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Fair Value Measurements - Assets and Liabilities Recorded at Fair Value (Parenthetical) (Detail) - USD ($) $ in Millions | Sep. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Other Accrued Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Cash flow swaps designated as hedges | $ 5.1 | $ 7.5
Cash flow swaps not designated as hedges | 0.5 | 0.7
Other Long-Term Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Cash flow swaps designated as hedges | 8.8 | 2.8
Cash flow swaps not designated as hedges | $ 0.6 | $ 0.8

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- Definition Fair value as of the balance sheet date of all interest rate derivative liabilities designated as cash flow hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959 + Details
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