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Business Segments (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales |  | $ 8,681.7 |  | $ 8,906.3 |  | $ 9,587.3
Intersegment Sales |  | 0.0 |  | 0.0 |  | 0.0
Revenues |  | 8,681.7 |  | 8,906.3 |  | 9,587.3
Gross margin |  | 1,064.9 |  | 897.3 |  | 1,498.4
Canadian resource taxes) |  | 146.1 |  | 174.6 |  | 159.4
Gross margin (excluding Canadian resource taxes) |  | 1,211.0 |  | 1,071.9 |  | 1,657.8
Restructuring and related cost, incurred costs |  | 0.0 |  | 1,462.1 |  | 0.0
Operating (loss) earnings |  | 412.9 |  | (1,094.9) |  | 928.3
Capital expenditures |  | 1,170.6 |  | 1,272.2 |  | 954.5
Depreciation, depletion and amortization expense |  | 847.6 |  | 882.7 |  | 883.9
Equity in net (loss) of nonconsolidated companies |  | (93.8) |  | (59.4) |  | (4.5)
Assets |  | 19,789.8 |  | 19,298.5 | [1] | 20,119.2
Goodwill, Impairment Loss |  | 0.0 |  | 588.6 |  | 0.0
Phosphates Segment |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales |  | 2,543.5 |  | 2,416.6 |  | 3,106.3
Intersegment Sales |  | 572.9 |  | 824.7 |  | 780.0
Revenues |  | 3,116.4 |  | 3,241.3 |  | 3,886.3
Gross margin |  | 125.5 |  | (82.3) |  | 581.5
Canadian resource taxes) |  | 0.0 |  | 0.0 |  | 0.0
Gross margin (excluding Canadian resource taxes) |  | 125.5 |  | (82.3) |  | 581.5
Restructuring and related cost, incurred costs |  |  |  | 931.6 |  |
Operating (loss) earnings |  | (147.1) |  | (1,131.1) |  | 471.4
Capital expenditures |  | 538.1 |  | 545.2 |  | 393.9
Depreciation, depletion and amortization expense |  | 443.4 |  | 430.1 |  | 403.7
Equity in net (loss) of nonconsolidated companies |  | (94.1) |  | (60.1) |  | (4.6)
Assets |  | 7,022.1 | [1] | 7,183.5 | [1] | 7,877.3
Goodwill, Impairment Loss |  |  |  | 588.6 |  |
Potash Segment |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales |  | 1,988.6 |  | 2,081.7 |  | 2,154.8
Intersegment Sales |  | 30.7 |  | 32.1 |  | 19.1
Revenues |  | 2,019.3 |  | 2,113.8 |  | 2,173.9
Gross margin |  | 468.3 |  | 616.8 |  | 597.2
Canadian resource taxes) |  | 146.1 |  | 174.6 |  | 159.4
Gross margin (excluding Canadian resource taxes) |  | 614.4 |  | 791.4 |  | 756.6
Restructuring and related cost, incurred costs |  |  |  | 530.5 |  |
Operating (loss) earnings |  | 401.5 |  | 45.8 |  | 510.8
Capital expenditures |  | 478.2 |  | 540.1 |  | 410.5
Depreciation, depletion and amortization expense |  | 282.4 |  | 296.3 |  | 301.5
Equity in net (loss) of nonconsolidated companies |  | 0.0 |  | 0.0 |  | 0.0
Assets |  | 7,614.8 |  | 7,219.2 | [1] | 7,763.1
Goodwill, Impairment Loss |  |  |  | 0.0 |  |
Mosaic Fertilizantes |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales |  | 3,481.6 |  | 3,782.8 |  | 3,747.1
Intersegment Sales |  | 0.0 |  | 0.0 |  | 0.0
Revenues |  | 3,481.6 |  | 3,782.8 |  | 3,747.1
Gross margin |  | 419.6 |  | 290.1 |  | 382.9
Canadian resource taxes) |  | 0.0 |  | 0.0 |  | 0.0
Gross margin (excluding Canadian resource taxes) |  | 419.6 |  | 290.1 |  | 382.9
Restructuring and related cost, incurred costs |  |  |  | 0.0 |  |
Operating (loss) earnings |  | 346.5 |  | 132.5 |  | 240.6
Capital expenditures |  | 144.9 |  | 182.3 |  | 148.2
Depreciation, depletion and amortization expense |  | 105.7 |  | 135.8 |  | 158.5
Equity in net (loss) of nonconsolidated companies |  | 0.0 |  | 0.0 |  | 0.0
Assets |  | 4,127.7 |  | 3,974.9 | [1] | 3,952.4
Goodwill, Impairment Loss |  |  |  | 0.0 |  |
Corporate Eliminations And Other Segment |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales |  | 668.0 |  | 625.2 |  | 579.1
Intersegment Sales |  | (603.6) |  | (856.8) |  | (799.1)
Revenues |  | 64.4 |  | (231.6) |  | (220.0)
Gross margin |  | 51.5 |  | 72.7 |  | (63.2)
Canadian resource taxes) |  | 0.0 |  | 0.0 |  | 0.0
Gross margin (excluding Canadian resource taxes) |  | 51.5 |  | 72.7 |  | (63.2)
Restructuring and related cost, incurred costs | [2] |  |  | 0.0 |  |
Operating (loss) earnings |  | (188.0) |  | (142.1) |  | (294.5)
Capital expenditures |  | 9.4 |  | 4.6 |  | 1.9
Depreciation, depletion and amortization expense |  | 16.1 |  | 20.5 |  | 20.2
Equity in net (loss) of nonconsolidated companies |  | 0.3 |  | 0.7 |  | 0.1
Assets |  | 1,025.2 |  | 920.9 | [1] | 526.4
Goodwill, Impairment Loss |  |  |  | 0.0 |  |
Corporate Eliminations And Other Segment | China and India distribution operations |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales |  | 639.4 |  | 575.6 |  | 533.9
Gross margin |  | $ 58.7 |  | $ 27.3 |  | $ 42.8
[1] | In 2019, we recorded an impairment of goodwill in Phosphates of $588.6 million, which reduced the total asset balance
[2] | The "Corporate, Eliminations and Other" category includes the results of our ancillary distribution operations in India and China. For the years ended December 31, 2020, 2019 and 2018, distribution operations in India and China had revenues of $639.4 million, $575.6 million, and $533.9 million, respectively and gross margins of $58.7 million, $27.3 million, and $42.8 million, respectively.

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