Segment Results - Schedule of Depreciation Expense for Reportable Segments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Depreciation expense	$ 69,000	$ 101,368	$ 209,999
Operating segments | U.S. Branded - Specialty & Established Pharmaceuticals
Segment Reporting Information [Line Items]
Depreciation expense	12,573	14,542	16,957
Operating segments | U.S. Branded - Sterile Injectables
Segment Reporting Information [Line Items]
Depreciation expense	14,287	10,500	8,411
Operating segments | U.S. Generic Pharmaceuticals
Segment Reporting Information [Line Items]
Depreciation expense	32,689	66,016	174,652
Operating segments | International Pharmaceuticals
Segment Reporting Information [Line Items]
Depreciation expense	4,234	4,925	3,332
Corporate unallocated
Segment Reporting Information [Line Items]
Depreciation expense	$ 5,217	$ 5,385	$ 6,647