v3.3.1.900

Summary of Significant Accounting Policies and Nature of Business - Schedule of Activity in Allowance for Doubtful Accounts During the Years (Detail) - Allowance for Doubtful Accounts [Member] - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |
Balance at beginning of period | $ 5.6 | $ 5.5 | $ 4.5
Charged to costs and expenses, net of recoveries | 2.3 | 0.9 | 3.4
Charged to other accounts | (0.3) | (0.1) | (0.1)
Deductions | (0.7) | (0.7) | (2.3)
Balance at end of period | $ 6.9 | $ 5.6 | $ 5.5

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- Definition Total of 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 established to represent expected future costs. + 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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