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Income Taxes Income Taxes - Operating Loss Carryforwards (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Operating Loss Carryforwards [Line Items] |  |
Net operating loss and capital loss carryforwards | $ 74.6 | $ 71.5
State Operating Loss Carryforwards | 791.1 |
Deferred tax liability, unremitted foreign earnings | 98.5 | 38.5
U.S. Federal |  |
Operating Loss Carryforwards [Line Items] |  |
Foreign tax credit carryforwards | 139.5 |
Non-U.S. Tax Jurisdiction |  |
Operating Loss Carryforwards [Line Items] |  |
Operating Loss Carryforwards | 168.9 |
Operating Loss Carryforwards subject to expiration | 110.0 |
Operating Loss Carryforwards not subject to expiration | 58.9 |
Operating Loss Carryforwards valuation allowance | 88.0 |
Net operating loss and capital loss carryforwards | 168.9 |
Non-U.S. income tax holidays | 31.0 | $ 25.5
State and Local Jurisdiction |  |
Operating Loss Carryforwards [Line Items] |  |
Operating Loss Carryforwards valuation allowance | 779.2 |
Deferred Tax Assets, Tax Credit Carryforwards, Other | 19.7 |
Tax Credit Carryforward, Valuation Allowance | $ 19.7 |

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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 20 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=96869850&loc=d3e28680-109314 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32632-109319 + Details
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