License Agreements - Hangzhou Highlightll Pharmaceutical Agreement (Details) - USD ($)	3 Months Ended			9 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
License and other agreements
Development milestone payment to be paid	$ 155,538,000			$ 155,538,000
Milestone payment to be paid upon regulatory achievement	701,975,000			701,975,000
Commercial milestone payment to be paid	3,185,450,000			3,185,450,000
Research and development	141,169,000		$ 157,607,000	513,120,000	$ 628,398,000
Highlightll Pharmaceutical Co, Ltd.
License and other agreements
Research and development	0	$ 15,000,000	$ 0		$ 0
Highlightll Pharmaceutical Co, Ltd. | Collaborative arrangement
License and other agreements
Development milestone payment to be paid	60,000,000			60,000,000
Milestone payment to be paid upon regulatory achievement	37,500,000			37,500,000
Commercial milestone payment to be paid	$ 837,500,000			$ 837,500,000