CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Statement of Comprehensive Income [Abstract]
Net earnings/(loss)	$ 2,462	$ (11,908)
Other comprehensive income/(loss), net of taxes and reclassifications to earnings:
Derivatives qualifying as cash flow hedges	(215)	191
Pension and postretirement benefits	1	13
Marketable debt securities	1	(2)
Foreign currency translation	28	(56)
Total other comprehensive income/(loss)	(185)	146
Comprehensive income/(loss)	2,277	(11,762)
Comprehensive income attributable to noncontrolling interest	6	3
Comprehensive income/(loss) attributable to BMS	$ 2,271	$ (11,765)