| Document and Entity Information - shares | 6 Months Ended | |
| Jun. 30, 2022 | Aug. 04, 2022 | |
| Cover [Abstract] | ||
| Document Type | 10-Q/A | |
| Document Quarterly Report | true | |
| Document Period End Date | Jun. 30, 2022 | |
| Document Transition Report | false | |
| Entity File Number | 001-14956 | |
| Entity Registrant Name | Bausch Health Companies Inc. | |
| Entity Incorporation, State or Country Code | A1 | |
| Entity Address, Country | CA | |
| Entity Tax Identification Number | 98-0448205 | |
| Entity Address, Address Line One | 2150 St. Elzéar Blvd. West | |
| Entity Address, City or Town | Laval | |
| Entity Address, State or Province | QC | |
| Entity Address, Postal Zip Code | H7L 4A8 | |
| City Area Code | 514 | |
| Local Phone Number | 744-6792 | |
| Title of 12(b) Security | Common Shares, No Par Value | |
| Trading Symbol | BHC | |
| Security Exchange Name | NYSE | |
| Entity Current Reporting Status | Yes | |
| Entity Interactive Data Current | Yes | |
| Entity Filer Category | Large Accelerated Filer | |
| Smaller Reporting Company | false | |
| Emerging Growth Company | false | |
| Entity Shell Company | false | |
| Entity Common Stock, Shares Outstanding (in shares) | 361,728,490 | |
| Entity Central Index Key | 0000885590 | |
| Current Fiscal Year End Date | --12-31 | |
| Document Fiscal Year Focus | 2022 | |
| Document Fiscal Period Focus | Q2 | |
| Amendment Flag | false |
