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Asset Retirement Obligations	12 Months Ended
Asset Retirement Obligations	Dec. 31, 2025
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligations	Asset Retirement Obligations Asset retirement obligations (AROs) are legal obligations associated with the retirement of long-lived assets that result from the acquisition, construction, development or normal operation of such assets. AROs are initially recognized as incurred when sufficient information exists to estimate fair value. We have AROs at our nitrogen manufacturing complexes and at our distribution and storage facilities that are conditional upon cessation of operations. These AROs include certain decommissioning activities as well as the removal and disposal of certain chemicals, waste materials, structures, equipment, vessels, piping and storage tanks. Also included are reclamation of land and the closure of certain effluent ponds and/or waste storage areas. The most recent estimate of the aggregate cost of conditional AROs for our complexes and facilities, expressed in 2025 dollars, is approximately $142 million, which excludes recorded AROs discussed below. We have not recorded a liability for these conditional AROs as of December 31, 2025, because we do not believe there is currently a reasonable basis for estimating a date or range of dates of cessation of operations at our nitrogen manufacturing facilities or our distribution and storage facilities, which is necessary in order to estimate fair value. In reaching this conclusion, we considered the historical performance of each complex or facility and considered factors such as planned maintenance, asset replacements and upgrades of plant and equipment, which if conducted as in the past, can extend the physical lives of our nitrogen manufacturing facilities and our distribution and storage facilities indefinitely. We also considered the possibility of changes in technology, risk of obsolescence, and availability of raw materials in arriving at our conclusion. In the first quarter of 2025, we completed the sale of our facility in Ince, United Kingdom, which had been permanently closed since 2022. The sale agreement included indemnification provisions that released us from all known and unknown environmental liabilities. Upon transfer of the environmental permit to the new owner in the third quarter of 2025, the recorded ARO liability of $4 million was derecognized. As of December 31, 2025, amounts recorded for AROs, which relate to certain assets for which a fair value can be estimated, were not material.