Condensed Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Revenue	$ 26	$ 48	$ 214	$ 232
General and administrative expense	27	30	84	92
Related Party
Research and development expense, net of recoveries	13	(2)	19	(32)
General and administrative expense	3	0	5	0
License and Development Services Revenue
Revenue	20	41	192	204
License and Development Services Revenue | Related Party
Revenue	20	23	192	179
Other Collaboration Revenue
Revenue	6	7	22	28
Other Collaboration Revenue | Related Party
Revenue	$ 6	$ 7	$ 22	$ 28