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MARKETABLE SECURITIES - Amortized Costs and Fair Value of Marketable Securities (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Jun. 30, 2022
--- | --- | ---
Debt Securities, Available-for-Sale [Line Items] |  |
Money market funds and other | $ 1,257,223 | $ 948,027
Equity securities, amortized cost | 3,211 | 3,211
Equity securities, gross unrealized gains | 14,948 | 7,824
Equity securities, gross unrealized losses | 0 | 0
Equity securities, fair value | 18,159 | 11,035
Subtotal, amortized cost | 2,474,443 | 1,972,277
Subtotal, gross unrealized gains | 15,014 | 7,873
Subtotal, gross unrealized losses | (16,350) | (19,778)
Subtotal, fair value | 2,473,107 | 1,960,372
Add: Time deposits | 471,439 | 274,873
Cash equivalents, amortized cost | 1,629,248 | 1,112,146
Cash equivalents, gross unrealized gains | 4 | 0
Cash equivalents, gross unrealized losses | 0 | (1)
Cash equivalents, fair value | 1,629,252 | 1,112,145
Marketable securities, amortized cost | 1,316,634 | 1,135,004
Marketable securities, gross unrealized gains | 15,010 | 7,873
Marketable securities, gross unrealized losses | (16,350) | (19,777)
Marketable securities, fair value | 1,315,294 | 1,123,100
Corporate debt securities |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Amortized Cost | 508,511 | 481,881
Available-for-sale securities, gross unrealized gains | 52 | 3
Available-for-sale securities, gross unrealized losses | (5,913) | (8,915)
Available-for-sale securities, fair value | 502,650 | 472,969
Municipal securities |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Amortized Cost | 32,525 | 61,973
Available-for-sale securities, gross unrealized gains | 0 | 0
Available-for-sale securities, gross unrealized losses | (737) | (1,249)
Available-for-sale securities, fair value | 31,788 | 60,724
Sovereign securities |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Amortized Cost |  | 6,041
Available-for-sale securities, gross unrealized gains |  | 2
Available-for-sale securities, gross unrealized losses |  | (53)
Available-for-sale securities, fair value |  | 5,990
U.S. Government agency securities |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Amortized Cost | 134,486 | 92,273
Available-for-sale securities, gross unrealized gains | 4 | 26
Available-for-sale securities, gross unrealized losses | (918) | (1,183)
Available-for-sale securities, fair value | 133,572 | 91,116
U.S. Treasury securities |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Amortized Cost | 538,487 | 378,871
Available-for-sale securities, gross unrealized gains | 10 | 18
Available-for-sale securities, gross unrealized losses | (8,782) | (8,378)
Available-for-sale securities, fair value | $ 529,715 | $ 370,511

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