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Income Taxes (Details 4) $ in Millions, $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2021 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2021 CAD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Mar. 31, 2022 USD ($)
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |
Terra amended tax returns |  | $ 0.0 |  | $ (24.0) | $ (10.0) |
Interest income |  |  |  | 26.0 |  |
Income Tax Expense (Benefit) |  | (283.0) |  | (31.0) | (126.0) |
Income Tax Examination, Interest Income, Net of Tax |  |  |  | 23.0 |  |
Reductions related to settlements with tax jurisdictions |  | 59.0 |  | 23.0 |  |
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions |  |  |  | 9.0 |  |
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority, Income Tax Matter | $ 68.0 | 68.0 |  |  |  |
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority, Withholding Tax Matter | 42.0 | 42.0 |  |  |  |
Less: Net earnings attributable to noncontrolling interest |  | 343.0 |  | 115.0 | 153.0 |
Non-deductible goodwill impairment |  | 60.0 |  | 0.0 | 0.0 |
Deferred tax assets, capital loss carryforwards | 90.0 | 90.0 |  |  |  |
Tax credit carryforward decrease during period |  | 27.0 |  |  |  |
Tax credit carryforwards not expected to be realized | 18.0 | 18.0 |  |  |  |
Liability (refund) adjustment from settlement with taxing authority | 110.0 | 110.0 |  |  |  |
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 21.0 | 21.0 |  |  |  |
Additions for tax positions taken during the current year |  | 0.0 |  | 0.0 |  |
Interest expense and penalties |  |  |  |  |  |
Interest expense and penalties related to potential income taxes |  |  |  | (29.0) | $ 4.0 |
Accrued interest expense and penalties |  |  |  |  |  |
Amount recognized in consolidated balance sheets for accrued interest and penalties related to income taxes | 4.0 | 4.0 |  | 4.0 |  |
Terra Amended Tax Returns |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |
Reductions related to settlements with tax jurisdictions |  | 19.0 |  |  |  |
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions | 4.0 |  |  |  |  |
Tax Year 2012 - 2016 |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions |  | 13.0 |  |  |  |
Subsequent Event |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority, Withholding Tax Matter |  |  |  |  |  | $ 20.0
Canada Revenue Agency |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |
Tax assessment amount |  | 138.0 | $ 174 |  |  |
Internal Revenue Service (IRS) |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |
Reductions related to settlements with tax jurisdictions |  |  |  | 12.0 |  |
Liability (refund) adjustment from settlement with taxing authority | (38.0) | (38.0) |  |  |  |
State Tax Authority |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |
Operating loss carryforwards | 37.0 | 37.0 |  |  |  |
Liability (refund) adjustment from settlement with taxing authority | 12.0 | 12.0 |  |  |  |
Additions for tax positions taken during the current year |  | 5.0 |  |  |  |
Foreign Tax Authority |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |
Operating loss carryforwards increase (decrease) valuation allowance | 99.0 | 99.0 |  |  |  |
Non-deductible goodwill impairment |  |  |  | (99.0) |  |
Operating loss carryforwards | $ 118.0 | 118.0 |  |  |  |
Foreign Tax Authority | Canada Revenue Agency |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |
Interest income |  |  |  | 10.0 |  |
Domestic Tax Authority |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |
Interest income |  |  |  | 16.0 |  |
Income Tax Expense (Benefit) |  |  |  | 18.0 |  |
Point Lisas Nitrogen Limited (PLNL) | Foreign Tax Authority |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount |  | $ 12.0 |  | 6.0 |  |
Interest Income | Internal Revenue Service (IRS) |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |
Terra amended tax returns |  |  |  | 5.0 |  |
interest income, net | Internal Revenue Service (IRS) |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |
Terra amended tax returns |  |  |  | 4.0 |  |
income tax benefit | Internal Revenue Service (IRS) |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |
Terra amended tax returns |  |  |  | $ 10.0 |  |

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