Income Taxes	3 Months Ended
Mar. 31, 2013
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The tax provision for interim periods is determined using the estimated annual effective consolidated tax rate, based on the current estimate of full-year earnings before taxes, adjusted for the impact of discrete quarterly items. For the three months ended March 31, 2013, our effective tax rate was 22.0%, compared with 26.1% for the same period in 2012. The decrease in the effective tax rate primarily reflects the impact of the discrete tax item discussed below. The American Taxpayers Relief Act of 2012, signed into law in January 2013, included a retroactive reinstatement of the research and development tax credit to January 1, 2012. As a result, and in accordance with U.S. GAAP, we recognized a $1.3 million discrete tax benefit in the first quarter of 2013. During the first quarter of 2012, we recorded a $0.3 million reduction of our deferred tax assets associated with the legal restructuring of the ownership of our Puerto Rico operations. Because we are a global organization, we and our subsidiaries file income tax returns in the U.S. federal jurisdiction and various state and foreign jurisdictions. During 2012, the statute of limitations for the 2008 U.S. federal tax year lapsed, leaving tax years 2009 through 2012 open to examination. For U.S. state and local jurisdictions, tax years 2007 through 2012 are open to examination. We are also subject to examination in various foreign jurisdictions for tax years 2005 through 2012. It is reasonably possible that, due to the expiration of statutes and the closing of tax audits, the liability for unrecognized tax benefits may be reduced by approximately $2.0 million during the next twelve months, which would favorably impact our effective tax rate. Accrued interest and penalties related to unrecognized tax benefits was $0.5 million at both March 31, 2013 and December 31, 2012.

Income Taxes

3 Months Ended

Mar. 31, 2013

The tax provision for interim periods is determined using the estimated annual effective consolidated tax rate, based on the current estimate of full-year earnings before taxes, adjusted for the impact of discrete quarterly items. For the three months ended March 31, 2013, our effective tax rate was 22.0%, compared with 26.1% for the same period in 2012. The decrease in the effective tax rate primarily reflects the impact of the discrete tax item discussed below.

The American Taxpayers Relief Act of 2012, signed into law in January 2013, included a retroactive reinstatement of the research and development tax credit to January 1, 2012. As a result, and in accordance with U.S. GAAP, we recognized a $1.3 million discrete tax benefit in the first quarter of 2013.

During the first quarter of 2012, we recorded a $0.3 million reduction of our deferred tax assets associated with the legal restructuring of the ownership of our Puerto Rico operations.

Because we are a global organization, we and our subsidiaries file income tax returns in the U.S. federal jurisdiction and various state and foreign jurisdictions. During 2012, the statute of limitations for the 2008 U.S. federal tax year lapsed, leaving tax years 2009 through 2012 open to examination. For U.S. state and local jurisdictions, tax years 2007 through 2012 are open to examination. We are also subject to examination in various foreign jurisdictions for tax years 2005 through 2012.

It is reasonably possible that, due to the expiration of statutes and the closing of tax audits, the liability for unrecognized tax benefits may be reduced by approximately $2.0 million during the next twelve months, which would favorably impact our effective tax rate. Accrued interest and penalties related to unrecognized tax benefits was $0.5 million at both March 31, 2013 and December 31, 2012.