Quarterly report pursuant to Section 13 or 15(d)

Marketable Securities - Amortized Cost and Fair Value (Details)

v3.20.1
Marketable Securities - Amortized Cost and Fair Value (Details)
Mar. 31, 2020
USD ($)
investment
Jun. 30, 2019
USD ($)
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost $ 1,104,497,000 $ 1,161,649,000
Gross Unrealized Gains 3,036,000 189,000
Gross Unrealized Losses (3,320,000) (1,232,000)
Fair Value 1,104,213,000 1,160,606,000
Add: Time deposits [1] 85,834,000 99,006,000
Marketable securities, Amortized Cost 688,639,000 724,449,000
Marketable securities, Gross Unrealized Gains 3,036,000 172,000
Marketable securities, Gross Unrealized Losses (3,319,000) (1,230,000)
Marketable securities, Fair value $ 688,356,000 723,391,000
Number of investments in an unrealized loss position | investment 182  
Investments in continuous loss position, 12 more or more $ 0  
Cash and Cash Equivalents    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 501,692,000 536,206,000
Gross Unrealized Gains 0 17,000
Gross Unrealized Losses (1,000) (2,000)
Fair Value 501,691,000 536,221,000
Corporate debt securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 389,870,000 433,518,000
Gross Unrealized Gains 307,000 141,000
Gross Unrealized Losses (3,302,000) (582,000)
Fair Value 386,875,000 433,077,000
Money market funds and other    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 415,952,000 352,708,000
Gross Unrealized Gains 0 0
Gross Unrealized Losses 0 0
Fair Value 415,952,000 352,708,000
Municipal securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 19,531,000 1,910,000
Gross Unrealized Gains 161,000 3,000
Gross Unrealized Losses (9,000) 0
Fair Value 19,683,000 1,913,000
Sovereign securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 6,018,000 6,001,000
Gross Unrealized Gains 30,000 1,000
Gross Unrealized Losses 0 (8,000)
Fair Value 6,048,000 5,994,000
U.S. Government agency securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 78,416,000 159,454,000
Gross Unrealized Gains 272,000 5,000
Gross Unrealized Losses (8,000) (241,000)
Fair Value 78,680,000 159,218,000
U.S. Treasury securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 194,710,000 208,058,000
Gross Unrealized Gains 2,266,000 39,000
Gross Unrealized Losses (1,000) (401,000)
Fair Value $ 196,975,000 $ 207,696,000
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.