Earnings per Common Share (Tables)

9 Months Ended

Sep. 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 September 30,				Nine months ended September 30,
	2016		2015		2016		2015
Numerator:
Net income	$	520	$	650	$	1,037	$	1,682
Less: Preferred stock dividends	29		29		87		87
Net income applicable to common shareholders (1)	$	491	$	621	$	950	$	1,595
Denominator:
Weighted average common shares outstanding	371.5		397.0		374.4		406.5
Effect of dilutive potential common shares:
Stock options	3.2		3.6		3.3		4.2
Restricted stock units (non-participating) and performance stock awards	1.2		1.5		1.2		1.7
Weighted average common and dilutive potential common shares outstanding	375.9		402.1		378.9		412.4
Earnings per common share - Basic	$	1.32	$	1.56	$	2.54	$	3.92
Earnings per common share - Diluted	$	1.31	$	1.54	$	2.51	$	3.87

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