Revenue - Disaggregated Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Disaggregation of Revenue [Line Items]
Total revenues	$ 480,999	$ 325,719	$ 857,707	$ 590,580
Royalties
Disaggregation of Revenue [Line Items]
Total revenues	307,699	205,639	548,380	373,831
Product sales, net
Disaggregation of Revenue [Line Items]
Total revenues	129,626	81,510	260,050	159,551
Proprietary product sales
Disaggregation of Revenue [Line Items]
Total revenues	55,428	46,452	97,301	82,793
Bulk rHuPH20 sales
Disaggregation of Revenue [Line Items]
Total revenues	59,618	23,271	133,115	50,296
Device partnered product sales
Disaggregation of Revenue [Line Items]
Total revenues	14,580	11,787	29,634	26,462
Revenues under collaborative agreements
Disaggregation of Revenue [Line Items]
Total revenues	43,674	38,570	49,277	57,198
Upfront license and target nomination fees
Disaggregation of Revenue [Line Items]
Total revenues	35,500	0	35,500	220
Event-based development and regulatory milestones and other fees
Disaggregation of Revenue [Line Items]
Total revenues	5,706	24,500	5,706	24,500
Sales-based milestones
Disaggregation of Revenue [Line Items]
Total revenues	0	10,000	0	25,000
Device licensing and development revenue
Disaggregation of Revenue [Line Items]
Total revenues	$ 2,468	$ 4,070	$ 8,071	$ 7,478