Income Taxes (Tables)

12 Months Ended

Dec. 31, 2023

Income Tax Disclosure [Abstract]

Schedule of Income (Loss) before Income Tax, Domestic and Foreign

The components of loss before income taxes were as follows (in thousands):

	Year Ended December 31,
	2023		2022		2021
Domestic	$	(1,151,493)	$	(916,592)	$	(472,141)
Foreign	(6,990)		(13,997)		(31,659)
	$	(1,158,483)	$	(930,589)	$	(503,800)

Schedule of Provision for (benefit from) Income Taxes

The components of the provision for/(benefit from) income taxes were as follows (in thousands):

	Year Ended December 31,
	2023		2022		2021
Current provision:
Federal	$	(144)	$	144	$	—
State	(561)		2,405		678
Foreign	1,255		1,582		—
Total current provision	550		4,131		678
Deferred provision:
Federal	—		(474)		(878)
State	—		(105)		(120)
Foreign	(96)		—		—
Total deferred provision	(96)		(579)		(998)
Provision for/(benefit from) income taxes	$	454	$	3,552	$	(320)

Schedule of Effective Income Tax Rate Reconciliation

The provision for/(benefit from) income taxes differs from the amount estimated by applying the statutory income (loss) before taxes as follows:

	Year Ended December 31,
	2023		2022		2021
Federal tax at statutory rate	21	%	21	%	21	%
State tax at statutory rate, net of federal benefit	2		2		2
Research and development credits	6		2		10
Change in valuation allowance	(27)		(21)		(117)
Stock-based compensation	(3)		(4)		84
Other	1		0		0
Provision for/(benefit from) income taxes	0	%	0	%	0	%

Schedule of Deferred Tax Assets and Liabilities

The following table presents the components of the Company’s deferred tax assets (liabilities) for the periods presented (in thousands):

	Year Ended December 31,
	2023		2022		2021
Deferred tax assets:
Accrued expenses	$	14,231	$	13,593	$	11,466
Deferred revenue	246,144		198,130		107,221
Net operating loss carryforwards	599,804		490,309		505,668
Tax credit carryforwards	155,246		85,527		65,855
Stock-based compensation	29,083		28,238		35,368
Operating lease liabilities	176,007		130,688		56,897
Capitalized research and development	366,898		178,488		—
Interest	—		—		1,556
Other	2,914		1,988		1,369
Total gross deferred tax asset	1,590,327		1,126,961		785,400
Less: valuation allowance	(1,222,211)		(907,226)		(711,297)
Net deferred tax assets	368,116		219,735		74,103
Deferred tax liabilities:
Fixed assets	(28,645)		(92,009)		(13,889)
Intangible assets	(2,735)		(6,694)		(9,060)
Operating lease right-of-use assets	(154,334)		(121,032)		(51,154)
Deferred cost of revenue	(182,495)		—		—
Total deferred tax liabilities	(368,209)		(219,735)		(74,103)
Net deferred tax liabilities	$	(93)	$	—	$	—

Schedule of Unrecognized Tax Benefits Roll Forward

A reconciliation of the beginning and ending amounts of unrecognized tax benefits is as follows (in thousands):

	As of December 31,
	2023		2022		2021
Unrecognized tax benefits at beginning of year	$	96,372	$	72,919	$	19,386
Increases related to current year tax positions	59,917		25,458		53,440
Increases related to prior year tax positions	16,100		865		93
Decreases related to prior year tax positions	—		(2,870)		—
Unrecognized tax benefits at end of year	$	172,389	$	96,372	$	72,919