Income Taxes	6 Months Ended
Income Taxes	May 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our income tax provision for the second quarter of fiscal years 2020 and 2019 reflects our estimate 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 in which they occur. The estimates are reevaluated each quarter based on our estimated tax expense for the full fiscal year. Our effective tax rate was 25% in the second fiscal quarter of 2020 compared to 34% in the second fiscal quarter of 2019. Our effective tax rate was 24% in the six month period ended May 31, 2020 compared to 32% in the same period of 2019.The primary reason for the decrease in effective rate is that during the preparation of our financial statements for the three months ended August 31, 2019, we identified an error in our income tax provisions for the first and second quarters of fiscal year 2019 related to the tax treatment of an intercompany sale of intellectual property that occurred in fiscal year 2018. As a result of the error, income tax expense was overstated by $1.1 million and $2.5 million during the first and second quarters of fiscal year 2019, respectively. We determined that the error was not material to the first and second quarters of fiscal year 2019 and corrected the error by recording an out of period $3.6 million tax benefit in our financial statements for the period ended August 31, 2019. If the error had not occurred, the effective tax rate in the second quarter of fiscal year 2019 would have been 14% and the effective tax rate in the six month period ended May 31, 2019 would have been 18%. Our Federal income tax returns have been examined or are closed by statute for all years prior to fiscal year 2016. Our state income tax returns have been examined or are closed by statute for all years prior to fiscal year 2013. Tax authorities for certain non-U.S. jurisdictions are also examining returns. With some exceptions, we are generally not subject to tax examinations in non-U.S. jurisdictions for years prior to fiscal year 2013.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.