Recent Accounting Pronouncements (Policies)	9 Months Ended
Jun. 30, 2017
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Recent Accounting Pronouncements	In March 2017, the Financial Accounting Standards Board (FASB) issued new guidance on the presentation of the net periodic cost of postretirement benefit programs. The new standard requires sponsors of defined benefit postretirement plans to present the non-service cost components of net periodic benefit cost separate from the service cost component on the income statement. The new standard also requires that the non-service cost components of net periodic benefit cost no longer be capitalized within assets. The Company is evaluating the effects the standard will have on the Company’s consolidated financial statements and related disclosures beyond the change in income statement presentation. This new standard is effective for the Company in fiscal year 2019, with early adoption permitted. In January 2017, FASB issued new guidance regarding the goodwill impairment test. The new guidance eliminates the Step 2 valuation test when evaluating goodwill for impairment. The new guidance requires that an entity performs its annual or interim goodwill test by comparing the fair value of the reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value. The loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. The Company is evaluating the effect the updated standard will have on the Company’s consolidated financial statements and related disclosures. The guidance will be effective for the Company in fiscal year 2021, with early adoption permitted. In October 2016, FASB issued new guidance regarding income taxes. The new guidance will require the tax effects of intercompany transactions, other than sales of inventory, to be recognized currently, eliminating an exception under current Generally Accepted Accounting Principles (GAAP) in which the tax effects of intra-entity asset transfers are deferred until the transferred asset is sold to a third party or otherwise recovered through use. The Company is evaluating the effect the updated standard will have on the Company’s consolidated financial statements and related disclosures. The guidance will be effective for the Company in fiscal year 2019, with early adoption permitted. In August 2016, the FASB issued new guidance addressing how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The Company is evaluating the effect the updated standard will have on the Company’s consolidated financial statements and related disclosures. The guidance will be effective for the Company in fiscal year 2019, with early adoption permitted. In June 2016, the FASB issued a new standard on the measurement of credit losses, which will impact the Company’s measurement of trade receivables. The new standard replaces the current incurred loss model with a forward-looking expected loss model that is likely to result in earlier recognition of losses. The Company is evaluating the effect the updated standard will have on the Company’s consolidated financial statements and related disclosures. The new standard is effective for the Company in fiscal year 2021, with early adoption permitted, but not earlier than in fiscal year 2020. In March 2016, the FASB issued new guidance simplifying certain aspects of accounting for share-based payments. The key provision of the new standard requires that excess tax benefits and shortfalls be recorded as income tax benefit or expense in the income statement, rather than in equity. The Company adopted the new guidance during the first nine months of fiscal 2017, which resulted in a $2.3 million benefit to income tax expense and a favorable impact to operating cash flows of $2.3 million. The Company has also elected to account for forfeitures as they occur, rather than estimate expected forfeitures, which resulted in a positive cumulative effect on retained earnings of $0.9 million and a reduction of additional paid-in capital of $0.9 million. In February 2016, the FASB issued a new lease accounting standard, which provides revised guidance on accounting for lease arrangements by both lessors and lessees. The central requirement of the new standard is that lessees must recognize lease related assets and liabilities for all leases with a term longer than 12 months. The Company is evaluating the effect the standard will have on the Company’s consolidated financial statements and related disclosures. The new standard is effective for the Company in fiscal year 2020, with early adoption permitted. In May 2014, the FASB amended requirements for an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The updated standard will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective, and permits the use of either the retrospective or cumulative effect transition method. The Company is evaluating the effect the updated standard will have on the Company’s consolidated financial statements and related disclosures. The updated standard becomes effective for the Company in the first quarter of fiscal 2019, with early adoption permitted. Anticipated changes under the new standard include accounting for development costs and associated customer funding related to certain contracts and increased use of over-time revenue recognition based on costs incurred for certain contracts. The new standard also significantly enhances required disclosures regarding revenue and related assets and liabilities. The Company is in the process of evaluating changes to business processes, systems and internal controls required to implement the new accounting standard.

In March 2017, the Financial Accounting Standards Board (FASB) issued new guidance on the presentation of the net periodic cost of postretirement benefit programs. The new standard requires sponsors of defined benefit postretirement plans to present the non-service cost components of net periodic benefit cost separate from the service cost component on the income statement. The new standard also requires that the non-service cost components of net periodic benefit cost no longer be capitalized within assets. The Company is evaluating the effects the standard will have on the Company’s consolidated financial statements and related disclosures beyond the change in income statement presentation. This new standard is effective for the Company in fiscal year 2019, with early adoption permitted.

In January 2017, FASB issued new guidance regarding the goodwill impairment test. The new guidance eliminates the Step 2 valuation test when evaluating goodwill for impairment. The new guidance requires that an entity performs its annual or interim goodwill test by comparing the fair value of the reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value. The loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. The Company is evaluating the effect the updated standard will have on the Company’s consolidated financial statements and related disclosures. The guidance will be effective for the Company in fiscal year 2021, with early adoption permitted.

In October 2016, FASB issued new guidance regarding income taxes. The new guidance will require the tax effects of intercompany transactions, other than sales of inventory, to be recognized currently, eliminating an exception under current Generally Accepted Accounting Principles (GAAP) in which the tax effects of intra-entity asset transfers are deferred until the transferred asset is sold to a third party or otherwise recovered through use. The Company is evaluating the effect the updated standard will have on the Company’s consolidated financial statements and related disclosures. The guidance will be effective for the Company in fiscal year 2019, with early adoption permitted.

In August 2016, the FASB issued new guidance addressing how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The Company is evaluating the effect the updated standard will have on the Company’s consolidated financial statements and related disclosures. The guidance will be effective for the Company in fiscal year 2019, with early adoption permitted.

In June 2016, the FASB issued a new standard on the measurement of credit losses, which will impact the Company’s measurement of trade receivables. The new standard replaces the current incurred loss model with a forward-looking expected loss model that is likely to result in earlier recognition of losses. The Company is evaluating the effect the updated standard will have on the Company’s consolidated financial statements and related disclosures. The new standard is effective for the Company in fiscal year 2021, with early adoption permitted, but not earlier than in fiscal year 2020.

In March 2016, the FASB issued new guidance simplifying certain aspects of accounting for share-based payments. The key provision of the new standard requires that excess tax benefits and shortfalls be recorded as income tax benefit or expense in the income statement, rather than in equity. The Company adopted the new guidance during the first nine months of fiscal 2017, which resulted in a $2.3 million benefit to income tax expense and a favorable impact to operating cash flows of $2.3 million. The Company has also elected to account for forfeitures as they occur, rather than estimate expected forfeitures, which resulted in a positive cumulative effect on retained earnings of $0.9 million and a reduction of additional paid-in capital of $0.9 million.

In February 2016, the FASB issued a new lease accounting standard, which provides revised guidance on accounting for lease arrangements by both lessors and lessees. The central requirement of the new standard is that lessees must recognize lease related assets and liabilities for all leases with a term longer than 12 months. The Company is evaluating the effect the standard will have on the Company’s consolidated financial statements and related disclosures. The new standard is effective for the Company in fiscal year 2020, with early adoption permitted.

In May 2014, the FASB amended requirements for an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The updated standard will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective, and permits the use of either the retrospective or cumulative effect transition method. The Company is evaluating the effect the updated standard will have on the Company’s consolidated financial statements and related disclosures. The updated standard becomes effective for the Company in the first quarter of fiscal 2019, with early adoption permitted.

Anticipated changes under the new standard include accounting for development costs and associated customer funding related to certain contracts and increased use of over-time revenue recognition based on costs incurred for certain contracts. The new standard also significantly enhances required disclosures regarding revenue and related assets and liabilities. The Company is in the process of evaluating changes to business processes, systems and internal controls required to implement the new accounting standard.