v3.25.1
(Loss) Earnings per Share (Basic and Diluted Earnings Per Ordinary Share) (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Earnings Per Share [Abstract]    
Net (loss) earnings attributable to Viatris Inc. common shareholders $ (3,042.0) $ 113.9
Weighted average shares outstanding 1,192.4 1,195.2
Basic (loss) earnings per share attributable to Viatris Inc. shareholders $ (2.55) $ 0.10
Weighted average number diluted shares outstanding adjustment, stock-based awards and warrants 0.0 14.3
Total dilutive shares outstanding 1,192.4 1,209.5
Diluted earnings (loss) per ordinary share $ (2.55) $ 0.09