RESTRUCTURING - Narrative (Details) $ in Thousands		1 Months Ended	3 Months Ended		9 Months Ended
	Nov. 05, 2020 USD ($) position	Apr. 30, 2022 USD ($) position	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)
Other restructuring charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 30,000	$ 24,800	$ 77,100	$ 37,500
2020 Restructuring Initiative
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected number of positions eliminated | position	300
Restructuring charges			91	35,952	7,347	67,850
2020 Restructuring Initiative | Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, cost incurred to date			51,000		51,000
2020 Restructuring Initiative | Asset impairments
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, cost incurred to date			49,500		49,500
2020 Restructuring Initiative | Inventory adjustments
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, cost incurred to date			11,500		11,500
2020 Restructuring Initiative | Employee Separation, Continuity and Other Benefit-Related Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges					1,290
Restructuring and related cost, cost incurred to date			53,900		53,900
2020 Restructuring Initiative | Other restructuring charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges					798
Restructuring and related cost, cost incurred to date			3,500		3,500
2020 Restructuring Initiative | Operating segments | Generic Pharmaceuticals
Restructuring Cost and Reserve [Line Items]
Restructuring charges			400	31,000	5,500	53,500
Restructuring and related cost, cost incurred to date			134,300		134,300
2020 Restructuring Initiative | Cost of revenues
Restructuring Cost and Reserve [Line Items]
Restructuring charges			375	$ (11,050)	4,025	$ 9,294
2020 Restructuring Initiative | Minimum
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, expected cost savings	$ 85,000
2020 Restructuring Initiative | Minimum | Cost of revenues
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, expected cost savings	65,000
2020 Restructuring Initiative | Minimum | Other expenses
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, expected cost savings	20,000
2020 Restructuring Initiative | Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, expected cost savings	95,000
2020 Restructuring Initiative | Maximum | Cost of revenues
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, expected cost savings	70,000
2020 Restructuring Initiative | Maximum | Other expenses
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, expected cost savings	$ 25,000
2022 Restructuring Initiative
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected number of positions eliminated | position		100
Restructuring charges			(579)		29,525
2022 Restructuring Initiative | Employee Separation, Continuity and Other Benefit-Related Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges					18,406
2022 Restructuring Initiative | Other restructuring charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges					1,102
2022 Restructuring Initiative | Operating segments | Generic Pharmaceuticals
Restructuring Cost and Reserve [Line Items]
Restructuring charges			100		17,000
2022 Restructuring Initiative | Cost of revenues
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 68		$ 13,352
2022 Restructuring Initiative | Minimum
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, expected cost savings		$ 55,000
2022 Restructuring Initiative | Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, expected cost savings		$ 65,000