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Income Taxes, Valuation Allowances and NOL Carryforwards (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Operating Loss Carryforwards [Line Items] |  |
Operating Loss Carryforwards | $ 71.2 |
Tax Benefit of Loss Carryovers | 71.2 | $ 81.9
NOL Carryforwards which Expire | 57.0 |
NOL Carryforwards which have an Unlimited Life | 14.2 |
Valuation Allowance [Abstract] |  |
Deferred Tax Assets, Valuation Allowance | (93.4) | $ (93.3)
Foreign Jurisdictions [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
Tax Benefit of Loss Carryovers | 33.2 |
Federal Jurisdiction [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
Tax Benefit of Loss Carryovers | 1.7 |
State and Local Jurisdiction [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
Tax Benefit of Loss Carryovers | 36.3 |
United States [Member] |  |
Valuation Allowance [Abstract] |  |
Deferred Tax Assets, Valuation Allowance | (59.1) |
Foreign Jurisdictions [Member] |  |
Valuation Allowance [Abstract] |  |
Deferred Tax Assets, Valuation Allowance | $ (34.3) |

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