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Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Allowance for Doubtful Accounts |  |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Year | $ 0.8 | $ 1.7 | $ 1.8
Charged to Cost and Expense | 1.1 | (0.8) | 0.3
Accounts Written off / Reductions | (0.1) | (0.1) | (0.4)
Balance at End of Year | 1.8 | 0.8 | 1.7
Deferred Tax Valuation Allowance |  |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Year | 80.7 | 71.5 | 74.1
Additions | 108.1 | 80.7 | 0.0
Accounts Written off / Reductions | 0.0 | (71.5) | (2.6)
Balance at End of Year | $ 188.8 | $ 80.7 | $ 71.5

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- Definition Total of the adjustments in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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