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Leases
 12 Months Ended
Dec. 31, 2024
Leases [Abstract]  
Leases Leases
We have operating leases for certain property and equipment under various noncancelable agreements, the most significant of which are rail car leases and barge tow charters for the distribution of our products. The rail car leases currently have minimum terms ranging from one to eleven years and the barge tow charter commitments range from one to six years. Our rail car leases and barge tow charters commonly contain provisions for automatic renewal that can extend the lease term unless cancelled by either party. We also have operating leases for terminal and warehouse storage for our distribution system, some of which contain minimum throughput requirements. The storage agreements contain minimum terms generally ranging from one to four years and commonly contain provisions for automatic renewal thereafter unless cancelled by either party. The renewal provisions for our rail car leases, barge tow charters and terminal and warehouse storage agreements are not reasonably certain to be exercised.
The components of lease costs were as follows:
Year ended December 31,
 202420232022
 (in millions)
Operating lease cost$112 $113 $103 
Short-term lease cost40 30 48 
Variable lease cost5 4 6 
Total lease cost$157 $147 $157 
Supplemental cash flow information related to leases was as follows:
Year ended December 31,
 202420232022
 (in millions)
Operating cash flows - cash paid for amounts included in the measurement of operating lease liabilities$98 $107 $100 
Right-of-use (ROU) assets obtained in exchange for operating lease obligations107 103 106 
Supplemental balance sheet information related to leases was as follows:
December 31,
 20242023
 (in millions)
Operating lease ROU assets$266 $259 
Current operating lease liabilities$86 $96 
Operating lease liabilities189 168 
Total operating lease liabilities$275 $264 
Other information related to leases was as follows:
December 31,
 20242023
Operating leases
Weighted-average remaining lease term5 years5 years
Weighted-average discount rate5.0 %4.7 %
As of December 31, 2024, we have entered into four additional leases that have not yet commenced, with future minimum lease payments totaling $37 million with minimum terms ranging from five to seven years.
The following table reconciles the undiscounted cash flows for our operating leases to the operating lease liabilities recorded on our consolidated balance sheet as of December 31, 2024:
 Operating
lease payments
 (in millions)
2025$96 
202674 
202751 
202838 
202920 
Thereafter39 
Total lease payments318 
Less: imputed interest(43)
Present value of lease liabilities275 
Less: Current operating lease liabilities(86)
Operating lease liabilities$189