Restructuring and Other Charges - Restructuring Charges (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 333	$ 2,835	$ 2,381	$ 8,996
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges		2,417		6,319
Employee restructuring and separation charges
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	0	516	46	2,420
Asset-related charges
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	0	900	0	1,314
Total employee and asset-related restructuring charges
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	0	1,416	46	3,734
Total employee and asset-related restructuring charges | Generics
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	0	1,317	46	2,313
Total employee and asset-related restructuring charges | Specialty
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	0	0	0	178
Total employee and asset-related restructuring charges | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	0	99	0	1,243
Other employee severance charges
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 333	$ 1,419	$ 2,335	$ 5,262