EARNINGS PER COMMON SHARE (Tables)

12 Months Ended

Dec. 31, 2017

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 earnings per common share were as follows, in millions:

	2017		2016		2015
Numerator (basic and diluted):
Income from continuing operations	$	533	$	491	$	357
Less: Allocation to unvested restricted stock awards	5		6		5
Income from continuing operations attributable to common shareholders	528		485		352
Loss from discontinued operations, net	—		—		(2		)
Less: Allocation to unvested restricted stock awards	—		—		—
Loss from discontinued operations attributable to common shareholders	—		—		(2		)
Net income available to common shareholders	$	528	$	485	$	350
Denominator:
Basic common shares (based upon weighted average)	314		326		338
Add: Stock option dilution	4		4		3
Diluted common shares	318		330		341