Legal Proceedings (Details) - USD ($) $ in Millions			12 Months Ended
	Sep. 05, 2018	Apr. 07, 2017	Dec. 31, 2018
Akorn, Inc v. Fresenius
Loss Contingencies [Line Items]
Damages sought			$ 102.0
Loss contingency accrual			5.0
Date Integrity Securities Litigation. First Occurrence
Loss Contingencies [Line Items]
Damages sought	$ 1,070.0
Date Integrity Securities Litigation, Second Occurrence
Loss Contingencies [Line Items]
Damages sought	$ 613.0
Ann Pope and Anthony Pope v. Horatio V. Cabasares, M.D., P.C. Houston Healthcare Systems, Inc., Akorn Sales, Inc., and Akorn, Inc.
Loss Contingencies [Line Items]
Damages sought		$ 20.5
Loss contingency accrual			20.5
Insurance settlements receivable			$ 10.0