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)
$ in Thousands
Dec. 31, 2019
USD ($)
investment
Jun. 30, 2019
USD ($)
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost $ 1,178,515 $ 1,161,649
Gross Unrealized Gains 929 189
Gross Unrealized Losses (85) (1,232)
Fair Value 1,179,359 1,160,606
Add: Time deposits [1] 85,667 99,006
Marketable securities, Amortized Cost 736,814 724,449
Marketable securities, Gross Unrealized Gains 929 172
Marketable securities, Gross Unrealized Losses (85) (1,230)
Marketable securities, Fair value $ 737,658 723,391
Number of investments in an unrealized loss position | investment 81  
Investments in continuous loss position, 12 more or more $ 68,300  
Cash and Cash Equivalents    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 527,368 536,206
Gross Unrealized Gains 0 17
Gross Unrealized Losses 0 (2)
Fair Value 527,368 536,221
Corporate debt securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 385,444 433,518
Gross Unrealized Gains 623 141
Gross Unrealized Losses (32) (582)
Fair Value 386,035 433,077
Money market funds and other    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 435,933 352,708
Gross Unrealized Gains 0 0
Gross Unrealized Losses 0 0
Fair Value 435,933 352,708
Municipal securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 9,212 1,910
Gross Unrealized Gains 9 3
Gross Unrealized Losses (3) 0
Fair Value 9,218 1,913
Sovereign securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 6,005 6,001
Gross Unrealized Gains 8 1
Gross Unrealized Losses 0 (8)
Fair Value 6,013 5,994
U.S. Government agency securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 94,739 159,454
Gross Unrealized Gains 50 5
Gross Unrealized Losses (13) (241)
Fair Value 94,776 159,218
U.S. Treasury securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 247,182 208,058
Gross Unrealized Gains 239 39
Gross Unrealized Losses (37) (401)
Fair Value $ 247,384 $ 207,696
Corporate and Government securities    
Debt Securities, Available-for-sale [Line Items]    
Investment portfolio, maximum maturity term 3 years  
[1] Time deposits excluded from fair value measurements.