CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net Earnings/(Loss)	$ 6,345	$ 7,014	$ (8,995)
Other Comprehensive Income/(Loss), net of taxes and reclassifications to earnings:
Derivatives qualifying as cash flow hedges	54	415	(256)
Pension and postretirement benefits	145	206	(75)
Marketable debt securities	(2)	(9)	5
Foreign currency translation	(210)	(41)	7
Total Other Comprehensive Income/(Loss)	(13)	571	(319)
Comprehensive Income/(Loss)	6,332	7,585	(9,314)
Comprehensive Income Attributable to Noncontrolling Interest	18	20	20
Comprehensive Income/(Loss) Attributable to BMS	$ 6,314	$ 7,565	$ (9,334)