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

No authoritative reference available.

No definition available.

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

No authoritative reference available.

No definition available.

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

- Details

Name:	bbt_LoanServicingAbstract
Namespace Prefix:	bbt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Represents the total exposure to the Registrant from residential mortgage loans sold with recourse liability.

No definition available.

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

Difference between the sale price and the carrying value when a financial asset transferred in a securitization or asset-backing financing arrangement is accounted for as a sale.

No definition available.

Name:	bbt_RecognizedPretaxGainsOnMortgageLoansWithUnpaidPrincipalBalances
Namespace Prefix:	bbt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Represents the reserve recorded for expected losses related to indemnification, recourse and representations & warranties residential mortgage loans sold.

No definition available.

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

Represents total residential mortgage loans managed or securitized, excluding loans serviced for others with no other continuing involvement. This balance represents the sum of residential mortgage loans held for investment on the balance sheet plus mortgage loans sold with recourse, plus mortgage loans purchased that are covered by FDIC loss sharing agreements, plus residential mortgage loans held for sale, plus loans securitized and transferred to securities available for sale.

No definition available.

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

Reflects the unpaid principal balances of residential mortgage loans sold to third-party investors during the period.

No definition available.

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

Represents the carrying amount of residential mortgage loans sold with recourse.

No definition available.

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

Represents the weighted average servicing fee earned from servicing residential mortgage loans. The amount is presented as the percentage of fee income divided by the outstanding balances of the residential mortgage loans being serviced.

No definition available.

Name:	bbt_ResidentialMortgageLoansWeightedAverageServicingFeePercentage
Namespace Prefix:	bbt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

No authoritative reference available.

No definition available.

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

Represents the unpaid principal balance of total residential mortgage servicing portfolio. This includes the unpaid principal balances held for investment included on the balance sheet as well as the portion serviced for others representing the balances sold to third-party investors.

No definition available.

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

Represents the unpaid principal balance of residential mortgage loans serviced for others that were previously sold to third-party investors.

No definition available.

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

No authoritative reference available.

No definition available.

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

No authoritative reference available.

No definition available.

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

Represents the weighted average interest rate on the portfolio of residential mortgage loans serviced for others.

No definition available.

Name:	bbt_WeightedAverageInterestRate
Namespace Prefix:	bbt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Amount before allowance of consumer real estate loans. Includes, but not limited to, construction financing, residential mortgage loans, and home equity lines of credit. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph a, b

-Article 9

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(a)(2),(3),(b))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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

Amount classified as mortgage loans attributable to disposal group held for sale or disposed of. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(a)(3))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 948

-SubTopic 310

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6490309&loc=d3e48678-111004

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Permanent Investor

-URI http://asc.fasb.org/extlink&oid=6520390

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

Amount of revenue from servicing real estate mortgages, credit cards, and other financial assets held by others. Includes premiums received in lieu of regular servicing fees.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 13

-Article 9

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-04.13 (d))

-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882