v3.25.2
EARNINGS/(LOSS) PER SHARE (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Earnings Per Share [Abstract]        
Net earnings/(loss) attributable to BMS $ 1,310 $ 1,680 $ 3,766 $ (10,231)
Weighted-average common shares outstanding – basic (in shares) 2,035,000,000 2,027,000,000 2,033,000,000 2,025,000,000
Incremental shares attributable to share-based compensation plans (in shares) 3,000,000 2,000,000 6,000,000 0
Weighted-average common shares outstanding – diluted (in shares) 2,038,000,000 2,029,000,000 2,039,000,000 2,025,000,000
Earnings/(Loss) per common share        
Basic (usd per share) $ 0.64 $ 0.83 $ 1.85 $ (5.05)
Diluted (usd per share) $ 0.64 $ 0.83 $ 1.85 $ (5.05)
Antidilutive securities excluded from computation of earnings per share, amount (in shares) 23,000,000 39,000,000 19,000,000 44,000,000