CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net loss	$ (611)	$ (212)	$ (937)
Pension and postretirement benefit plan adjustments:
Net actuarial gain (loss) arising during the year	2	(4)	24
Amortization of prior service credit	(3)	(3)	(4)
Amortization or settlement recognition of net loss	3	10	10
Income tax (expense) benefit	(1)	(3)	1
Foreign currency impact	(1)	1	(3)
Net pension and postretirement benefit plan adjustments	0	1	28
Foreign currency translation adjustment	170	(257)	(158)
Other comprehensive income (loss)	170	(256)	(130)
Comprehensive loss	(441)	(468)	(1,067)
Comprehensive loss (income) attributable to noncontrolling interest	24	(26)	(12)
Comprehensive loss attributable to Bausch Health Companies Inc.	$ (417)	$ (494)	$ (1,079)