Earnings per Common Share (Tables)

6 Months Ended

Jun. 30, 2019

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

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 per share data; shares in thousands) (a)	2019			2018		2019			2018
Net income from continuing operations attributable to common stockholders	$	584		$	348	$	959		$	600
(Loss) income from discontinued operations, net of tax	(2		)	1		(3		)	(1		)
Net income attributable to common stockholders	$	582		$	349	$	956		$	599
Basic weighted-average common shares outstanding (b)	398,100			430,628		401,098			433,405
Diluted weighted-average common shares outstanding (b)	399,916			432,554		402,921			435,727
Basic earnings per common share
Net income from continuing operations	$	1.47		$	0.81	$	2.39		$	1.38
Loss from discontinued operations, net of tax	—			—		(0.01		)	—
Net income	$	1.46		$	0.81	$	2.39		$	1.38
Diluted earnings per common share
Net income from continuing operations	$	1.46		$	0.80	$	2.38		$	1.38
Loss from discontinued operations, net of tax	—			—		(0.01		)	—
Net income	$	1.46		$	0.81	$	2.37		$	1.37

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

(b)

Includes shares related to share-based compensation that vested but were not yet issued.