Quarterly report pursuant to Section 13 or 15(d)

Marketable Securities (Contractual Maturities) (Details)

v2.4.1.9
Marketable Securities (Contractual Maturities) (Details) (USD $)
 3 Months Ended 6 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Jun. 30, 2014
Amortized Cost          
Due within one year $ 666,565,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost   $ 666,565,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost    
Due after one year through three years 1,116,240,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost   1,116,240,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost    
Marketable Securities, Amortized Cost 1,782,805,000us-gaap_AvailableForSaleSecuritiesAmortizedCost   1,782,805,000us-gaap_AvailableForSaleSecuritiesAmortizedCost   2,517,570,000us-gaap_AvailableForSaleSecuritiesAmortizedCost
Fair Value          
Due within one year 666,694,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue   666,694,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue    
Due after one year through three years 1,115,274,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue   1,115,274,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue    
Marketable Securities, Fair Value 1,781,968,000us-gaap_AvailableForSaleSecurities   1,781,968,000us-gaap_AvailableForSaleSecurities   2,521,776,000us-gaap_AvailableForSaleSecurities
Available-for-sale Securities, Gross Realized Gains $ 400,000us-gaap_AvailableForSaleSecuritiesGrossRealizedGains $ 1,200,000us-gaap_AvailableForSaleSecuritiesGrossRealizedGains $ 2,100,000us-gaap_AvailableForSaleSecuritiesGrossRealizedGains $ 1,500,000us-gaap_AvailableForSaleSecuritiesGrossRealizedGains