Income Taxes	3 Months Ended
Oct. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes On December 22, 2017, the U.S. Tax Cuts and Jobs Act (TCJA) was enacted into law. The TCJA significantly reforms the Internal Revenue Code of 1986, including but not limited to reducing the U.S. federal corporate income tax rate from 35 percent to 21 percent and moving toward a territorial tax system with a one-time transition tax imposed on previously unremitted foreign earnings and profits. Staff Accounting Bulletin 118 (SAB 118) includes additional guidance allowing companies to use a measurement period that should not extend beyond one year from the TCJA enactment date to account for the impacts of the law in their financial statements. There have been no material measurement period adjustments made during the three months ended October 31, 2018 related to the provisional amounts recorded and disclosed in the Company’s Annual Report on Form 10-K for the year ended July 31, 2018. During the three months ended October 31, 2018, the Company made the accounting policy election to treat taxes related to the Global Intangible Low-Taxed Income (GILTI) provision of the TCJA as a current period expense when incurred. Although the Company believes it has made reasonable estimates in accounting for the impacts of the TCJA, these tax charges and benefits are provisional, as the Company is still analyzing certain aspects of the legislation and refining calculations as information becomes available during the measurement period as allowed by SAB 118. The accounting for the income tax effects of the TCJA is expected to be completed during the second quarter of fiscal 2019 and any future adjustments will be recognized as discrete income tax expense or benefit in the period the adjustments are determined. As of October 31, 2018, the gross unrecognized tax benefits were $19.4 million and accrued interest and penalties on these unrecognized tax benefits were $1.9 million. The Company recognizes accrued interest and penalties related to unrecognized tax benefits in income tax expense. If the Company were to prevail on all unrecognized tax benefits recorded, substantially all of the unrecognized tax benefits would benefit the effective tax rate. With an average statute of limitations of approximately five years, up to $1.7 million of the unrecognized tax benefits could potentially expire in the next 12-month period, unless extended by an audit. The Company files income tax returns in the U.S. federal jurisdiction and various state and foreign jurisdictions. With few exceptions, the Company is no longer subject to state and foreign income tax examinations by tax authorities for years before 2010. The United States Internal Revenue Service (IRS) has completed examinations of the Company’s U.S. federal income tax returns through 2016. The Company protested certain IRS proposed material adjustments for fiscal years 2015 and 2016 and entered into the administrative appeals process with the IRS. As previously stated, the Company continues to believe the claims to be without merit and will vigorously defend its position, through litigation if necessary. The Company believes that it is remote that any adjustment necessary to the reserve for income taxes over the next 12-month period will be material. However, it is possible the ultimate resolution of audits or disputes may result in a material change to the reserve for income taxes, although the quantification of such potential adjustments cannot be made at this time.

Income Taxes

On December 22, 2017, the U.S. Tax Cuts and Jobs Act (TCJA) was enacted into law. The TCJA significantly reforms the Internal Revenue Code of 1986, including but not limited to reducing the U.S. federal corporate income tax rate from 35 percent to 21 percent and moving toward a territorial tax system with a one-time transition tax imposed on previously unremitted foreign earnings and profits.

Staff Accounting Bulletin 118 (SAB 118) includes additional guidance allowing companies to use a measurement period that should not extend beyond one year from the TCJA enactment date to account for the impacts of the law in their financial statements.

There have been no material measurement period adjustments made during the three months ended October 31, 2018 related to the provisional amounts recorded and disclosed in the Company’s Annual Report on Form 10-K for the year ended July 31, 2018.

During the three months ended October 31, 2018, the Company made the accounting policy election to treat taxes related to the Global Intangible Low-Taxed Income (GILTI) provision of the TCJA as a current period expense when incurred.

Although the Company believes it has made reasonable estimates in accounting for the impacts of the TCJA, these tax charges and benefits are provisional, as the Company is still analyzing certain aspects of the legislation and refining calculations as information becomes available during the measurement period as allowed by SAB 118. The accounting for the income tax effects of the TCJA is expected to be completed during the second quarter of fiscal 2019 and any future adjustments will be recognized as discrete income tax expense or benefit in the period the adjustments are determined.

As of October 31, 2018, the gross unrecognized tax benefits were $19.4 million and accrued interest and penalties on these unrecognized tax benefits were $1.9 million. The Company recognizes accrued interest and penalties related to unrecognized tax benefits in income tax expense. If the Company were to prevail on all unrecognized tax benefits recorded, substantially all of the unrecognized tax benefits would benefit the effective tax rate. With an average statute of limitations of approximately five years, up to $1.7 million of the unrecognized tax benefits could potentially expire in the next 12-month period, unless extended by an audit.

The Company files income tax returns in the U.S. federal jurisdiction and various state and foreign jurisdictions. With few exceptions, the Company is no longer subject to state and foreign income tax examinations by tax authorities for years before 2010. The United States Internal Revenue Service (IRS) has completed examinations of the Company’s U.S. federal income tax returns through 2016. The Company protested certain IRS proposed material adjustments for fiscal years 2015 and 2016 and entered into the administrative appeals process with the IRS. As previously stated, the Company continues to believe the claims to be without merit and will vigorously defend its position, through litigation if necessary.

The Company believes that it is remote that any adjustment necessary to the reserve for income taxes over the next 12-month period will be material. However, it is possible the ultimate resolution of audits or disputes may result in a material change to the reserve for income taxes, although the quantification of such potential adjustments cannot be made at this time.