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Employee Benefit Plans (Tables)
9 Months Ended
Sep. 30, 2024
Retirement Benefits [Abstract]  
Schedule of Components of Net Periodic Benefit Cost
Millions of Dollars
Pension Benefits
Other Benefits
2024202320242023
U.S.
Int'l.
U.S.
Int'l.
Components of Net Periodic Benefit Cost
Three Months Ended September 30
Service cost
$12 9 12 10  — 
Interest cost
19 28 19 28 1 
Expected return on plan assets
(16)(41)(15)(38)
Amortization of prior service credit
  — — (10)(9)
Recognized net actuarial loss (gain)
1 15 16  (1)
Settlements
  — 
Net periodic benefit cost
$16 11 21 16 (9)(9)
Nine Months Ended September 30
Service cost$37 28 38 29 1 — 
Interest cost
57 85 58 85 4 
Expected return on plan assets
(49)(122)(44)(112)
Amortization of prior service credit
  — — (29)(28)
Recognized net actuarial loss (gain)
5 43 50  (3)
Settlements
  — 
Net periodic benefit cost$50 34 67 52 (24)(27)