CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues
Revenues	$ 2,100	$ 1,664	$ 4,127	$ 3,676
Expenses
Selling, general and administrative	685	526	1,291	1,159
Research and development	115	108	227	230
Amortization of intangible assets	360	436	717	872
Goodwill impairments	0	0	469	0
Asset impairments, including loss on assets held for sale	47	1	195	15
Restructuring, integration and separation costs	9	7	21	11
Other expense, net	542	118	512	154
Total expenses	2,370	1,691	4,618	3,455
Operating (loss) income	(270)	(27)	(491)	221
Interest income	2	2	4	9
Interest expense	(364)	(385)	(732)	(781)
Loss on extinguishment of debt	(45)	(27)	(50)	(51)
Foreign exchange and other	7	0	8	(13)
Loss before benefit from income taxes	(670)	(437)	(1,261)	(615)
Benefit from income taxes	77	112	61	138
Net loss	(593)	(325)	(1,200)	(477)
Net income attributable to noncontrolling interest	(2)	(1)	(5)	(1)
Net loss attributable to Bausch Health Companies Inc.	$ (595)	$ (326)	$ (1,205)	$ (478)
Basic loss per share attributable to Bausch Health Companies Inc. (in usd per share)	$ (1.66)	$ (0.92)	$ (3.37)	$ (1.35)
Diluted loss per share attributable to Bausch Health Companies Inc. (in usd per share)	$ (1.66)	$ (0.92)	$ (3.37)	$ (1.35)
Basic weighted-average common shares (in shares)	359.1	355.3	358.0	354.3
Diluted weighted-average common shares (in shares)	359.1	355.3	358.0	354.3
Product sales
Revenues
Revenues	$ 2,076	$ 1,637	$ 4,079	$ 3,623
Expenses
Cost of goods sold (excluding amortization and impairments of intangible assets) and Cost of other revenues	604	482	1,168	987
Other revenues
Revenues
Revenues	24	27	48	53
Expenses
Cost of goods sold (excluding amortization and impairments of intangible assets) and Cost of other revenues	$ 8	$ 13	$ 18	$ 27