Basis of Presentation and Summary of Critical Accounting Policies (Policies)	9 Months Ended
Jan. 27, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Recently Issued Accounting Pronouncements	Recent Accounting Pronouncements Accounting Standards Adopted In August 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2016-15, Statement of Cash Flows (Topic 230) Classification of Certain Cash Receipts and Cash Payments, which reduces the diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. We early adopted ASU 2016-15 during the second quarter of fiscal 2018. Adoption of ASU 2016-15 did not have a material impact on our consolidated financial statements. In November 2016, the FASB issued ASU 2016-18, Restricted Cash, which requires that the statements of cash flows explain the change during the period in the total of cash, cash equivalents, and restricted cash. Accordingly, restricted cash will be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts presented on the statements of cash flows. We early adopted ASU 2016-18 during the second quarter of fiscal 2018 and applied its provisions retrospectively. Other than the change in presentation within the statements of cash flows, the adoption of ASU 2016-18 did not have an impact on our consolidated financial statements. Accounting Standards Not Yet Adopted In February 2018, the FASB issued ASU 2018-02, Income Statement-Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the newly enacted federal corporate income tax rate under the U.S. Tax Cuts and Jobs Act. ASU 2018-02 is effective for interim and annual periods beginning after December 15, 2018, with early adoption permitted. We are currently evaluating the effect that adopting ASU 2018-02 will have on our consolidated financial statements and related disclosures. 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. We are currently evaluating the effect that adopting ASU 2017-04 will have on our consolidated financial statements and related disclosures. 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 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 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 us on April 29, 2018. We are currently evaluating the effect that adopting ASU 2016-16 will have on our consolidated financial statements and related disclosures. In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments, which provides guidance regarding the measurement and recognition of credit impairment for certain financial assets. ASU 2016-13 is effective for interim and annual periods beginning after December 15, 2019, with early adoption permitted. We are currently evaluating the effect that adopting ASU 2016-13 will have on our consolidated financial statements 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 greater than 12 months regardless of their classification. ASU 2016-02 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. ASU 2016-02 is effective for interim and annual periods beginning after December 15, 2018, with early adoption permitted. We are currently evaluating the effect that adopting ASU 2016-02 will have on our consolidated financial statements and related disclosures. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). 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, 2016-12, and 2016-20 to clarify guidance with respect to principal versus agent considerations and the identification of performance obligations and licensing, to issue guidance on certain narrow areas, and to add practical expedients. We will adopt ASU 2014-09 and related guidance under the modified retrospective method during the first quarter of fiscal 2019. The implementation team has completed its evaluation of the revenue arrangements, analyzed contracts to identify key provisions impacted by Accounting Standards Codification ("ASC") 606, assessed the applicable accounting, and reviewed existing accounting policies and internal controls. We are in the process of implementing appropriate changes to our business processes, systems and controls to support recognition and disclosure under ASC 606. As a result of the evaluation performed to date, we do not anticipate that the adoption will significantly change the timing or amount of revenue recognized, based upon our current assessment of "point in time" and "over time" revenue recognition. Therefore, we do not anticipate that the adoption of ASU 2014-09 will materially impact our consolidated results of operations and financial statements, other than the additional disclosure requirements.

Recent Accounting Pronouncements

Accounting Standards Adopted

In August 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2016-15, Statement of Cash Flows (Topic 230) Classification of Certain Cash Receipts and Cash Payments, which reduces the diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. We early adopted ASU 2016-15 during the second quarter of fiscal 2018. Adoption of ASU 2016-15 did not have a material impact on our consolidated financial statements.

In November 2016, the FASB issued ASU 2016-18, Restricted Cash, which requires that the statements of cash flows explain the change during the period in the total of cash, cash equivalents, and restricted cash. Accordingly, restricted cash will be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts presented on the statements of cash flows. We early adopted ASU 2016-18 during the second quarter of fiscal 2018 and applied its provisions retrospectively. Other than the change in presentation within the statements of cash flows, the adoption of ASU 2016-18 did not have an impact on our consolidated financial statements.

Accounting Standards Not Yet Adopted

In February 2018, the FASB issued ASU 2018-02, Income Statement-Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the newly enacted federal corporate income tax rate under the U.S. Tax Cuts and Jobs Act. ASU 2018-02 is effective for interim and annual periods beginning after December 15, 2018, with early adoption permitted. We are currently evaluating the effect that adopting ASU 2018-02 will have on our consolidated financial statements and related disclosures.

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. We are currently evaluating the effect that adopting ASU 2017-04 will have on our consolidated financial statements and related disclosures.

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 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 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 us on April 29, 2018. We are currently evaluating the effect that adopting ASU 2016-16 will have on our consolidated financial statements and related disclosures.

In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments, which provides guidance regarding the measurement and recognition of credit impairment for certain financial assets. ASU 2016-13 is effective for interim and annual periods beginning after December 15, 2019, with early adoption permitted. We are currently evaluating the effect that adopting ASU 2016-13 will have on our consolidated financial statements 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 greater than 12 months regardless of their classification. ASU 2016-02 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. ASU 2016-02 is effective for interim and annual periods beginning after December 15, 2018, with early adoption permitted. We are currently evaluating the effect that adopting ASU 2016-02 will have on our consolidated financial statements and related disclosures.

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). 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, 2016-12, and 2016-20 to clarify guidance with respect to principal versus agent considerations and the identification of performance obligations and licensing, to issue guidance on certain narrow areas, and to add practical expedients. We will adopt ASU 2014-09 and related guidance under the modified retrospective method during the first quarter of fiscal 2019. The implementation team has completed its evaluation of the revenue arrangements, analyzed contracts to identify key provisions impacted by Accounting Standards Codification ("ASC") 606, assessed the applicable accounting, and reviewed existing accounting policies and internal controls. We are in the process of implementing appropriate changes to our business processes, systems and controls to support recognition and disclosure under ASC 606. As a result of the evaluation performed to date, we do not anticipate that the adoption will significantly change the timing or amount of revenue recognized, based upon our current assessment of "point in time" and "over time" revenue recognition. Therefore, we do not anticipate that the adoption of ASU 2014-09 will materially impact our consolidated results of operations and financial statements, other than the additional disclosure requirements.