Earnings per Common Share (Tables)

6 Months Ended

Jun. 30, 2016

Earnings Per Share [Abstract]

Computation of basic and diluted earnings per common share

The computation of basic and diluted earnings per common share is presented in the following table.

($ in millions, except per share data)	Three months ended June 30,				Six months ended June 30,
	2016		2015		2016		2015
Numerator:
Net income	$	271	$	355	$	517	$	1,032
Less: Preferred stock dividends	29		29		58		58
Net income applicable to common shareholders (1)	$	242	$	326	$	459	$	974
Denominator:
Weighted average common shares outstanding	373.6		407.0		375.8		411.4
Effect of dilutive potential common shares:
Stock options	3.4		4.2		3.4		4.5
Restricted stock units (non-participating) and performance stock awards	1.1		1.4		1.3		1.7
Weighted average common and dilutive potential common shares outstanding	378.1		412.6		380.5		417.6
Earnings per common share - Basic	$	0.65	$	0.80	$	1.22	$	2.37
Earnings per common share - Diluted	$	0.64	$	0.79	$	1.21	$	2.33

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⁽¹⁾  Net income applicable to common shareholders is net income less preferred stock dividends.