Income Taxes - Summary of Significant Components of Net Deferred Tax Balances (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets:
Accruals and reserves	$ 16,413	$ 22,475
Intangible assets	139,612	168,661
IRC 174 capitalized R&D	598,669	449,253
Stock-based compensation	58,171	70,563
Loss carryforwards	2,757,814	2,774,231
Tax credit carryforwards	1,060,486	969,368
Lease liability	128,072	126,637
Other	67,958	51,764
Total deferred tax assets	4,827,195	4,632,952
Deferred tax liabilities:
Right-of-use asset	(112,907)	(111,777)
Investments	(18,333)	(20,183)
Other	(18,445)	(28,416)
Total deferred tax liabilities	(149,685)	(160,376)
Total net deferred tax assets before valuation allowance	4,677,510	4,472,576
Valuation allowance	(4,677,088)	(4,471,571)
Total net deferred tax assets before valuation allowance	$ 422	$ 1,005

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Deferred Tax Assets (Liabilities), Net, Excluding Valuation Allowance

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Deferred tax liabilities right of use asset.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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