CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues
Revenues	$ 2,027	$ 2,012
Expenses
Selling, general and administrative	606	633
Research and development	112	122
Amortization of intangible assets	357	436
Goodwill impairments	469	0
Asset impairments, including loss on assets held for sale	148	14
Restructuring, integration and separation costs	12	4
Other (income) expense, net	(30)	36
Total expenses	2,248	1,764
Operating (loss) income	(221)	248
Interest income	2	7
Interest expense	(368)	(396)
Loss on extinguishment of debt	(5)	(24)
Foreign exchange and other	1	(13)
Loss before (provision for) benefit from income taxes	(591)	(178)
(Provision for) benefit from income taxes	(16)	26
Net loss	(607)	(152)
Net income attributable to noncontrolling interest	(3)	0
Net loss attributable to Bausch Health Companies Inc.	$ (610)	$ (152)
Basic loss per share attributable to Bausch Health Companies Inc. (in usd per share)	$ (1.71)	$ (0.43)
Diluted loss per share attributable to Bausch Health Companies Inc. (in usd per share)	$ (1.71)	$ (0.43)
Basic weighted-average common shares (in shares)	356.8	353.4
Diluted weighted-average common shares (in shares)	356.8	353.4
Product sales
Revenues
Revenues	$ 2,003	$ 1,986
Expenses
Cost of goods sold (excluding amortization and impairments of intangible assets) and Cost of other revenues	564	505
Other revenues
Revenues
Revenues	24	26
Expenses
Cost of goods sold (excluding amortization and impairments of intangible assets) and Cost of other revenues	$ 10	$ 14