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
6 Months Ended 12 Months Ended
Dec. 31, 2012
Jun. 30, 2012
Marketable Securities    
Amortized Cost $ 2,387,156 $ 2,341,750
Gross Unrealized Gains 6,338 5,070
Gross Unrealized Losses (436) (762)
Fair Value 2,393,058 2,346,058
Add: Time deposits 59,467 [1] 62,431 [1]
Less: Cash Equivalents, Amortized Cost 641,585 625,339
Cash Equivalents, Gross Unrealized Gains 0 0
Cash Equivalents, Gross Unrealized Losses 0 0
Cash Equivalents, Net of Unrealized Gains and Losses 641,585 625,339
Marketable Securities, Gross Unrealized Gains 6,338 5,070
Marketable Securities, Gross Unrealized Losses (436) (762)
Contractual Maturities of Securities [Abstract]    
Due within one year, Amortized Cost 355,965  
Due after one year through three years, Amortized Cost 1,449,073  
Marketable Securities, Amortized Cost 1,805,038 1,778,842
Due within one year, Fair Value 356,693  
Due after one year through three years, Fair Value 1,454,247  
Marketable Securities, Fair Value 1,810,940 1,783,150
U.S. Treasury securities
   
Marketable Securities    
Amortized Cost 91,927 91,387
Gross Unrealized Gains 151 67
Gross Unrealized Losses (3) (16)
Fair Value 92,075 91,438
U.S. Government agency securities
   
Marketable Securities    
Amortized Cost 579,062 633,587
Gross Unrealized Gains 1,240 981
Gross Unrealized Losses (6) (76)
Fair Value 580,296 634,492
Municipal securities
   
Marketable Securities    
Amortized Cost 77,595 66,538
Gross Unrealized Gains 87 107
Gross Unrealized Losses (88) (102)
Fair Value 77,594 66,543
Corporate debt securities
   
Marketable Securities    
Amortized Cost 1,003,918 914,134
Gross Unrealized Gains 4,796 3,826
Gross Unrealized Losses (336) (568)
Fair Value 1,008,378 917,392
Money market and other
   
Marketable Securities    
Amortized Cost 617,113 607,038
Gross Unrealized Gains 0 0
Gross Unrealized Losses 0 0
Fair Value 617,113 607,038
Sovereign securities
   
Marketable Securities    
Amortized Cost 17,191 29,056
Gross Unrealized Gains 57 89
Gross Unrealized Losses (3) 0
Fair Value 17,245 29,145
Equity securities
   
Marketable Securities    
Amortized Cost 350 10
Gross Unrealized Gains 7 0
Gross Unrealized Losses 0 0
Fair Value $ 357 $ 10
[1] Time deposits excluded from fair value measurements.