CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues
Revenue	$ 8,601,000,000	$ 8,380,000,000	$ 8,724,000,000
Expenses
Selling, general and administrative	2,554,000,000	2,473,000,000	2,582,000,000
Research and development	471,000,000	413,000,000	361,000,000
Amortization of intangible assets	1,897,000,000	2,644,000,000	2,690,000,000
Goodwill impairments	0	2,322,000,000	312,000,000
Asset impairments	75,000,000	568,000,000	714,000,000
Restructuring and integration costs	31,000,000	22,000,000	52,000,000
Acquisition-related contingent consideration	12,000,000	(9,000,000)	(289,000,000)
Other expense (income), net	1,414,000,000	(20,000,000)	(348,000,000)
Total expenses	8,804,000,000	10,764,000,000	8,622,000,000
Operating (loss) income	(203,000,000)	(2,384,000,000)	102,000,000
Interest income	12,000,000	11,000,000	12,000,000
Interest expense	(1,612,000,000)	(1,685,000,000)	(1,840,000,000)
Loss on extinguishment of debt	(42,000,000)	(119,000,000)	(122,000,000)
Foreign exchange and other	8,000,000	23,000,000	107,000,000
Loss before benefit from income taxes	(1,837,000,000)	(4,154,000,000)	(1,741,000,000)
Benefit from income taxes	54,000,000	10,000,000	4,145,000,000
Net (loss) income	(1,783,000,000)	(4,144,000,000)	2,404,000,000
Net income attributable to noncontrolling interest	(5,000,000)	(4,000,000)	0
Net (loss) income attributable to Bausch Health Companies Inc.	$ (1,788,000,000)	$ (4,148,000,000)	$ 2,404,000,000
(Loss) earnings per share attributable to Bausch Health Companies Inc.
Basic (in dollars per share)	$ (5.08)	$ (11.81)	$ 6.86
Diluted (in dollars per share)	$ (5.08)	$ (11.81)	$ 6.83
Weighted-average common shares
Basic (in shares)	352.1	351.3	350.2
Diluted (in shares)	352.1	351.3	351.8
Product sales
Revenues
Revenue	$ 8,489,000,000	$ 8,271,000,000	$ 8,595,000,000
Expenses
Cost of goods sold (excluding amortization and impairments of intangible assets) and Cost of other revenues	2,297,000,000	2,309,000,000	2,506,000,000
Other revenues
Revenues
Revenue	112,000,000	109,000,000	129,000,000
Expenses
Cost of goods sold (excluding amortization and impairments of intangible assets) and Cost of other revenues	$ 53,000,000	$ 42,000,000	$ 42,000,000