Name:	bbt_CommercialMortgageLoansSoldWithRecourseLiability
Namespace Prefix:	bbt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the total exposure to the Registrant from commercial real estate mortgage loans sold with recourse liability.

No definition available.

Name:	bbt_MaximumRecourseExposureOnCommercialMortgageLoansSold
Namespace Prefix:	bbt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Represents the dollar amount of commercial real estate mortgage loans originated during the period.

No definition available.

Name:	bbt_OriginationOfCommercialRealEstateMortgages
Namespace Prefix:	bbt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Represents the reserve recorded on the Registrant's books for expected losses related to commercial real estate mortgage loans sold with recourse.

No definition available.

Name:	bbt_ReserveForCommercialMortgageLoansSoldWithRecourse
Namespace Prefix:	bbt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Represents the total unpaid principal balance of commercial real estate mortgage loans serviced by the Registrant for others.

No definition available.

Name:	bbt_UnpaidPrincipalBalanceOfCommercialMortgageLoansServicedForOthers
Namespace Prefix:	bbt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

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

Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=68078379&loc=d3e122625-111746

Name:	us-gaap_ServicingAssetAtFairValueAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.