Income Taxes	9 Months Ended
Apr. 30, 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. On December 22, 2017, the SEC issued Staff Accounting Bulletin 118 (SAB 118) that 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. The Company has accounted for certain income tax effects of the TCJA to the extent a reasonable estimate could be made during the periods ended April 30, 2018. The most significant impacts of the enacted legislation for the Company’s current fiscal year include lowering of the U.S. federal corporate income tax rate, the re-measurement of the Company’s net deferred tax assets to reflect their value at the reduced tax rate and the one-time transition tax on the deemed repatriation of certain foreign earnings. The Company’s U.S. federal statutory tax rate will be a blended rate of 26.9 percent for fiscal 2018 and 21 percent for fiscal 2019. The Company recorded a discrete tax charge of $1.4 million during the second quarter ended January 31, 2018 for the re-measurement of its net deferred tax assets. The Company also recorded a discrete tax charge of $108.3 million during the second quarter ended January 31, 2018 for the one-time transition tax on deemed repatriated earnings of its non-U.S. subsidiaries. This charge is inclusive of U.S. state income tax on the portion of the earnings expected to be repatriated. The one-time transition tax is based on the Company’s post-1986 earnings and profits not previously subjected to U.S. taxation. During the third quarter ended April 30, 2018, the Company made adjustments to its initial estimates. The Company recorded a net tax benefit of $4.2 million due to the filing of the Company's fiscal 2017 tax return, reflecting $4.9 million of tax benefits related to a further re-measurement of net deferred tax assets that was primarily driven by the $35.0 million pension plan contributions made in the quarter, partially offset by a reduction in manufacturing incentive credits. The Company also recorded an additional tax charge of $4.6 million during the third quarter ended April 30, 2018 for the transition tax, increasing the total estimated transition tax to $112.9 million. The transition tax is payable over an eight-year period, and the portion not due within 12 months of $103.5 million is classified within other long-term liabilities in the Condensed Consolidated Balance Sheet as of April 30, 2018. Although the Company made reasonable estimates in accounting for the impacts of the TCJA, these tax charges 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 at fiscal year-end and any future adjustments will be recognized as discrete income tax expense or benefit in the period the adjustments are determined. The TCJA also adds many new provisions that do not apply to the Company until fiscal 2019, including the deduction for executive compensation and interest expense, a tax on global intangible low-taxed income, the base erosion anti-abuse tax and a deduction for foreign-derived intangible income. The Company has not made any adjustments in its financial statements related to these new provisions during the periods ended April 30, 2018 and continues to evaluate the future impact of these provisions. The TCJA moves toward a territorial tax system through the provision of a 100% dividends received deduction for the foreign-source portions of dividends received from controlled foreign subsidiaries. As a result, the Company is in the process of evaluating its indefinite reinvestment assertions with regard to unremitted earnings for certain of its foreign subsidiaries. As part of this evaluation, the Company will consider estimated global working capital levels, capital investment requirements and the potential tax liabilities that would be incurred if the foreign subsidiaries distribute cash to the U.S. parent and make a determination in the SAB 118 measurement period as to whether earnings of these subsidiaries remain permanently invested or not. If the Company determines that a subsidiary should no longer remain subject to the indefinite reinvestment assertion, additional tax charges will be accrued, including but not limited to state income taxes, withholding taxes and other relevant foreign taxes in the period the conclusion is determined. As of April 30, 2018, the Company has determined that the earnings of certain subsidiaries are no longer subject to the indefinite reinvestment assertion and recorded an immaterial provisional estimate of the withholding taxes due on the repatriation of those earnings. The Company will continue to evaluate its global cash needs and opportunities to repatriate cash as part of an effort to more precisely compute this tax impact. 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 2008. The United States Internal Revenue Service (IRS) has completed examinations of the Company’s U.S. federal income tax returns through 2013. Currently, the Company is under examination by the IRS for fiscal years 2015 and 2016, and on May 29, 2018, the IRS proposed an adjustment related to the Company’s foreign legal entity restructuring which was completed in fiscal 2015. The Company disagrees with the IRS proposal and believes their claims to be without merit. The Company will vigorously defend its position, beginning with an attempt to resolve these matters at the IRS Appellate level and through litigation if necessary. As of April 30, 2018, the gross unrecognized tax benefits were $19.7 million and accrued interest and penalties on these unrecognized tax benefits were $2.8 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 $2.4 million of the unrecognized tax benefits could potentially expire in the next 12-month period, unless extended by an audit. The Company believes that it is remote that any adjustment necessary to our 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 our 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.

On December 22, 2017, the SEC issued Staff Accounting Bulletin 118 (SAB 118) that 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. The Company has accounted for certain income tax effects of the TCJA to the extent a reasonable estimate could be made during the periods ended April 30, 2018.

The most significant impacts of the enacted legislation for the Company’s current fiscal year include lowering of the U.S. federal corporate income tax rate, the re-measurement of the Company’s net deferred tax assets to reflect their value at the reduced tax rate and the one-time transition tax on the deemed repatriation of certain foreign earnings. The Company’s U.S. federal statutory tax rate will be a blended rate of 26.9 percent for fiscal 2018 and 21 percent for fiscal 2019. The Company recorded a discrete tax charge of $1.4 million during the second quarter ended January 31, 2018 for the re-measurement of its net deferred tax assets. The Company also recorded a discrete tax charge of $108.3 million during the second quarter ended January 31, 2018 for the one-time transition tax on deemed repatriated earnings of its non-U.S. subsidiaries. This charge is inclusive of U.S. state income tax on the portion of the earnings expected to be repatriated. The one-time transition tax is based on the Company’s post-1986 earnings and profits not previously subjected to U.S. taxation.

During the third quarter ended April 30, 2018, the Company made adjustments to its initial estimates. The Company recorded a net tax benefit of $4.2 million due to the filing of the Company's fiscal 2017 tax return, reflecting $4.9 million of tax benefits related to a further re-measurement of net deferred tax assets that was primarily driven by the $35.0 million pension plan contributions made in the quarter, partially offset by a reduction in manufacturing incentive credits. The Company also recorded an additional tax charge of $4.6 million during the third quarter ended April 30, 2018 for the transition tax, increasing the total estimated transition tax to $112.9 million. The transition tax is payable over an eight-year period, and the portion not due within 12 months of $103.5 million is classified within other long-term liabilities in the Condensed Consolidated Balance Sheet as of April 30, 2018. Although the Company made reasonable estimates in accounting for the impacts of the TCJA, these tax charges 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 at fiscal year-end and any future adjustments will be recognized as discrete income tax expense or benefit in the period the adjustments are determined.

The TCJA also adds many new provisions that do not apply to the Company until fiscal 2019, including the deduction for executive compensation and interest expense, a tax on global intangible low-taxed income, the base erosion anti-abuse tax and a deduction for foreign-derived intangible income. The Company has not made any adjustments in its financial statements related to these new provisions during the periods ended April 30, 2018 and continues to evaluate the future impact of these provisions.

The TCJA moves toward a territorial tax system through the provision of a 100% dividends received deduction for the foreign-source portions of dividends received from controlled foreign subsidiaries. As a result, the Company is in the process of evaluating its indefinite reinvestment assertions with regard to unremitted earnings for certain of its foreign subsidiaries. As part of this evaluation, the Company will consider estimated global working capital levels, capital investment requirements and the potential tax liabilities that would be incurred if the foreign subsidiaries distribute cash to the U.S. parent and make a determination in the SAB 118 measurement period as to whether earnings of these subsidiaries remain permanently invested or not. If the Company determines that a subsidiary should no longer remain subject to the indefinite reinvestment assertion, additional tax charges will be accrued, including but not limited to state income taxes, withholding taxes and other relevant foreign taxes in the period the conclusion is determined. As of April 30, 2018, the Company has determined that the earnings of certain subsidiaries are no longer subject to the indefinite reinvestment assertion and recorded an immaterial provisional estimate of the withholding taxes due on the repatriation of those earnings. The Company will continue to evaluate its global cash needs and opportunities to repatriate cash as part of an effort to more precisely compute this tax impact.

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 2008. The United States Internal Revenue Service (IRS) has completed examinations of the Company’s U.S. federal income tax returns through 2013. Currently, the Company is under examination by the IRS for fiscal years 2015 and 2016, and on May 29, 2018, the IRS proposed an adjustment related to the Company’s foreign legal entity restructuring which was completed in fiscal 2015. The Company disagrees with the IRS proposal and believes their claims to be without merit. The Company will vigorously defend its position, beginning with an attempt to resolve these matters at the IRS Appellate level and through litigation if necessary.

As of April 30, 2018, the gross unrecognized tax benefits were $19.7 million and accrued interest and penalties on these unrecognized tax benefits were $2.8 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 $2.4 million of the unrecognized tax benefits could potentially expire in the next 12-month period, unless extended by an audit.

The Company believes that it is remote that any adjustment necessary to our 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 our reserve for income taxes, although the quantification of such potential adjustments cannot be made at this time.