Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Deferred tax assets:
Net operating loss carryforwards	$ 2,254,164	$ 1,975,436
Insurance reserves and accruals	425,547	382,532
Research tax credits	406,978	0
Stock-based compensation	17,851	16,837
Research capitalization	202,235	288,464
Accrued legal settlement/fees	150,765	92,975
Lease liability	73,551	73,356
Accrued and other liabilities	31,378	47,233
Capital losses	7	64
Other assets	22,874	0
Total deferred tax assets	3,585,350	2,876,897
Less: Valuation allowance	(285,548)	(2,690,489)	$ (2,715,841)	$ (2,706,982)
Deferred tax assets, net of valuation allowance	3,299,802	186,408
Deferred tax liabilities:
State income taxes	(168,532)	(132,126)
Operating lease right-of-use assets	(66,416)	(63,632)
Prepaid expenses	(122,068)	0
Other liabilities	(60,318)	(427)
Total deferred tax liabilities	(417,334)	(196,185)
Net deferred tax assets (liabilities)	$ 2,882,468
Net deferred tax assets (liabilities)		$ (9,777)

Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Lease Liability

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