Summary of Significant Accounting Policies - Additional Information (Details) - segment	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020
Summary Of Significant Accounting Policies [Line Items]
Number of business segments		1
VIVITROL
Summary Of Significant Accounting Policies [Line Items]
Increase (decrease) in units sold due to COVID19 pandemic, percentage	(9.00%)
ARISTADA
Summary Of Significant Accounting Policies [Line Items]
Increase (decrease) in units sold due to COVID19 pandemic, percentage	11.00%