Term Debt (Details) - Innoviva Strategic Opportunities LLC - USD ($) $ in Millions				12 Months Ended
	Aug. 11, 2025	Mar. 12, 2025	Mar. 04, 2024	Dec. 31, 2024	Sep. 30, 2025	Sep. 30, 2024	Jul. 10, 2023	Jan. 10, 2023
August 2025 Loan
Term Loan
Aggregate amount	$ 15.0
Interest rate (as a percent)	14.00%
Loan maturity date	Jan. 11, 2029
Secured term loan
Term Loan
Aggregate amount								$ 30.0
Interest rate (as a percent)					8.00%			8.00%
Gain (loss) on debt modification				$ 2.2
Secured term loan | 2023 Credit Agreement
Term Loan
Aggregate amount							$ 25.0
Interest rate (as a percent)							14.00%
Recognized at fair value							$ 21.2
Debt issuance cost and debt discount							$ 3.8
Effective interest rate (as a percent)					41.64%	27.31%
Secured term loan | 2024 Credit Agreement
Term Loan
Aggregate amount			$ 35.0
Interest rate (as a percent)			14.00%
Debt issuance costs			$ 0.1
Proceeds from secured debt			$ 35.0
Effective interest rate (as a percent)					12.68%	14.25%
Secured term loan | March 2025 Credit Agreement
Term Loan
Aggregate amount		$ 10.0
Interest rate (as a percent)		14.00%
Proceeds from secured debt		$ 10.0
Effective interest rate (as a percent)					14.19%
Secured term loan | August 2025 Loan
Term Loan
Aggregate amount	$ 15.0
Interest rate (as a percent)	14.00%
Proceeds from secured debt	$ 15.0
Effective interest rate (as a percent)					12.27%