Quarterly report pursuant to Section 13 or 15(d)

Marketable Securities (Details)

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Marketable Securities (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2011
Jun. 30, 2011
Marketable Securities    
Amortized Cost $ 1,907,988 $ 1,801,110
Gross Unrealized Gains 4,624 6,712
Gross Unrealized Losses (1,561) (545)
Fair Value 1,911,051 1,807,277
Add: Time deposits 73,193 [1] 65,402 [1]
Less: Cash Equivalents, Amortized Cost 632,585 545,475
Cash Equivalents, Gross Unrealized Gains 0 0
Cash Equivalents, Gross Unrealized Losses 0 (2)
Cash Equivalents, Net of Unrealized Gains and Losses 632,585 545,473
Marketable Securities, Gross Unrealized Gains 4,624 6,712
Marketable Securities, Gross Unrealized Losses (1,561) (543)
Contractual Maturities of Securities [Abstract]    
Due within one year, Amortized Cost 327,355  
Due after one year through three years, Amortized Cost 1,021,241  
Marketable Securities, Amortized Cost 1,348,596 1,321,037
Due within one year, Fair Value 328,390  
Due after one year through three years, Fair Value 1,023,269  
Marketable Securities, Fair Value 1,351,659 1,327,206
U.S. Treasury securities
   
Marketable Securities    
Amortized Cost 71,098 58,754
Gross Unrealized Gains 207 165
Gross Unrealized Losses (3) (23)
Fair Value 71,302 58,896
U.S. Government agency securities
   
Marketable Securities    
Amortized Cost 448,963 319,375
Gross Unrealized Gains 692 931
Gross Unrealized Losses (299) (123)
Fair Value 449,356 320,183
Municipal securities
   
Marketable Securities    
Amortized Cost 41,286 38,688
Gross Unrealized Gains 188 275
Gross Unrealized Losses (1) (6)
Fair Value 41,473 38,957
Corporate debt securities
   
Marketable Securities    
Amortized Cost 719,442 870,591
Gross Unrealized Gains 3,464 5,162
Gross Unrealized Losses (1,199) (368)
Fair Value 721,707 875,385
Money market and other
   
Marketable Securities    
Amortized Cost 591,032 481,770
Gross Unrealized Gains 0 0
Gross Unrealized Losses 0 0
Fair Value 591,032 481,770
Sovereign securities
   
Marketable Securities    
Amortized Cost 36,167 31,932
Gross Unrealized Gains 73 179
Gross Unrealized Losses (59) (25)
Fair Value $ 36,181 $ 32,086
[1] Time deposits excluded from fair value measurements.