Earnings Per Common Share (Tables)

6 Months Ended

Jun. 30, 2017

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 earnings per common share were as follows, in millions:



	Three Months Ended June 30,				Six Months Ended June 30,
	2017		2016		2017		2016
Numerator (basic and diluted):
Net income	$	158	$	150	$	298	$	259
Less: Allocation to unvested restricted stock awards	1		2		3		3
Net income available to common shareholders	$	157	$	148	$	295	$	256

Denominator:
Basic common shares (based upon weighted average)	315		328		316		329
Add: Stock option dilution	4		3		4		4
Diluted common shares	319		331		320		333