Income Taxes	3 Months Ended
Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our tax provision is determined using an estimated annual effective tax rate and adjusted for discrete taxable events that may occur during the quarter. We recognize the effects of tax legislation in the period in which the law is enacted. Our deferred tax assets and liabilities are remeasured using enacted tax rates expected to apply to taxable income in the years we estimate the related temporary differences to reverse. On December 22, 2017, the President of the United States signed and enacted comprehensive tax legislation into law H.R. 1, commonly referred to as the Tax Cuts and Jobs Act (the “Tax Act”). Except for certain provisions, the Tax Act is effective for tax years beginning on or after January 1, 2018. As a fiscal year U.S. taxpayer, the majority of the provisions will apply to our fiscal 2019, such as eliminating the domestic manufacturing deduction, creating new taxes on certain foreign sourced income and introducing new limitations on certain business deductions. For fiscal 2018 and effective in the first fiscal quarter, the most significant impacts include: lowering of the U.S. federal corporate income tax rate; remeasuring certain net deferred tax liabilities; and requiring the transition tax on the deemed repatriation of certain foreign earnings. The phase in of the lower corporate income tax rate resulted in a blended rate of 24.5% for fiscal 2018, as compared to the previous 35%. The tax rate will be reduced to 21% in subsequent fiscal years. In the first quarter of fiscal 2018, we recorded $77 million net income tax benefit for the provisional remeasurement of certain deferred taxes and related amounts. Additionally, we recorded a provisional $212 million of income tax expense for the estimated effects of the transition tax, net of adjustments related to uncertain tax positions. Based on our current interpretation of the Tax Act, we made reasonable estimates to record provisional adjustments during the first quarter of fiscal 2018, as described above. Collectively, these items did not have a material impact to our condensed consolidated financial statements. Since we are still accumulating and processing data to finalize the underlying calculations and expect regulators to issue further guidance, among other things, we believe our estimates may change during fiscal 2018. We continue to refine such amounts within the measurement period allowed, which will be completed no later than the first quarter of fiscal 2019.

Income Taxes

Our tax provision is determined using an estimated annual effective tax rate and adjusted for discrete taxable events that may occur during the quarter. We recognize the effects of tax legislation in the period in which the law is enacted. Our deferred tax assets and liabilities are remeasured using enacted tax rates expected to apply to taxable income in the years we estimate the related temporary differences to reverse.

On December 22, 2017, the President of the United States signed and enacted comprehensive tax legislation into law H.R. 1, commonly referred to as the Tax Cuts and Jobs Act (the “Tax Act”). Except for certain provisions, the Tax Act is effective for tax years beginning on or after January 1, 2018. As a fiscal year U.S. taxpayer, the majority of the provisions will apply to our fiscal 2019, such as eliminating the domestic manufacturing deduction, creating new taxes on certain foreign sourced income and introducing new limitations on certain business deductions. For fiscal 2018 and effective in the first fiscal quarter, the most significant impacts include: lowering of the U.S. federal corporate income tax rate; remeasuring certain net deferred tax liabilities; and requiring the transition tax on the deemed repatriation of certain foreign earnings. The phase in of the lower corporate income tax rate resulted in a blended rate of 24.5% for fiscal 2018, as compared to the previous 35%. The tax rate will be reduced to 21% in subsequent fiscal years. In the first quarter of fiscal 2018, we recorded $77 million net income tax benefit for the provisional remeasurement of certain deferred taxes and related amounts. Additionally, we recorded a provisional $212 million of income tax expense for the estimated effects of the transition tax, net of adjustments related to uncertain tax positions.

Based on our current interpretation of the Tax Act, we made reasonable estimates to record provisional adjustments during the first quarter of fiscal 2018, as described above. Collectively, these items did not have a material impact to our condensed consolidated financial statements. Since we are still accumulating and processing data to finalize the underlying calculations and expect regulators to issue further guidance, among other things, we believe our estimates may change during fiscal 2018. We continue to refine such amounts within the measurement period allowed, which will be completed no later than the first quarter of fiscal 2019.