Net Income Per Share (Tables)

9 Months Ended

Sep. 30, 2014

Earnings Per Share [Abstract]

Reconciliation of earnings attributable to common stockholders, basic and diluted

The following table reconciles the Company's net income from continuing operations attributable to common stockholders to basic and diluted net income from continuing operations attributable to common stockholders for the three and nine months ended September 30, 2014 and 2013:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2014			2013			2014			2013
	(in millions)
Net income from continuing operations attributable to common stockholders	$	411		$	72		$	612		$	477
Participating basic earnings	(4		)	(1		)	(5		)	(6		)
Basic and diluted income from continuing operations attributable to common stockholders	$	407		$	71		$	607		$	471

Reconciliation Of Basic To Diluted Weighted Average Common Shares Outstanding

The following table is a reconciliation of basic weighted average common shares outstanding to diluted weighted average common shares outstanding for the three and nine months ended September 30, 2014 and 2013:

	Three Months Ended September 30,		Nine Months Ended September 30,
	2014	2013	2014	2013
	(in millions)
Weighted average common shares outstanding:
Basic	143	139	143	135
Dilution attributable to convertible senior notes	—	—	—	2
Diluted (a)	143	139	143	137

 ____________________

(a) The Company excluded 33,591 shares and 11,197 shares attributable to unvested performance units from the diluted income per share calculations for the three and nine months ended September 30, 2014, respectively, because they would have been anti-dilutive to the calculation. Options to purchase 34,842 shares of the Company's common stock were excluded from the diluted income per share calculations for the nine months ended September 30, 2013 because they would have been anti-dilutive to the calculation.