Stockholders' Equity - Total Unrecognized Estimated Compensation Cost (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2025 USD ($)
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense	$ 31,516
Remaining Weighted-Average Recognition Period ( in years)	2 years 3 months
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense	$ 56,647
Remaining Weighted-Average Recognition Period ( in years)	2 years 5 months 19 days
PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense	$ 23,426
Remaining Weighted-Average Recognition Period ( in years)	1 year 11 months 12 days
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense	$ 270
Remaining Weighted-Average Recognition Period ( in years)	4 months 2 days

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

HALOZYME THERAPEUTICS, INC. 10-K