SUBSEQUENT EVENTS (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015
Subsequent Events [Abstract]
Asset acquisition payment	$ 800bmy_Assetacquisitionpayment
Contingent and Regulatory Milestone Payments	$ 450

This element represents the total contingent approval milestone payments and regulatory of potential payments to alliance partner

No definition available.

Name:	bmy_ContingentandRegulatoryMilestonePayments
Namespace Prefix:	bmy_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant