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CASH EQUIVALENTS AND MARKETABLE SECURITIES - Schedule of Investments (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | $ 1,639,302 | $ 1,370,384
Gross Unrealized Gains | 437 | 33
Gross Unrealized Losses | (6,813) | (10,553)
Fair Value | 1,632,926 | 1,359,864
Cash Equivalents |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 140,574 | 220,265
Marketable Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 1,492,352 | 1,139,599
Money market funds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 120,657 | 165,407
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Fair Value | 120,657 | 165,407
Money market funds | Cash Equivalents |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 120,657 | 165,407
Money market funds | Marketable Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 0 | 0
Certificates of deposit |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 50,684 | 31,874
Gross Unrealized Gains | 26 | 13
Gross Unrealized Losses | (71) | (130)
Fair Value | 50,639 | 31,757
Certificates of deposit | Cash Equivalents |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 0 | 0
Certificates of deposit | Marketable Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 50,639 | 31,757
Commercial paper |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 127,549 | 148,832
Gross Unrealized Gains | 99 | 10
Gross Unrealized Losses | (179) | (171)
Fair Value | 127,469 | 148,671
Commercial paper | Cash Equivalents |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 1,522 | 50,764
Commercial paper | Marketable Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 125,947 | 97,907
Corporate notes and bonds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 295,271 | 168,887
Gross Unrealized Gains | 16 | 2
Gross Unrealized Losses | (2,893) | (3,313)
Fair Value | 292,394 | 165,576
Corporate notes and bonds | Cash Equivalents |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 2,000 | 0
Corporate notes and bonds | Marketable Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 290,394 | 165,576
U.S. Treasuries |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 348,693 | 301,349
Gross Unrealized Gains | 97 | 8
Gross Unrealized Losses | (133) | (132)
Fair Value | 348,657 | 301,225
U.S. Treasuries | Cash Equivalents |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 16,395 | 4,094
U.S. Treasuries | Marketable Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 332,262 | 297,131
U.S. Government agency securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 696,448 | 554,035
Gross Unrealized Gains | 199 | 0
Gross Unrealized Losses | (3,537) | (6,807)
Fair Value | 693,110 | 547,228
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 | $ 693,110 | $ 547,228

X
- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
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