FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Schedule of Financial Assets Subject to Fair Value Measurements on a Recurring Basis by Level Within the Fair Value Hierarchy (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents, amortized cost	$ 1,353,581	$ 1,369,947
Short-term investments	1,862,848	2,489,798
Long-term investments	687,641	461,029
Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents, amortized cost	1,353,581	1,369,947
Gross Unrealized Gains	431	3,869
Gross Unrealized Losses	(3,553)	(2,772)
Short-term investments	1,862,848	2,489,798
Long-term investments	687,641	461,029
Total, amortized cost	3,907,192	4,319,677
Total, estimated fair value	3,904,070	4,320,774
Fair Value, Recurring | Cash
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents, amortized cost	495,575	516,673
Cash, estimated fair value	495,575	516,673
Short-term investments	0	0
Long-term investments	0	0
Fair Value, Recurring | Level 1:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents, amortized cost	824,764	803,274
Amortized cost	2,771,941	2,732,413
Gross Unrealized Gains	214	2,480
Gross Unrealized Losses	(3,054)	(2,073)
Estimated Fair Value	2,769,101	2,732,820
Short-term investments	1,411,255	1,638,537
Long-term investments	533,082	291,009
Fair Value, Recurring | Level 2:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents, amortized cost	33,242	50,000
Amortized cost	639,676	1,070,591
Gross Unrealized Gains	217	1,389
Gross Unrealized Losses	(499)	(699)
Estimated Fair Value	639,394	1,071,281
Short-term investments	451,593	851,261
Long-term investments	154,559	170,020
Fair Value, Recurring | Money market funds | Level 1:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents, amortized cost	661,932	698,702
Amortized cost	661,932	698,702
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	661,932	698,702
Short-term investments	0	0
Long-term investments	0	0
Fair Value, Recurring | U.S. Treasury securities | Level 1:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents, amortized cost	162,832	104,572
Amortized cost	2,110,009	2,033,711
Gross Unrealized Gains	214	2,480
Gross Unrealized Losses	(3,054)	(2,073)
Estimated Fair Value	2,107,169	2,034,118
Short-term investments	1,411,255	1,638,537
Long-term investments	533,082	291,009
Fair Value, Recurring | Certificates of deposit | Level 2:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents, amortized cost	0	0
Amortized cost	23,313	105,993
Gross Unrealized Gains	6	97
Gross Unrealized Losses	0	(22)
Estimated Fair Value	23,319	106,068
Short-term investments	23,319	106,068
Long-term investments	0	0
Fair Value, Recurring | Time deposits | Level 2:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents, amortized cost	0	50,000
Amortized cost	100,000	50,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	100,000	50,000
Short-term investments	100,000	0
Long-term investments	0	0
Fair Value, Recurring | Commercial paper | Level 2:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents, amortized cost	18,803	0
Amortized cost	112,951	299,248
Gross Unrealized Gains	0	191
Gross Unrealized Losses	(41)	(8)
Estimated Fair Value	112,910	299,431
Short-term investments	94,107	299,431
Long-term investments	0	0
Fair Value, Recurring | Corporate debt securities | Level 2:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents, amortized cost	14,439	0
Amortized cost	403,412	615,350
Gross Unrealized Gains	211	1,101
Gross Unrealized Losses	(458)	(669)
Estimated Fair Value	403,165	615,782
Short-term investments	234,167	445,762
Long-term investments	$ 154,559	$ 170,020