CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Cash flows from operating activities:
Net loss	$ (2,698,051)	$ (2,713,942)	$ (2,828,420)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	451,243	295,337	233,531
Amortization of insurance premium	35,467	33,330	39,507
Non-cash operating lease cost	47,527	30,765	26,201
Stock-based compensation	271,275	285,872	257,283
Inventory and firm purchase commitments write-downs	799,078	590,198	906,069
Change in fair value of common stock warrant liability	(19,514)	(34,150)	(86,926)
Change in fair value of equity securities of a related party	15,785	43,057	(5,999)
Change in fair value of derivative liabilities associated with redeemable convertible preferred stock (related party)	(623,225)	(155,350)	0
Net accretion of investment discounts/premiums	(23,631)	(76,739)	(105,432)
Gain on extinguishment of debt	(121,765)	0	0
Other non-cash items	20,026	5,983	34,205
Changes in operating assets and liabilities:
Accounts receivable (including $(62,631), $(22,383), and $(35,526) from a related party for the years ended December 31, 2025, 2024, and 2023, respectively)	(65,690)	(61,279)	(32,509)
Inventory	(1,449,071)	(334,242)	(658,010)
Prepaid expenses	(41,972)	(16,675)	(45,641)
Other assets	(155,266)	(203,869)	(117,032)
Accounts payable	318,456	34,756	(139,519)
Other liabilities (including $2,100, $4,900, and $107,763 associated with a related party for the years ended December 31, 2025, 2024, and 2023, respectively)	307,416	257,274	32,939
Net cash used in operating activities	(2,931,912)	(2,019,674)	(2,489,753)
Cash flows from investing activities:
Purchases of property, plant and equipment (including $(225,864), $(164,683), and $(80,511) from a related party for the years ended December 31, 2025, 2024, and 2023, respectively)	(868,158)	(883,841)	(910,644)
Purchases of investments (including $(30,000), $(35,000), and nil from a related party for the years ended December 31, 2025, 2024, and 2023, respectively)	(309,557)	(4,622,890)	(3,998,282)
Proceeds from maturities of investments (including $15,000 from a related party for the year ended December 31, 2025, and nil for the years ended December 31, 2024 and 2023)	2,654,090	4,112,084	3,720,890
Proceeds from sale of investments	0	100,193	148,388
Proceeds from government grant	0	0	97,500
Other investing activities	2,054	0	(4,827)
Net cash provided by (used in) investing activities	1,478,429	(1,294,454)	(946,975)
Cash flows from financing activities:
Purchase of capped call options	(118,250)	0	0
Repurchases of 2026 Notes	(1,679,609)	0	0
Proceeds from borrowings from a related party	341,240	79,844	62,911
Repayment of borrowings to a related party	0	(25,856)	0
Proceeds from exercise of stock options	2,342	4,883	10,343
Proceeds from employee stock purchase plan	22,808	19,208	23,836
Tax withholding payments for net settlement of employee awards	(12,911)	(10,021)	(17,615)
Payments for finance lease liabilities	(3,510)	(3,166)	(5,425)
Payments for credit facility issuance costs	(9,723)	(6,244)	0
Net cash provided by financing activities	887,344	3,549,673	3,070,915
Net increase (decrease) in cash, cash equivalents, and restricted cash	(566,139)	235,545	(365,813)
Beginning cash, cash equivalents, and restricted cash	1,607,052	1,371,507	1,737,320
Ending cash, cash equivalents, and restricted cash	1,040,913	1,607,052	1,371,507
Supplemental disclosure of cash flow information:
Cash paid for interest, net of amounts capitalized	55,819	25,526	18,182
Cash paid for taxes	4,505	88	37
Supplemental disclosure of non-cash investing and financing activity:
Increases (decrease) in accounts payable and accrued liabilities related to property, plant and equipment (including $81,580, $(19,725) and $8,530 associated with a related party for the years ended December 31, 2025, 2024, and 2023, respectively)	129,303	(68,930)	35,849
Government grant (related party) reflected in property, plant and equipment	0	(62,471)	(99,025)
Property, plant and equipment and right-of-use assets obtained through leases	184,160	24,173	32,477
Equity securities obtained through Strategic Technology Arrangement	0	0	73,193
2031 Notes
Cash flows from financing activities:
Proceeds from convertible debt	975,000	0	0
Payment for issuance costs	(11,675)	0	0
2030 Notes
Cash flows from financing activities:
Proceeds from convertible debt	1,100,000	0	0
Payment for issuance costs	(18,090)	0	0
2025 Subscription Agreement
Cash flows from financing activities:
Proceeds from issuance of common stock	300,000	0	0
Payments of issuance costs for the 2025 Subscription Agreement	(278)	0	0
2024 Underwriting Agreement
Cash flows from financing activities:
Proceeds from issuance of common stock	0	718,357	0
2024 Subscription Agreement
Cash flows from financing activities:
Proceeds from issuance of common stock	0	1,025,660	0
2023 Underwriting Agreement
Cash flows from financing activities:
Proceeds from issuance of common stock	0	0	1,184,224
2023 Subscription Agreement
Cash flows from financing activities:
Proceeds from issuance of common stock	0	0	1,812,641
Series A Derivative Liability
Cash flows from financing activities:
Proceeds from issuance of redeemable convertible preferred stock to a related party	0	1,000,000	0
Payments of issuance costs for redeemable convertible preferred stock	0	(2,351)	0
Series B Derivative Liability
Cash flows from financing activities:
Proceeds from issuance of redeemable convertible preferred stock to a related party	0	750,000	0
Payments of issuance costs for redeemable convertible preferred stock	0	(641)	0
Change in fair value of common stock warrant liability
Adjustments to reconcile net loss to net cash used in operating activities:
Change in fair value of common stock warrant liability	$ (19,514)	$ (34,150)	$ (86,926)