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Description of Business and Significant Accounting Policies (Policies) | 12 Months Ended
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Apr. 30, 2021
Accounting Policies [Abstract] |
Fiscal Year | Fiscal Year — Our fiscal year is reported on a 52- or 53-week year ending on the last Friday in April. An additional week is included in the first fiscal quarter approximately every six years to realign fiscal months with calendar months. Fiscal year 2021, ending on April 30, 2021 is a 53-week year, with 14 weeks included in its first quarter and 13 weeks in each subsequent quarter. Fiscal year 2020, which ended on April 24, 2020, and fiscal year 2019, which ended on April 26, 2019 were both 52-week years. Unless otherwise stated, references to particular years, quarters, months and periods refer to the Company’s fiscal years ended on the last Friday of April and the associated quarters, months and periods of those fiscal years.
Principles of Consolidation | Principles of Consolidation — The consolidated financial statements include the Company and its subsidiaries. Intercompany accounts and transactions are eliminated in consolidation.
Accounting Change | Accounting Changes In June 2016, the FASB issued an accounting standards update on the measurement of credit losses on financial instruments. The standard introduces a new model for measuring and recognizing credit losses on financial instruments, requiring financial assets measured at amortized cost basis to be presented at the net amount expected to be collected. It also requires that credit losses be recorded through an allowance for credit losses. On April 25, 2020, we adopted the standard with no material impact to our consolidated financial statements.
Use of Estimates | Use of Estimates — The preparation of the consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Such estimates include, but are not limited to, revenue recognition, reserves and allowances; inventory valuation; valuation of goodwill and intangibles; restructuring reserves; employee benefit accruals; stock-based compensation; loss contingencies; investment impairments; income taxes and fair value measurements. Actual results could differ materially from those estimates, including impacts from the COVID-19 pandemic, the anticipated effects of which have been incorporated, as applicable, into management’s estimates as of and for the year ended April 30, 2021.
Cash Equivalents | Cash Equivalents — We consider all highly liquid debt investments with original maturities of three months or less at the time of purchase to be cash equivalents.
Available-for-Sale Investments | Available-for-Sale Investments — We classify our investments in debt securities as available-for-sale investments. Debt securities primarily consist of corporate bonds, U.S. Treasury and government debt securities and certificates of deposit. These investments are primarily held in the custody of a major financial institution. A specific identification method is used to determine the cost basis of debt securities sold. These investments are recorded in the consolidated balance sheets at fair value. Unrealized gains and temporary losses, net of related taxes, are included in accumulated other comprehensive income (loss) (AOCI). Upon realization, those amounts are reclassified from AOCI to earnings. The amortization of premiums and discounts on the investments are included in our results of operations. Realized gains and losses are calculated based on the specific identification method. We classify our investments as current or noncurrent based on the nature of the investments and their availability for use in current operations.
Other-than-Temporary Impairments on Investments | Other-than-Temporary Impairments on Investments — All of our available-for-sale investments are subject to periodic impairment review. When the fair value of a debt security is less than its amortized cost, it is deemed impaired, and we assess whether the impairment is other-than-temporary. An impairment is considered other-than-temporary if (i) we have the intent to sell the security, (ii) it is more likely than not that we will be required to sell the security before recovery of the entire amortized cost basis, or (iii) we do not expect to recover the entire amortized cost basis of the security. If impairment is considered other-than-temporary based on condition (i) or (ii) described above, the entire difference between the amortized cost and the fair value of the debt security is recognized in the results of operations. If an impairment is considered other-than-temporary based on condition (iii) described above, the amount representing credit losses (defined as the difference between the present value of the cash flows expected to be collected and the amortized cost basis of the debt security) is recognized in earnings, and the amount relating to all other factors is recognized in other comprehensive income (OCI).
Inventories | Inventories — Inventories are stated at the lower of cost or net realizable value, which approximates actual cost on a first-in, first-out basis. We write down excess and obsolete inventory based on the difference between the cost of inventory and the estimated net realizable value. Net realizable value is estimated using management’s best estimate of forecasts for future demand and expectations regarding market conditions. At the point of a loss recognition, a new, lower cost basis for that inventory is established, and subsequent changes in facts or circumstances do not result in the restoration or increase in that newly established basis. In addition, we record a liability for firm, non-cancelable and unconditional purchase commitments with contract manufacturers and suppliers for quantities in excess of our future demand forecasts consistent with our valuation of excess and obsolete inventory.
Property and Equipment | Property and Equipment — Property and equipment are recorded at cost. Depreciation and amortization is computed using the straight-line method, generally over the following periods:
|  | Depreciation Life
Buildings and improvements |  | 10 to 40 years
Furniture and fixtures |  | 5 years
Computer, production, engineering and other equipment |  | 2 to 3 years
Computer software |  | 3 to 5 years
Leasehold improvements |  | Shorter of remaining lease term or useful life
Construction in progress will be depreciated over the estimated useful lives of the respective assets when they are ready for use. We capitalize interest on significant facility assets under construction and on significant software development projects.
Software Development Costs | Software Development Costs — The costs for the development of new software products and substantial enhancements to existing software products are expensed as incurred until technological feasibility has been established, at which time any additional costs would be capitalized in accordance with the accounting guidance for software. Because our current process for developing software is essentially completed concurrently with the establishment of technological feasibility, which occurs upon the completion of a working model, no costs have been capitalized for any of the periods presented.
Internal-Use Software Development Costs | Internal-Use Software Development Costs — We capitalize qualifying costs, which are incurred during the application development stage, for computer software developed or obtained for internal-use and amortize them over the software’s estimated useful life.
Business Combinations | Business Combinations — We recognize identifiable assets acquired and liabilities assumed at their acquisition date fair values. Goodwill as of the acquisition date is measured as the excess of consideration transferred over the net of the acquisition date fair values of the assets acquired and the liabilities assumed. While we use our best estimates and assumptions as a part of the purchase price allocation process to accurately value assets acquired and liabilities assumed at the acquisition date, our estimates are inherently uncertain and subject to refinement. As a result, during the measurement period, which may be up to one year from the acquisition date, we record adjustments to the assets acquired and liabilities assumed, with the corresponding offset to goodwill to the extent that we identify adjustments to the preliminary purchase price allocation. Upon the conclusion of the measurement period or final determination of the values of assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded to our consolidated statements of income.
Goodwill and Purchased Intangible Assets | Goodwill and Purchased Intangible Assets — Goodwill is recorded when the consideration paid for an acquisition exceeds the fair value of net tangible and intangible assets acquired. Purchased intangible assets with finite lives are generally amortized on a straight-line basis over their economic lives of three to five years for developed technology, two to five years for customer contracts/relationships, two to three years for covenants not to compete and two to five years for trademarks and trade names as we believe this method most closely reflects the pattern in which the economic benefits of the assets will be consumed. In-process research and development is accounted for as an indefinite lived intangible asset and is assessed for potential impairment annually until development is complete or when events or circumstances indicate that their carrying amounts might be impaired. Upon completion of development, in-process research and development is accounted for as a finite-lived intangible asset. The carrying value of goodwill is tested for impairment on an annual basis in the fourth quarter of our fiscal year, or more frequently if we believe indicators of impairment exist. Triggering events for impairment reviews may be indicators such as adverse industry or economic trends, restructuring actions, lower projections of profitability, or a sustained decline in our market capitalization. For the purpose of impairment testing, we have a single reporting unit. The performance of the quantitative impairment test requires comparing the fair value of our reporting unit to its carrying amount, including goodwill. The fair value of our reporting unit is based on our entity level market capitalization, as determined through quoted market prices. An impairment exists if the fair value of our reporting unit is lower than its carrying amount. The impairment loss is measured based on the amount by which the carrying amount of our reporting unit exceeds its fair value, with the recognized loss not to exceed the total amount of goodwill. T he fair value of our reporting unit ha s substantially exceeded its carrying amount in all periods presented.
Impairment of Long-Lived Assets | Impairment of Long-Lived Assets — We review the carrying values of long-lived assets whenever events and circumstances, such as reductions in demand, lower projections of profitability, significant changes in the manner of our use of acquired assets, or significant negative industry or economic trends, indicate that the net book value of an asset may not be recovered through expected future cash flows from its use and eventual disposition. If this review indicates that there is an impairment, the impaired asset is written down to its fair value, which is typically calculated using: (i) quoted market prices and/or (ii) expected future cash flows utilizing a discount rate. Our estimates regarding future anticipated cash flows, the remaining economic life of the products and technologies, or both, may differ from those used to assess the recoverability of assets. In that event, impairment charges or shortened useful lives of certain long-lived assets may be required, resulting in charges to our consolidated statements of income when such determinations are made.
Derivative Instruments | Derivative Instruments — Our derivative instruments, which are carried at fair value in our consolidated balance sheets, consist of foreign currency exchange contracts as described below: Balance Sheet Hedges — We utilize foreign currency exchange forward and option contracts to hedge against the short-term impact of foreign currency exchange rate fluctuations related to certain foreign currency denominated monetary assets and liabilities, primarily intercompany receivables and payables. These derivative instruments are not designated as hedging instruments and do not subject us to material balance sheet risk due to exchange rate movements because the gains and losses on these contracts are intended to offset the gains and losses in the underlying foreign currency denominated monetary assets and liabilities being hedged, and the net amount is included in earnings. Cash Flow Hedges — We utilize foreign currency exchange forward contracts to hedge foreign currency exchange exposures related to forecasted sales transactions denominated in certain foreign currencies. These derivative instruments are designated and qualify as cash flow hedges and, in general, closely match the underlying forecasted transactions in duration. The effective portion of the contracts’ gains and losses resulting from changes in fair value is recorded in AOCI until the forecasted transaction is recognized in the consolidated statements of income. When the forecasted transactions occur, we reclassify the related gains or losses on the cash flow hedges into net revenues. If the underlying forecasted transactions do not occur, or it becomes probable that they will not occur within the defined hedge period, the gains or losses on the related cash flow hedges are reclassified from AOCI and recognized immediately in earnings. We measure the effectiveness of hedges of forecasted transactions on a monthly basis by comparing the fair values of the designated foreign currency exchange forward purchase contracts with the fair values of the forecasted transactions. Factors that could have an impact on the effectiveness of our hedging programs include the accuracy of forecasts and the volatility of foreign currency markets. These programs reduce, but do not entirely eliminate, the impact of currency exchange movements. Currently, we do not enter into any foreign currency exchange forward contracts to hedge exposures related to firm commitments. Cash flows from our derivative programs are included under operating activities in the consolidated statements of cash flows.
Revenue Recognition | Revenue Recognition — We recognize revenue by applying the following five step approach.
| • | Identification of the contract, or contracts, with a customer — A contract with a customer is within the scope of ASC 606 when it meets all the following criteria:
| - | It is enforceable
| - | It defines each party’s rights
| - | It identifies the payment terms
| - | It has commercial substance, and
| - | We determine that collection of substantially all consideration for goods or services that will be transferred is probable based on the customer’s intent and ability to pay
| • | Identification of the performance obligations in the contract — Performance obligations promised in a contract are identified based on the goods or services (or a bundle of goods and services) that will be transferred to the customer that are distinct.
| • | Determination of the transaction price — The transaction price is determined based on the consideration to which we will be entitled in exchange for transferring goods or services to the customer.
| • | Allocation of the transaction price to the performance obligations in the contract — Contracts that contain multiple performance obligations require an allocation of the transaction price to each performance obligation.
| • | Recognition of revenue when, or as, we satisfy a performance obligation — We satisfy performance obligations either over time or at a point in time.
Customarily we have a purchase order from or executed contract with our customers that establishes the goods and services to be transferred and the consideration to be received. We combine two or more contracts entered into at or near the same time with the same customer as a single contract if the contracts are negotiated as one package with a single commercial objective, if the amount of consideration to be paid on one contract depends on the price or performance of the other contract or if the goods and services promised in each of the contracts are a single performance obligation. Our contracts with customers may include hardware systems, software licenses, software support, hardware support and other services. Software support contracts entitle our customers to receive unspecified upgrades and enhancements on a when-and-if-available basis, and patch releases. Hardware support services include contracts for extended warranty and technical support with minimum response times. Other services include professional services and customer education and training services. We identify performance obligations in our contracts to be those goods and services that are distinct. A good or service is distinct where the customer can benefit from the good or service either on its own or together with other resources that are readily available from third parties or from us, and is distinct in the context of the contract, where the transfer of the good or service is separately identifiable from other promises in the contract. If a contract includes multiple promised goods or services, we apply judgment to determine whether promised goods or services are distinct. If they are not, we combine the goods and services until we have a distinct performance obligation. A configured storage system inclusive of the operating system (OS) software essential to its functionality is considered a single performance obligation, while optional add-on software is a separate performance obligation. In general, hardware support, software support, and different types of professional services are each separate performance obligations. In certain instances, we enter into enterprise license agreements (ELAs) with our customers which transfer to them the right to deploy an unlimited or capped number of OS or optional add-on software licenses and obligate us to provide software support through the ELA term. In general, we treat the software license component and software support component of ELAs as separate performance obligations. We determine the transaction price of our contracts with customers based on the consideration to which we will be entitled in exchange for transferring goods or services. Consideration promised may include fixed amounts, variable amounts or both. We sell professional services either on a time and materials basis or under fixed price projects. We evaluate variable consideration in arrangements with contract terms such as rights of return, potential penalties and acceptance clauses. We generally use the expected value method, primarily relying on our history, to estimate variable consideration. However, when we believe it to provide a better estimate, we use the most likely amount method. In either case, we consider variable consideration only to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur. Reassessments of our variable consideration may occur as historical information changes. Transaction prices are also adjusted for the effects of time value of money if the timing of payments provides either the customer or us a significant benefit of financing. Contracts that contain multiple performance obligations require an allocation of the transaction price to each performance obligation on a relative standalone selling price basis. We determine standalone selling price based on the price at which the performance obligation is sold separately. If the standalone selling price is not observable through past transactions, we estimate the standalone selling price by maximizing the use of observable inputs including pricing strategy, market data, internally-approved pricing guidelines related to the performance obligations and other observable inputs. We regularly review standalone selling prices and maintain internal controls over the establishment and updates of these estimates. Variable consideration is also allocated to the performance obligations. If the terms of variable consideration relate to one performance obligation, it is entirely allocated to that obligation. Otherwise, it is allocated to all the performance obligations in the contract. We typically recognize revenue at a point in time upon the transfer of goods to a customer. Products we transfer at a point in time include our configured hardware systems, OS software licenses, optional add-on software licenses and add-on hardware. Services are typically transferred over time and revenue is recognized based on an appropriate method for measuring our progress toward completion of the performance obligation. Our stand-ready services, including both hardware and software support, are transferred ratably over the period of the contract. For other services such as our fixed professional services contracts, we use an input method to determine the percentage of completion. That is, we estimate the effort to date versus the expected effort required over the life of the contract.
Deferred Commissions | Deferred Commissions — We capitalize sales commissions that are incremental direct costs of obtaining customer contracts for which revenue is not immediately recognized and classify them as current or non-current based on the terms of the related contracts. Capitalized commissions are amortized based on the transfer of goods or services to which they relate, typically over one to three years, and are also periodically reviewed for impairment. Amortization expense is recorded to sales and marketing expense in our consolidated statements of income.
Leases | Leases — We determine if an arrangement is or contains a lease at inception, and we classify leases as operating or finance leases at commencement. In our consolidated balance sheets, operating lease right-of-use (ROU) assets are included in other non-current assets, while finance lease ROU assets are included in property and equipment, net. Lease liabilities for both types of leases are included in accrued expenses and other long-term liabilities. ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments over that term. Operating and finance lease ROU assets and liabilities are recognized at commencement based on the present value of lease payments over the lease term. ROU assets also include any lease payments made prior to lease commencement and exclude lease incentives. The lease term is the noncancelable period of the lease and includes options to extend or terminate the lease when it is reasonably certain that an option will be exercised. As the rate implicit in our leases is typically not readily determinable, in computing the present value of lease payments we generally use our incremental borrowing rate based on information available at the commencement date. Variable lease payments not dependent on an index or rate are expensed as incurred and not included within the calculation of ROU assets and lease liabilities. Lease expense for operating lease payments is recognized on a straight-line basis over the lease term. We do not separate non-lease components from lease components for any class of leases, and we do not recognize ROU assets and lease liabilities for leases with a lease term of twelve months or less.
Foreign Currency Translation | Foreign Currency Translation — For international subsidiaries whose functional currency is the local currency, gains and losses resulting from translation of these foreign currency financial statements into U.S. dollars are recorded in AOCI. For international subsidiaries where the functional currency is the U.S. dollar, gains and losses resulting from the process of remeasuring foreign currency financial statements into U.S. dollars are included in other (expense) income, net.
Benefit Plans | Benefit Plans — We record actuarial gains and losses associated with defined benefit plans within AOCI and amortize net gains or losses in excess of 10 percent of the greater of the market value of plan assets or the plans' projected benefit obligation on a straight-line basis over the remaining estimated service life of plan participants. The measurement date for all defined benefit plans is our fiscal year end.
Stock-Based Compensation | Stock-Based Compensation — We measure and recognize stock-based compensation for all stock-based awards, including employee stock options, restricted stock units (RSUs), including time-based RSUs and performance-based RSUs (PBRSUs), and rights to purchase shares under our employee stock purchase plan (ESPP), based on their estimated fair value, and recognize the costs in our financial statements using the single option straight-line approach over the requisite service period for the entire award. The fair value of employee time-based RSUs, and PBRSUs that include a performance condition, is equal to the market value of our common stock on the grant date of the award, less the present value of expected dividends during the vesting period, discounted at a risk-free interest rate. The fair value of PBRSUs that include a market condition is measured using a Monte Carlo simulation model on the date of grant. The fair value of time-based RSUs, and PBRSUs that include a market condition, is not remeasured as a result of subsequent stock price fluctuations. When there is a change in management’s estimate of expected achievement relative to the performance target for PBRSUs that include a performance condition, such as our achievement against a cumulative Adjusted Operating Income target, the change in estimate results in the recognition of a cumulative adjustment of stock-based compensation expense. Our expected term assumption is based primarily on historical exercise and post-vesting forfeiture experience. Our stock price volatility assumption is based on a combination of our historical and implied volatility. The risk-free interest rates are based upon United States (U.S.) Treasury bills with equivalent expected terms, and the expected dividends are based on our history and expected dividend payouts. We account for forfeitures of stock-based awards as they occur.
Income Taxes | Income Taxes — Deferred income tax assets and liabilities are provided for temporary differences that will result in tax deductions or income in future periods, as well as the future benefit of tax credit carryforwards. A valuation allowance reduces tax assets to their estimated realizable value. We recognize the tax liability for uncertain income tax positions on the income tax return based on the two-step process prescribed in the interpretation. The first step is to determine whether it is more likely than not that each income tax position would be sustained upon audit. The second step is to estimate and measure the tax benefit as the amount that has a greater than 50% likelihood of being realized upon ultimate settlement with the tax authority. Estimating these amounts requires us to determine the probability of various possible outcomes. We evaluate these uncertain tax positions on a quarterly basis. We recognize interest and penalties related to unrecognized tax benefits within the provision for income taxes line on the accompanying consolidated statements of income.
Net Income per Share | Net Income per Share — Basic net income per share is computed by dividing income available to common stockholders by the weighted-average number of common shares outstanding. Diluted net income per share is computed giving effect to the weighted-average number of dilutive potential shares that were outstanding during the period using the treasury stock method. Potential dilutive common shares consist primarily of outstanding stock options, shares to be purchased under our employee stock purchase plan and unvested RSUs.
Treasury Stock | Treasury Stock — We account for treasury stock under the cost method. Upon the retirement of treasury stock, we allocate the value of treasury shares between common stock, additional paid-in capital and retained earnings.
Accounting Standards on Transfers of Financial Assets | We account for the sales of these receivables as “true sales” as defined in the accounting standards on transfers of financial assets, as we are considered to have surrendered control of these financing receivables. Provided all other revenue recognition criteria have been met, we recognize product revenues for these arrangements, net of any payment discounts from financing transactions, upon product acceptance. We sold $102 million, $59 million and $87 million of receivables during fiscal 2021, 2020 and 2019, respectively.
Debt | The portion of the financial arrangement that represents unearned services revenue is included in deferred revenue and financed unearned services revenue in our consolidated balance sheets.

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