EARNINGS/(LOSS) PER SHARE (Tables)

12 Months Ended

Dec. 31, 2021

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

	Year Ended December 31,
Amounts in Millions, Except Per Share Data	2021		2020		2019
Net Earnings/(Loss) Attributable to BMS Used for Basic and Diluted EPS Calculation	$	6,994	$	(9,015)	$	3,439
Weighted-Average Common Shares Outstanding - Basic	2,221		2,258		1,705
Incremental Shares Attributable to Share-Based Compensation Plans	24		—		7
Weighted-Average Common Shares Outstanding - Diluted	2,245		2,258		1,712
Earnings/(Loss) per Common Share
Basic	$	3.15	$	(3.99)	$	2.02
Diluted	3.12		(3.99)		2.01