TREASURY STOCK

6 Months Ended

Jun. 30, 2011

TREASURY STOCK.

TREASURY STOCK

9. TREASURY STOCK

As of June 30, 2011, the Company has a remaining amount from all authorizations granted by the Board of Directors of $459.2 million to purchase its common stock.  The Company may make additional repurchases of shares under its stock repurchase programs, depending on prevailing market conditions, alternate uses of capital and other factors.  Whether and when to initiate and/or complete any purchase of common stock and the amount of common stock purchased will be determined in the Company’s complete discretion.

The Company’s Board of Directors has also given the Company the general authorization to repurchase shares of its common stock to satisfy employee withholding tax obligations related to stock-based compensation.  The Company repurchased 349,667 shares and 83,224 shares at aggregate costs of $158.7 million and $19.3 million in the six months ended June 30, 2011 and 2010, respectively, to satisfy employee withholding taxes related to stock-based compensation.

As of June 30, 2011, there were approximately 7.8 million shares of the Company’s common stock held in treasury.

In the first quarter of 2010, the Company’s Board of Directors authorized the repurchase of up to $500 million of the Company’s common stock, including the approval to purchase up to $100 million using proceeds from the issuance of the 2015 Notes.  The Company repurchased 0.4 million shares of its common stock at an aggregate cost of approximately $100 million in the three months that ended March 31, 2010.  During the three months ended June 30, 2010, the Company repurchased 32,487 shares of its common stock at an aggregate cost of approximately $6.1 million.