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Significant Accounting Policies (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Accounting Policies [Abstract] |  |  |  |
Net sales |  | $ 11,122.8 | $ 13,696.1 | $ 19,125.2
Sales And Receivables [Line Items] |  |  |  |
Canadian resources taxes and royalties included in cost of goods sold |  | 272.7 | 457.0 | 1,000.0
Assets related to PIS and Cofins and income tax credits in Brazil |  | $ 96.2 | 136.5 |
Minimum | Machinery and equipment |  |  |  |
Sales And Receivables [Line Items] |  |  |  |
Useful life |  | 3 years |  |
Minimum | Buildings and Leashold Improvements |  |  |  |
Sales And Receivables [Line Items] |  |  |  |
Useful life |  | 3 years |  |
Maximum |  |  |  |
Sales And Receivables [Line Items] |  |  |  |
Duration of short term investments in number of days |  | 90 days |  |
Maximum | Machinery and equipment |  |  |  |
Sales And Receivables [Line Items] |  |  |  |
Useful life |  | 25 years |  |
Maximum | Buildings and Leashold Improvements |  |  |  |
Sales And Receivables [Line Items] |  |  |  |
Useful life |  | 40 years |  |
Canpotex |  |  |  |
Sales And Receivables [Line Items] |  |  |  |
Accounts Receivable, Related Parties, Current |  | $ 65.1 | 193.1 |
Canpotex |  |  |  |
Accounting Policies [Abstract] |  |  |  |
Net sales | [1],[2] |  | $ 1,300.0 | $ 3,000.0
[1] | Canpotex sales to the ultimate third-party customers are made to customers in various countries. The countries with the largest portion of third-party customer sales are Brazil, China, India, and Indonesia.
[2] | Revenues are attributed to countries based on location of customer.

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