Long-Term Debt (Schedule of Carrying Amount and Effective Rates on Long-Term Debt) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Debt Instruments [Line Items]
Long-term debt	$ 23,312	$ 21,493
BB&T Corporation fixed rate senior notes [Member]
Debt Instruments [Line Items]
Long-term debt	6,583	5,845
Effective interest rate at the end of the period	2.39%	2.60%
BB&T Corporation floating rate senior notes [Member]
Debt Instruments [Line Items]
Long-term debt	1,050	700
Effective interest rate at the end of the period	1.07%	1.13%
BB&T Corporation fixed rate subordinated notes [Member]
Debt Instruments [Line Items]
Long-term debt	2,170	2,166
Effective interest rate at the end of the period	2.30%	2.47%
Branch Bank fixed rate senior notes [Member]
Debt Instruments [Line Items]
Long-term debt	4,047	1,999
Effective interest rate at the end of the period	1.72%	1.71%
Branch Bank floating rate senior notes [Member]
Debt Instruments [Line Items]
Long-term debt	500	1,150
Effective interest rate at the end of the period	0.72%	0.69%
Branch Bank fixed rate subordinated notes [Member]
Debt Instruments [Line Items]
Long-term debt	1,234	386
Effective interest rate at the end of the period	2.86%	1.71%
Branch Bank floating rate subordinated notes [Member]
Debt Instruments [Line Items]
Long-term debt	612	612
Effective interest rate at the end of the period	3.27%	2.56%
FHLB advances to Branch Bank
Debt Instruments [Line Items]
Long-term debt	6,496	8,110
Effective interest rate at the end of the period	4.12%	3.96%
Weighted average maturity of FHLB advances	5.9
Other long-term debt
Debt Instruments [Line Items]
Long-term debt	119	101
Fair value hedge-related basis adjustments
Debt Instruments [Line Items]
Long-term debt	$ 501	$ 424