GOODWILL AND INTANGIBLE ASSETS - Components (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Definite-Lived Intangible Assets:
Gross Carrying Amount	$ 897,339	$ 496,708
Accumulated Amortization	(347,314)	(307,499)
Total	$ 550,025	189,209
Remaining Weighted Average Amortization Period	9 years 9 months 18 days
Indefinite-Lived Intangible Assets:
Total Intangible Assets, Gross	$ 917,139	516,508
Total Intangible Assets, Net	569,825	209,009
In process research and development
Indefinite-Lived Intangible Assets:
Gross Carrying Amount	19,800	19,800
Acquired ANDAs intangible assets
Definite-Lived Intangible Assets:
Gross Carrying Amount	210,411	209,780
Accumulated Amortization	(118,804)	(100,660)
Total	$ 91,607	109,120
Remaining Weighted Average Amortization Period	4 years 7 months 6 days
NDAs and product rights
Definite-Lived Intangible Assets:
Gross Carrying Amount	$ 644,871	244,871
Accumulated Amortization	(203,143)	(184,861)
Total	$ 441,728	60,010
Remaining Weighted Average Amortization Period	11 years
Marketing and distribution rights
Definite-Lived Intangible Assets:
Gross Carrying Amount	$ 17,157	17,157
Accumulated Amortization	(14,992)	(14,271)
Total	$ 2,165	2,886
Remaining Weighted Average Amortization Period	2 years 2 months 12 days
Customer relationships
Definite-Lived Intangible Assets:
Gross Carrying Amount	$ 24,900	24,900
Accumulated Amortization	(10,375)	(7,707)
Total	$ 14,525	$ 17,193
Remaining Weighted Average Amortization Period	4 years 1 month 6 days