Recently Issued Accounting Standards	3 Months Ended
Jul. 31, 2015
Recently Issued Accounting Standards [Abstract]
Recently Issued Accounting Standards	Note 2: Recently Issued Accounting Standards In May 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2015-07, Fair Value Measurement (Topic 820) Disclosure for Investments in Certain Entities That Calculate Net Asset Value per Share (or Its Equivalent). ASU 2015-07 requires that investments measured using the net asset value (“NAV”) per share, or its equivalent practical expedient, be disclosed as a reconciling item between the balance sheet amounts and the amounts reported in the fair value hierarchy. Although ASU 2015-07 is not effective for us until May 1, 2016, we have elected early adoption and will present impacted investments as of April 30, 2016, in accordance with ASU 2015-07. We will change our presentation of Level 3 assets valued using NAV in the pensions and other postretirement benefits disclosure as required. ASU 2015-07 will be applied retrospectively to all periods presented. In April 2015, the FASB issued ASU 2015-03, Interest – Imputation of Interest (Subtopic 835-30) Simplifying the Presentation of Debt Issuance Costs. ASU 2015-03 requires debt issuance costs to be presented in the balance sheet as a direct deduction from the carrying amount of the related debt. ASU 2015-03 is effective for us on May 1, 2016, but we have elected early adoption. As of April 30, 2015, we reclassified debt issuance costs associated with our long-term debt from other noncurrent assets to long-term debt to conform to ASU 2015-03. For additional information, see Note 6: Debt and Financing Information. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). ASU 2014-09 will require either retrospective application to each prior reporting period presented or retrospective application with the cumulative effect of initially applying the standard recognized at the date of adoption. Under the original issuance, the standard would have been effective for us on May 1, 2017. However, in August 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers (Topic 606) Deferral of the Effective Date which extends the standard effective date by one year. As a result of this issuance, the standard will be effective for us on May 1, 2018, with the option to early adopt at the original effective date. We are currently evaluating the impact the application of ASU 2014-09 will have on our financial statements and disclosures.

Note 2: Recently Issued Accounting Standards

In May 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2015-07, Fair Value Measurement (Topic 820) Disclosure for Investments in Certain Entities That Calculate Net Asset Value per Share (or Its Equivalent). ASU 2015-07 requires that investments measured using the net asset value (“NAV”) per share, or its equivalent practical expedient, be disclosed as a reconciling item between the balance sheet amounts and the amounts reported in the fair value hierarchy. Although ASU 2015-07 is not effective for us until May 1, 2016, we have elected early adoption and will present impacted investments as of April 30, 2016, in accordance with ASU 2015-07. We will change our presentation of Level 3 assets valued using NAV in the pensions and other postretirement benefits disclosure as required. ASU 2015-07 will be applied retrospectively to all periods presented.

In April 2015, the FASB issued ASU 2015-03, Interest – Imputation of Interest (Subtopic 835-30) Simplifying the Presentation of Debt Issuance Costs. ASU 2015-03 requires debt issuance costs to be presented in the balance sheet as a direct deduction from the carrying amount of the related debt. ASU 2015-03 is effective for us on May 1, 2016, but we have elected early adoption. As of April 30, 2015, we reclassified debt issuance costs associated with our long-term debt from other noncurrent assets to long-term debt to conform to ASU 2015-03. For additional information, see Note 6: Debt and Financing Information.

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). ASU 2014-09 will require either retrospective application to each prior reporting period presented or retrospective application with the cumulative effect of initially applying the standard recognized at the date of adoption. Under the original issuance, the standard would have been effective for us on May 1, 2017. However, in August 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers (Topic 606) Deferral of the Effective Date which extends the standard effective date by one year. As a result of this issuance, the standard will be effective for us on May 1, 2018, with the option to early adopt at the original effective date. We are currently evaluating the impact the application of ASU 2014-09 will have on our financial statements and disclosures.