Basis of Presentation and Significant Accounting Policies (Policies)	6 Months Ended
	Oct. 04, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of presentation	On August 8, 2019, we entered into a definitive agreement with Broadcom Inc. (Broadcom) under which Broadcom agreed to purchase certain of our Enterprise Security assets and assume certain liabilities for a purchase price of $10.7 billion (the Broadcom sale). On November 4, 2019, we completed the transaction. The divestiture of our Enterprise Security business allows us to shift our operational focus to our consumer business and represents a strategic shift in our operations. As a result, the majority of results of our Enterprise Security business were classified as discontinued operations in our Condensed Consolidated Statements of Operations and thus excluded from both continuing operations and segment results for all periods presented. Starting in the second quarter of fiscal 2020, we operate in one reportable segment. The Enterprise Security business was part of our Enterprise Security segment. Results of discontinued operations include all revenues and expenses directly derived from the Enterprise Security business, with the exception of revenues and associated costs of our ID Analytics solutions, which were formerly included in the Enterprise Security segment, and general corporate overhead which were previously allocated to the Enterprise Security segment but are not allocated to discontinued operations. These revenues and expenses are now included in continuing operations. The assets acquired and liabilities to be sold to Broadcom, as specified in the August 8, 2019 definitive agreement, were classified as discontinued operations in our Condensed Consolidated Balance Sheets, subject to changes set forth in the agreement. See Notes 3 and 18 for additional information about the divestiture of our Enterprise Security business. The accompanying unaudited Condensed Consolidated Financial Statements have been prepared in accordance with generally accepted accounting principles (GAAP) in the United States of America (U.S.) for interim financial information. In the opinion of management, the unaudited Condensed Consolidated Financial Statements contain all adjustments, consisting only of normal recurring items, except as otherwise noted, necessary for the fair presentation of our financial position, results of operations, and cash flows for the interim periods. These unaudited Condensed Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements and accompanying Notes thereto included in our Annual Report on Form 10-K for the fiscal year ended March 29, 2019. The results of operations for the six months ended October 4, 2019 are not necessarily indicative of the results expected for the entire fiscal year.
Fiscal accounting year	We have a 52/53-week fiscal year ending on the Friday closest to March 31. Unless otherwise stated, references to three and six-month periods in this report relate to fiscal periods ended October 4, 2019 and September 28, 2018. The three and six months ended October 4, 2019 consisted of 13 and 27 weeks, respectively, whereas the three and six months ended September 28, 2018 consisted of 13 and 26 weeks, respectively. Our 2020 fiscal year consists of 53 weeks and ends on April 3, 2020.
Use of estimates	Use of estimates The preparation of Condensed Consolidated Financial Statements in conformity with U.S. GAAP requires management to make estimates, judgments and assumptions that affect the amounts reported and disclosed in the financial statements and accompanying notes. Such estimates include, but are not limited to, the determination of stand-alone selling price for performance obligations, valuation of business combinations including acquired intangible assets and goodwill, loss contingencies, valuation of stock-based compensation, and the recognition and measurement of current and deferred income taxes, including the measurement of uncertain tax positions. Management determines these estimates and assumptions based on historical experience and on various other assumptions that are believed to be reasonable. Actual results could differ significantly from these estimates, and such differences may be material to the Condensed Consolidated Financial Statements.
Recently Accounting Standards	Recently adopted authoritative guidance Leases. In February 2016, the Financial Accounting Standards Board (FASB) issued new guidance on lease accounting which requires lessees to recognize assets and liabilities on their balance sheet for the rights and obligations created by operating leases and also requires disclosures designed to give users of financial statements information on the amount, timing, and uncertainty of cash flows arising from leases. Most prominent among the changes in the standard is the recognition of right-of-use (ROU) assets and lease liabilities by lessees for those leases classified as operating leases. Under the standard, disclosures are required to meet the objective of enabling users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. On March 30, 2019, the first day of our fiscal 2020, we adopted the new guidance using the alternative modified retrospective transition method under which we continue to apply the legacy lease accounting guidance, including its disclosure requirements, in comparative periods prior to fiscal 2020. In addition, we elected the package of practical expedients permitted under the transition guidance within the new standard that allowed us not to reassess (1) whether any expired or existing contracts are or contain leases, (2) lease classification for any expired or existing leases, and (3) initial direct costs for any existing leases. We currently do not have any finance leases. We combine the lease and non-lease components in determining the operating lease assets and liabilities. The adoption of the new lease accounting standard resulted in the recognition of ROU assets and lease liabilities of $182 million and $209 million, respectively, as of March 30, 2019 related to our operating leases. The adoption of the standard also resulted in elimination of deferred rent liabilities of $17 million, as of March 30, 2019, which are now recorded as a reduction of the ROU assets. The standard did not have an impact on our consolidated statements of operations or statements of cash flows. Recently issued authoritative guidance not yet adopted Credit Losses. In June 2016, the FASB issued new authoritative guidance on credit losses which changes the impairment model for most financial assets and certain other instruments. For trade receivables and other instruments, we will be required to use a new forward-looking “expected loss” model. Additionally, for available-for-sale debt securities with unrealized losses, we will measure credit losses in a manner similar to today, except that the losses will be recognized as allowances rather than reductions in the amortized cost of the securities. The standard will be effective for us in our first quarter of fiscal 2021. We are currently evaluating the impact of the adoption of this guidance on our Consolidated Financial Statements. Internal-Use Software. In August 2018, the FASB issued new guidance that clarifies the accounting for implementation costs in a cloud computing arrangement. The new guidance aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The standard will be effective for us in our first quarter of fiscal 2021, with early adoption permitted. We are currently evaluating the adoption date and the impact of the adoption of this guidance on our Consolidated Financial Statements and disclosures. Although there are several other new accounting pronouncements issued or proposed by the FASB that we have adopted or will adopt, as applicable, we do not believe any of these accounting pronouncements has had, or will have, a material impact on our consolidated financial position, operating results or disclosures.
Lessee, Leases	We determine if an arrangement is a lease at inception. We have elected to not recognize a lease liability or ROU asset for short-term leases (leases with a term of twelve months or less that do not include an option to purchase the underlying asset). Operating lease ROU assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. The interest rate we use to determine the present value of future payments is our incremental borrowing rate because the rate implicit in our leases is not readily determinable. Our incremental borrowing rate is a hypothetical rate for collateralized borrowings in economic environments where the leased asset is located based on credit rating factors. Our operating lease assets also include adjustments for prepaid lease payments, lease incentives and initial direct costs. Certain lease contracts include obligations to pay for other services, such as operations and maintenance. We elected the practical expedient whereby we record all lease components and the related minimum non-lease components as a single lease component. Cash payments made for variable lease costs are not included in the measurement of our operating lease assets and liabilities. Many of our lease terms include one or more options to renew. We do not assume renewals in our determination of the lease term unless it is reasonably certain that we will exercise that option. Lease costs for minimum lease payments for operating leases is recognized on a straight-line basis over the lease term. Our lease agreements do not contain any residual value guarantees.