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FAIR VALUE MEASUREMENTS (Tables)
12 Months Ended
Dec. 31, 2023
Fair Value Disclosures [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis
Assets and liabilities measured at fair value on a recurring basis at December 31, 2023 and 2022 are as follows:
Total Cost BasisQuoted Prices In
Active Markets for
Identical Assets
(Level 1)
Significant Other
Observable Inputs
(Level 2)
Total Fair Value
Millions of dollars20232022202320222023202220232022
Short-term investments (1)
$1,126 $1,209 $867 $934 $259 $275 $1,126 $1,209 
Net derivative contracts —  — (105)(44)(105)(44)
(1)Short-term investments are primarily comprised of money market funds and highly liquid, low risk investments with initial maturities less than 90 days.