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PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS
 3 Months Ended
Mar. 31, 2024
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]  
PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS
The following table summarizes the components of net periodic pension cost and the cost of other postretirement benefits for the periods presented:

Three Months Ended March 31,
United States
Pension Benefits		Foreign
Pension Benefits		Other Postretirement
Benefits
Millions of dollars202420232024202320242023
Service cost$1 $1 $1 $1 $— $— 
Interest cost25 29 7 6 2 2 
Expected return on plan assets(37)(36)(6)(6)— — 
Amortization:
Actuarial loss10 9 1 2 — — 
Prior service credit— — — — — (11)
Settlement and curtailment (gain) loss— — — — — — 
Net periodic benefit cost (credit)$(1)$3 $3 $3 $2 $(9)

The following table summarizes the net periodic cost recognized in operating profit and interest and sundry (income) expense for the periods presented:
Three Months Ended March 31,
United States
Pension Benefits		Foreign
Pension Benefits		Other Postretirement
Benefits
Millions of dollars202420232024202320242023
Operating profit (loss)$1 $1 $1 $1 $— $— 
Interest and sundry (income) expense(2)2 2 2 2 (9)
Net periodic benefit cost$(1)$3 $3 $3 $2 $(9)
401(k) Defined Contribution Plan
During the first quarter of 2024, we announced that the Company matching contributions for our 401(k) defined contribution plan, equal to up to 7% of participants' eligible compensation, covering substantially all U.S. employees will be contributed in company stock starting from March 2024.