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MARKETABLE SECURITIES - Amortized Costs and Fair Value of Marketable Securities (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Jun. 30, 2021
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Marketable Securities |  |
Available-for-sale securities, amortized cost | $ 1,135,004 |
Available-for-sale securities, gross unrealized losses | (1,183) | $ (49)
Available-for-sale securities, fair value | 1,123,100 |
Money market funds and other | 948,027 | 691,375
Equity securities, amortized cost | 3,211 | 3,211
Equity securities, gross unrealized gains | 7,824 | 26,719
Equity securities, gross unrealized losses | 0 | 0
Equity securities, fair value | 11,035 | 29,930
Subtotal, amortized cost | 1,972,277 | 1,614,840
Subtotal, gross unrealized gains | 7,873 | 27,810
Subtotal, gross unrealized losses | (19,778) | (334)
Subtotal, fair value | 1,960,372 | 1,642,316
Add: Time deposits | 274,873 | 210,636
Cash equivalents, amortized cost | 1,112,146 | 793,040
Cash equivalents, gross unrealized gains | 0 | 0
Cash equivalents, gross unrealized losses | (1) | 0
Cash equivalents, fair value | 1,112,145 | 793,040
Marketable securities, amortized cost | 1,135,004 | 1,032,436
Marketable securities, gross unrealized gains | 7,873 | 27,810
Marketable securities, gross unrealized losses | (19,777) | (334)
Marketable securities, fair value | 1,123,100 | 1,059,912
Corporate debt securities |  |
Marketable Securities |  |
Available-for-sale securities, amortized cost | 481,881 | 468,192
Available-for-sale securities, gross unrealized gains | 3 | 689
Available-for-sale securities, gross unrealized losses | (8,915) | (135)
Available-for-sale securities, fair value | 472,969 | 468,746
Municipal securities |  |
Marketable Securities |  |
Available-for-sale securities, amortized cost | 61,973 | 70,155
Available-for-sale securities, gross unrealized gains | 0 | 106
Available-for-sale securities, gross unrealized losses | (1,249) | (33)
Available-for-sale securities, fair value | 60,724 | 70,228
Sovereign securities |  |
Marketable Securities |  |
Available-for-sale securities, amortized cost | 6,041 | 3,045
Available-for-sale securities, gross unrealized gains | 2 | 7
Available-for-sale securities, gross unrealized losses | (53) | 0
Available-for-sale securities, fair value | 5,990 | 3,052
U.S. Government agency securities |  |
Marketable Securities |  |
Available-for-sale securities, amortized cost | 92,273 | 145,810
Available-for-sale securities, gross unrealized gains | 26 | 160
Available-for-sale securities, fair value | 91,116 | 145,921
U.S. Treasury securities |  |
Marketable Securities |  |
Available-for-sale securities, amortized cost | 378,871 | 233,052
Available-for-sale securities, gross unrealized gains | 18 | 129
Available-for-sale securities, gross unrealized losses | (8,378) | (117)
Available-for-sale securities, fair value | $ 370,511 | $ 233,064

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