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Income Taxes (Tax Examinations) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Mar. 31, 2014 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Income Tax Examination [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Income Tax Expense (Benefit) | $ (23.0) | $ (6.7) | $ (6.0) | $ (9.7) | $ (1.0) | $ (1.6) | $ (2.2) | $ 4.6 |  | $ (45.4) | $ (0.2) | $ (14.8)
Unrecognized tax benefit recognition including interest and penalties, if recognized, would effect income tax expense | $ 5.2 |  |  |  |  |  |  |  |  | $ 5.2 |  |
Tax Assessment Year 2010 to 2012 [Member] |  |  |  |  |  |  |  |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Income Tax Expense (Benefit) |  |  | (3.5) |  |  |  |  |  |  |  |  |
Tax Assessment Year 2005 to 2006 [Member] |  |  |  |  |  |  |  |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Income Tax Expense (Benefit) |  |  |  |  |  |  |  |  | $ (5.0) |  |  |
Tax Assessment Year 2007 to 2009 [Member] |  |  |  |  |  |  |  |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Income Tax Expense (Benefit) |  |  |  | $ (12.8) |  |  |  |  |  |  |  |
Tax Year 2012 [Member] |  |  |  |  |  |  |  |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Operating Loss Carryforwards |  |  | $ 0.6 |  |  |  |  |  |  |  |  |

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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 + Details
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