CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (1,783)	$ (4,144)	$ 2,404
Pension and postretirement benefit plan adjustments:
Net actuarial (loss) gain arising during the year	(8)	(7)	20
Amortization of prior service credit	(4)	(4)	(4)
Amortization or settlement recognition of net loss	2	1	2
Income tax (expense) benefit	(2)	3	(4)
Foreign currency impact	(2)	0	1
Net pension and postretirement benefit plan adjustments	(14)	(7)	15
Foreign currency translation adjustment	64	(237)	202
Net unrealized holding loss on sale of assets and businesses:
Arising in period	0	0	(26)
Reclassification to net (loss) income	0	0	26
Other comprehensive income (loss)	50	(244)	217
Comprehensive (loss) income	(1,733)	(4,388)	2,621
Comprehensive income attributable to noncontrolling interest	(4)	(1)	(4)
Comprehensive (loss) income attributable to Bausch Health Companies Inc.	$ (1,737)	$ (4,389)	$ 2,617