Quarterly report pursuant to Section 13 or 15(d)

Marketable Securities (Contractual Maturities) (Details)

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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 1200000美元us-gaap_AvailableForSaleSecuritiesGrossRealizedGains $ 2,100,000us-gaap_AvailableForSaleSecuritiesGrossRealizedGains $ 1,500,000us-gaap_AvailableForSaleSecuritiesGrossRealizedGains
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