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CASH EQUIVALENTS, RESTRICTED CASH AND MARKETABLE SECURITIES - Schedule of Investments (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | $ 1,539,785 | $ 1,541,584
Gross Unrealized Gains | 2,451 | 1,863
Gross Unrealized Losses | (2,346) | (2,218)
Fair Value | 1,539,890 | 1,541,229
Cash Equivalents |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 191,410 | 134,943
Marketable Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 1,253,480 | 1,406,286
Restricted Cash |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 95,000 |
Money market funds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 191,410 | 132,037
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Fair Value | 191,410 | 132,037
Money market funds | Cash Equivalents |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 191,410 | 132,037
Money market funds | Marketable Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 0 | 0
Money market funds | Restricted Cash |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 0 |
Certificates of deposit |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 125,087 | 55,863
Gross Unrealized Gains | 13 | 58
Gross Unrealized Losses | (8) | (9)
Fair Value | 125,092 | 55,912
Certificates of deposit | Cash Equivalents |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 0 | 750
Certificates of deposit | Marketable Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 30,092 | 55,162
Certificates of deposit | Restricted Cash |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 95,000 |
Commercial paper |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 30,681 | 71,427
Gross Unrealized Gains | 40 | 29
Gross Unrealized Losses | (8) | (19)
Fair Value | 30,713 | 71,437
Commercial paper | Cash Equivalents |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 0 | 1,694
Commercial paper | Marketable Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 30,713 | 69,743
Commercial paper | Restricted Cash |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 0 |
Corporate notes and bonds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 449,612 | 406,093
Gross Unrealized Gains | 1,115 | 934
Gross Unrealized Losses | (1,157) | (931)
Fair Value | 449,570 | 406,096
Corporate notes and bonds | Cash Equivalents |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 0 | 462
Corporate notes and bonds | Marketable Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 449,570 | 405,634
Corporate notes and bonds | Restricted Cash |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 0 |
U.S. Treasuries |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 111,606 | 327,773
Gross Unrealized Gains | 42 | 152
Gross Unrealized Losses | (36) | (34)
Fair Value | 111,612 | 327,891
U.S. Treasuries | Cash Equivalents |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 0 | 0
U.S. Treasuries | Marketable Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 111,612 | 327,891
U.S. Treasuries | Restricted Cash |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 0 |
U.S. Government agency securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 631,389 | 548,391
Gross Unrealized Gains | 1,241 | 690
Gross Unrealized Losses | (1,137) | (1,225)
Fair Value | 631,493 | 547,856
U.S. Government agency securities | Cash Equivalents |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 0 | 0
U.S. Government agency securities | Marketable Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 631,493 | $ 547,856
U.S. Government agency securities | Restricted Cash |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | $ 0 |

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