Quarterly report pursuant to Section 13 or 15(d)

MARKETABLE SECURITIES - Amortized Cost and Fair Value (Details)

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MARKETABLE SECURITIES - Amortized Cost and Fair Value (Details)
Sep. 30, 2020
USD ($)
investment
Jun. 30, 2020
USD ($)
Debt Securities, Available-for-sale [Line Items]
Amortized Cost $ 1,434,736,000 $ 1,390,874,000
Gross Unrealized Gains 3,734,000 4,748,000
Gross Unrealized Losses (96,000) (59,000)
Fair Value 1,438,374,000 1,395,563,000
Add: Time deposits 133,836,000 124,153,000
Marketable securities, Amortized Cost 823,995,000 741,374,000
Marketable securities, Gross Unrealized Gains 3,734,000 4,748,000
Marketable securities, Gross Unrealized Losses (96,000) (59,000)
Marketable securities, Fair value $ 827,633,000 746,063,000
Number of investments in an unrealized loss position | investment 40
Investments in continuous loss position, 12 months or more $ 0
Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Amortized Cost 744,577,000 773,653,000
Gross Unrealized Gains 0 0
Gross Unrealized Losses 0 0
Fair Value 744,577,000 773,653,000
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost 402,338,000 379,334,000
Gross Unrealized Gains 2,046,000 2,673,000
Gross Unrealized Losses (88,000)
Fair Value 404,296,000 381,957,000
Money market funds and other
Debt Securities, Available-for-sale [Line Items]
Amortized Cost 682,785,000 694,950,000
Gross Unrealized Gains 0 0
Gross Unrealized Losses 0 0
Fair Value 682,785,000 694,950,000
Municipal securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost 35,368,000 28,859,000
Gross Unrealized Gains 261,000 251,000
Gross Unrealized Losses 0
Fair Value 35,629,000 29,110,000
Sovereign securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost 2,009,000
Gross Unrealized Gains 8,000
Gross Unrealized Losses 0
Fair Value 2,017,000
U.S. Government agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost 137,169,000 106,091,000
Gross Unrealized Gains 326,000 252,000
Gross Unrealized Losses (8,000)
Fair Value 137,487,000 106336000年
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost 177,076,000 179,631,000
Gross Unrealized Gains 1,101,000 1,564,000
Gross Unrealized Losses 0
Fair Value $ 178,177,000 $ 181,193,000
Corporate and Government securities
Debt Securities, Available-for-sale [Line Items]
Investment portfolio, maximum maturity term 3 years
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