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FINANCIAL INSTRUMENTS (Tables)
 6 Months Ended
Jun. 30, 2023
Investments, Debt and Equity Securities [Abstract]  
Schedule of Cash, Cash Equivalents and Available-for-Sale Securities by Significant Investment Category The following tables show the Company’s cash, cash equivalents and available-for-sale securities by significant investment category for each period presented:
June 30, 2023
Amortized CostGross
Unrealized
Gains		Gross
Unrealized
Losses		Aggregate Fair ValueCash and Cash Equivalents
Short-term
Marketable
Securities (1)
Long-term
Marketable
Securities (2)
Level 1:
Cash$306,006 $— $— $306,006 $306,006 $— $— 
Level 2:
Money market instruments382,127 — — 382,127 382,127 — — 
Corporate debt securities420,171 34 (7,194)413,011 — 223,194 189,817 
U.S. government agency securities386,313 8 (3,508)382,813 6,248 243,078 133,487 
Commercial paper8,929 2 (1)8,930 — 8,930 — 
Asset-backed securities64,370 13 (535)63,848 — 1,375 62,473 
Subtotal1,261,910 57 (11,238)1,250,729 388,375 476,577 385,777 
Total$1,567,916 $57 $(11,238)$1,556,735 $694,381 $476,577 $385,777 
December 31, 2022
Amortized CostGross
Unrealized
Gains		Gross
Unrealized
Losses		Aggregate Fair ValueCash and Cash Equivalents
Short-term
Marketable
Securities (1)
Long-term
Marketable
Securities (2)
Level 1:
Cash$463,248 $— $— $463,248 $463,248 $— $— 
Level 2:
Money market instruments248,933 — — 248,933 248,933 — — 
Corporate debt securities504,984 34 (11,541)493,477 1,881 299,153 192,443 
U.S. government agency securities312,720 45 (3,771)308,994 — 229,846 79,148 
Commercial paper48,103 11 (22)48,092 10,469 37,623 — 
Asset-backed securities63,151 69 (592)62,628 — 384 62,244 
Subtotal1,177,891 159 (15,926)1,162,124 261,283 567,006 333,835 
Total$1,641,139 $159 $(15,926)$1,625,372 $724,531 $567,006 $333,835 
(1)    The Company’s short-term marketable securities mature in one year or less.
(2)    The Company’s long-term marketable securities mature between one and five years.