Financing Receivables - Additional Information (Detail) (CareFusion [Member], USD $) In Millions, unless otherwise specified	Mar. 31, 2015
CareFusion [Member]
Business Acquisition [Line Items]
Net investment in sales-type leases	$ 1,209

The acquired net amount due consisting of: (a) minimum lease payments due on direct financing and sales-type leases, (b) unguaranteed residual value, and (c) any unamortized initial direct costs on direct financing leases; less: (i) executory costs, (ii) unearned income, and (iii) the accumulated allowance for uncollectible minimum lease payments.

No definition available.

Name:	bdx_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetInvestmentInSalesTypeLeases
Namespace Prefix:	bdx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant