EARNINGS PER SHARE

6 Months Ended

Jun. 30, 2017

Earnings Per Share, Basic and Diluted [Abstract]

EARNINGS (LOSS) PER SHARE

EARNINGS PER SHARE

The computation of basic and diluted earnings per common share was as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2017		2016		2017		2016
Amounts attributable to Quest Diagnostics’ common stockholders:
Net income attributable to Quest Diagnostics	$	193	$	195	$	357	$	298
Less: Earnings allocated to participating securities	—		1		1		1
Earnings available to Quest Diagnostics’ common stockholders – basic and diluted	$	193	$	194	$	356	$	297
Weighted average common shares outstanding – basic	137		140		137		141
Effect of dilutive securities:
Stock options and performance share units	3		2		3		2
Weighted average common shares outstanding – diluted	140		142		140		143
Earnings per share attributable to Quest Diagnostics’ common stockholders:
Basic	$	1.40	$	1.38	$	2.59	$	2.10
Diluted	$	1.37	$	1.37	$	2.53	$	2.08

The following securities were not included in the calculation of diluted earnings per share due to their antidilutive effect:

	Three Months Ended June 30,		Six Months Ended June 30,
	2017	2016	2017	2016
Stock options	2	—	1	2