| Document and Entity Information | Sep. 04, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Sep. 04, 2024 |
| Entity File Number | 001-39695 |
| Entity Registrant Name | Viatris Inc |
| Entity Central Index Key | 0001792044 |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 83-4364296 |
| Entity Address, Address Line One | 1000 Mylan Boulevard |
| Entity Address, City or Town | Canonsburg |
| Entity Address, State or Province | PA |
| Entity Address, Postal Zip Code | 15317 |
| City Area Code | 724 |
| Local Phone Number | 514-1800 |
| Title of 12(b) Security | Common stock, par value $0.01 per share |
| Trading Symbol | VTRS |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
