CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (DEFICIT) - USD ($) $ in Millions	Total	Bausch Health Companies Inc. Shareholders’ Deficit	Common Shares	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Non- controlling Interest
Beginning Balance (in shares) at Dec. 31, 2020			355,400,000
Beginning 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)			3,800,000
Common shares issued under share-based compensation plans	21	21	$ 85	(64)
Share-based compensation	95	95		95
Employee withholding taxes related to share-based awards	(48)	(48)		(48)
Release of foreign currency translation losses upon disposal of assets held for sale	340	340				340
Noncontrolling interest distributions	(10)						(10)
Net income (loss)	(1,009)	(1,017)			(1,017)		8
Other comprehensive (loss) income	(129)	(130)				(130)	1
Ending Balance (in shares) at Sep. 30, 2021			359,200,000
Ending Balance at Sep. 30, 2021	(135)	(204)	$ 10,312	437	(9,030)	(1,923)	69
Beginning Balance (in shares) at Jun. 30, 2021			358,700,000
Beginning Balance at Jun. 30, 2021	(611)	(687)	$ 10,300	413	(9,218)	(2,182)	76
Increase (Decrease) in Shareholders' Equity
Common shares issued under share-based compensation plans (in shares)			500,000
Common shares issued under share-based compensation plans	6	6	$ 12	(6)
Share-based compensation	33	33		33
Employee withholding taxes related to share-based awards	(3)	(3)		(3)
Release of foreign currency translation losses upon disposal of assets held for sale	340	340				340
Noncontrolling interest distributions	(10)						(10)
Net income (loss)	191	188			188		3
Other comprehensive (loss) income	(81)	(81)				(81)
Ending Balance (in shares) at Sep. 30, 2021			359,200,000
Ending Balance at Sep. 30, 2021	$ (135)	(204)	$ 10,312	437	(9,030)	(1,923)	69
Beginning Balance (in shares) at Dec. 31, 2021	359,405,748		359,400,000
Beginning 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)			2,400,000
Common shares issued under share-based compensation plans	3	3	$ 70	(67)
Share-based compensation	91	91		91
Employee withholding taxes related to share-based awards	(30)	(30)		(30)
Noncontrolling interest distributions	(11)						(11)
Net income (loss)	198	185			185		13
Other comprehensive (loss) income	$ (459)	(478)				(478)	19
Ending Balance (in shares) at Sep. 30, 2022	361,781,292		361,800,000
Ending Balance at Sep. 30, 2022	$ 433	(525)	$ 10,387	129	(8,776)	(2,265)	958
Beginning Balance (in shares) at Jun. 30, 2022			361,600,000
Beginning Balance at Jun. 30, 2022	253	(693)	$ 10,380	104	(9,175)	(2,002)	946
Increase (Decrease) in Shareholders' Equity
Proceeds from B+L initial public offering, net of costs (Note 2)						137
Common shares issued under share-based compensation plans (in shares)			200,000
Common shares issued under share-based compensation plans	0	0	$ 7	(7)
Share-based compensation	33	33		33
Employee withholding taxes related to share-based awards	(1)	(1)		(1)
Noncontrolling interest distributions	(11)						(11)
Net income (loss)	403	399			399		4
Other comprehensive (loss) income	$ (244)	(263)				(263)	19
Ending Balance (in shares) at Sep. 30, 2022	361,781,292		361,800,000
Ending Balance at Sep. 30, 2022	$ 433	$ (525)	$ 10,387	$ 129	$ (8,776)	$ (2,265)	$ 958