v3.26.1
EARNINGS/(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 earnings/(loss) attributable to BMS $ 2,677 $ 2,456
Weighted-average common shares outstanding – basic (in shares) 2,038 2,031
Incremental shares attributable to share-based compensation plans (in shares) 9 9
Weighted-average common shares outstanding – diluted (in shares) 2,047 2,040
Earnings/(Loss) per common share    
Basic (usd per share) $ 1.31 $ 1.21
Diluted (usd per share) $ 1.31 $ 1.20
Antidilutive securities excluded from computation of earnings per share, amount (in shares) 0 0