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v3.19.1

Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Jan. 01, 2018
Sales And Receivables [Line Items] |  |  |  |
Receivables, net | $ 838.5 | $ 642.6 |  | $ 660.8
Canadian resources taxes and royalties included in cost of goods sold | 198.8 | 142.0 | $ 121.6 |
Assets related to PIS and Cofins and income tax credits in Brazil | 90.4 |  |  |
Expected Annualized Impact Of Change In Estimate On Depreciation And Operating Income | 65.0 |  |  |
Accounts Payable and Accrued Liabilities, Current [Abstract] |  |  |  |
Structured accounts payable arrangements | $ 572.8 | 386.2 |  |
Minimum | Machinery and equipment |  |  |  |
Useful life | 3 years |  |  |
Minimum | Buildings and Leashold Improvements |  |  |  |
Useful life | 3 years |  |  |
Maximum |  |  |  |
Duration of short term investments in number of days | 90 days |  |  |
Maximum | Machinery and equipment |  |  |  |
Useful life | 25 years |  |  |
Maximum | Buildings and Leashold Improvements |  |  |  |
Useful life | 40 years |  |  |
Canpotex |  |  |  |
Sales And Receivables [Line Items] |  |  |  |
Net sales | $ 820.1 | 700.6 | $ 604.5 |
Receivables, net |  | $ 37.8 |  |

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