Income Taxes	6 Months Ended
May 31, 2012
Income Taxes [Abstract]
Income Taxes	Income Taxes Our income tax provision for the second quarter of fiscal 2012 and 2011 reflects our estimates of the effective tax rates expected to be applicable for the full fiscal years, adjusted for any discrete events which are recorded in the period they occur. The estimates are reevaluated each quarter based on our estimated tax expense for the full fiscal year. The research and development credit was retroactively reinstated in December 2010. As a result, in the first quarter of fiscal 2011 we recorded a tax benefit of $2.0 million related to qualifying research and development activities for the period from January 2010 to November 2010. In fiscal 2012 there is a reduced expectation for research and development credits as the credit provisions in the tax code expired at the end of December 2011. The Internal Revenue Service is currently examining our U.S. Federal income tax returns for fiscal years 2009 and 2010. Our Federal income tax returns have been examined or are closed by statute for all years prior to fiscal 2008, and we are no longer subject to audit for those periods. State taxing authorities are currently examining our income tax returns for years through fiscal 2010. Our state income tax returns have been examined or are closed by statute for all years prior to fiscal 2008, and we are no longer subject to audit for those periods. Tax authorities for certain non-U.S. jurisdictions are also examining returns affecting unrecognized tax benefits, none of which are material to our condensed consolidated balance sheets, cash flows or statements of income. With some exceptions, we are generally no longer subject to tax examinations in non-U.S. jurisdictions for years prior to fiscal 2006. We believe that we have adequately provided for any reasonably foreseeable outcomes related to our tax audits and that any settlement will not have a material effect on our financial position or results of operations. However, there can be no assurances as to the possible outcomes.

Income Taxes

6 Months Ended

May 31, 2012

Our income tax provision for the second quarter of fiscal 2012 and 2011 reflects our estimates of the effective tax rates expected to be applicable for the full fiscal years, adjusted for any discrete events which are recorded in the period they occur. The estimates are reevaluated each quarter based on our estimated tax expense for the full fiscal year.

The research and development credit was retroactively reinstated in December 2010. As a result, in the first quarter of fiscal 2011 we recorded a tax benefit of $2.0 million related to qualifying research and development activities for the period from January 2010 to November 2010. In fiscal 2012 there is a reduced expectation for research and development credits as the credit provisions in the tax code expired at the end of December 2011.

The Internal Revenue Service is currently examining our U.S. Federal income tax returns for fiscal years 2009 and 2010. Our Federal income tax returns have been examined or are closed by statute for all years prior to fiscal 2008, and we are no longer subject to audit for those periods. State taxing authorities are currently examining our income tax returns for years through fiscal 2010. Our state income tax returns have been examined or are closed by statute for all years prior to fiscal 2008, and we are no longer subject to audit for those periods.

Tax authorities for certain non-U.S. jurisdictions are also examining returns affecting unrecognized tax benefits, none of which are material to our condensed consolidated balance sheets, cash flows or statements of income. With some exceptions, we are generally no longer subject to tax examinations in non-U.S. jurisdictions for years prior to fiscal 2006.

We believe that we have adequately provided for any reasonably foreseeable outcomes related to our tax audits and that any settlement will not have a material effect on our financial position or results of operations. However, there can be no assurances as to the possible outcomes.