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Employee Benefit Plans (Tables)
9 Months Ended
Sep. 30, 2022
Retirement Benefits [Abstract]  
Schedule of Components of Net Periodic Benefit Cost
Millions of Dollars
Pension Benefits
Other Benefits
2022202120222021
U.S.
Int'l.
U.S.
Int'l.
Components of Net Periodic Benefit Cost
Three Months Ended September 30
Service cost
$13 13 17 15  — 
Interest cost
18 19 12 19 1 
Expected return on plan assets
(10)(31)(22)(30)
Amortization of prior service credit
 (1)— — (9)(9)
Recognized net actuarial loss
6 2  — 
Settlements
9  28 — 
Net periodic benefit cost
$36 2 44 12 (8)(8)
Nine Months Ended September 30
Service cost$45 39 56 46 1 
Interest cost
42 61 40 59 3 
Expected return on plan assets
(36)(99)(66)(90)
Amortization of prior service credit
 (1)— — (29)(28)
Recognized net actuarial loss
17 6 36 24  
Settlements
31  72 — 
Curtailments
  12 —  — 
Special Termination Benefits
  —  — 
Net periodic benefit cost$99 6 159 39 (25)(23)
Schedule of Discount Rates
The relevant assumptions are summarized in the following table:


September 30
2022
December 31
2021
Expected return on plan assets (U.S. qualified pension plan)
5.30 %3.40 
Relevant discount rates
U.S. qualified pension plan
5.65 %2.85 
U.S. nonqualified pension plan
5.60 2.50