Name:	bms_MultiemployerPlanPercentageOfNondeductibleExciseTaxImposedByIrsOnAccumulatedFundingDeficiency
Namespace Prefix:	bms_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the number of multiemployer defined benefit pensions plans under the terms contained in four collective bargaining agreements.

No definition available.

Name:	bms_NumberOfMultiemployerDefinedBenefitPensionsPlans
Namespace Prefix:	bms_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Number of Sites for Proceedings under Environmental Matters in Brazil

No definition available.

Name:	bms_NumberOfSitesForProceedingsUnderEnvironmentalMattersInBrazil
Namespace Prefix:	bms_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Represents the number of sites for state law proceedings under environmental matters.

No definition available.

Name:	bms_NumberOfSitesForStateLawProceedingsUnderEnvironmentalMatters
Namespace Prefix:	bms_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

TaxAssessmentForGoodwillAmortization

No definition available.

Name:	bms_TaxAssessmentForGoodwillAmortization
Namespace Prefix:	bms_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 9

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349