Stock-Based Compensation - Summary of weighted-average assumptions used to calculate estimated value of stock options (Details) - Stock options - Innoviva [Member] - $ / shares		3 Months Ended				9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022		Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Valuation Assumptions
Risk-free interest rate	[1]		0.00%
Volatility	[1]		0.00%
Weighted-average estimated fair value of stock options granted			$ 0	[1]	$ 0
Weighted-average
Valuation Assumptions
Dividend yield		0.00%	0.00%	[1]		0.00%	0.00%
Minimum
Valuation Assumptions
Risk-free interest rate		4.13%				3.50%	1.60%
Expected term (in years)		6 years 3 days				5 years 1 month 28 days	5 years 6 months
Volatility		37.30%				37.30%	38.80%
Weighted-average estimated fair value of stock options granted		$ 5.66				$ 5.22	$ 6.98
Maximum
Valuation Assumptions
Risk-free interest rate		4.21%				4.21%	3.03%
Expected term (in years)		6 years 2 months 19 days				6 years 2 months 19 days	6 years 1 month 9 days
Volatility		37.80%				38.50%	40.50%
Weighted-average estimated fair value of stock options granted		$ 5.97				$ 5.97	$ 7.73

[1] There were no options granted for the three months ended September 30, 2022.