EARNINGS PER SHARE

6 Months Ended

Jun. 30, 2016

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,
	2016		2015		2016		2015
Amounts attributable to Quest Diagnostics’ stockholders:
Net income attributable to Quest Diagnostics	$	195	$	118	$	298	$	179
Less: Earnings allocated to participating securities	1		1		1		1
Earnings available to Quest Diagnostics’ common stockholders – basic and diluted	$	194	$	117	$	297	$	178
Weighted average common shares outstanding – basic	140		144		141		144
Effect of dilutive securities:
Stock options and performance share units	2		1		2		1
Weighted average common shares outstanding – diluted	142		145		143		145
Earnings per share attributable to Quest Diagnostics’ common stockholders:
Basic	$	1.38	$	0.82	$	2.10	$	1.24
Diluted	$	1.37	$	0.81	$	2.08	$	1.23

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,
	2016	2015	2016	2015
Stock options and performance share units	—	2	2	2