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Marketable Securities - Summary of Available-for-sale Marketable Securities (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Marketable Securities [Line Items] |  |
Amortized Cost | $ 1,479,543 | $ 1,286,225
Unrealized Gain | 17 | 80
Unrealized Losses | (14,879) | (2,832)
Fair Value | 1,464,681 | 1,283,473
Commercial debt securities |  |
Marketable Securities [Line Items] |  |
Amortized Cost | 998,355 | 1,034,573
Unrealized Gain | 0 | 43
Unrealized Losses | (12,370) | (2,564)
Fair Value | 985,985 | 1,032,052
Certificates of deposit |  |
Marketable Securities [Line Items] |  |
Amortized Cost | 72,843 | 14,574
Unrealized Gain | 3 | 5
Unrealized Losses | (167) | (10)
Fair Value | 72,679 | 14,569
U.S. government treasury securities |  |
Marketable Securities [Line Items] |  |
Amortized Cost | 179,598 | 77,628
Unrealized Gain | 6 | 18
Unrealized Losses | (1,425) | (204)
Fair Value | 178,179 | 77,442
Commercial paper |  |
Marketable Securities [Line Items] |  |
Amortized Cost | 220,720 | 151,379
Unrealized Gain | 8 | 14
Unrealized Losses | (849) | (37)
Fair Value | 219,879 | 151,356
Non-U.S. government securities |  |
Marketable Securities [Line Items] |  |
Amortized Cost | 8,027 | 8,071
Unrealized Gain | 0 | 0
Unrealized Losses | (68) | (17)
Fair Value | $ 7,959 | $ 8,054

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- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
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- Definition Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
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