Accounting Changes	9 Months Ended
Accounting Changes	Jun. 30, 2016
Accounting Changes and Error Corrections [Abstract]
Accounting Changes	Accounting Changes New Accounting Principle Adopted In November 2015, the Financial Accounting Standards Board ("FASB") issued amended guidance that requires entities to present deferred tax assets and liabilities as noncurrent on the balance sheet instead of separating deferred taxes into current and noncurrent amounts. Early adoption is permitted under the amendments. The Company has retrospectively adopted the guidance effective October 1, 2015 and as such, the condensed consolidated balance sheet as of September 30, 2015 reflects the reclassification of current deferred tax assets of $387 million as noncurrent amounts, after giving effect to jurisdictional netting requirements. New Accounting Principle Not Yet Adopted In March 2016, the FASB issued guidance which amends certain aspects of the accounting for share-based compensation awards to employees. The aspects of share-based compensation accounting which are affected by the guidance include the timing of recognition for award-related income tax effects and the classification of awards as either equity or liabilities on the balance sheet. The amended guidance is effective for the Company on October 1, 2017 and early adoption is permitted. The Company is currently evaluating the impact that the guidance will have on its consolidated financial statements. In February 2016, the FASB issued a new lease accounting standard which requires lessees to recognize lease assets and lease liabilities on the balance sheet. The new standard also requires expanded disclosures regarding leasing arrangements. The Company is currently evaluating the impact that this new lease accounting standard will have on its consolidated financial statements upon its adoption of the standard on October 1, 2019. In May 2014, the FASB issued a new revenue recognition standard. Under this standard, revenue will be recognized upon the transfer of goods or services to customers and the amount of revenue recognized will reflect the consideration to which a reporting entity expects to be entitled in exchange for those goods or services. The Company is currently evaluating the impact that this new revenue recognition standard will have on its consolidated financial statements and the Company currently intends to adopt the standard on October 1, 2018, as is allowed under the FASB's July 2015 amendment which deferred the effective date for this standard.

The entire disclosure for reporting accounting changes and error corrections. It includes the conveyance of information necessary for a user of the Company's financial information to understand all aspects and required disclosure information concerning all changes and error corrections reported in the Company's financial statements for the period.