Long-Term Debt - Schedule of Long Term Debt, Interest Rates and Maturity Dates (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Dec. 31, 2018
Debt Instruments [Line Items]
Long-term Debt, Carrying Amount	$ 24,729	$ 23,709
Other long-term debt
Debt Instruments [Line Items]
Long-term Debt, Carrying Amount	$ 145	132
BB&T Corporation \| Senior notes \| Fixed rate
Debt Instruments [Line Items]
Maturity Date Range, Start	Jan. 01, 2019
Maturity Date Range, End	Dec. 31, 2025
Effective Rate	3.28%
Long-term Debt, Carrying Amount	$ 11,147	10,408
BB&T Corporation \| Senior notes \| Fixed rate \| Min
Debt Instruments [Line Items]
Stated Rate	2.05%
BB&T Corporation \| Senior notes \| Fixed rate \| Max
Debt Instruments [Line Items]
Stated Rate	6.85%
BB&T Corporation \| Senior notes \| Floating rate
Debt Instruments [Line Items]
Maturity Date Range, Start	Jan. 01, 2020
Maturity Date Range, End	Dec. 31, 2022
Effective Rate	3.26%
Long-term Debt, Carrying Amount	$ 1,948	2,398
BB&T Corporation \| Senior notes \| Floating rate \| Min
Debt Instruments [Line Items]
Stated Rate	2.95%
BB&T Corporation \| Senior notes \| Floating rate \| Max
Debt Instruments [Line Items]
Stated Rate	3.50%
BB&T Corporation \| Subordinated notes \| Fixed rate
Debt Instruments [Line Items]
Maturity Date Range, Start	Jan. 01, 2019
Maturity Date Range, End	Dec. 31, 2029
Effective Rate	2.90%
Long-term Debt, Carrying Amount	$ 1,562	903
BB&T Corporation \| Subordinated notes \| Fixed rate \| Min
Debt Instruments [Line Items]
Stated Rate	3.88%
BB&T Corporation \| Subordinated notes \| Fixed rate \| Max
Debt Instruments [Line Items]
Stated Rate	5.25%
Branch Bank \| Senior notes \| Fixed rate
Debt Instruments [Line Items]
Maturity Date Range, Start	Jan. 01, 2019
Maturity Date Range, End	Dec. 31, 2022
Effective Rate	3.02%
Long-term Debt, Carrying Amount	$ 4,918	4,895
Branch Bank \| Senior notes \| Fixed rate \| Min
Debt Instruments [Line Items]
Stated Rate	1.45%
Branch Bank \| Senior notes \| Fixed rate \| Max
Debt Instruments [Line Items]
Stated Rate	2.85%
Branch Bank \| Senior notes \| Floating rate
Debt Instruments [Line Items]
Maturity Date Range, Start	Jan. 01, 2019
Maturity Date Range, End	Dec. 31, 2020
Effective Rate	3.22%
Long-term Debt, Carrying Amount	$ 1,149	1,149
Branch Bank \| Senior notes \| Floating rate \| Min
Debt Instruments [Line Items]
Stated Rate	2.85%
Branch Bank \| Senior notes \| Floating rate \| Max
Debt Instruments [Line Items]
Stated Rate	3.27%
Branch Bank \| Subordinated notes \| Fixed rate
Debt Instruments [Line Items]
Maturity Date Range, Start	Jan. 01, 2025
Maturity Date Range, End	Dec. 31, 2026
Effective Rate	3.61%
Long-term Debt, Carrying Amount	$ 2,114	2,075
Branch Bank \| Subordinated notes \| Fixed rate \| Min
Debt Instruments [Line Items]
Stated Rate	3.63%
Branch Bank \| Subordinated notes \| Fixed rate \| Max
Debt Instruments [Line Items]
Stated Rate	3.80%
Branch Bank \| FHLB advances
Debt Instruments [Line Items]
Maturity Date Range, Start	Jan. 01, 2019
Maturity Date Range, End	Dec. 31, 2034
Effective Rate	2.98%
Long-term Debt, Carrying Amount	$ 1,746	$ 1,749
Weighted average maturity of FHLB advances	3 years 9 months 18 days
Branch Bank \| FHLB advances \| Min
Debt Instruments [Line Items]
Stated Rate	0.00%
Branch Bank \| FHLB advances \| Max
Debt Instruments [Line Items]
Stated Rate	5.50%

Line items represent the type of debt that has been swapped

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Weighted average maturity of FHLB advances

+ References

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

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-Name Accounting Standards Codification
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Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

Latest date the outstanding debt instruments are required to be repaid, in CCYY-MM-DD format.

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- Definition

Earliest date the outstanding debt instruments are required to be repaid, in CCYY-MM-DD format.

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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