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Goodwill and Other Intangible Assets | 12 Months Ended
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Dec. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and Other Intangible Assets | Goodwill and Other Intangible Assets Goodwill The following table shows the carrying amount of goodwill by reportable segment as of December 31, 2025 and 2024:
| Ammonia |  | Granular Urea |  | UAN |  | AN |  | Other |  | Total
| (in millions)
Balance as of December 31, 2024 | $ | 980 |  |  | $ | 828 |  |  | $ | 576 |  |  | $ | 69 |  |  | $ | 39 |  |  | $ | 2,492 |
Effect of exchange rate changes | 1 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 1 |
Balance as of December 31, 2025 | $ | 981 |  |  | $ | 828 |  |  | $ | 576 |  |  | $ | 69 |  |  | $ | 39 |  |  | $ | 2,493 |
In November 2025, we experienced an incident in the AN upgrade area at our Yazoo City complex that required us to temporarily idle all production at the complex. We concluded that the incident necessitated evaluations of the long-lived assets within our North American AN asset group and the goodwill allocated to our North American AN reporting unit to determine if their fair value had declined to below their carrying value. The results of our goodwill impairment test concluded that the goodwill allocated to our North American AN reporting unit was not impaired. See Note 6—Property, Plant and Equipment—Net for additional information. Other Intangible Assets All of our identifiable intangible assets have definite lives and are presented on our consolidated balance sheets at gross carrying amount, net of accumulated amortization, as follows:
| December 31, 2025 |  | December 31, 2024
| Gross Carrying Amount |  | Accumulated Amortization |  | Net |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net
| (in millions)
Customer relationships | $ | 505 |  |  | $ | (91) |  |  | $ | 414 |  |  | $ | 505 |  |  | $ | (66) |  |  | $ | 439 |
Personal property tax agreement | 71 |  |  | (12) |  |  | 59 |  |  | 71 |  |  | (6) |  |  | 65 |
Carbon credits | — |  |  | — |  |  | — |  |  | 3 |  |  | — |  |  | 3 |
Total intangible assets | $ | 576 |  |  | $ | (103) |  |  | $ | 473 |  |  | $ | 579 |  |  | $ | (72) |  |  | $ | 507 |
Our customer relationships are being amortized over a weighted-average life of approximately 20 years. The intangible asset related to a favorable personal property tax agreement is being amortized over 12 years, representing the remaining term of the agreement as of December 1, 2023, the date of our acquisition of the Waggaman ammonia production facility. For the years ended December 31, 2025, 2024 and 2023, amortization expense of our definite-lived intangible assets was approximately $32 million, $32 million and $5 million, respectively. Total estimated amortization expense for each of the five succeeding fiscal years is as follows:
| Estimated Amortization Expense
| (in millions)
2026 | $ | 32 |
2027 | 32 |
2028 | 30 |
2029 | 29 |
2030 | 29 |

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-30/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-20/tableOfContent + Details
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