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	Dec. 31, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents, amortized cost	$ 1,369,947	$ 1,735,765
Short-term investments	2,489,798	2,177,231
Long-term investments	461,029	529,974
Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents, amortized cost	1,369,947	1,735,765
Gross Unrealized Gains	3,869	535
Gross Unrealized Losses	(2,772)	(12,107)
Short-term investments	2,489,798	2,177,231
Long-term investments	461,029	529,974
Total, amortized cost	4,319,677	4,454,542
Total, estimated fair value	4,320,774	4,442,970
Fair Value, Recurring | Cash
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents, amortized cost	516,673	321,667
Cash, estimated fair value	516,673	321,667
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	803,274	1,377,540
Amortized cost	2,732,413	3,238,989
Gross Unrealized Gains	2,480	151
Gross Unrealized Losses	(2,073)	(9,431)
Estimated Fair Value	2,732,820	3,229,709
Short-term investments	1,638,537	1,570,591
Long-term investments	291,009	281,578
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	36,558
Amortized cost	1,070,591	893,886
Gross Unrealized Gains	1,389	384
Gross Unrealized Losses	(699)	(2,676)
Estimated Fair Value	1,071,281	891,594
Short-term investments	851,261	606,640
Long-term investments	170,020	248,396
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	698,702	1,377,540
Amortized cost	698,702	1,377,540
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	698,702	1,377,540
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	104,572	0
Amortized cost	2,033,711	1,861,449
Gross Unrealized Gains	2,480	151
Gross Unrealized Losses	(2,073)	(9,431)
Estimated Fair Value	2,034,118	1,852,169
Short-term investments	1,638,537	1,570,591
Long-term investments	291,009	281,578
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	105,993	174,037
Gross Unrealized Gains	97	67
Gross Unrealized Losses	(22)	(132)
Estimated Fair Value	106,068	173,972
Short-term investments	106,068	173,972
Long-term investments	0	0
Fair Value, Recurring | Bank 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
Amortized cost	50,000
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Estimated Fair Value	50,000
Short-term investments	0
Long-term investments	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	19,761
Amortized cost	299,248	238,224
Gross Unrealized Gains	191	63
Gross Unrealized Losses	(8)	(122)
Estimated Fair Value	299,431	238,165
Short-term investments	299,431	218,404
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	16,797
Amortized cost	615,350	438,148
Gross Unrealized Gains	1,101	208
Gross Unrealized Losses	(669)	(2,404)
Estimated Fair Value	615,782	435,952
Short-term investments	445,762	170,759
Long-term investments	$ 170,020	248,396
Fair Value, Recurring | U.S. government agency securities | Level 2:
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents, amortized cost		0
Amortized cost		43,477
Gross Unrealized Gains		46
Gross Unrealized Losses		(18)
Estimated Fair Value		43,505
Short-term investments		43,505
Long-term investments		$ 0