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	Mar. 31, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents, amortized cost	$ 2,169,489	$ 1,369,947
Short-term investments	1,824,900	2,489,798
Long-term investments	627,591	461,029
Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents, amortized cost	2,169,489	1,369,947
Gross Unrealized Gains	933	3,869
Gross Unrealized Losses	(3,098)	(2,772)
Short-term investments	1,824,900	2,489,798
Long-term investments	627,591	461,029
Total, amortized cost	4,624,145	4,319,677
Total, estimated fair value	4,621,980	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	1,388,590	516,673
Cash, estimated fair value	1,388,590	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	730,899	803,274
Amortized cost	2,436,279	2,732,413
Gross Unrealized Gains	408	2,480
Gross Unrealized Losses	(2,627)	(2,073)
Estimated Fair Value	2,434,060	2,732,820
Short-term investments	1,219,989	1,638,537
Long-term investments	483,172	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	50,000	50,000
Amortized cost	799,276	1,070,591
Gross Unrealized Gains	525	1,389
Gross Unrealized Losses	(471)	(699)
Estimated Fair Value	799,330	1,071,281
Short-term investments	604,911	851,261
Long-term investments	144,419	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	638,232	698,702
Amortized cost	638,232	698,702
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	638,232	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	92,667	104,572
Amortized cost	1,798,047	2,033,711
Gross Unrealized Gains	408	2,480
Gross Unrealized Losses	(2,627)	(2,073)
Estimated Fair Value	1,795,828	2,034,118
Short-term investments	1,219,989	1,638,537
Long-term investments	483,172	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	67,899	105,993
Gross Unrealized Gains	50	97
Gross Unrealized Losses	(13)	(22)
Estimated Fair Value	67,936	106,068
Short-term investments	67,936	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	50,000	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	50,000	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	0	0
Amortized cost	171,352	299,248
Gross Unrealized Gains	24	191
Gross Unrealized Losses	(17)	(8)
Estimated Fair Value	171,359	299,431
Short-term investments	171,359	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	0	0
Amortized cost	460,025	615,350
Gross Unrealized Gains	451	1,101
Gross Unrealized Losses	(441)	(669)
Estimated Fair Value	460,035	615,782
Short-term investments	315,616	445,762
Long-term investments	$ 144,419	$ 170,020