Income Taxes	9 Months Ended
Sep. 30, 2011
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes. Our effective tax rate for the three months ended September 30, 2011 was 31.7%. For the corresponding period of 2010, we recorded an income tax benefit, resulting in an effective tax rate of 43.8%. The decrease in the effective tax rate for the three months ended September 30, 2011 compared to the effective tax benefit rate for the corresponding period of 2010 was primarily related to the fact that our U.S. operations, which are taxed at a higher rate than our foreign operations, incurred a pre-tax loss in the third quarter of 2010. Benefits related to the expiration of statutes of limitation with respect to uncertain tax positions also had an impact on the effective tax rate for the three months ended September 30, 2011. For the nine months ended September 30, 2011, our effective tax rate was 33.3%, compared to 29.2% for the corresponding period of 2010. The increase in the effective tax rate for the nine-month period ended September 30, 2011, when compared to the corresponding period of 2010, was primarily related to the increased profit of our U.S. operations which are taxed at a higher rate than our foreign operations (primarily our Irish operations).

Income Taxes

9 Months Ended

Sep. 30, 2011

Income Taxes. Our effective tax rate for the three months ended September 30, 2011 was 31.7%. For the corresponding period of 2010, we recorded an income tax benefit, resulting in an effective tax rate of 43.8%. The decrease in the effective tax rate for the three months ended September 30, 2011 compared to the effective tax benefit rate for the corresponding period of 2010 was primarily related to the fact that our U.S. operations, which are taxed at a higher rate than our foreign operations, incurred a pre-tax loss in the third quarter of 2010. Benefits related to the expiration of statutes of limitation with respect to uncertain tax positions also had an impact on the effective tax rate for the three months ended September 30, 2011. For the nine months ended September 30, 2011, our effective tax rate was 33.3%, compared to 29.2% for the corresponding period of 2010. The increase in the effective tax rate for the nine-month period ended September 30, 2011, when compared to the corresponding period of 2010, was primarily related to the increased profit of our U.S. operations which are taxed at a higher rate than our foreign operations (primarily our Irish operations).