Condensed Consolidated Financial Statements	6 Months Ended
Oct. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Condensed Consolidated Financial Statements	Condensed Consolidated Financial Statements We prepared the accompanying unaudited condensed consolidated financial statements pursuant to the rules and regulations of the U.S. Securities and Exchange Commission for interim financial information. In accordance with those rules and regulations, we condensed or omitted certain information and disclosures normally included in annual financial statements prepared in accordance with U.S. generally accepted accounting principles (GAAP). We suggest that you read these condensed financial statements together with the financial statements and footnotes included in our annual report on Form 10-K for the fiscal year ended April 30, 2015 (the 2015 Form 10-K). In our opinion, the accompanying financial statements include all adjustments, consisting only of normal recurring adjustments, necessary for a fair statement of our financial results for the periods covered by this report. We prepared the accompanying financial statements on a basis that is substantially consistent with the accounting principles applied in our 2015 Form 10-K, although during the first quarter of fiscal 2016 we adopted new guidance for the presentation of debt issuance costs. Under the new guidance, debt issuance costs are presented as a direct deduction from the debt liability rather than as an asset. In adopting the new guidance, we retrospectively adjusted our balance sheet as of April 30, 2015. As a result, the carrying amounts of other assets (noncurrent) and long-term debt have decreased by $5 million from the amounts previously reported as of that date. In May 2014, the Financial Accounting Standards Board (FASB) issued new guidance on the recognition of revenue from contracts with customers. As issued, the new guidance would have become effective for us beginning fiscal 2018. However, the FASB has since deferred the effective date until our fiscal 2019, though permitting voluntary adoption as of the original effective date. The FASB has also proposed further amendments to the new guidance. We are currently evaluating the potential impact of the new guidance and the proposed amendments on our financial statements.

Condensed Consolidated Financial Statements

We prepared the accompanying unaudited condensed consolidated financial statements pursuant to the rules and regulations of the U.S. Securities and Exchange Commission for interim financial information. In accordance with those rules and regulations, we condensed or omitted certain information and disclosures normally included in annual financial statements prepared in accordance with U.S. generally accepted accounting principles (GAAP). We suggest that you read these condensed financial statements together with the financial statements and footnotes included in our annual report on Form 10-K for the fiscal year ended April 30, 2015 (the 2015 Form 10-K).

In our opinion, the accompanying financial statements include all adjustments, consisting only of normal recurring adjustments, necessary for a fair statement of our financial results for the periods covered by this report.

We prepared the accompanying financial statements on a basis that is substantially consistent with the accounting principles applied in our 2015 Form 10-K, although during the first quarter of fiscal 2016 we adopted new guidance for the presentation of debt issuance costs. Under the new guidance, debt issuance costs are presented as a direct deduction from the debt liability rather than as an asset. In adopting the new guidance, we retrospectively adjusted our balance sheet as of April 30, 2015. As a result, the carrying amounts of other assets (noncurrent) and long-term debt have decreased by $5 million from the amounts previously reported as of that date.

In May 2014, the Financial Accounting Standards Board (FASB) issued new guidance on the recognition of revenue from contracts with customers. As issued, the new guidance would have become effective for us beginning fiscal 2018. However, the FASB has since deferred the effective date until our fiscal 2019, though permitting voluntary adoption as of the original effective date. The FASB has also proposed further amendments to the new guidance. We are currently evaluating the potential impact of the new guidance and the proposed amendments on our financial statements.