CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (DEFICIT) - USD ($) $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Bausch Health Companies Inc. Shareholders’ Equity (Deficit)	Bausch Health Companies Inc. Shareholders’ Equity (Deficit) Cumulative Effect, Period of Adoption, Adjustment	Common Shares	Additional Paid-In Capital	Accumulated Deficit	Accumulated Deficit Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Loss	Noncontrolling Interest
Beginning Balance (in shares) at Dec. 31, 2019					352,600,000
Beginning Balance at Dec. 31, 2019	$ 1,136	$ (1)	$ 1,063	$ (1)	$ 10,172	$ 429	$ (7,452)	$ (1)	$ (2,086)	$ 73
Increase (Decrease) in Shareholders' Equity
Common shares issued under share-based compensation plans (in shares)					2,800,000
Common shares issued under share-based compensation plans	5		5		$ 55	(50)
Share-based compensation	105		105			105
Employee withholding taxes related to share-based awards	(30)		(30)			(30)
Noncontrolling interest distributions	(6)									(6)
Net (loss) income	(559)		(560)				(560)			1
Other comprehensive income (loss)	(45)		(47)						(47)	2
Ending Balance (in shares) at Dec. 31, 2020					355,400,000
Ending Balance at Dec. 31, 2020	605		535		$ 10,227	454	(8,013)		(2,133)	70
Increase (Decrease) in Shareholders' Equity
Common shares issued under share-based compensation plans (in shares)					4,000,000.0
Common shares issued under share-based compensation plans	22		22		$ 90	(68)
Share-based compensation	128		128			128
Employee withholding taxes related to share-based awards	(52)		(52)			(52)
Release of foreign currency translation losses upon disposal of assets held for sale	340		340						340
Noncontrolling interest distributions	(10)									(10)
Net (loss) income	(937)		(948)				(948)			11
Other comprehensive income (loss)	$ (130)		(131)						(131)	1
Ending Balance (in shares) at Dec. 31, 2021	359,405,748				359,400,000
Ending Balance at Dec. 31, 2021	$ (34)		(106)		$ 10,317	462	(8,961)		(1,924)	72
Increase (Decrease) in Shareholders' Equity
Proceeds from B+L initial public offering, net of costs (Note 2)	675		(190)			(327)			137	865
Common shares issued under share-based compensation plans (in shares)					2,500,000
Common shares issued under share-based compensation plans	3		3		$ 74	(71)
Share-based compensation	126		126			126
Employee withholding taxes related to share-based awards	(31)		(31)			(31)
Noncontrolling interest distributions	(11)									(11)
Net (loss) income	(212)		(225)				(225)			13
Other comprehensive income (loss)	$ (256)		(269)						(269)	13
Ending Balance (in shares) at Dec. 31, 2022	361,898,846				361,900,000
Ending Balance at Dec. 31, 2022	$ 260		$ (692)		$ 10,391	$ 159	$ (9,186)		$ (2,056)	$ 952