EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Earnings Per Share [Abstract]
Net Earnings Attributable to BMS Used for Basic and Diluted EPS Calculation	$ 1,606	$ 1,546	$ 4,305	$ 4,622
Weighted-Average Common Shares Outstanding - Basic (in shares)	2,133	2,219	2,137	2,227
Incremental Shares Attributable to Share-Based Compensation Plans (in shares)	15	24	17	26
Weighted-Average Common Shares Outstanding - Diluted (in shares)	2,148	2,243	2,154	2,253
Earnings per Common Share
Earnings per common share attributable to BMS, basic (in usd per share)	$ 0.75	$ 0.70	$ 2.01	$ 2.08
Earnings per common share attributable to BMS, diluted (in usd per share)	$ 0.75	$ 0.69	$ 2.00	$ 2.05