Earnings Per Share

6 Months Ended

Jun. 30, 2011

Earnings Per Share

Earnings Per Share

12. Earnings Per Share

The computations of the weighted average shares outstanding for the three and six months ended June 30, 2011 and 2010 are as follows:

		Three months ended June  30,				Six months ended June  30,
(in millions)	2011		2010		2011		2010
Weighted average shares outstanding:
Basic		88.6		89.2		88.8		89.2
Dilutive share-based awards (1)		0.5		0.8		0.5		—
Diluted		89.1		90.0		89.3		89.2

(1) The six months ended June 30, 2010 excludes 0.9 million potentially dilutive share-based awards as their effect would be anti-dilutive.

Stock options and warrants to purchase 2.2 million and 2.4 million shares of the Company's common stock at June 30, 2011 and 2010, respectively, had exercise prices that exceeded the average market price of the Company's common stock for the three months ended June 30, 2011 and 2010, respectively. As such, these share-based awards did not affect the computation of diluted earnings per share.