Earnings Per Common Share

Basic earnings per common share (EPS) is computed by dividing net income available to common stockholders by the weighted-average number of common shares outstanding during the period. The computation of diluted EPS is similar to the computation of basic EPS except that the denominator is increased to include the number of additional common shares that would have been outstanding if dilutive potential common shares had been issued. Dilutive potential common shares include the effect of outstanding stock options and unvested restricted stock awards and units. EPS under the basic and diluted computations is as follows:


	Three Months Ended
	March 31,
	2013		2012
Net income	$	206	$	195
Preferred stock dividends		8		—

Net income available to common stockholders	$	198	$	195

Weighted-average common shares outstanding — basic		1,279		1,272
Common stock equivalent shares related to stock incentive plans		3		1
Weighted-average common shares outstanding — diluted ⁽¹⁾		1,282		1,273

Basic EPS	$	.15	$	.15
Diluted EPS	$	.15	$	.15

⁽¹⁾	Antidilutive stock options and restricted stock awards excluded from the calculation of diluted EPS totaled 45 million and 60 million shares for the first quarters of 2013 and 2012, respectively.