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Fair Value Measurement (Tables)
12 Months Ended
Dec. 31, 2024
Fair Value Disclosures [Abstract]  
Fair Value Hierarchy for Gross Financial Assets and Liabilities
The following table summarizes the fair value hierarchy for gross financial assets and liabilities (i.e., unadjusted where the right of setoff exists for commodity derivatives accounted for at fair value on a recurring basis):
Millions of Dollars
December 31, 2024December 31, 2023
Level 1Level 2Level 3TotalLevel 1Level 2Level 3Total
Assets
Investments in debt securities$261 1,290  1,551 278 1,146 — 1,424 
Commodity derivatives201 252 35 488 308 301 115 724 
Total assets$462 1,542 35 2,039 586 1,447 115 2,148 
Liabilities
Commodity derivatives$275 160 45 480 350 283 14 647 
Contingent consideration  145 145 — — 312 312 
Total liabilities$275 160 190 625 350 283 326 959 
Fair Value Measurement Inputs and Valuation Techniques
The range and arithmetic average of the significant unobservable input used in the Level 3 fair value measurement was as follows:

Fair Value
(Millions of
Dollars)
Valuation
Technique
Unobservable Input
Range
(Arithmetic Average)
Contingent Consideration - Surmont as of:
December 31, 2024$145 Discounted cash flowCommodity price outlook* ($/BOE)
$48.63 - $57.53 ($53.38)
December 31, 2023312 
$45.48 - $63.04 ($57.45)
*Commodity price outlook based on a combination of external pricing service companies' outlooks and our internal outlook.
Commodity Derivative Balances Subject to Right of Setoff
The following table summarizes those commodity derivative balances subject to the right of setoff as presented on our consolidated balance sheet. We have elected to offset the recognized fair value amounts for multiple derivative instruments executed with the same counterparty in our financial statements when a legal right of setoff exists.
Millions of Dollars
Amounts Subject to Right of Setoff
Gross
Amounts
Recognized
Amounts Not
Subject to
Right of Setoff
Gross
Amounts
Gross
Amounts
Offset
Net
Amounts
Presented
Cash
Collateral
Net
Amounts
December 31, 2024
Assets$488  488 278 210  210 
Liabilities480  480 278 202 73 129 
December 31, 2023
Assets$724 39 685 375 310 306 
Liabilities647 34 613 375 238 47 191 
Schedule of Net Fair Value of Financial Instruments
The following table summarizes the net fair value of financial instruments (i.e., adjusted where the right of setoff exists for commodity derivatives):
Millions of Dollars
Carrying AmountFair Value
2024202320242023
Financial assets
Commodity derivatives210 345 210 345 
Investments in debt securities1,551 1,424 1,551 1,424 
Financial liabilities
Total debt, excluding finance leases23,384 17,808 22,997 18,621 
Commodity derivatives129 225 129 225