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Employee Benefit Plans (Tables)
6 Months Ended
Jun. 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 June 30
Service cost
$16 13 18 16 1 1
Interest cost
12 21 15 20 1 
Expected return on plan assets
(13)(34)(20)(30) — 
Amortization of prior service credit
  — — (10)(10)
Recognized net actuarial loss
5 2 12  
Settlements
18  42 —  — 
Net periodic benefit cost
$38 2 67 14 (8)(7)
Six Months Ended June 30
Service cost$32 26 39 31 1 
Interest cost
24 42 28 40 2 
Expected return on plan assets
(26)(68)(44)(60) — 
Amortization of prior service credit
  — — (20)(19)
Recognized net actuarial loss
11 4 27 16  
Settlements
22  44 —  — 
Curtailments
  12 —  — 
Special Termination Benefits
  —  — 
Net periodic benefit cost$63 4 115 27 (17)(15)
Schedule of Discount Rates
The relevant discount rates are summarized in the following table:


June 30
2022
December 31
2021
Relevant discount rates
U.S. qualified pension plan
4.85 %2.85 
U.S. nonqualified pension plan
4.70 2.50