v2.3.0.11
Fair Value Measurements (Details) (USD $)
In Thousands
Jun. 30, 2011
Dec. 31, 2010
Fair Value, Balance Sheet Grouping, Financial Statement Captions    
Cash equivalents $ 1,853,846 $ 787,829
Short-term investments 299,954 374,862
Restricted cash and investments 2,876 2,876
Long-term investments 6,319 6,319
Derivative assets 1,716 10,381
Total assets measured at fair value 2,164,711 1,182,267
Derivative liabilities 19,965 18,690
Total liabilities measured at fair value 19,965 18,690
Level 1
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions    
Cash equivalents 1,853,846 787,829
Short-term investments 299,954 374,862
Restricted cash and investments 2,876 2,876
Long-term investments 0 0
Derivative assets 0 0
Total assets measured at fair value 2,156,676 1,165,567
Derivative liabilities 0 0
Total liabilities measured at fair value 0 0
Level 2
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions    
Cash equivalents 0 0
Short-term investments 0 0
Restricted cash and investments 0 0
Long-term investments 0 0
Derivative assets 1,716 10,381
Total assets measured at fair value 1,716 10,381
Derivative liabilities 19,965 18,690
Total liabilities measured at fair value 19,965 18,690
Level 3
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions    
Cash equivalents 0 0
Short-term investments 0 0
Restricted cash and investments 0 0
Long-term investments 6,319 6,319
Derivative assets 0 0
Total assets measured at fair value 6,319 6,319
Derivative liabilities 0 0
Total liabilities measured at fair value $ 0 $ 0