The following table presents the calculation of basic and diluted earnings per common share.



	Three months ended June 30,						Six months ended June 30,
($ in millions, except share data) (a)	2015			2014			2015			2014
Net income from continuing operations	$	169		$	283		$	348		$	481
Preferred stock dividends (b)	(1,251		)	(65		)	(1,318		)	(133		)
Net (loss) income from continuing operations attributable to common shareholders	(1,082		)	218			(970		)	348
Income from discontinued operations, net of tax	13			40			410			69
Net (loss) income attributable to common shareholders	$	(1,069	)	$	258		$	(560	)	$	417
Basic weighted-average common shares outstanding (c)	482,847,164			481,350,249			482,550,842			480,563,267
Diluted weighted-average common shares outstanding (c) (d)	482,847,164			482,342,629			482,550,842			481,055,084
Basic earnings per common share
Net (loss) income from continuing operations	$	(2.24	)	$	0.45		$	(2.01	)	$	0.73
Income from discontinued operations, net of tax	0.03			0.09			0.85			0.14
Net (loss) income	$	(2.22	)	$	0.54		$	(1.16	)	$	0.87
Diluted earnings per common share
Net (loss) income from continuing operations	$	(2.24	)	$	0.45		$	(2.01	)	$	0.73
Income from discontinued operations, net of tax	0.03			0.09			0.85			0.14
Net (loss) income	$	(2.22	)	$	0.54		$	(1.16	)	$	0.87


(a)	Figures in the table may not recalculate exactly due to rounding. Earnings per share is calculated based on unrounded numbers.

(b)

Preferred stock dividends for the three months and six months ended June 30, 2015, include $1,193 million recognized in connection with the partial redemption of the Series G Preferred Stock and the repurchase of the Series A Preferred Stock. These dividends represent an additional return to preferred shareholders calculated as the excess consideration paid over the carrying amount derecognized. Refer to Note 16 for additional preferred stock information.


(c)	Includes shares related to share-based compensation that have vested but have not been issued for the three months and six months ended June 30, 2015 and 2014, respectively.


(d)	Due to antidilutive effect of the net loss from continuing operations attributable to common shareholders for the three months and six months ended June 30, 2015, basic weighted-average common shares outstanding were used to calculate basic and diluted earnings per share.