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Description of Operations and Summary of Significant Accounting Policies (Details) $ in Billions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023 Customer	Sep. 30, 2024 USD ($) Customer	Sep. 30, 2023	Dec. 31, 2023
Description of Operations and Summary of Significant Accounting Policies
Number of major customers | Customer		3	3
Customer Concentration Risk | Net Product Sales | La Jolla [Member] | Customer One
Description of Operations and Summary of Significant Accounting Policies
Concentration Risk, Percentage	27.00%	27.00%	31.00%	32.00%
Customer Concentration Risk | Net Product Sales | La Jolla [Member] | Customer Two
Description of Operations and Summary of Significant Accounting Policies
Concentration Risk, Percentage	21.00%	28.00%	23.00%	28.00%
Customer Concentration Risk | Net Product Sales | La Jolla [Member] | Customer Three
Description of Operations and Summary of Significant Accounting Policies
Concentration Risk, Percentage	20.00%	26.00%	23.00%	27.00%
Customer Concentration Risk | Receivables from Net Product Sales | La Jolla [Member] | Customer One
Description of Operations and Summary of Significant Accounting Policies
Concentration Risk, Percentage			32.00%		29.00%
Customer Concentration Risk | Receivables from Net Product Sales | La Jolla [Member] | Customer Two
Description of Operations and Summary of Significant Accounting Policies
Concentration Risk, Percentage			15.00%		19.00%
Customer Concentration Risk | Receivables from Net Product Sales | La Jolla [Member] | Customer Three
Description of Operations and Summary of Significant Accounting Policies
Concentration Risk, Percentage			12.00%		15.00%
Sarissa Capital
Description of Operations and Summary of Significant Accounting Policies
Percentage of common stock owned by a related party	11.60%		11.60%
Long-Acting Beta2 Agonist (LABA) Collaboration | GSK | RELVAR/BREO
Description of Operations and Summary of Significant Accounting Policies
Royalty rate for first level of annual global net sales (as a percent)			15.00%
Annual global sales level used to determine royalty rate | $			$ 3.0
Royalty rate for sales above first level of annual global net sales (as a percent)			5.00%
Long-Acting Beta2 Agonist (LABA) Collaboration | GSK | ANORO | Minimum
Description of Operations and Summary of Significant Accounting Policies
Royalty rate for combination products (as a percent)			6.50%
Long-Acting Beta2 Agonist (LABA) Collaboration | GSK | ANORO | Maximum
Description of Operations and Summary of Significant Accounting Policies
Royalty rate for combination products (as a percent)			10.00%

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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