Segment Results - Schedule of Reportable Segments Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) Reportable_Business_Segments	Jun. 30, 2018 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | Reportable_Business_Segments			4
Total net revenues from external customers	$ 699,727	$ 714,696	$ 1,420,138	$ 1,415,223
Total segment adjusted income from continuing operations before income tax	315,908	365,858	653,191	717,115
Branded Pharmaceuticals
Segment Reporting Information [Line Items]
Total net revenues from external customers	209,013	212,637	412,538	412,872
Total segment adjusted income from continuing operations before income tax	82,965	83,749	161,973	177,563
Sterile Injectables
Segment Reporting Information [Line Items]
Total net revenues from external customers	244,280	217,843	514,328	433,697
Total segment adjusted income from continuing operations before income tax	172,188	173,308	368,371	342,753
Generic Pharmaceuticals
Segment Reporting Information [Line Items]
Total net revenues from external customers	217,784	241,236	436,310	490,476
Total segment adjusted income from continuing operations before income tax	49,308	90,302	99,305	164,582
International Pharmaceuticals
Segment Reporting Information [Line Items]
Total net revenues from external customers	28,650	42,980	56,962	78,178
Total segment adjusted income from continuing operations before income tax	$ 11,447	$ 18,499	$ 23,542	$ 32,217