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Derivative Instruments And Hedging Activities (Statements Of Financial Performance Location Table) (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Derivative [Line Items]        
Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion) $ 12.7 $ (15.2) $ 13.7 $ (10.3)
Amount of Gain Reclassified from Accumulated OCI into Income (Effective Portion) 6.4 1.5 9.4 3.2
Australian Dollar Foreign Exchange Contract Hedge Designation [Member] | Other Comprehensive Income (Loss) [Member]
       
Derivative [Line Items]        
Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion) 1.4 (15.2) 7.5 (10.3)
Australian Dollar Foreign Exchange Contract Hedge Designation [Member] | Product Revenue [Member]
       
Derivative [Line Items]        
Amount of Gain Reclassified from Accumulated OCI into Income (Effective Portion) 5.1 1.5 7.8 2.5
Canadian Dollar Foreign Exchange Contracts Hedge Designation [Member] | Other Comprehensive Income (Loss) [Member]
       
Derivative [Line Items]        
Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion) 11.3    6.2   
Canadian Dollar Foreign Exchange Contracts Hedge Designation [Member] | Cost Of Goods Sold And Operating Expenses [Member]
       
Derivative [Line Items]        
Amount of Gain Reclassified from Accumulated OCI into Income (Effective Portion) 1.3    1.6   
Australian Dollar Foreign Exchange Contract Prior To De Designation [Member] | Other Comprehensive Income (Loss) [Member]
       
Derivative [Line Items]        
Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)          
Australian Dollar Foreign Exchange Contract Prior To De Designation [Member] | Product Revenue [Member]
       
Derivative [Line Items]        
Amount of Gain Reclassified from Accumulated OCI into Income (Effective Portion)        $ 0.7