v3.26.1
EARNINGS/(LOSS) PER SHARE (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Earnings Per Share [Abstract]        
Net earnings/(loss) attributable to BMS $ 3,317 $ 1,310 $ 5,994 $ 3,766
Weighted-average common shares outstanding – basic (in shares) 2,042 2,035 2,040 2,033
Incremental shares attributable to share-based compensation plans (in shares) 6 3 8 6
Weighted-average common shares outstanding – diluted (in shares) 2,048 2,038 2,048 2,039
Earnings/(Loss) per common share        
Basic (usd per share) $ 1.62 $ 0.64 $ 2.94 $ 1.85
Diluted (usd per share) $ 1.62 $ 0.64 $ 2.93 $ 1.85
Antidilutive securities excluded from computation of earnings per share, amount (in shares) 0 0 0 0