components of Net Periodic Benefit Cost
The components of net periodic benefit cost for the three and six months ended June 30, 2025 and 2024, were as follows:
 Millions of Dollars
 Pension BenefitsOther Benefits
 202520242025 2024 
U.S.Int’l.U.S.Int’l.
Components of Net Periodic Benefit Cost
Three Months Ended June 30
Service cost$30 3 29 4 1 — 
Interest cost32 10 29 8 2 2 
Expected return on plan assets(38)(12)(39)(11)— — 
Amortization of net actuarial loss (gain)4 (1)3 — (2)(1)
Settlements2 — 3 — — — 
Net periodic benefit cost*$30 — 25 1 1 1 
Six Months Ended June 30
Service cost$61 6 58 7 1 1 
Interest cost64 18 57 16 4 4 
Expected return on plan assets(76)(23)(77)(22)— — 
Amortization of net actuarial loss (gain)8 (1)6 — (3)(2)
Settlements4 — 4 — — — 
Net periodic benefit cost*$61 — 48 1 2 3 
* Included in the “Operating expenses” and “Selling, general and administrative expenses” line items on our consolidated statement of income.