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Employee Benefit Plans
 6 Months Ended
Jun. 30, 2022
Retirement Benefits [Abstract]  
Employee Benefit Plans
Note 14—Employee Benefit Plans
Pension and Postretirement Plans
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 1 
Expected return on plan assets
(13)(34)(20)(30)— — 
Amortization of prior service credit
— — — — (10)(10)
Recognized net actuarial loss
5 2 12 8 — 1 
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 1 
Interest cost
24 42 28 40 2 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 — 1 
Settlements
22 — 44 — — — 
Curtailments
— — 12 — — — 
Special Termination Benefits
— — 9 — — — 
Net periodic benefit cost$63 4 115 27 (17)(15)
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.
During the first six months of 2022, we contributed $44 million to our domestic benefit plans and $77 million to our international benefit plans. We expect our total contributions in 2022 to be approximately $95 million to our domestic qualified and nonqualified pension and postretirement benefit plans and $90 million to our international qualified and nonqualified pension and postretirement benefit plans.

During the three-month period ended June 30, 2022, lump-sum benefit payments exceeded the sum of service and interest costs for the year for the U.S. qualified pension plan and a U.S. nonqualified supplemental retirement plan. As a result, we recognized a proportionate share of prior actuarial losses from other comprehensive income as pension settlement expense of $18 million. In conjunction with the recognition of pension settlement expense, the fair market values of the pension plan assets were updated and the pension benefit obligations of the U.S. qualified pension plan and the U.S. nonqualified supplemental retirement plan were remeasured at June 30, 2022. At the measurement date, the net pension liability increased by $82 million, primarily a result of lower than premised return on assets, partially offset by an increase in the discount rate, resulting in a corresponding decrease to other comprehensive income.

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