XML 41 R18.htm IDEA: XBRL DOCUMENT v3.25.0.1
Other Noncurrent Liabilities
 12 Months Ended
Dec. 31, 2024
Other Liabilities Disclosure [Abstract]  
Other Noncurrent Liabilities Other Non-Current Liabilities
Other non-current liabilities consisted of the following:
December 31, 2024December 31, 2023
Asset retirement obligations$84 $84 
Accrued environmental expense, long-term21 12 
Other53 20 
Other non-current liabilities$158 $116 
We record an asset retirement obligation for the estimated future cost to remove underground storage tanks. Revisions to the liability could occur due to changes in tank removal costs, tank useful lives or if federal and/or state regulators enact new guidance on the removal of such tanks. Changes in the carrying amount of asset retirement obligations for the years ended December 31, 2024 and 2023 were as follows:
Year Ended December 31,
20242023
Balance at beginning of year$84 $81 
Liabilities incurred4 — 
Liabilities settled(8)(1)
Accretion expense4 4 
Balance at end of year$84 $84