Segment Results - Schedule of Reportable Segments Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) Reportable_Business_Segments	Mar. 31, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | Reportable_Business_Segments	4
Total net revenues from external customers	$ 820,405	$ 720,411
Total segment adjusted income from continuing operations before income tax	433,842	353,972
Branded Pharmaceuticals
Segment Reporting Information [Line Items]
Certain legal costs		16,300
Total net revenues from external customers	204,073	203,525
Total segment adjusted income from continuing operations before income tax	98,422	95,283
Sterile Injectables
Segment Reporting Information [Line Items]
Total net revenues from external customers	336,390	270,048
Total segment adjusted income from continuing operations before income tax	263,896	196,183
Generic Pharmaceuticals
Segment Reporting Information [Line Items]
Certain legal costs		400
Total net revenues from external customers	251,283	218,526
Total segment adjusted income from continuing operations before income tax	57,327	50,411
International Pharmaceuticals
Segment Reporting Information [Line Items]
Total net revenues from external customers	28,659	28,312
Total segment adjusted income from continuing operations before income tax	$ 14,197	$ 12,095