v2.4.0.6
Fair Value Measurements (Narrative) (Details) (USD $)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Available for sale investments, short-term $ 57,000,000 $ 81,000,000  
Available for sale investments, long-term 212,000,000 163,000,000  
Gross unrealized gains 2,000,000 1,000,000  
Gross unrealized losses 1,000,000 1,000,000  
Time deposits, held by company's majority-owned subsidiaries 228,000,000 88,000,000  
Notional amount of foreign currency derivatives 219,000,000    
Net gains (losses) from foreign currency forward contracts (1,000,000) 6,000,000 32,000,000
Foreign Exchange Forward [Member]
     
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Net forward asset 1,043,000    
Net forward liability   $ 1,431,000