Loans and ACL (Summary of TDRs) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Total performing TDRs	$ 1,050bbt_TotalPerformingRestructurings	$ 1,705bbt_TotalPerformingRestructurings
Nonperforming TDRs	126bbt_NonperformingTdrs	193bbt_NonperformingTdrs
Total TDRs	1,176	1,898
ALLL attributable to TDRs	159	283
PerformingTDRs [Member]
Commercial and industrial	64	77
CRE - income producing properties	27	50
CRE - construction and development	30	39
Direct retail lending	84	187
Sales finance	19	17
Revolving credit	41	48
Residential mortgage-nonguaranteed	261	785
Residential mortgage-government guaranteed	360	376
Other lending subsidiaries	$ 164	$ 126

Allowance for loan losses allocated to troubled debt restructurings.

No definition available.

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- Definition

Reflects the net carrying amount of direct retail loans held in portfolio, after deducting deferred income, but before deducting the allowance for losses on direct retail loans.

+ References

No definition available.

+ Details

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- Definition

Other commercial real estate loans consisting largely of office buildings, hotels, warehouses, apartments, rental houses and shopping centers.

+ References

No definition available.

+ Details

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- Definition

No authoritative reference available.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Amount of loans that have been restructured but do not accrue interest

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Reflects the net carrying amount of other lending subsidiaries loans held in portfolio, after deducting deferred income, but before deducting the allowance for losses on specialized lending loans.

+ References

No definition available.

+ Details

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- Definition

Recorded balance of nonguaranteed residential mortgage loans

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

No authoritative reference available.

+ References

No definition available.

+ Details

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Balance Type:	debit
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- Definition

Reflects the net carrying amount of sales finance loans held in portfolio, after deducting deferred income, but before deducting the allowance for losses on sales finance loans.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of loans that continue to accrue interest under the terms of restructurings

+ References

No definition available.

+ Details

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- Definition

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 40

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554

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- Definition

Amount before allowance of credit card loans issued to individuals. 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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

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-Publisher SEC

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-Subparagraph a, b

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-Name Regulation S-X (SX)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(a)(4),(b))

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

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- Definition

Amount before allowance of loans issued to commercial and industrial institutions. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes real estate loans and loans covered under loss sharing agreements.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5066-111524

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(a)(1))

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph a(1)

-Article 9

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