v3.26.1
LOSS PER SHARE - Calculation of Loss Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Earnings Per Share [Abstract]    
Net loss attributable to Bausch + Lomb Corporation $ (71) $ (212)
Basic weighted-average common shares outstanding (in shares) 355.2 352.8
Diluted effect of stock options and RSUs (in shares) 0.0 0.0
Diluted weighted-average common shares outstanding (in shares) 355.2 352.8
Basic loss per share attributable to Bausch + Lomb Corporation (in usd per share) $ (0.20) $ (0.60)
Diluted loss per share attributable to Bausch + Lomb Corporation (in usd per share) $ (0.20) $ (0.60)