New Accounting Pronouncements (Policies)	9 Months Ended
May 31, 2018
New Accounting Pronouncements And Changes In Accounting Principles [Abstract]
New Accounting Pronouncements	Recent Accounting Guidance Not Yet Adopted In May 2014, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers. In August 2015, the FASB issued ASU No. 2015-14, Revenue from Contracts with Customers: Deferral of the Effective Date. The standard provides a single model for revenue arising from contracts with customers and supersedes current revenue recognition guidance. The ASU requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of goods or services. The ASU will replace existing revenue recognition guidance in U.S. GAAP and becomes effective in the first quarter of the Company’s fiscal 2019. Early adoption is permitted only in fiscal 2018. The guidance permits companies to either apply the requirements retrospectively to all prior periods presented, or apply the requirements in the year of adoption, through a cumulative adjustment. The Company is continuing to evaluate the impact of the ASU on the Company’s operations, accounting policies, internal control over financial reporting, consolidated financial statements, and disclosures. The Company has identified that the key changes in the ASU that could potentially impact the Company’s revenue recognition relates to the allocation of contract revenues between various products and services, the timing of when those revenues are recognized, and the deferral of incremental costs to obtain a contract. Based on the current status of the evaluation, the adoption of the standard is not expected to have a material effect on the amounts or timing of revenue recognition. The Company expects to adopt the new standard using the modified retrospective approach effective September 1, 2018. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842). The standard requires a lessee to recognize assets and liabilities arising from an operating lease on the balance sheet. Additionally, companies are permitted to make an accounting policy election to not recognize lease assets and liabilities for leases with a term of 12 months or less. The effective date of ASU No. 2016-02 will be the first quarter of the Company’s fiscal 2020 with early adoption permitted. The Company is currently in the assessment phase and is evaluating the effect that adopting this standard will have on its consolidated financial statements. In March 2017, the FASB issued ASU 2017-07, Presentation of Net Periodic Benefit Cost Related to Defined Benefit Plans, which amends the income statement presentation requirements for the components of net periodic benefit cost for an entity's defined benefit pension and post-retirement plans. ASU 2017-07 is effective in the first quarter of the Company’s fiscal 2019 with early adoption permitted. The Company does not believe this ASU will have a material impact on the consolidated financial statements. In August 2017, the FASB issued ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities, which modifies the financial reporting of hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. ASU 2017-12 is effective in the first quarter of the Company’s fiscal 2020 with early adoption permitted. The Company does not believe the adoption of this ASU will have a material impact on the consolidated financial statements. In February 2018, the FASB issued ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which provides entities with the option to eliminate the stranded tax effects associated with the change in tax rates under the U.S. Tax Cuts and Jobs Act of 2017 (“U.S. Tax Reform”) through a reclassification of the stranded tax effects from accumulated other comprehensive income (“AOCI”) to retained earnings. The amount of the reclassification would be calculated on the basis of the difference between the historical and newly enacted tax rates for deferred tax liabilities and assets related to items within AOCI. ASU 2018-02 is effective in the first quarter of the Company’s fiscal 2020 with early adoption permitted. Companies should apply the proposed amendments either in the period of adoption or retrospectively to each period (or periods) in which the effect of the change in the U.S. federal corporate income tax rate from U.S. Tax Reform is recognized. The Company does not believe the adoption of this ASU will have a material impact on the consolidated financial statements. Recent Accounting Guidance Adopted In December 2017, the SEC staff issued Staff Accounting Bulletin No. 118 (“SAB 118”), Income Tax Accounting Implications of the Tax Cuts and Jobs Act, which provides guidance on accounting for the impacts of U.S. Tax Reform. SAB 118 directs companies to consider the impact of U.S. Tax Reform as provisional when it does not have the necessary information available, prepared, or analyzed in reasonable detail to complete its accounting under Accounting Standards Codification (“ASC”) Topic 740, Income Taxes. The Company has not yet completed its accounting for the tax effects of the U.S. Tax Reform; however it has made a reasonable, but provisional, estimate of the effects as more fully explained in Note 6 to the condensed consolidated financial statements.

Recent Accounting Guidance Not Yet Adopted

In May 2014, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers. In August 2015, the FASB issued ASU No. 2015-14, Revenue from Contracts with Customers: Deferral of the Effective Date. The standard provides a single model for revenue arising from contracts with customers and supersedes current revenue recognition guidance. The ASU requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of goods or services. The ASU will replace existing revenue recognition guidance in U.S. GAAP and becomes effective in the first quarter of the Company’s fiscal 2019. Early adoption is permitted only in fiscal 2018. The guidance permits companies to either apply the requirements retrospectively to all prior periods presented, or apply the requirements in the year of adoption, through a cumulative adjustment.

The Company is continuing to evaluate the impact of the ASU on the Company’s operations, accounting policies, internal control over financial reporting, consolidated financial statements, and disclosures. The Company has identified that the key changes in the ASU that could potentially impact the Company’s revenue recognition relates to the allocation of contract revenues between various products and services, the timing of when those revenues are recognized, and the deferral of incremental costs to obtain a contract. Based on the current status of the evaluation, the adoption of the standard is not expected to have a material effect on the amounts or timing of revenue recognition. The Company expects to adopt the new standard using the modified retrospective approach effective September 1, 2018.

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842). The standard requires a lessee to recognize assets and liabilities arising from an operating lease on the balance sheet. Additionally, companies are permitted to make an accounting policy election to not recognize lease assets and liabilities for leases with a term of 12 months or less. The effective date of ASU No. 2016-02 will be the first quarter of the Company’s fiscal 2020 with early adoption permitted. The Company is currently in the assessment phase and is evaluating the effect that adopting this standard will have on its consolidated financial statements.

In March 2017, the FASB issued ASU 2017-07, Presentation of Net Periodic Benefit Cost Related to Defined Benefit Plans, which amends the income statement presentation requirements for the components of net periodic benefit cost for an entity's defined benefit pension and post-retirement plans. ASU 2017-07 is effective in the first quarter of the Company’s fiscal 2019 with early adoption permitted. The Company does not believe this ASU will have a material impact on the consolidated financial statements.

In August 2017, the FASB issued ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities, which modifies the financial reporting of hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. ASU 2017-12 is effective in the first quarter of the Company’s fiscal 2020 with early adoption permitted. The Company does not believe the adoption of this ASU will have a material impact on the consolidated financial statements.

In February 2018, the FASB issued ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which provides entities with the option to eliminate the stranded tax effects associated with the change in tax rates under the U.S. Tax Cuts and Jobs Act of 2017 (“U.S. Tax Reform”) through a reclassification of the stranded tax effects from accumulated other comprehensive income (“AOCI”) to retained earnings. The amount of the reclassification would be calculated on the basis of the difference between the historical and newly enacted tax rates for deferred tax liabilities and assets related to items within AOCI. ASU 2018-02 is effective in the first quarter of the Company’s fiscal 2020 with early adoption permitted. Companies should apply the proposed amendments either in the period of adoption or retrospectively to each period (or periods) in which the effect of the change in the U.S. federal corporate income tax rate from U.S. Tax Reform is recognized. The Company does not believe the adoption of this ASU will have a material impact on the consolidated financial statements.

Recent Accounting Guidance Adopted

In December 2017, the SEC staff issued Staff Accounting Bulletin No. 118 (“SAB 118”), Income Tax Accounting Implications of the Tax Cuts and Jobs Act, which provides guidance on accounting for the impacts of U.S. Tax Reform. SAB 118 directs companies to consider the impact of U.S. Tax Reform as provisional when it does not have the necessary information available, prepared, or analyzed in reasonable detail to complete its accounting under Accounting Standards Codification (“ASC”) Topic 740, Income Taxes. The Company has not yet completed its accounting for the tax effects of the U.S. Tax Reform; however it has made a reasonable, but provisional, estimate of the effects as more fully explained in Note 6 to the condensed consolidated financial statements.