Operating Segments (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net interest income (expense)	$ 5,616	$ 5,857	$ 5,507
Allocated provision for loan and lease losses	592	1,057	1,190
Noninterest income	3,937	3,820	3,113
Noninterest expense	5,837	5,828	5,802
Amortization of intangibles	106	110	99
Income (loss) before income taxes	3,124	2,792	1,628
Provision (benefit) for income taxes	1,395	764	296
Segment net income (loss)	1,729	2,028	1,332
Identifiable segment assets (period end)	183,010	184,499
Community Banking-After Realignment [Member]
Net interest income (expense)	1,712	1,669	1,555
Net intersegment interest income (expense)	1,341	1,565	1,844
Segment net interest income	3,053	3,234	3,399
Allocated provision for loan and lease losses	276	586	529
Noninterest income	1,202	1,135	1,031
Intersegment net referral fees (expense)	173	190	131
Noninterest expense	1,683	1,800	2,334
Amortization of intangibles	36	37	47
Allocated corporate expenses	1,035	1,022	897
Income (loss) before income taxes	1,398	1,114	754
Provision (benefit) for income taxes	513	406	270
Segment net income (loss)	885	708	484
Identifiable segment assets (period end)	54,602	54,731	52,368
Residential Mortgage Banking-After Realignment [Member]
Net interest income (expense)	1,585	1,564	1,406
Net intersegment interest income (expense)	(1,003)	(1,044)	(999)
Segment net interest income	582	520	407
Allocated provision for loan and lease losses	4	174	380
Noninterest income	484	755	351
Intersegment net referral fees (expense)	(1)	0	0
Noninterest expense	361	416	320
Amortization of intangibles	0	0	0
Allocated corporate expenses	73	59	52
Income (loss) before income taxes	627	626	6
Provision (benefit) for income taxes	237	238	2
Segment net income (loss)	390	388	4
Identifiable segment assets (period end)	36,207	37,593	32,413
Dealer Financial Services-After Realignment [Member]
Net interest income (expense)	834	844	852
Net intersegment interest income (expense)	(159)	(196)	(270)
Segment net interest income	675	648	582
Allocated provision for loan and lease losses	214	164	125
Noninterest income	4	7	7
Intersegment net referral fees (expense)	0	0	0
Noninterest expense	108	101	90
Amortization of intangibles	0	1	1
Allocated corporate expenses	29	36	37
Income (loss) before income taxes	328	353	336
Provision (benefit) for income taxes	125	135	127
Segment net income (loss)	203	218	209
Identifiable segment assets (period end)	11,526	10,264	9,874
Specialized Lending-After Realignment [Member]
Net interest income (expense)	678	701	636
Net intersegment interest income (expense)	(126)	(139)	(171)
Segment net interest income	552	562	465
Allocated provision for loan and lease losses	85	135	72
Noninterest income	231	229	211
Intersegment net referral fees (expense)	0	0	0
Noninterest expense	255	259	233
Amortization of intangibles	5	5	6
Allocated corporate expenses	66	79	72
Income (loss) before income taxes	372	313	293
Provision (benefit) for income taxes	97	69	58
Segment net income (loss)	275	244	235
Identifiable segment assets (period end)	17,629	18,907	16,773
Insurance Services-After Realignment [Member]
Net interest income (expense)	3	3	2
Net intersegment interest income (expense)	6	4	5
Segment net interest income	9	7	7
Allocated provision for loan and lease losses	0	0	0
Noninterest income	1,535	1,365	1,041
Intersegment net referral fees (expense)	0	0	0
Noninterest expense	1,135	1,016	786
Amortization of intangibles	61	61	42
Allocated corporate expenses	96	82	72
Income (loss) before income taxes	252	213	148
Provision (benefit) for income taxes	85	70	46
Segment net income (loss)	167	143	102
Identifiable segment assets (period end)	2,990	3,297	2,350
Financial Services-After Realignment [Member]
Net interest income (expense)	129	106	98
Net intersegment interest income (expense)	310	337	257
Segment net interest income	439	443	355
Allocated provision for loan and lease losses	17	11	(2)
Noninterest income	743	719	683
Intersegment net referral fees (expense)	36	39	30
Noninterest expense	617	643	575
Amortization of intangibles	3	3	3
Allocated corporate expenses	99	93	74
Income (loss) before income taxes	482	451	418
Provision (benefit) for income taxes	181	169	155
Segment net income (loss)	301	282	263
Identifiable segment assets (period end)	9,876	8,845	7,243
Other, Treasury and Corporate-After Realignment [Member]
Net interest income (expense)	675	970	958
Net intersegment interest income (expense)	(369)	(527)	(666)
Segment net interest income	306	443	292
Allocated provision for loan and lease losses	(4)	(13)	86
Noninterest income	(262)	(390)	(211)
Intersegment net referral fees (expense)	(208)	(229)	(161)
Noninterest expense	1,572	1,483	1,365
Amortization of intangibles	1	3	0
Allocated corporate expenses	(1,398)	(1,371)	(1,204)
Income (loss) before income taxes	(335)	(278)	(327)
Provision (benefit) for income taxes	157	(323)	(362)
Segment net income (loss)	(492)	45	35
Identifiable segment assets (period end)	50,180	50,862	53,990
Community Banking [Member]
Net interest income (expense)	2,129	2,084	1,937
Net intersegment interest income (expense)	1,085	1,293	1,579
Segment net interest income	3,214	3,377	3,516
Allocated provision for loan and lease losses	246	665	589
Noninterest income	1,202	1,136	1,031
Intersegment net referral fees (expense)	160	178	121
Noninterest expense	1,701	1,827	2,356
Amortization of intangibles	36	37	47
Allocated corporate expenses	1,040	1,026	901
Income (loss) before income taxes	1,553	1,136	775
Provision (benefit) for income taxes	571	414	278
Segment net income (loss)	982	722	497
Identifiable segment assets (period end)	63,145	62,821	59,167
Residential Mortgage Banking [Member]
Net interest income (expense)	1,168	1,149	1,024
Net intersegment interest income (expense)	(747)	(772)	(734)
Segment net interest income	421	377	290
Allocated provision for loan and lease losses	34	95	320
Noninterest income	484	754	351
Intersegment net referral fees (expense)	(1)	0	0
Noninterest expense	344	389	297
Amortization of intangibles	0	0	0
Allocated corporate expenses	68	55	48
Income (loss) before income taxes	458	592	(24)
Provision (benefit) for income taxes	174	225	(9)
Segment net income (loss)	284	367	(15)
Identifiable segment assets (period end)	27,664	29,503	25,614
Dealer Financial Services [Member]
Net interest income (expense)	834	844	852
Net intersegment interest income (expense)	(159)	(196)	(270)
Segment net interest income	675	648	582
Allocated provision for loan and lease losses	214	164	125
Noninterest income	4	7	7
Intersegment net referral fees (expense)	0	0	0
Noninterest expense	108	101	90
Amortization of intangibles	0	1	1
Allocated corporate expenses	29	36	37
Income (loss) before income taxes	328	353	336
Provision (benefit) for income taxes	125	135	127
Segment net income (loss)	203	218	209
Identifiable segment assets (period end)	11,526	10,264	9,874
Specialized Lending [Member]
Net interest income (expense)	678	701	636
Net intersegment interest income (expense)	(126)	(139)	(171)
Segment net interest income	552	562	465
Allocated provision for loan and lease losses	85	135	72
Noninterest income	231	229	211
Intersegment net referral fees (expense)	0	0	0
Noninterest expense	255	259	233
Amortization of intangibles	5	5	6
Allocated corporate expenses	66	79	72
Income (loss) before income taxes	372	313	293
Provision (benefit) for income taxes	97	69	58
Segment net income (loss)	275	244	235
Identifiable segment assets (period end)	17,629	18,907	16,773
Insurance Services [Member]
Net interest income (expense)	3	3	2
Net intersegment interest income (expense)	6	4	5
Segment net interest income	9	7	7
Allocated provision for loan and lease losses	0	0	0
Noninterest income	1,535	1,365	1,041
Intersegment net referral fees (expense)	0	0	0
Noninterest expense	1,135	1,016	786
Amortization of intangibles	61	61	42
Allocated corporate expenses	96	82	72
Income (loss) before income taxes	252	213	148
Provision (benefit) for income taxes	85	70	46
Segment net income (loss)	167	143	102
Identifiable segment assets (period end)	2,990	3,297	2,350
Financial Services [Member]
Net interest income (expense)	150	123	108
Net intersegment interest income (expense)	297	326	250
Segment net interest income	447	449	358
Allocated provision for loan and lease losses	19	13	(1)
Noninterest income	743	719	683
Intersegment net referral fees (expense)	36	39	30
Noninterest expense	617	643	575
Amortization of intangibles	3	3	3
Allocated corporate expenses	99	93	74
Income (loss) before income taxes	488	455	420
Provision (benefit) for income taxes	183	171	156
Segment net income (loss)	305	284	264
Identifiable segment assets (period end)	10,434	9,283	7,497
Other Treasury And Corporate [Member]
Net interest income (expense)	654	953	948
Net intersegment interest income (expense)	(356)	(516)	(659)
Segment net interest income	298	437	289
Allocated provision for loan and lease losses	(6)	(15)	85
Noninterest income	(262)	(390)	(211)
Intersegment net referral fees (expense)	(195)	(217)	(151)
Noninterest expense	1,571	1,483	1,366
Amortization of intangibles	1	3	0
Allocated corporate expenses	(1,398)	(1,371)	(1,204)
Income (loss) before income taxes	(327)	(270)	(320)
Provision (benefit) for income taxes	160	(320)	(360)
Segment net income (loss)	(487)	50	40
Identifiable segment assets (period end)	49,622	50,424	53,736
Total Bbt Corporation [Member]
Net interest income (expense)	5,616	5,857	5,507
Net intersegment interest income (expense)	0	0	0
Segment net interest income	5,616	5,857	5,507
Allocated provision for loan and lease losses	592	1,057	1,190
Noninterest income	3,937	3,820	3,113
Intersegment net referral fees (expense)	0	0	0
Noninterest expense	5,731	5,718	5,703
Amortization of intangibles	106	110	99
Allocated corporate expenses	0	0	0
Income (loss) before income taxes	3,124	2,792	1,628
Provision (benefit) for income taxes	1,395	764	296
Segment net income (loss)	1,729	2,028	1,332
Identifiable segment assets (period end)	$ 183,010	$ 184,499	$ 175,011