CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues
Revenues	$ 2,111	$ 2,138	$ 6,238	$ 5,814
Expenses
Selling, general and administrative	653	572	1,944	1,731
Research and development	121	103	348	333
Amortization of intangible assets	338	391	1,055	1,263
Goodwill impairments	0	0	469	0
Asset impairments, including loss on assets held for sale	18	2	213	17
Restructuring, integration, separation and IPO costs	8	2	29	13
Other (income) expense, net	(183)	18	329	172
Total expenses	1,537	1,678	6,155	5,133
Operating income	574	460	83	681
Interest income	2	2	6	11
Interest expense	(351)	(374)	(1,083)	(1,155)
Loss on extinguishment of debt	(12)	0	(62)	(51)
Foreign exchange and other	3	(13)	11	(26)
Income (loss) before (provision for) benefit from income taxes	216	75	(1,045)	(540)
(Provision for) benefit from income taxes	(25)	(5)	36	133
Net income (loss)	191	70	(1,009)	(407)
Net (income) loss attributable to noncontrolling interest	(3)	1	(8)	0
Net income (loss) attributable to Bausch Health Companies Inc.	$ 188	$ 71	$ (1,017)	$ (407)
Earnings (loss) per share attributable to Bausch Health Companies Inc.
Basic (in usd per share)	$ 0.52	$ 0.20	$ (2.84)	$ (1.15)
Diluted (in usd per share)	$ 0.52	$ 0.20	$ (2.84)	$ (1.15)
Weighted-average common shares
Basic (in shares)	359.6	355.6	358.5	354.7
Diluted (in shares)	364.0	357.8	358.5	354.7
Product sales
Revenues
Revenues	$ 2,088	$ 2,111	$ 6,167	$ 5,734
Expenses
Cost of goods sold (excluding amortization and impairments of intangible assets) and Cost of other revenues	574	578	1,742	1,565
Other revenues
Revenues
Revenues	23	27	71	80
Expenses
Cost of goods sold (excluding amortization and impairments of intangible assets) and Cost of other revenues	$ 8	$ 12	$ 26	$ 39