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Fair Value Measurement (Tables)
6 Months Ended
Jun. 30, 2023
Fair Value Disclosures [Abstract]  
Schedule of 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
June 30, 2023December 31, 2022
Level 1
Level 2
Level 3
Total
Level 1
Level 2
Level 3
Total
Assets
Investments in debt securities
$275 975  1,250 178 1,044 — 1,222 
Commodity derivatives
479 366 130 975 958 951 128 2,037 
Total assets
$754 1,341 130 2,225 1,136 1,995 128 3,259 
Liabilities
Commodity derivatives$509 370 18 897 906 843 261 2,010 
Total liabilities
$509 370 18 897 906 843 261 2,010 
Schedule of 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
June 30, 2023
Assets$975 33 942 548 394 5 389 
Liabilities897 27 870 548 322 44 278 
December 31, 2022
Assets$2,037 39 1,998 1,176 822 37 785 
Liabilities2,010 20 1,990 1,176 814 52 762 
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 Amount
Fair Value
June 30
2023
December 31
2022
June 30
2023
December 31
2022
Financial assets
Commodity derivatives
422 824 422 824 
Investments in debt securities
1,250 1,222 1,250 1,222 
Financial liabilities
Total debt, excluding finance leases
15,247 15,323 15,623 15,545 
Commodity derivatives
305 782 305 782