EARNINGS PER SHARE (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share [Abstract]
Net Earnings Attributable to BMS common shareholders	$ 333	$ 536	$ 1,270	$ 1,145
Weighted-average common shares outstanding - basic	1,657	1,644	1,655	1,641
Contingently convertible debt common stock equivalents	1	1	1	1
Incremental shares attributable to share-based compensation plans	11	15	12	16
Weighted-average common shares outstanding - diluted	1,669	1,660	1,668	1,658
Earnings per share - basic	$ 0.20	$ 0.33	$ 0.77	$ 0.70
Earnings per share - diluted	$ 0.20	$ 0.32	$ 0.76	$ 0.69