EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Earnings Per Share [Abstract]
Net Earnings Attributable to BMS Used for Basic and Diluted EPS Calculation	$ 1,421	$ 1,055	$ 2,699	$ 3,076
Weighted-average common shares outstanding - basic (in shares)	2,133	2,227	2,140	2,232
Incremental shares attributable to share-based compensation plans (in shares)	16	25	17	26
Weighted-average common shares outstanding - diluted (in shares)	2,149	2,252	2,157	2,258
Earnings per common share attributable to BMS, basic (in usd per share)	$ 0.67	$ 0.47	$ 1.26	$ 1.38
Earnings per common share attributable to BMS, diluted (in usd per share)	$ 0.66	$ 0.47	$ 1.25	$ 1.36