Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Deferred tax assets:
Net operating loss carryforwards	$ 983,652	$ 959,864
Accruals and reserves	52,750	47,986
Stock-based compensation	29,572	37,981
Research and development credits	177,109	159,604
Intangibles	135,564	135,500
Capitalized research and development expenses	231,819	219,176
Lease liability	44,682	60,795
Unrealized losses on marketable securities	0	32,108
Investments and other basis differences	51,368	11,952
Other	31,852	24,878
Gross deferred tax assets	1,738,368	1,689,844
Valuation allowance	(1,533,933)	(1,357,300)
Net deferred tax assets	204,435	332,544
Deferred tax liabilities:
Capitalized software	(36,109)	(36,552)
Prepaid expenses	(1,073)	(1,587)
Acquired intangibles	(81,415)	(202,778)
Right-of-use asset	(19,964)	(35,734)
Deferred commissions	(50,703)	(59,675)
Net deferred tax asset	$ 15,171
Net deferred tax liability		$ (3,782)

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Amount of deferred tax liability attributable to taxable temporary differences from deferred commissions.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from intangible assets including goodwill.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from in-process research and development costs expensed in connection with a business combination.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from investments (excludes investments in subsidiaries and equity method investments).

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible research tax credit carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from reserves and accruals.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary difference from unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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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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Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.

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Amount of deferred tax liability attributable to taxable temporary differences from capitalized software.

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Amount of deferred tax liability attributable to taxable temporary differences from intangible assets other than goodwill.

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Amount of deferred tax liability attributable to taxable temporary differences from leasing arrangements.

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Amount of deferred tax consequences attributable to taxable temporary differences derived from prepaid expenses.

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