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Business Segments (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Segment Reporting Information [Line Items] |  |  |
Net sales | $ 13,696.1 | $ 19,125.2 | $ 12,357.4
Intersegment Sales | 0.0 | 0.0 | 0.0
Revenues | 13,696.1 | 19,125.2 | 12,357.4
Gross margin | 2,210.6 | 5,755.8 | 3,200.3
Canadian resource taxes) | 403.4 | 927.9 | 259.5
Gross margin (excluding Canadian resource taxes) | 2,614.0 | 6,683.7 | 3,459.8
Restructuring and related cost, incurred costs | 0.0 | 0.0 | 158.1
Operating (loss) earnings | 1,338.1 | 4,785.3 | 2,468.5
Capital expenditures | 1,402.4 | 1,247.3 | 1,288.6
Depreciation, depletion and amortization expense | 960.6 | 933.9 | 812.9
Equity in net earnings of nonconsolidated companies | 60.3 | 196.0 | 7.8
Assets | 23,032.8 | 23,386.0 | 22,036.4
Phosphates Segment |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 3,894.5 | 4,546.4 | 3,889.7
Intersegment Sales | 829.8 | 1,637.8 | 1,033.2
Revenues | 4,724.3 | 6,184.2 | 4,922.9
Gross margin | 702.1 | 1,759.0 | 1,305.4
Canadian resource taxes) | 0.0 | 0.0 | 0.0
Gross margin (excluding Canadian resource taxes) | 702.1 | 1,759.0 | 1,305.4
Restructuring and related cost, incurred costs |  |  | 0.0
Operating (loss) earnings | 375.7 | 1,347.2 | 1,179.8
Segment, Expenditure, Addition to Long-Lived Assets | 625.9 | 631.8 | 649.9
Depreciation, depletion and amortization expense | 485.7 | 485.1 | 428.7
Equity in net earnings of nonconsolidated companies | 56.4 | 192.4 | 5.4
Assets | 10,295.9 | 9,570.5 | 8,776.4
Potash Segment |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 3,203.1 | 5,122.8 | 2,587.9
Intersegment Sales | 30.5 | 85.7 | 38.9
Revenues | 3,233.6 | 5,208.5 | 2,626.8
Gross margin | 1,215.0 | 2,843.0 | 1,057.5
Canadian resource taxes) | 403.4 | 927.9 | 259.5
Gross margin (excluding Canadian resource taxes) | 1,618.4 | 3,770.9 | $ 1,317.0
Restructuring, Incurred Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  | Operating (loss) earnings
Operating (loss) earnings | 1,151.5 | 2,767.7 | $ 836.6
Segment, Expenditure, Addition to Long-Lived Assets | 357.4 | 281.6 | 410.1
Depreciation, depletion and amortization expense | 299.0 | 307.3 | 267.8
Equity in net earnings of nonconsolidated companies | 0.0 | 0.0 | 0.0
Assets | 8,971.9 | 9,582.2 | 8,312.8
Mosaic Fertilizantes |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 5,684.7 | 8,287.2 | 5,088.5
Intersegment Sales | 0.0 | 0.0 | 0.0
Revenues | 5,684.7 | 8,287.2 | 5,088.5
Gross margin | 211.6 | 1,045.6 | 842.7
Canadian resource taxes) | 0.0 | 0.0 | 0.0
Gross margin (excluding Canadian resource taxes) | 211.6 | 1,045.6 | 842.7
Restructuring and related cost, incurred costs |  |  | 0.0
Operating (loss) earnings | 74.5 | 910.4 | 745.9
Segment, Expenditure, Addition to Long-Lived Assets | 336.3 | 306.4 | 216.1
Depreciation, depletion and amortization expense | 165.5 | 125.5 | 101.2
Equity in net earnings of nonconsolidated companies | 0.0 | 0.0 | 0.0
Assets | 5,256.3 | 5,562.7 | 4,908.2
Corporate Eliminations And Other Segment |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 913.8 | 1,168.8 | 791.3
Intersegment Sales | (860.3) | (1,723.5) | (1,072.1)
Revenues | 53.5 | (554.7) | (280.8)
Gross margin | 81.9 | 108.2 | (5.3)
Canadian resource taxes) | 0.0 | 0.0 | 0.0
Gross margin (excluding Canadian resource taxes) | 81.9 | 108.2 | (5.3)
Restructuring and related cost, incurred costs |  |  | 0.0
Operating (loss) earnings | (263.6) | (240.0) | (293.8)
Segment, Expenditure, Addition to Long-Lived Assets | 82.8 | 27.5 | 12.5
Depreciation, depletion and amortization expense | 10.4 | 16.0 | 15.2
Equity in net earnings of nonconsolidated companies | 3.9 | 3.6 | 2.4
Assets | (1,491.3) | (1,329.4) | 39.0
Corporate Eliminations And Other Segment | China and India distribution operations |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 898.9 | 1,100.0 | 730.1
Gross margin | $ (16.8) | $ 130.9 | $ 141.6

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