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Available-for-sale Securities - Summary of Amortized Cost and Estimated Fair Value of Available-for-sale Securities and Cash Equivalents and Gross Unrealized Gains and Losses (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost | $ 2,102,751 | $ 2,286,026
Gross Unrealized Gain | 1,970 | 1,866
Gross Unrealized Loss | (263) | (545)
Estimated Fair Value | 2,104,458 | 2,287,347
Marketable Securities |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost | 1,767,403 | 1,744,904
Gross Unrealized Gain | 1,970 | 1,862
Gross Unrealized Loss | (252) | (531)
Estimated Fair Value | 1,769,121 | 1,746,235
Marketable Securities | Commercial Paper |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost | 147,550 | 158,838
Gross Unrealized Gain | 27 | 72
Gross Unrealized Loss | (37) | (17)
Estimated Fair Value | 147,540 | 158,893
Marketable Securities | Certificates of Deposit |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost | 3,832 | 9,039
Gross Unrealized Gain | 4 | 10
Gross Unrealized Loss | 0 | (1)
Estimated Fair Value | 3,836 | 9,048
Marketable Securities | U.S. Government and Agency Securities |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost | 933,128 | 1,011,019
Gross Unrealized Gain | 1,032 | 1,123
Gross Unrealized Loss | (177) | (382)
Estimated Fair Value | 933,983 | 1,011,760
Marketable Securities | Corporate Bonds |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost | 682,893 | 566,008
Gross Unrealized Gain | 907 | 657
Gross Unrealized Loss | (38) | (131)
Estimated Fair Value | 683,762 | 566,534
Cash Equivalents |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost | 335,348 | 541,122
Gross Unrealized Gain | 0 | 4
Gross Unrealized Loss | (11) | (14)
Estimated Fair Value | 335,337 | 541,112
Cash Equivalents | Money Market Funds |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost | 247,266 | 409,233
Gross Unrealized Gain | 0 | 0
Gross Unrealized Loss | 0 | 0
Estimated Fair Value | 247,266 | 409,233
Cash Equivalents | Commercial Paper |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost | 63,015 | 86,778
Gross Unrealized Gain | 0 | 0
Gross Unrealized Loss | (11) | (13)
Estimated Fair Value | 63,004 | 86,765
Cash Equivalents | U.S. Government and Agency Securities |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost | 23,838 | 39,991
Gross Unrealized Gain | 0 | 4
Gross Unrealized Loss | 0 | (1)
Estimated Fair Value | 23,838 | 39,994
Cash Equivalents | Corporate Bonds |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost | 1,229 | 5,120
Gross Unrealized Gain | 0 | 0
Gross Unrealized Loss | 0 | 0
Estimated Fair Value | $ 1,229 | $ 5,120

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