Capital (Tables)

12 Months Ended

Dec. 31, 2015

Class of Stock [Line Items]

Assets Subject to Regulatory Capital Requirements

	Under Basel III 1				Under Basel I 1
	2015				2014
(Dollars in millions)	Amount		Ratio		Amount		Ratio
SunTrust Banks, Inc.
CET1		$16,421	9.96	%	N/A		N/A
Tier 1 common equity	N/A		N/A			$15,594	9.60	%
Tier 1 capital		$17,804	10.80	%	17,554		10.80
Total capital	20,668		12.54		20,338		12.51
Leverage			9.69				9.64
SunTrust Bank
CET1		$17,859	11.02	%	N/A		N/A
Tier 1 capital	17,908		11.05			$17,036	10.67	%
Total capital	20,101		12.40		19,619		12.29
Leverage			9.96				9.57

Preferred Stock

(Dollars in millions)	2015		2014		2013
Series A (1,725 shares outstanding)		$172		$172		$172
Series B(1,025 shares outstanding)	103		103		103
Series E (4,500 shares outstanding)	450		450		450
Series F (5,000 shares outstanding)	500		500		—
Total preferred stock		$1,225		$1,225		$725