EARNINGS/(LOSS) PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Earnings Per Share [Abstract]
Net earnings/(loss) attributable to BMS used for Basic and Diluted EPS Calculation	$ 1,166	$ (130)	$ 2,361	$ 1,056
Weighted-average common shares outstanding - basic	1,670	1,667	1,670	1,665
Contingently convertible debt common stock equivalents				1
Incremental shares attributable to share-based compensation plans	9		9	11
Weighted-average common shares outstanding - diluted	1,679	1,667	1,679	1,677
Earnings per share - basic	$ 0.70	$ (0.08)	$ 1.41	$ 0.63
Earnings per share - diluted	$ 0.69	$ (0.08)	$ 1.41	$ 0.63
Antidilutive securities excluded from computation of earnings per share, amount		10