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Disaggregation of Revenue (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Disaggregation of Revenue [Line Items] |  |  |  |
Net Sales | $ 2,044.7 | $ 2,176.9 | $ 3,842.8 | $ 4,076.6
Potash Crop Nutrients | Transferred at Point in Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net Sales | 658.0 | 711.9 | 1,129.0 | 1,284.0
Phosphate Crop Nutrients | Transferred at Point in Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net Sales | 559.6 | 643.3 | 1,106.8 | 1,167.9
Crop Nutrient Blends | Transferred at Point in Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net Sales | 252.0 | 287.4 | 539.3 | 580.8
Specialty Products | Transferred at Point in Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net Sales | 436.2 | 417.4 | 752.1 | 736.9
Phosphate Rock | Transferred at Point in Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net Sales | 7.5 | 12.4 | 14.0 | 19.4
Other Product Types | Transferred at Point in Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net Sales | 131.4 | 104.5 | 301.6 | 287.6
Product |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net Sales | 2,044.7 | 2,176.9 | 3,842.8 | 4,076.6
Brazil | Product | Transferred at Point in Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net Sales | 757.0 | 805.7 | 1,469.7 | 1,483.7
Canpotex [Member] | Product | Transferred at Point in Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net Sales | 215.8 | 281.7 | 362.2 | 539.3
Canada | Product | Transferred at Point in Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net Sales | 137.4 | 142.2 | 254.7 | 278.3
India | Product | Transferred at Point in Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net Sales | 100.8 | 72.3 | 138.0 | 100.1
China | Product | Transferred at Point in Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net Sales | 74.5 | 58.8 | 113.9 | 123.9
Australia | Product | Transferred at Point in Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net Sales | 0.3 | 0.1 | 41.3 | 56.1
Mexico | Product | Transferred at Point in Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net Sales | 22.8 | 35.8 | 47.7 | 80.2
Colombia | Product | Transferred at Point in Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net Sales | 25.8 | 22.1 | 40.0 | 38.6
Paraguay | Product | Transferred at Point in Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net Sales | 26.4 | 26.1 | 42.7 | 47.5
Japan | Product | Transferred at Point in Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net Sales | 32.6 | 8.9 | 44.5 | 9.0
Peru | Product | Transferred at Point in Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net Sales | 0.0 | 26.1 | 6.0 | 46.2
Argentina | Product | Transferred at Point in Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net Sales | 55.1 | 46.6 | 83.1 | 72.4
Honduras | Product | Transferred at Point in Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net Sales | 10.5 | 3.6 | 17.5 | 8.0
Thailand | Product | Transferred at Point in Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net Sales | 4.7 | 8.1 | 9.1 | 13.2
Other Foreign | Product | Transferred at Point in Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net Sales | 19.7 | 23.4 | 49.8 | 54.8
Total Foreign | Product | Transferred at Point in Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net Sales | 1,483.4 | 1,561.5 | 2,720.2 | 2,951.3
United States | Product | Transferred at Point in Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net Sales | $ 561.3 | $ 615.4 | $ 1,122.6 | $ 1,125.3

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