Segment Information - Significant Customers (Details)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Product Concentration Risk | Percent of Total Gross Product Revenues | McKesson Corporation
Concentration Risk [Line Items]
Concentration risk percentage	25.00%	22.00%	20.00%
Product Concentration Risk | Percent of Total Gross Product Revenues | Accredo Health Group, Inc.
Concentration Risk [Line Items]
Concentration risk percentage	12.00%	12.00%	15.00%
Product Concentration Risk | Percent of Total Gross Product Revenues | Walgreen Co.
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	10.00%	14.00%
Product Concentration Risk | Percent of Total Gross Product Revenues | Lloyds Pharmacy
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%
Credit Concentration Risk | Percent of Accounts Receivable | McKesson Corporation
Concentration Risk [Line Items]
Concentration risk percentage	22.00%	21.00%
Credit Concentration Risk | Percent of Accounts Receivable | Accredo Health Group, Inc.
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	10.00%
Credit Concentration Risk | Percent of Accounts Receivable | Walgreen Co.
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	10.00%
Credit Concentration Risk | Percent of Accounts Receivable | Lloyds Pharmacy
Concentration Risk [Line Items]
Concentration risk percentage	12.00%	15.00%