EARNINGS/(LOSS) PER SHARE (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share [Abstract]
Net Earnings/(Loss) Attributable to BMS Used for Basic and Diluted EPS Calculation	$ 6,327	$ 6,994	$ (9,015)
Weighted-average common shares outstanding - basic (in shares)	2,130,000,000	2,221,000,000	2,258,000,000
Incremental shares attributable to share-based compensation plans (in shares)	16,000,000	24,000,000	0
Weighted-average common shares outstanding - diluted (in shares)	2,146,000,000	2,245,000,000	2,258,000,000
Earnings/(Loss) per Common Share
Basic (in usd per share)	$ 2.97	$ 3.15	$ (3.99)
Diluted (in usd per share)	$ 2.95	$ 3.12	$ (3.99)
Antidilutive securities excluded from computation of earnings per share (in shares)	0	0	106,000,000