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Business And Significant Accounting Policies (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2011
SG&A [Member]
Dec. 31, 2010
SG&A [Member]
Dec. 31, 2009
SG&A [Member]
Dec. 31, 2011
Venezuela Operations [Member]
Dec. 31, 2010
Venezuela Operations [Member]
Jan. 31, 2010
Venezuela Operations [Member]
Dec. 31, 2010
Venezuela Operations [Member]
SG&A [Member]
Jan. 31, 2010
Before Currency Devaluation [Member]
Venezuela Operations [Member]
Jan. 31, 2010
After Currency Devaluation [Member]
Venezuela Operations [Member]
Basis Of Presentation And Significant Accounting Policies [Line Items]                        
Stock-based compensation $ 23.8 $ 24.3 $ 41.3 $ 23.8 $ 24.3 $ 41.3            
Interest income 7.2 4.9 7.8                  
Foreign currency transaction gains/(losses)       (11.1) 8.7 18.9            
Cumulative three year inflation rate percentage             100.00%          
Bolivar exchange rate for imported essential goods (per U.S dollar)                     2.15 2.60
Bolivar exchange rate for imported non-essential goods (per U.S. dollar)                 4.30      
Official exchange rate of foreign currency remeasured (per U.S. dollar)                 4.30      
Venezuela devaluation charges               14.0        
Venezuela hyperinflationary charges                   56.6    
Concentrations of credit risk, percentage of sales to single customer 20.00% 21.00% 23.00%                  
Advertising cost       $ 143 $ 129 $ 108