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v3.20.4

Principal Accounting Policies and Related Financial Information (Details) shares in Millions, $ in Millions |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Nov. 15, 2019 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2020 USD ($) class | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Oct. 15, 2018 shares
Nature of Operations |  |  |  |  |  |
Number of major classes of crop protection | class |  |  | 3 |  |  |
Trade receivable, net of allowance |  |  |  |  |  |
Allowance for trade receivable |  | $ 26.3 | $ 27.9 | $ 26.3 | $ 22.4 |
Allowance for long-term receivables |  | 61.1 | 24.7 | 61.1 | 60.5 |
Additions — charged to expense |  |  | $ 4.7 | 21.2 | 71.4 |
Investments |  |  |  |  |  |
Maximum ownership percentage for equity method investments |  |  | 50.00% |  |  |
Capitalized Interest |  |  |  |  |  |
Capitalized interest costs |  |  | $ 3.5 | 4.7 | 4.1 |
Asset Retirement Obligation [Abstract] |  |  |  |  |  |
Asset retirement obligation |  | 35.7 | 30.7 | 35.7 |  |
Environmental obligations |  |  |  |  |  |
Charges to expense for new losses |  |  | 53.2 | $ 138.8 | $ 178.2 |
Pocatello |  |  |  |  |  |
Environmental obligations |  |  |  |  |  |
Charges to expense for new losses | $ 72.8 | $ 72.8 | $ 82.6 |  |  |
Minimum |  |  |  |  |  |
Goodwill and Intangible Assets |  |  |  |  |  |
Weighted avg. useful life remaining at December 31, 2020 |  |  | 3 years |  |  |
Maximum |  |  |  |  |  |
Goodwill and Intangible Assets |  |  |  |  |  |
Weighted avg. useful life remaining at December 31, 2020 |  |  | 20 years |  |  |
Land Improvements |  |  |  |  |  |
Property, plant and equipment and capitalized software |  |  |  |  |  |
Useful lives |  |  | 20 years |  |  |
Building | Minimum |  |  |  |  |  |
Property, plant and equipment and capitalized software |  |  |  |  |  |
Useful lives |  |  | 15 years |  |  |
Building | Maximum |  |  |  |  |  |
Property, plant and equipment and capitalized software |  |  |  |  |  |
Useful lives |  |  | 40 years |  |  |
Machinery and Equipment | Minimum |  |  |  |  |  |
Property, plant and equipment and capitalized software |  |  |  |  |  |
Useful lives |  |  | 3 years |  |  |
Machinery and Equipment | Maximum |  |  |  |  |  |
Property, plant and equipment and capitalized software |  |  |  |  |  |
Useful lives |  |  | 18 years |  |  |
Software Development | Minimum |  |  |  |  |  |
Property, plant and equipment and capitalized software |  |  |  |  |  |
Useful lives |  |  | 3 years |  |  |
Software Development | Maximum |  |  |  |  |  |
Property, plant and equipment and capitalized software |  |  |  |  |  |
Useful lives |  |  | 10 years |  |  |
Livent |  |  |  |  |  |
Nature of Operations |  |  |  |  |  |
Shares owned by parent (in shares) | shares |  |  |  |  |  | 123
Outstanding shares of parent, percentage |  |  |  |  |  | 84.00%

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