Condensed Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Receivable from collaboration partners	$ 15	$ 716
Other assets	(12)	(4)
Deferred revenue	(51)	(78)
Proceeds from issuance of common stock	25	0
Related Party
Receivable from collaboration partners	17	718
Other assets	4	2
Deferred revenue	(47)	(73)
Proceeds from issuance of common stock	$ 20	$ 0