EARNINGS PER SHARE

12 Months Ended

Dec. 31, 2015

Earnings Per Share, Basic and Diluted [Abstract]

EARNINGS PER SHARE

EARNINGS PER SHARE

The computation of basic and diluted earnings per common share is as follows (in millions, except per share data):

	2015		2014		2013
Amounts attributable to Quest Diagnostics’ stockholders:
Income from continuing operations	$	709	$	551	$	814
Income from discontinued operations, net of taxes	—		5		35
Net income attributable to Quest Diagnostics’ common stockholders	$	709	$	556	$	849
Income from continuing operations	$	709	$	551	$	814
Less: Earnings allocated to participating securities	3		2		3
Earnings available to Quest Diagnostics’ common stockholders – basic and diluted	$	706	$	549	$	811
Weighted average common shares outstanding – basic	144		145		152
Effect of dilutive securities:
Stock options and performance share units	1		—		1
Weighted average common shares outstanding – diluted	145		145		153
Earnings per share attributable to Quest Diagnostics’ common stockholders – basic:
Income from continuing operations	$	4.92	$	3.80	$	5.35
Income from discontinued operations	—		0.03		0.23
Net income	$	4.92	$	3.83	$	5.58
Earnings per share attributable to Quest Diagnostics’ common stockholders – diluted:
Income from continuing operations	$	4.87	$	3.78	$	5.31
Income from discontinued operations	—		0.03		0.23
Net income	$	4.87	$	3.81	$	5.54

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

	2015	2014	2013
Stock options and performance share units	2	2	1