EARNINGS PER SHARE (Tables)

3 Months Ended

Mar. 31, 2014

Earnings Per Share, Basic and Diluted [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

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

	Three Months Ended March 31,
	2014		2013
Amounts attributable to Quest Diagnostics’ stockholders:
Income from continuing operations	$	104	$	116
Income from discontinued operations, net of taxes	—		20
Net income attributable to Quest Diagnostics’ common stockholders	$	104	$	136
Income from continuing operations	$	104	$	116
Less: Earnings allocated to participating securities	1		1
Earnings available to Quest Diagnostics’ common stockholders – basic and diluted	$	103	$	115
Weighted average common shares outstanding – basic	144		158
Effect of dilutive securities:
Stock options and performance share units	1		1
Weighted average common shares outstanding – diluted	145		159
Earnings per share attributable to Quest Diagnostics’ common stockholders – basic:
Income from continuing operations	$	0.72	$	0.73
Income from discontinued operations	—		0.13
Net income	$	0.72	$	0.86
Earnings per share attributable to Quest Diagnostics’ common stockholders – diluted:
Income from continuing operations	$	0.71	$	0.72
Income from discontinued operations	—		0.13
Net income	$	0.71	$	0.85

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

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

	Three Months Ended March 31,
	2014	2013
Stock options and performance share units	6	2