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Significant Accounting Policies (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Accounting Policies [Abstract] |  |  |
Net sales | $ 13,696.1 | $ 19,125.2 | $ 12,357.4
Sales And Receivables [Line Items] |  |  |
Canadian resources taxes and royalties included in cost of goods sold | 457.0 | 1,000.0 | 301.5
Assets related to PIS and Cofins and income tax credits in Brazil | $ 136.5 | 105.0 |
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 | $ 193.1 | 244.4 |
Canpotex |  |  |
Accounting Policies [Abstract] |  |  |
Net sales | $ 1,300.0 | $ 3,000.0 | $ 1,100.0

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