FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Assets and Liabilities at Fair Value, Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents, amortized cost	$ 2,775,339	$ 1,735,765
Short-term investments	2,473,955	2,177,231
Long-term investments	288,081	529,974
Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents, amortized cost	2,775,339	1,735,765
Gross Unrealized Gains	692	535
Gross Unrealized Losses	(11,228)	(12,107)
Short-term investments	2,473,955	2,177,231
Long-term investments	288,081	529,974
Total, amortized cost	5,547,911	4,454,542
Total, estimated fair value	5,537,375	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	436,273	321,667
Cash, estimated fair value	436,273	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	2,131,246	1,377,540
Amortized cost	4,169,485	3,238,989
Gross Unrealized Gains	246	151
Gross Unrealized Losses	(8,149)	(9,431)
Estimated Fair Value	4,161,582	3,229,709
Short-term investments	1,894,287	1,570,591
Long-term investments	136,049	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	207,820	36,558
Amortized cost	942,153	893,886
Gross Unrealized Gains	446	384
Gross Unrealized Losses	(3,079)	(2,676)
Estimated Fair Value	939,520	891,594
Short-term investments	579,668	606,640
Long-term investments	152,032	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	1,871,962	1,377,540
Amortized cost	1,871,962	1,377,540
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	1,871,962	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	259,284	0
Amortized cost	2,297,523	1,861,449
Gross Unrealized Gains	246	151
Gross Unrealized Losses	(8,149)	(9,431)
Estimated Fair Value	2,289,620	1,852,169
Short-term investments	1,894,287	1,570,591
Long-term investments	136,049	281,578
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	0
Amortized cost	54,481	43,477
Gross Unrealized Gains	3	46
Gross Unrealized Losses	(95)	(18)
Estimated Fair Value	54,389	43,505
Short-term investments	54,389	43,505
Long-term investments	0	0
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	79,747	174,037
Gross Unrealized Gains	21	67
Gross Unrealized Losses	(88)	(132)
Estimated Fair Value	79,680	173,972
Short-term investments	79,680	173,972
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	163,433	19,761
Amortized cost	358,295	238,224
Gross Unrealized Gains	34	63
Gross Unrealized Losses	(134)	(122)
Estimated Fair Value	358,195	238,165
Short-term investments	194,762	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	44,387	16,797
Amortized cost	449,630	438,148
Gross Unrealized Gains	388	208
Gross Unrealized Losses	(2,762)	(2,404)
Estimated Fair Value	447,256	435,952
Short-term investments	250,837	170,759
Long-term investments	$ 152,032	$ 248,396