Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Assets or Liabilities Recorded at Fair Value (Parenthetical) (Detail)

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Fair Value Measurements - Assets or Liabilities Recorded at Fair Value (Parenthetical) (Detail) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Cash Flow Swaps Designated as Hedges [Member]
   
Derivatives, Fair Value [Line Items]    
Amount included in other accrued liabilities $ 8.6 $ 10.6
Amount included in other long-term liabilities 2.5 7.4
Cash Flow Swaps Not Designated as Hedges [Member]
   
Derivatives, Fair Value [Line Items]    
Amount included in other accrued liabilities 0.7 1.0
Amount included in other long-term liabilities $ 0.9 $ 1.0