Operating Segments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013		Dec. 31, 2013
Net interest income (expense)	$ 1,343		$ 1,415		$ 2,690		$ 2,837
Allocated provision for loan and lease losses	74		168		134		440
Noninterest income	933		1,046		1,844		2,047
Noninterest expense	1,551		1,496		2,954		2,910
Amortization of intangibles	23		27		46		54
Income before income taxes	651		797		1,446		1,534
Provision (benefit) for income taxes	173		221		390		702
Segment net income (loss)	478		576		1,056		832
Identifiable assets (period end)	188,012				188,012				183,010
Community Banking [Member]
Net interest income (expense)	430		427		854		849
Net intersegment interest income (expense)	299		339		598		692
Segment net interest income	729		766		1,452		1,541
Allocated provision for loan and lease losses	35		108		51		225
Noninterest income	316		310		611		597
Intersegment net referral fees (expense)	29		51		55		105
Noninterest expense	397		445		791		870
Amortization of intangibles	8		9		16		19
Allocated corporate expenses	284		260		568		520
Income before income taxes	350		305		692		609
Provision (benefit) for income taxes	128		111		253		222
Segment net income (loss)	222		194		439		387
Identifiable assets (period end)	54,707		55,789		54,707		55,789
Residential Mortgage Banking [Member]
Net interest income (expense)	375		398		753		799
Net intersegment interest income (expense)	(250)		(248)		(501)		(502)
Segment net interest income	125		150		252		297
Allocated provision for loan and lease losses	(1)		30		(21)		23
Noninterest income	68		151		128		312
Intersegment net referral fees (expense)	0		0		1		0
Noninterest expense	206		98		292		176
Amortization of intangibles	0		0		0		0
Allocated corporate expenses	21		17		42		33
Income before income taxes	(33)		156		68		377
Provision (benefit) for income taxes	(12)		59		26		143
Segment net income (loss)	(21)		97		42		234
Identifiable assets (period end)	36,448		36,912		36,448		36,912
Dealer Financial Services [Member]
Net interest income (expense)	207		210		409		415
Net intersegment interest income (expense)	(39)		(39)		(77)		(79)
Segment net interest income	168		171		332		336
Allocated provision for loan and lease losses	31		41		104		109
Noninterest income	0		1		1		3
Intersegment net referral fees (expense)	0		0		0		0
Noninterest expense	28		27		57		54
Amortization of intangibles	0		0		0		0
Allocated corporate expenses	7		8		14		15
Income before income taxes	102		96		158		161
Provision (benefit) for income taxes	39		37		60		62
Segment net income (loss)	63		59		98		99
Identifiable assets (period end)	12,513		11,188		12,513		11,188
Specialized Lending [Member]
Net interest income (expense)	143		178		281		352
Net intersegment interest income (expense)	(34)		(30)		(68)		(62)
Segment net interest income	109		148		213		290
Allocated provision for loan and lease losses	13		28		22		79
Noninterest income	51		54		100		106
Intersegment net referral fees (expense)	0		0		0		0
Noninterest expense	52		64		103		128
Amortization of intangibles	1		2		2		3
Allocated corporate expenses	15		16		29		32
Income before income taxes	79		92		157		154
Provision (benefit) for income taxes	19		24		38		36
Segment net income (loss)	60		68		119		118
Identifiable assets (period end)	17,666		17,439		17,666		17,439
Insurance Services [Member]
Net interest income (expense)	1		0		1		1
Net intersegment interest income (expense)	2		2		3		3
Segment net interest income	3		2		4		4
Allocated provision for loan and lease losses	0		0		0		0
Noninterest income	424		427		855		793
Intersegment net referral fees (expense)	0		0		0		0
Noninterest expense	309		292		612		580
Amortization of intangibles	14		15		27		30
Allocated corporate expenses	17		14		34		29
Income before income taxes	87		108		186		158
Provision (benefit) for income taxes	29		37		53		52
Segment net income (loss)	58		71		133		106
Identifiable assets (period end)	3,015		3,164		3,015		3,164
Financial Services [Member]
Net interest income (expense)	42		40		82		75
Net intersegment interest income (expense)	68		75		134		155
Segment net interest income	110		115		216		230
Allocated provision for loan and lease losses	3		13		3		22
Noninterest income	189		184		366		360
Intersegment net referral fees (expense)	7		10		13		18
Noninterest expense	164		156		313		308
Amortization of intangibles	0		0		1		1
Allocated corporate expenses	30		26		60		50
Income before income taxes	109		114		218		227
Provision (benefit) for income taxes	41		43		82		85
Segment net income (loss)	68		71		136		142
Identifiable assets (period end)	11,972		10,024		11,972		10,024
Other Treasury And Corporate [Member]
Net interest income (expense)	145	[1]	162	[1]	310	[1]	346	[1]
Net intersegment interest income (expense)	(46)	[1]	(99)	[1]	(89)	[1]	(207)	[1]
Segment net interest income	99	[1]	63	[1]	221	[1]	139	[1]
Allocated provision for loan and lease losses	(7)	[1]	(52)	[1]	(25)		(18)
Noninterest income	(115)	[1]	(81)	[1]	(217)	[1]	(124)	[1]
Intersegment net referral fees (expense)	(36)	[1]	(61)	[1]	(69)	[1]	(123)	[1]
Noninterest expense	372	[1]	387	[1]	740		740
Amortization of intangibles	0	[1]	1	[1]	0		1
Allocated corporate expenses	(374)	[1]	(341)	[1]	(747)		(679)
Income before income taxes	(43)	[1]	(74)	[1]	(33)	[1]	(152)	[1]
Provision (benefit) for income taxes	(71)	[1]	(90)	[1]	(122)	[1]	102	[1]
Segment net income (loss)	28	[1]	16	[1]	89	[1]	(254)	[1]
Identifiable assets (period end)	51,691	[1]	48,876	[1]	51,691	[1]	48,876	[1]
Total Bbt Corporation [Member]
Net interest income (expense)	1,343		1,415		2,690		2,837
Net intersegment interest income (expense)	0		0		0		0
Segment net interest income	1,343		1,415		2,690		2,837
Allocated provision for loan and lease losses	74		168		134		440
Noninterest income	933		1,046		1,844		2,047
Intersegment net referral fees (expense)	0		0		0		0
Noninterest expense	1,528		1,469		2,908		2,856
Amortization of intangibles	23		27		46		54
Allocated corporate expenses	0		0		0		0
Income before income taxes	651		797		1,446		1,534
Provision (benefit) for income taxes	173		221		390		702
Segment net income (loss)	478		576		1,056		832
Identifiable assets (period end)	$ 188,012		$ 183,392		$ 188,012		$ 183,392

[1] Includes financial data from subsidiaries below the quantitative and qualitative thresholds requiring disclosure.