CONVERTIBLE SENIOR NOTES	6 Months Ended
Jun. 30, 2011
CONVERTIBLE SENIOR NOTES	9. CONVERTIBLE SENIOR NOTES In 2010, Company issued $600.0 million in aggregate principal amount of its 4% convertible senior notes due 2015 (“Convertible Senior Notes”) for net proceeds following underwriting expenses of approximately $582.0 million. Interest on the Convertible Senior Notes is paid semi-annually at a rate of 4% per year and the Convertible Senior Notes will mature on February 15, 2015 unless earlier repurchased or converted. The Convertible Senior Notes are convertible into shares of Common Stock at an initial conversion rate and conversion rate at June 30, 2011 of 46.6070 and 58.0576 shares of Common Stock per $1,000 principal amount of Convertible Senior Notes, which is equivalent to an initial conversion price of approximately $21.4560 and $17.2243 per share of Common Stock, respectively, subject to adjustment in certain circumstances. The market value at June 30, 2011 and December 31, 2010 was $710.4 million and $699.2 million, respectively, based on closing price.

CONVERTIBLE SENIOR NOTES

6 Months Ended

Jun. 30, 2011

9. CONVERTIBLE SENIOR NOTES

In 2010, Company issued $600.0 million in aggregate principal amount of its 4% convertible senior notes due 2015 (“Convertible Senior Notes”) for net proceeds following underwriting expenses of approximately $582.0 million. Interest on the Convertible Senior Notes is paid semi-annually at a rate of 4% per year and the Convertible Senior Notes will mature on February 15, 2015 unless earlier repurchased or converted. The Convertible Senior Notes are convertible into shares of Common Stock at an initial conversion rate and conversion rate at June 30, 2011 of 46.6070 and 58.0576 shares of Common Stock per $1,000 principal amount of Convertible Senior Notes, which is equivalent to an initial conversion price of approximately $21.4560 and $17.2243 per share of Common Stock, respectively, subject to adjustment in certain circumstances. The market value at June 30, 2011 and December 31, 2010 was $710.4 million and $699.2 million, respectively, based on closing price.