v3.26.3
EARNINGS (LOSS) PER SHARE - Calculation of Income (Loss) Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Earnings Per Share [Abstract]        
Net income (loss) attributable to Bausch + Lomb Corporation $ 32 $ (28) $ (53) $ (302)
Basic weighted-average common shares outstanding (in shares) 357.6 354.2 356.6 353.6
Diluted effect of stock options and RSUs (in shares) 3.9 0.0 0.0 0.0
Diluted weighted-average common shares outstanding (in shares) 361.5 354.2 356.6 353.6
Basic income (loss) per share attributable to Bausch + Lomb Corporation (in usd per share) $ 0.09 $ (0.08) $ (0.15) $ (0.85)
Diluted income (loss) per share attributable to Bausch + Lomb Corporation (in usd per share) $ 0.09 $ (0.08) $ (0.15) $ (0.85)