Consolidated Statements of Income (USD $) In Millions, except Share data in Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Interest Income
Interest and fees on loans and leases	$ 5,163	$ 5,603	$ 5,980
Interest and dividends on securities	939	871	907
Interest on other earning assets	40us-gaap_OtherInterestAndDividendIncome	33us-gaap_OtherInterestAndDividendIncome	30us-gaap_OtherInterestAndDividendIncome
Total interest income	6,142	6,507	6,917
Interest Expense
Interest on deposits	239us-gaap_InterestExpenseDeposits	301us-gaap_InterestExpenseDeposits	429us-gaap_InterestExpenseDeposits
Interest on short-term borrowings	4	6	7
Interest on long-term debt	525us-gaap_InterestExpenseLongTermDebt	584us-gaap_InterestExpenseLongTermDebt	624us-gaap_InterestExpenseLongTermDebt
Total interest expense	768us-gaap_InterestExpense	891us-gaap_InterestExpense	1,060us-gaap_InterestExpense
Net Interest Income	5,374us-gaap_InterestIncomeExpenseNet	5,616us-gaap_InterestIncomeExpenseNet	5,857us-gaap_InterestIncomeExpenseNet
Provision for credit losses	251	592	1,057
Net Interest Income After Provision for Credit Losses	5,123	5,024	4,800
Noninterest Income
Insurance income	1,643us-gaap_InsuranceCommissionsAndFees	1,517us-gaap_InsuranceCommissionsAndFees	1,359us-gaap_InsuranceCommissionsAndFees
Service charges on deposits	600	584	566
Mortgage banking income	395	565	840
Investment banking and brokerage fees and commissions	387	383	365
Bankcard fees and merchant discounts	269us-gaap_FeesAndCommissionsCreditCards	256us-gaap_FeesAndCommissionsCreditCards	236us-gaap_FeesAndCommissionsCreditCards
Trust and investment advisory revenues	221	200	184
Checkcard fees	203us-gaap_FeesAndCommissionsDebitCards	199us-gaap_FeesAndCommissionsDebitCards	185us-gaap_FeesAndCommissionsDebitCards
Income from bank-owned life insurance	110us-gaap_BankOwnedLifeInsuranceIncome	113us-gaap_BankOwnedLifeInsuranceIncome	116us-gaap_BankOwnedLifeInsuranceIncome
FDIC loss share income, net	(343)bbt_FdicLossShareIncomeNet	(293)bbt_FdicLossShareIncomeNet	(318)bbt_FdicLossShareIncomeNet
Other income	302	362	299
Securities gains (losses), net
Gross realized gains	7	57	1
Gross realized losses	(4)	(6)	(4)
OTTI charges	(23)us-gaap_ImpairmentOfInvestments	0us-gaap_ImpairmentOfInvestments	(5)us-gaap_ImpairmentOfInvestments
Non-credit portion recognized in OCI	17	0	(4)
Total securities gains (losses), net	(3)	51	(12)
Total noninterest income	3,784us-gaap_NoninterestIncome	3,937us-gaap_NoninterestIncome	3,820us-gaap_NoninterestIncome
Noninterest Expense
Personnel expense	3,180us-gaap_LaborAndRelatedExpense	3,293us-gaap_LaborAndRelatedExpense	3,125us-gaap_LaborAndRelatedExpense
Occupancy and equipment expense	682us-gaap_OccupancyNet	692us-gaap_OccupancyNet	650us-gaap_OccupancyNet
Loan-related expense	342us-gaap_LoanProcessingFee	255us-gaap_LoanProcessingFee	283us-gaap_LoanProcessingFee
Software expense	174bbt_SoftwareExpense	158bbt_SoftwareExpense	138bbt_SoftwareExpense
Professional services	139us-gaap_ProfessionalFees	189us-gaap_ProfessionalFees	156us-gaap_ProfessionalFees
Outside IT Services	115bbt_OutsideItServices	89bbt_OutsideItServices	58bbt_OutsideItServices
Regulatory charges	106bbt_RegulatoryAssessments	143bbt_RegulatoryAssessments	159bbt_RegulatoryAssessments
Amortization of intangibles	91us-gaap_AmortizationOfIntangibleAssets	106us-gaap_AmortizationOfIntangibleAssets	110us-gaap_AmortizationOfIntangibleAssets
Foreclosed property expense	40us-gaap_ForeclosedRealEstateExpense	55us-gaap_ForeclosedRealEstateExpense	266us-gaap_ForeclosedRealEstateExpense
Merger-related and restructuring charges, net	46us-gaap_RestructuringCharges	46us-gaap_RestructuringCharges	68us-gaap_RestructuringCharges
Loss on early extinguishment of debt	122	0	2
Other expense	884us-gaap_OtherNoninterestExpense	811us-gaap_OtherNoninterestExpense	813us-gaap_OtherNoninterestExpense
Total noninterest expense	5,921us-gaap_NoninterestExpense	5,837us-gaap_NoninterestExpense	5,828us-gaap_NoninterestExpense
Earnings
Income before income taxes	2,986	3,124	2,792
Provision for income taxes	760us-gaap_IncomeTaxExpenseBenefit	1,395us-gaap_IncomeTaxExpenseBenefit	764us-gaap_IncomeTaxExpenseBenefit
Net Income	2,226us-gaap_ProfitLoss	1,729us-gaap_ProfitLoss	2,028us-gaap_ProfitLoss
Noncontrolling interests	75	50	49
Dividends on preferred stock	148	117	63
Net income available to common shareholders	$ 2,003	$ 1,562	$ 1,916
EPS
EPS basic	$ 2.79us-gaap_EarningsPerShareBasic	$ 2.22us-gaap_EarningsPerShareBasic	$ 2.74us-gaap_EarningsPerShareBasic
EPS diluted	$ 2.75us-gaap_EarningsPerShareDiluted	$ 2.19us-gaap_EarningsPerShareDiluted	$ 2.70us-gaap_EarningsPerShareDiluted
Cash dividends declared	$ 0.95	$ 0.92	$ 0.80
Weighted Average Shares Outstanding
Weighted average number of shares outstanding, basic	718,140	703,042	698,739
Weighted average number of shares outstanding, diluted	728,372	714,363	708,877

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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Earnings on or other increases in the value of the cash surrender value of bank owned life insurance policies.

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Aggregate dividends declared during the period for each share of common stock outstanding.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Income earned from credit card services including late, over limit, and annual fees. This item excludes interest income earned on credit card balances and transactions.

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Amount of income earned from debit card services, including interchange fees, annual fees and other fees.

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Includes amounts charged depositors for: (1) maintenance of their accounts (maintenance charges); (2) failure to maintain specified minimum balances on account; (3) exceeding the number of checks or transactions allowed to be processed in a given period; (4) checks drawn on no minimum balance deposit accounts; (5) withdrawals from nontransaction deposit accounts; (6) closing savings accounts before a specified minimum period of time has elapsed; (7) accounts which have remained inactive for extended periods of time or which have become dormant; (8) use of automated teller machines or remote service units; (9) checks drawn against insufficient funds that the bank assesses regardless of whether it decides to pay, return or hold the check; (10) issuing stop payment orders; (11) certifying checks; and (12) accumulating or disbursing funds deposited in IRAs or Keogh Plan accounts when not handled by the bank's trust department. This item does not include penalties assessed on the early withdrawal of time deposits.

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Income from services rendered by trust departments or by any consolidated subsidiaries acting in a fiduciary capacity, including fees earned for (1) acting as an agent for fiduciary placement and loans and (2) custody or investment advisory services when such fees are not separately billed to the customer. This item excludes commissions and fees received for the accumulation or disbursement of funds deposited to Individual Retirement or Keogh plan accounts when such are not handled by the reporting entity's trust department.

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Income from mortgage banking activities (fees and commissions) and servicing real estate mortgages, credit cards, and other financial assets held by others net of any related impairment of capitalized service costs. Also includes any premiums received in lieu of regular servicing fees on such loans only as earned over the life of the loans.

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Amount of expense recognized during the period for the foreclosure on real estate assets.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

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This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Income from agency and brokerage operations (includes sales of annuities and supplemental contracts); service charges, commissions, and fees from the sale of insurance and related services; and management fees from separate accounts, deferred annuities, and universal life products.

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Amount of operating dividend and interest income, including amortization and accretion of premiums and discounts, on securities.

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Period Type:	duration