CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (152)	$ (48)
Other comprehensive (loss) income
Foreign currency translation adjustment	(192)	21
Pension and postretirement benefit plan adjustments, net of income taxes	(5)	0
Other comprehensive (loss) income	(197)	21
Comprehensive loss	(349)	(27)
Comprehensive loss (income) attributable to noncontrolling interest	2	(4)
Comprehensive loss attributable to Bausch Health Companies Inc.	$ (347)	$ (31)