Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Offsetting of Derivative Assets (Detail)

v2.4.0.8
Fair Value Measurements - Offsetting of Derivative Assets (Detail) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Derivative [Line Items]    
Gross Amounts of Recognized Assets $ 10.5 $ 1.2
Gross Amounts Offset in the Balance Sheet, Derivative Assets (4.2) (1.2)
Net Amounts of Assets Presented in the Balance Sheet 6.3  
Foreign exchange currency contracts [Member]
   
Derivative [Line Items]    
Gross Amounts of Recognized Assets 10.5 1.2
Gross Amounts Offset in the Balance Sheet, Derivative Assets (4.2) (1.2)
Net Amounts of Assets Presented in the Balance Sheet $ 6.3