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Benefit Plans (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended 1 Months Ended 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Jan. 31, 2014
Qualified [Member]
Dec. 31, 2013
Qualified [Member]
Dec. 31, 2013
Equity Securities [Member]
Dec. 31, 2013
International Equity Securities [Member]
Dec. 31, 2013
Fixed Income Securities [Member]
Dec. 31, 2013
Alternative Investments [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]                    
Weighted average expected long-term rate of return on plan assets 7.75% 8.00% 8.00% 8.00%            
Discretionary contributions made to the qualified pension plan         $ 110 $ 345        
Defined benefit plan target allocation percentage of assets, range minimum             40.00% 10.00% 25.00%  
Defined benefit plan target allocation percentage of assets, range maximum             52.00% 20.00% 40.00% 12.00%
Defined contribution plan, employee contribution percentage, minimum           1.00%        
Defined contribution plan, employee contribution percentage, maximum           50.00%        
Defined contribution plan, employer matching contribution percentage of employee compensation, maximum           6.00%        
Defined contribution plan employer contribution amount   102 97 85            
Shares of BB&T stock held in pension plan   3.7 3.7              
Value of BB&T stock held in pension plan   138 107              
Accrued income   $ 26 $ 18