Condensed 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 loss
Beginning balance, shares at Dec. 31, 2023			75.5
Beginning 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	0.2
Issuance of common stock	228	$ 2			228	$ 2
Stock-based compensation	20				20
Other comprehensive loss	(1)							(1)
Net loss	(4)						(4)
Ending balance, shares at Mar. 31, 2024			90.9
Ending balance at Mar. 31, 2024	$ 707				1,561		(853)	(1)
Beginning balance, shares at Dec. 31, 2024	92.2		92.2
Beginning balance at Dec. 31, 2024	$ 485				1,617		(1,132)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (in shares)			13.6	0.1
Issuance of common stock	142				142
Stock-based compensation	16				16
Net loss	$ (112)						(112)
Ending balance, shares at Mar. 31, 2025	105.9		105.9
Ending balance at Mar. 31, 2025	$ 531				$ 1,775		$ (1,244)	$ 0