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Financing Arrangements - Mosaic Credit Facility (Details) |  | 12 Months Ended |
--- | --- | --- | ---
Nov. 18, 2016 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 05, 2013 USD ($)
Debt Instrument |  |  |  |  |
Short-term Debt |  | $ 11,500,000 | $ 6,100,000 |  |
Term Loan Facility |  |  |  |  |
Debt Instrument |  |  |  |  |
Long term debt including current maturities | $ 720,000,000 |  |  |  |
Line of Credit | Mosaic Credit Facility |  |  |  |  |
Debt Instrument |  |  |  |  |
Credit facility term | 5 years |  |  |  |
The Mosaic Credit Facility amount of revolving credit loans | $ 2,000,000,000.0 |  |  |  | $ 1,500,000,000.0
Line of credit facility, expiration date |  | Nov. 18, 2021 |  |  |
A failure to pay principal or interest under any one item of other indebtedness in excess of $50 million, or breach or default under such indebtedness that permits the holders thereof to accelerate the maturity thereof, will result in a cross-default in the Mosaic Credit Line |  | $ 50,000,000 |  |  |
A failure to pay principal or interest for multiple items of other indebtedness in excess of $75 million, or breach or default under such indebtedness that permits the holders thereof to accelerate the maturity thereof, will result in a cross-default in the Mosaic Credit Line |  | 75,000,000 |  |  |
Credit facility, Consolidated Capitalization Ratio, minimum | 0.65 |  |  |  |
Credit facility, interest coverage ratio, minimum | 3.0 |  |  |  |
Net available borrowings for revolving loans under the Mosaic Credit Facility |  | $ 1,990,000,000 | $ 1,980,000,000 |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage |  | 0.20% | 0.16% | 0.13% |
Line of Credit Facility, Commitment Fee Amount |  | $ 4,000,000 | $ 3,300,000 | $ 2,000,000 |
Line of Credit | Mosaic Credit Facility | Term Loan Facility |  |  |  |  |
Debt Instrument |  |  |  |  |
The Mosaic Credit Facility amount of revolving credit loans | $ 2,720,000,000.00 |  |  |  |
Letter of Credit |  |  |  |  |
Debt Instrument |  |  |  |  |
Letters of Credit Outstanding, Amount |  | 54,400,000 |  |  |
Letter of Credit | Mosaic Credit Facility |  |  |  |  |
Debt Instrument |  |  |  |  |
Letters of Credit Outstanding, Amount | $ 18,300,000 | 14,300,000 | 15,400,000 |  |
Short-term Debt |  |  |  |  |
Debt Instrument |  |  |  |  |
Short-term Debt |  | $ 11,500,000 | 6,100,000 |  |
Unfavorable Regulatory Action [Member] | 2015 Consent Decrees With EPA [Member] |  |  |  |  |
Debt Instrument |  |  |  |  |
Letters of Credit Outstanding, Amount |  |  | $ 50,000,000 |  |

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- Definition The minimum amount of default, as defined, under a single other form of indebtedness that would trigger the default clause of the line of credit facility. + References No definition available. + Details
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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