Condensed Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Receivable from collaboration partners	$ 5	$ 13
Other assets	0	(5)
Deferred revenue	(28)	(42)
Proceeds from issuance of common stock	142	228
Related Party
Receivable from collaboration partners	2	(1)
Other assets	0	6
Deferred revenue	(28)	(54)
Proceeds from issuance of common stock	$ 14	$ 228