Basis of Presentation and Summary of Critical Accounting Policies (Policies)	9 Months Ended
Jan. 28, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Recently Issued Accounting Pronouncements	Recent Accounting Pronouncements Accounting Standards Adopted In March 2016, the Financial Accounting Standards Board ("FASB") issued ASU 2016-09, which is intended to simplify certain aspects of the accounting for share-based payment award transactions, including income tax effects when awards vest or settle, repurchase of employees’ shares to satisfy statutory tax withholding obligations, an option to account for forfeitures as they occur, and classification of certain amounts on the statements of cash flows. ASU 2016-09 is effective for annual and interim reporting periods beginning after December 15, 2016. Early adoption is permitted, and we adopted it during the first quarter of fiscal 2017. We have elected to continue to estimate forfeitures expected to occur to determine the amount of compensation cost to be recognized in each period. Provisions related to income taxes have been adopted prospectively. Provisions related to the statements of cash flows have been adopted retrospectively but did not have a material impact on our statements of cash flows. In March 2016, the FASB issued ASU 2016-07, Investments - Equity Method and Joint Ventures (Topic 323) Simplifying the Transition to the Equity Method of Accounting. ASU 2016-07 eliminates the requirement that when an investment, initially accounted for under a method other than the equity method of accounting, subsequently qualifies for use of the equity method, an investor must retrospectively apply the equity method in prior periods in which it held the investment. This requires an investor to determine the fair value of the investee’s underlying assets and liabilities retrospectively at each investment date and revise all prior periods as if the equity method had always been applied. The new guidance requires the investor to apply the equity method prospectively from the date the investment qualifies for the equity method. The investor will add the carrying value of the existing investment to the cost of the additional investment to determine the initial cost basis of the equity method investment. ASU 2016-07 was adopted by the Company effective the beginning of our third quarter of fiscal 2017 and did not have a material impact on our consolidated results of operations, cash flows, or financial position. In July 2015, the FASB issued ASU 2015-11, Simplifying the Measurement of Inventory, which changes the measurement principle of inventory from the lower of cost or market to the lower of cost and net realizable value. The guidance will require prospective application at the beginning of our first quarter of fiscal 2018, but it permits adoption in an earlier period. ASU 2015-11 was adopted by the Company effective May 1, 2016 and did not have a material impact on our consolidated results of operations, cash flows, or financial position. In April 2015, the FASB issued ASU 2015-05, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40) Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement. This ASU clarifies existing GAAP guidance about a customer’s accounting for fees paid in a cloud computing arrangement ("CCA") with or without a software license. Examples of CCAs include software as a service, platform as a service, infrastructure as a service, and other similar hosting arrangements. Under ASU 2015-05, fees paid by a customer in a CCA for a software license are within the scope of the internal-use software guidance if certain criteria are met. If the criteria are not met, the fees paid are accounted for as a prepaid service contract and expensed. We have historically accounted for all fees in a CCA as a prepaid service contract. We adopted ASU 2015-05 in the first quarter of fiscal 2017 when it became effective, using the prospective method. We did not pay any fees in a CCA in the current period that met the criteria to be in the scope of the internal-use software guidance, and ASU 2015-05 had no impact on our consolidated results of operations, cash flows, or financial position. New Accounting Standards Not Yet Adopted In January 2017, the FASB issued ASU 2017-04, Intangibles-Goodwill and Other (Topic 350), which simplifies the subsequent measurement of goodwill by removing the second step of the two-step impairment test. The amendment requires an entity to perform its annual, or interim goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. A goodwill impairment will be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. ASU 2017-04 is effective for interim and annual periods beginning after December 15, 2019, and will require adoption on a prospective basis. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. We are currently evaluating the effect that adopting this new accounting guidance will have on our consolidated results of operations, cash flows, and financial position. In October 2016, the FASB issued ASU 2016-16, Income Taxes (Topic 740) Intra-Entity Transfers of Assets Other than Inventory, which is intended to improve the accounting for the income tax consequences of intra-entity transfers of assets other than inventory. Current U.S. GAAP prohibits the recognition of current and deferred income taxes for an intra-entity asset transfer until the asset has been sold to an outside party, which is an exception to the principle of comprehensive recognition of current and deferred income taxes in U.S. GAAP. This update eliminates the exception by requiring entities to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. ASU 2016-16 is effective for interim and annual periods beginning after December 15, 2017, with early adoption permitted. We are currently evaluating the effect that adopting this new accounting guidance will have on our consolidated financial statements and related disclosures. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230) Classification of Certain Cash Receipts and Cash Payments, which will make eight targeted changes to how cash receipts and cash payments are presented and classified in the statements of cash flows. ASU 2016-15 is effective for interim and annual periods beginning after December 15, 2017, and will require adoption on a retrospective basis unless it is impracticable to apply, in which case we would be required to apply the amendments prospectively as of the earliest date practicable. We are currently evaluating the effect that adopting this new accounting guidance will have on our consolidated cash flows and related disclosures. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which sets out the principles for the recognition, measurement, presentation and disclosure of leases for both parties to a contract (that is, lessees and lessors). ASU 2016-02 requires lessees to apply a dual approach, classifying leases as either finance or operating leases based on the principle of whether or not the lease is effectively a financed purchase of the leased asset by the lessee. This classification will determine whether the lease expense is recognized based on an effective interest method or on a straight-line basis over the term of the lease. A lessee is also required to record a right-of-use asset and a lease liability for all leases with a term of greater than 12 months regardless of their classification. The new standard requires lessors to account for leases using an approach that is substantially equivalent to existing guidance for sales-type leases, direct financing leases and operating leases. The new guidance is effective for interim and annual periods beginning after December 15, 2018, with early adoption permitted. We are currently evaluating the effect that adopting this new accounting guidance will have on our consolidated results of operations, cash flows, and financial position. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers. ASU 2014-09 is a comprehensive revenue recognition model that requires a company to recognize revenue from the transfer of goods or services to customers in an amount that reflects the consideration that the entity expects to receive in exchange for those goods or services. The FASB has also issued ASUs 2016-08, 2016-10, and 2016-12 to clarify guidance with respect to principal versus agent considerations, the identification of performance obligations and licensing and certain narrow areas and adds practical expedients. ASU 2014-09 is effective for fiscal years and interim periods beginning after December 15, 2017 (as stated in ASU 2015-14, which was issued in August 2015 and defers the effective date), and is now effective for the Company's fiscal 2019. We are evaluating the effect that adopting ASU 2014-09, as clarified, will have on our consolidated results of operations, cash flows, financial position, and related disclosures.

Recent Accounting Pronouncements

Accounting Standards Adopted

In March 2016, the Financial Accounting Standards Board ("FASB") issued ASU 2016-09, which is intended to simplify certain aspects of the accounting for share-based payment award transactions, including income tax effects when awards vest or settle, repurchase of employees’ shares to satisfy statutory tax withholding obligations, an option to account for forfeitures as they occur, and classification of certain amounts on the statements of cash flows. ASU 2016-09 is effective for annual and interim reporting periods beginning after December 15, 2016. Early adoption is permitted, and we adopted it during the first quarter of fiscal 2017. We have elected to continue to estimate forfeitures expected to occur to determine the amount of compensation cost to be recognized in each period. Provisions related to income taxes have been adopted prospectively. Provisions related to the statements of cash flows have been adopted retrospectively but did not have a material impact on our statements of cash flows.

In March 2016, the FASB issued ASU 2016-07, Investments - Equity Method and Joint Ventures (Topic 323) Simplifying the Transition to the Equity Method of Accounting. ASU 2016-07 eliminates the requirement that when an investment, initially accounted for under a method other than the equity method of accounting, subsequently qualifies for use of the equity method, an investor must retrospectively apply the equity method in prior periods in which it held the investment. This requires an investor to determine the fair value of the investee’s underlying assets and liabilities retrospectively at each investment date and revise all prior periods as if the equity method had always been applied. The new guidance requires the investor to apply the equity method prospectively from the date the investment qualifies for the equity method. The investor will add the carrying value of the existing investment to the cost of the additional investment to determine the initial cost basis of the equity method investment. ASU 2016-07 was adopted by the Company effective the beginning of our third quarter of fiscal 2017 and did not have a material impact on our consolidated results of operations, cash flows, or financial position.

In July 2015, the FASB issued ASU 2015-11, Simplifying the Measurement of Inventory, which changes the measurement principle of inventory from the lower of cost or market to the lower of cost and net realizable value. The guidance will require prospective application at the beginning of our first quarter of fiscal 2018, but it permits adoption in an earlier period. ASU 2015-11 was adopted by the Company effective May 1, 2016 and did not have a material impact on our consolidated results of operations, cash flows, or financial position.

In April 2015, the FASB issued ASU 2015-05, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40) Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement. This ASU clarifies existing GAAP guidance about a customer’s accounting for fees paid in a cloud computing arrangement ("CCA") with or without a software license. Examples of CCAs include software as a service, platform as a service, infrastructure as a service, and other similar hosting arrangements. Under ASU 2015-05, fees paid by a customer in a CCA for a software license are within the scope of the internal-use software guidance if certain criteria are met. If the criteria are not met, the fees paid are accounted for as a prepaid service contract and expensed. We have historically accounted for all fees in a CCA as a prepaid service contract. We adopted ASU 2015-05 in the first quarter of fiscal 2017 when it became effective, using the prospective method. We did not pay any fees in a CCA in the current period that met the criteria to be in the scope of the internal-use software guidance, and ASU 2015-05 had no impact on our consolidated results of operations, cash flows, or financial position.

New Accounting Standards Not Yet Adopted

In January 2017, the FASB issued ASU 2017-04, Intangibles-Goodwill and Other (Topic 350), which simplifies the subsequent measurement of goodwill by removing the second step of the two-step impairment test. The amendment requires an entity to perform its annual, or interim goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. A goodwill impairment will be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. ASU 2017-04 is effective for interim and annual periods beginning after December 15, 2019, and will require adoption on a prospective basis. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. We are currently evaluating the effect that adopting this new accounting guidance will have on our consolidated results of operations, cash flows, and financial position.

In October 2016, the FASB issued ASU 2016-16, Income Taxes (Topic 740) Intra-Entity Transfers of Assets Other than Inventory, which is intended to improve the accounting for the income tax consequences of intra-entity transfers of assets other than inventory. Current U.S. GAAP prohibits the recognition of current and deferred income taxes for an intra-entity asset transfer until the asset has been sold to an outside party, which is an exception to the principle of comprehensive recognition of current and deferred income taxes in U.S. GAAP. This update eliminates the exception by requiring entities to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. ASU 2016-16 is effective for interim and annual periods beginning after December 15, 2017, with early adoption permitted. We are currently evaluating the effect that adopting this new accounting guidance will have on our consolidated financial statements and related disclosures.

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230) Classification of Certain Cash Receipts and Cash Payments, which will make eight targeted changes to how cash receipts and cash payments are presented and classified in the statements of cash flows. ASU 2016-15 is effective for interim and annual periods beginning after December 15, 2017, and will require adoption on a retrospective basis unless it is impracticable to apply, in which case we would be required to apply the amendments prospectively as of the earliest date practicable. We are currently evaluating the effect that adopting this new accounting guidance will have on our consolidated cash flows and related disclosures.

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which sets out the principles for the recognition, measurement, presentation and disclosure of leases for both parties to a contract (that is, lessees and lessors). ASU 2016-02 requires lessees to apply a dual approach, classifying leases as either finance or operating leases based on the principle of whether or not the lease is effectively a financed purchase of the leased asset by the lessee. This classification will determine whether the lease expense is recognized based on an effective interest method or on a straight-line basis over the term of the lease. A lessee is also required to record a right-of-use asset and a lease liability for all leases with a term of greater than 12 months regardless of their classification. The new standard requires lessors to account for leases using an approach that is substantially equivalent to existing guidance for sales-type leases, direct financing leases and operating leases. The new guidance is effective for interim and annual periods beginning after December 15, 2018, with early adoption permitted. We are currently evaluating the effect that adopting this new accounting guidance will have on our consolidated results of operations, cash flows, and financial position.

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers. ASU 2014-09 is a comprehensive revenue recognition model that requires a company to recognize revenue from the transfer of goods or services to customers in an amount that reflects the consideration that the entity expects to receive in exchange for those goods or services. The FASB has also issued ASUs 2016-08, 2016-10, and 2016-12 to clarify guidance with respect to principal versus agent considerations, the identification of performance obligations and licensing and certain narrow areas and adds practical expedients. ASU 2014-09 is effective for fiscal years and interim periods beginning after December 15, 2017 (as stated in ASU 2015-14, which was issued in August 2015 and defers the effective date), and is now effective for the Company's fiscal 2019. We are evaluating the effect that adopting ASU 2014-09, as clarified, will have on our consolidated results of operations, cash flows, financial position, and related disclosures.