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Employee Benefit Plans
 3 Months Ended
Mar. 31, 2024
Retirement Benefits [Abstract]  
Employee Benefit Plans
Note 14—Employee Benefit Plans
Pension and Postretirement Plans
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 March 31
Service cost
$12 10 13 10 — — 
Interest cost
19 29 19 28 1 1 
Expected return on plan assets
(16)(41)(15)(37)
Amortization of prior service credit
— — — — (9)(9)
Recognized net actuarial loss (gain)
2 14 3 17 — (1)
Settlements
— — 4 — 
Net periodic benefit cost
$17 12 24 18 (8)(9)
The components of net periodic benefit cost, other than the service cost component, are included in the "Other expenses" line of our consolidated income statement.