Segment Information - Percentage of Revenue (Details) - Total revenue - Customer concentration risk	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Viatris
Segment Information
Percentage of total revenues	63.00%	44.00%	0.00%
Janssen
Segment Information
Percentage of total revenues	37.00%	42.00%	51.00%
Pfizer
Segment Information
Percentage of total revenues	0.00%	14.00%	0.00%
Alfasigma
Segment Information
Percentage of total revenues	0.00%	0.00%	18.00%

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
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