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FAIR VALUE MEASUREMENTS (Tables)
3 Months Ended
Mar. 31, 2024
Fair Value Disclosures [Abstract]  
Recurring Fair Value Measurements The following tables set forth our recurring fair value measurements as of the dates indicated:
 March 31, 2024
 Level 1Level 2Level 3Total - GrossNetting (a)Total - Net
 
(Millions of dollars)
Derivative assets     
Commodity contracts$58 $57 $ $115 $(114)$1 
Total derivative assets$58 $57 $ $115 $(114)$1 
Derivative liabilities
     
 Commodity contracts$(94)$(83)$ $(177)$177 $ 
Total derivative liabilities$(94)$(83)$ $(177)$177 $ 
(a) - Derivative assets and liabilities are presented in our Consolidated Balance Sheet on a net basis. We net derivative assets and liabilities when a legally enforceable master-netting arrangement exists between the counterparty to a derivative contract and us. At March 31, 2024, we held no cash and posted cash of $129 million with various counterparties, including $63 million of cash collateral that is offsetting derivative net liability positions under master-netting arrangements in the table above. The remaining $66 million of cash collateral in excess of derivative net liability positions is included in other current assets in our Consolidated Balance Sheet.

 December 31, 2023
 Level 1Level 2Level 3Total - GrossNetting (a)Total - Net
 (Millions of dollars)
Derivative assets      
Commodity contracts$109 $68 $— $177 $(125)$52 
Total derivative assets$109 $68 $— $177 $(125)$52 
Derivative liabilities
      
Commodity contracts$(40)$(44)$— $(84)$84 $— 
Total derivative liabilities$(40)$(44)$— $(84)$84 $— 
(a) - Derivative assets and liabilities are presented in our Consolidated Balance Sheet on a net basis. We net derivative assets and liabilities when a legally enforceable master-netting arrangement exists between the counterparty to a derivative contract and us. At December 31, 2023, we posted no cash and held cash of $41 million with various counterparties, which offsets our derivative net asset position under master netting arrangements as shown in the table above.