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Narrative (Details) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Sep. 30, 2016 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) year | Dec. 31, 2014 USD ($)
NOL and Tax Credit Carryforwards [Line Items] |  |  |  |  |  |  |
Amount | $ 274.0 | $ 291.4 |  | $ 274.0 | $ 291.4 |  |
Number of Years in Cumulative Loss Profit Position | year |  |  |  |  |  | 3 |
Valuation allowance |  |  |  | (14.5) | 171.5 | $ 74.5 |
Deferred tax asset valuation allowance charge |  | 22.5 | $ (173.1) |  |  |  |
Valuation allowance applicable to other comprehensive income |  |  |  | (10.1) | 130.4 | 121.7 |
Benefit from re-measurement of indefinite lived deferred tax liabilities |  |  |  | 2.6 |  |  |
Benefit from decrease in deferred tax asset valuation allowance |  |  |  | 1.5 |  |  |
Change in federal tax rate and law change | (4.1) |  |  | (4.1) | 0.0 | 0.0 |
Foreign income taxable due to legislative changes |  |  |  | 100.0 |  |  |
Goodwill impairment |  |  |  | 36.6 | 0.0 | 0.0 |
Increase in deferred tax assets | 468.9 | 730.6 |  | 468.9 | 730.6 |  |
Increase in deferred tax liabilities | 471.0 | 734.2 |  | 471.0 | 734.2 |  |
Accumulated other comprehensive loss, net of tax | 1,027.8 | 1,093.7 |  | 1,027.8 | 1,093.7 | 1,014.5 | $ 931.4
Income tax refunds received |  |  |  | 7.1 | 10.5 | 63.3 |
Deferred taxes for foreign withholding taxes | 2.2 |  |  | 2.2 |  |  |
Federal and State Deferred Tax Assets [Member] |  |  |  |  |  |  |
NOL and Tax Credit Carryforwards [Line Items] |  |  |  |  |  |  |
Deferred tax asset valuation allowance charge |  |  |  |  | 165.8 | 68.4 |
Accumulated Deferred Tax Asset Valuation Allowance [Member] |  |  |  |  |  |  |
NOL and Tax Credit Carryforwards [Line Items] |  |  |  |  |  |  |
Valuation allowance applicable to other comprehensive income |  |  |  | 0.0 | 45.6 | 0.0 |
Accumulated other comprehensive loss, net of tax | $ 28.8 | 45.6 |  | 28.8 | 45.6 | $ 0.0 | $ 0.0
Federal [Member] |  |  |  |  |  |  |
NOL and Tax Credit Carryforwards [Line Items] |  |  |  |  |  |  |
Income tax refunds received |  |  |  | $ 3.2 | 7.3 |  |
Restatement Adjustment [Member] |  |  |  |  |  |  |
NOL and Tax Credit Carryforwards [Line Items] |  |  |  |  |  |  |
Increase in deferred tax assets |  | 48.9 |  |  | 48.9 |  |
Increase in deferred tax liabilities |  | $ 48.9 |  |  | $ 48.9 |  |

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- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e681-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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