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Benefit Plans (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]        
Weighted average expected long-term rate of return on plan assets 7.50%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets 7.75%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets 8.00%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets 8.00%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets
Defined contribution plan, employee contribution percentage, minimum   1.00%bbt_DefinedContributionPlanEmployeeContributionPercentageOfCashCompensationMinimum    
Defined contribution plan, employee contribution percentage, maximum   50.00%bbt_DefinedContributionPlanEmployeeContributionPercentageOfCashCompensationMaximum    
Defined contribution plan, employer matching contribution percentage of employee compensation, maximum   6.00%bbt_DefinedContributionPlanEmployerMatchingContributionPercentageOfEmployeeCompensationMaximum    
Defined contribution plan employer contribution amount   $ 103bbt_DefinedContributionPlanEmployerContributionAmount $ 102bbt_DefinedContributionPlanEmployerContributionAmount $ 97bbt_DefinedContributionPlanEmployerContributionAmount
Shares of BB&T stock held in pension plan   3.0bbt_SharesOfParentCompanyStockHeldInPensionPlan 3.7bbt_SharesOfParentCompanyStockHeldInPensionPlan  
Value of BB&T stock held in pension plan   117bbt_ValueOfParentCompanyStockHeldInPensionPlan 138bbt_ValueOfParentCompanyStockHeldInPensionPlan  
Accrued income excluded from plan assets   23us-gaap_AccruedInvestmentIncomeReceivable 26us-gaap_AccruedInvestmentIncomeReceivable  
Qualified [Member]        
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]        
Discretionary contributions made to the qualified pension plan $ 117us-gaap_PensionContributions
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= bbt_QualifiedMember
$ 143us-gaap_PensionContributions
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= bbt_QualifiedMember
   
U.S. Equity Securities [Member]        
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]        
Defined benefit plan target allocation percentage of assets, range minimum   30.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_EquitySecuritiesMember
   
Defined benefit plan target allocation percentage of assets, range maximum   40.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_EquitySecuritiesMember
   
U.S. Equity Securities [Member] | BB&T Common Stock [Member]        
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]        
Defined benefit plan target allocation percentage of assets, range maximum   10.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= bbt_BbtCommonStockMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_EquitySecuritiesMember
   
International Equity Securities [Member]        
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]        
Defined benefit plan target allocation percentage of assets, range minimum   10.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= bbt_InternationalEquitySecuritiesMember
   
Defined benefit plan target allocation percentage of assets, range maximum   18.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= bbt_InternationalEquitySecuritiesMember
   
Fixed Income Securities [Member]        
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]        
Defined benefit plan target allocation percentage of assets, range minimum   35.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_FixedIncomeSecuritiesMember
   
Defined benefit plan target allocation percentage of assets, range maximum   50.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_FixedIncomeSecuritiesMember
   
Alternative Investments [Member]        
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]        
Defined benefit plan target allocation percentage of assets, range minimum   0.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= bbt_AlternativeInvestmentsMember
   
Defined benefit plan target allocation percentage of assets, range maximum   12.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= bbt_AlternativeInvestmentsMember