Income Per Common Share (Tables)

9 Months Ended

Sep. 30, 2019

Earnings Per Share [Abstract]

Schedule of reconciliations of the numerators and denominators used in the computations of basic and diluted earnings per common share

Reconciliations of the numerators and denominators used in the computations of basic and diluted income per common share were as follows, in millions: 

	Three Months Ended September 30,					Nine Months Ended September 30,
	2019			2018		2019			2018
Numerator (basic and diluted):
Income from continuing operations	$	184		$	170	$	546		$	517
Less: Allocation to unvested restricted stock awards	1			1		4			5
Income from continuing operations attributable to common shareholders	183			169		542			512
(Loss) income from discontinued operations, net	(58		)	10		(64		)	23
Less: Allocation to unvested restricted stock awards	—			—		—			—
(Loss) income from discontinued operations attributable to common shareholders	(58		)	10		(64		)	23
Net income available to common shareholders	$	125		$	179	$	478		$	535
Denominator:
Basic common shares (based upon weighted average)	286			304		289			307
Add: Stock option dilution	1			2		1			2
Diluted common shares	287			306		290			309