Consolidated Statements of Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Equity Award Programs	Common Stock	Common Stock Equity Award Programs	Common stock and additional paid-in capital	Common stock and additional paid-in capital Equity Award Programs	Accumulated deficit	Accumulated other comprehensive income (loss)
Beginning balance, shares at Dec. 31, 2022			72.9
Beginning balance at Dec. 31, 2022	$ 657				$ 1,206		$ (542)	$ (7)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (in shares)			1.2	1.4
Issuance of common stock	25	$ 7			25	$ 7
Stock-based compensation	73				73
Other comprehensive income	7							7
Net loss	(307)						(307)
Ending balance, shares at Dec. 31, 2023			75.5
Ending balance at Dec. 31, 2023	462				1,311		(849)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (in shares)			15.2	1.5
Issuance of common stock	228	2			228	2
Stock-based compensation	76				76
Net loss	$ (283)						(283)
Ending balance, shares at Dec. 31, 2024	92.2		92.2
Ending balance at Dec. 31, 2024	$ 485				1,617		(1,132)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (in shares)			30.8	2.3
Issuance of common stock	429	$ 10			429	$ 10
Stock-based compensation	60				60
Net loss	$ (353)						(353)
Ending balance, shares at Dec. 31, 2025	125.3		125.3
Ending balance at Dec. 31, 2025	$ 631				$ 2,116		$ (1,485)	$ 0