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ACQUISITIONS AND LICENSING AGREEMENTS - Pro Forma Information (Details) - XIIDRA® and Certain Other Ophthalmology Assets Acquisition - Bausch + Lomb - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Business Acquisition [Line Items]
Revenues	$ 9,006	$ 8,611
Net loss	(822)	(507)
Net loss attributable to Bausch Health Companies Inc.	$ (762)	$ (498)

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Business Acquisition, Pro Forma Net Income (Loss) Including Portion Attributable To Noncontrolling Interest

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-Topic 805
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