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Loan Servicing (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Loan Servicing  
Potential Exposure Related To Losses Incurred By FHA On Defaulted Loans Minimum Value $ 25bbt_PotentialExposureRelatedtolossesincurredbyfhaondefaultedloansminimumvalue
Potential Exposure Related To Losses Incurred By FHA On Defaulted Loans Maximum Value 105bbt_PotentialExposureRelatedToLossesIncurredByFhaOnDefaultedLoansMaximumValue
Expense Recognized Related To Exposure To Losses Incurred By FHA On Defaulted Loans Reserve Amount 85bbt_ExpenseRecognizedRelatedToExposureRelatedToLossesIncurredByFhaOnDefaultedLoansReserveAmount
Adjustment To Indemnification Reserves For FHA Insured Mortgage Loans Sold $ 33bbt_AdjustmentToIndemnificationReservesForFhaInsuredMortgageLoansSold