Annual report pursuant to Section 13 and 15(d)

Note 4. Marketable Securities Amortized Costs and Fair Value (Details)

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Note 4. Marketable Securities Amortized Costs and Fair Value (Details) (USD $)
 1 Months Ended 12 Months Ended
Feb. 29, 2008
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2009
Jun. 30, 2008
Marketable Securities [Line Items]          
Amortized Cost   $ 1,801,110,000 $ 1,336,318,000    
Gross Unrealized Gains   6,712,000 7,112,000    
Gross Unrealized Losses   (545,000) (1,388,000)    
Fair Value   1,807,277,000 1,342,042,000    
Add: Time Deposits (1)   65,402,000 [1] 38,407,000 [1]    
Less: Cash Equivalents   545,475,000 376,316,000    
Cash Equivalents Gross Unrealized Gains   0 7,000    
Cash Equivalents Gross Unrealized Losses   (2,000) 0    
Less: Cash Equivalents, Fair Value   545,473,000 376,323,000    
Marketable Securities, Amortized Cost   1,321,037,000 998,409,000    
Marketable Securities, Gross Unrealized Gains   6,712,000 7,105,000    
Marketable Securities, Gross Unrealized Losses   (543,000) (1,388,000)    
Marketable Securities, Fair Value   1,327,206,000 1,004,126,000    
Contractual Maturities of Securities Classified as Available-for-Sale Securites [Abstract]          
Due within One Year, Amortized Cost   338,240,000      
Due after One Year Through Three Years, Amortized Cost   982,797,000      
Due within One Year, Fair Value   339,968,000      
Due after One Year Through Three Years, Fair Value   987,238,000      
Contractual Maturities, Date Range, Low     20 20 20
Contractual Maturities, Date Range, High     30 30 30
Auction Failure 48,200,000        
Auction Rate Securities Par Value     23,900,000    
Auction Rate Securities, Sold at Par     16,800,000    
Debt Instrument, Interest Rate Terms   seven to forty-nine days      
US Treasury Securities [Member]
          
Marketable Securities [Line Items]          
Amortized Cost   58,754,000 42,182,000    
Gross Unrealized Gains   165,000 112,000    
Gross Unrealized Losses   (23,000) (1,000)    
Fair Value   58,896,000 42,293,000    
U.S. Government Agency Securities [Member]
          
Marketable Securities [Line Items]          
Amortized Cost   319,375,000 249,182,000    
Gross Unrealized Gains   931,000 1,108,000    
Gross Unrealized Losses   (123,000) (10,000)    
Fair Value   320,183,000 250,280,000    
Municipal Securities [Member]
          
Marketable Securities [Line Items]          
Amortized Cost   38,688,000 55,171,000    
Gross Unrealized Gains   275,000 368,000    
Gross Unrealized Losses   (6,000) (80,000)    
Fair Value   38,957,000 55,459,000    
Corporate Debt Securities [Member]
          
Marketable Securities [Line Items]          
Amortized Cost   870,591,000 599,118,000    
Gross Unrealized Gains   5,162,000 5,314,000    
Gross Unrealized Losses   (368,000) (1,276,000)    
Fair Value   875,385,000 603,156,000    
Money Market and Other [Member]
          
Marketable Securities [Line Items]          
Amortized Cost   481,770,000 334,674,000    
Gross Unrealized Gains   0 0    
Gross Unrealized Losses   0 0    
Fair Value   481,770,000 334,674,000    
Sovereign Securities [Member]
          
Marketable Securities [Line Items]          
Amortized Cost   31,932,000 39,166,000    
Gross Unrealized Gains   179,000 210,000    
Gross Unrealized Losses   (25,000) (21,000)    
Fair Value   32,086,000 39,355,000    
Auction Rate Securities [Member]
          
Marketable Securities [Line Items]          
Amortized Cost     16,825,000    
Gross Unrealized Gains     0    
Gross Unrealized Losses     0    
Fair Value     $ 16,825,000    
[1] Time deposits excluded from fair value measurements.