Regulatory Requirements and Other Restrictions Regulatory Requirements (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
BB&T Corporation
CET1 Capital:
Actual Capital, Ratio	10.20%	10.20%
Actual Capital, Amount	$ 18,405	$ 18,051
Capital Requirements, Minimum	8,157	7,975
Capital Requirements, Well-Capitalized	$ 11,782	$ 11,519
Tier 1 Capital:
Actual Capital, Ratio	11.80%	11.90%
Actual Capital, Amount	$ 21,456	$ 21,102
Capital Requirements, Minimum	10,876	10,633
Capital Requirements, Well-Capitalized	$ 14,501	$ 14,177
Total Capital:
Actual Capital, Ratio	13.80%	13.90%
Actual Capital, Amount	$ 24,963	$ 24,653
Capital Requirements, Minimum	14,501	14,177
Capital Requirements Well-Capitalized	$ 18,126	$ 17,722
Leverage Capital:
Actual Capital, Ratio	9.90%	9.90%
Actual Capital, Amount	$ 21,456	$ 21,102
Capital Requirements, Minimum	8,635	8,567
Capital Requirements Well-Capitalized	$ 10,794	$ 10,708
Branch Bank
CET1 Capital:
Actual Capital, Ratio	11.20%	11.30%
Actual Capital, Amount	$ 19,571	$ 19,480
Capital Requirements, Minimum	7,875	7,752
Capital Requirements, Well-Capitalized	$ 11,375	$ 11,197
Tier 1 Capital:
Actual Capital, Ratio	11.20%	11.30%
Actual Capital, Amount	$ 19,571	$ 19,480
Capital Requirements, Minimum	10,500	10,336
Capital Requirements, Well-Capitalized	$ 14,000	$ 13,781
Total Capital:
Actual Capital, Ratio	13.20%	13.30%
Actual Capital, Amount	$ 23,049	$ 22,915
Capital Requirements, Minimum	14,000	13,781
Capital Requirements Well-Capitalized	$ 17,500	$ 17,226
Leverage Capital:
Actual Capital, Ratio	9.30%	9.40%
Actual Capital, Amount	$ 19,571	$ 19,480
Capital Requirements, Minimum	8,378	8,315
Capital Requirements Well-Capitalized	$ 10,473	$ 10,394