Fair Value Measurements - Schedule of Available-for-Sale Marketable Securities Held (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Marketable Securities [Line Items]
Amortized Cost	$ 1,678,796	$ 896,185
Gross Unrealized Losses	(14,941)	(31,420)
Aggregate Fair Value	1,663,855	864,765
Short-Term Marketable Securities	475,323	562,308
Long-Term Marketable Securities	1,188,532	302,457
Commercial paper
Marketable Securities [Line Items]
Amortized Cost	986
Gross Unrealized Losses	(2)
Aggregate Fair Value	984
Short-Term Marketable Securities	984
Long-Term Marketable Securities	0
Corporate bonds
Marketable Securities [Line Items]
Amortized Cost	1,198,624	624,082
Gross Unrealized Losses	(11,527)	(21,029)
Aggregate Fair Value	1,187,097	603,053
Short-Term Marketable Securities	307,876	362,458
Long-Term Marketable Securities	879,221	240,595
U.S. government agency obligations
Marketable Securities [Line Items]
Amortized Cost	479,186	252,573
Gross Unrealized Losses	(3,412)	(10,391)
Aggregate Fair Value	475,774	242,182
Short-Term Marketable Securities	166,463	180,320
Long-Term Marketable Securities	$ 309,311	61,862
Certificates of deposit
Marketable Securities [Line Items]
Amortized Cost		19,530
Gross Unrealized Losses		0
Aggregate Fair Value		19,530
Short-Term Marketable Securities		19,530
Long-Term Marketable Securities		$ 0