Segment Results - Schedule of Reportable Segments Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) segment	Jun. 30, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment			4
Total net revenues from external customers	$ 687,588	$ 699,727	$ 1,507,993	$ 1,420,138
Total segment adjusted income from continuing operations before income tax	347,625	334,892	781,467	688,864
Branded Pharmaceuticals
Segment Reporting Information [Line Items]
Certain legal costs		18,600		34,800
Total net revenues from external customers	129,521	209,013	333,594	412,538
Total segment adjusted income from continuing operations before income tax	49,174	101,535	147,596	196,818
Sterile Injectables
Segment Reporting Information [Line Items]
Total net revenues from external customers	319,214	244,280	655,604	514,328
Total segment adjusted income from continuing operations before income tax	241,753	172,188	505,649	368,371
Generic Pharmaceuticals
Segment Reporting Information [Line Items]
Certain legal costs		400		800
Total net revenues from external customers	215,879	217,784	467,162	436,310
Total segment adjusted income from continuing operations before income tax	47,394	49,722	104,721	100,133
International Pharmaceuticals
Segment Reporting Information [Line Items]
Total net revenues from external customers	22,974	28,650	51,633	56,962
Total segment adjusted income from continuing operations before income tax	$ 9,304	$ 11,447	$ 23,501	$ 23,542