Annual report pursuant to Section 13 and 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
Dec. 31, 2012
Dec. 31, 2011
Derivative [Line Items]    
Gross Amounts of Recognized Assets $ 1.2 $ 5.2
Gross Amounts Offset in the Balance Sheet, Derivative Assets (1.2) (0.7)
Net Amounts of Assets Presented in the Balance Sheet   4.5
Foreign exchange currency contracts [Member]
   
Derivative [Line Items]    
Gross Amounts of Recognized Assets 1.2 5.2
Gross Amounts Offset in the Balance Sheet, Derivative Assets (1.2) (0.7)
Net Amounts of Assets Presented in the Balance Sheet   $ 4.5