Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Total revenues	$ 258	$ 117	$ 112
Related Party
Research and development expense, recoveries	39	110	132
General and administrative expense, net of recoveries	(2)	0	1
License and Development Services Revenue
Total revenues	222	80	74
License and Development Services Revenue | Related Party
Total revenues	207	75	74
Other Collaboration Revenue
Total revenues	36	37	38
Other Collaboration Revenue | Related Party
Total revenues	$ 36	$ 37	$ 33