Summary of Significant Accounting Policies, by Policy (Policies)	12 Months Ended
Apr. 26, 2013
Accounting Policies [Abstract]
Nature of Operations	Nature of Operations Medtronic, Inc. (Medtronic or the Company) is the global leader in medical technology – alleviating pain, restoring health, and extending life for millions of people around the world. The Company provides innovative products and therapies for use by medical professionals to meet the health care needs of their patients. Primary products include those for cardiac rhythm disorders, cardiovascular disease, neurological disorders, spinal conditions and musculoskeletal trauma, urological and digestive disorders, diabetes, and ear, nose, and throat conditions. The Company is headquartered in Minneapolis, Minnesota, and markets its products primarily through a direct sales force in the United States (U.S.) and a combination of direct sales representatives and independent distributors in international markets. The primary markets for products are the U.S., Western Europe, Japan, and emerging markets.
Principles of Consolidation	Principles of Consolidation The consolidated financial statements include the accounts of Medtronic, Inc., and all of its subsidiaries. All significant intercompany transactions and accounts have been eliminated. U.S. generally accepted accounting principles (U.S. GAAP) are applied when determining whether an entity is subject to consolidation. Beginning in the third quarter of fiscal year 2012, the results of operations, assets, and liabilities of the Physio-Control business, which were previously presented as a component of the Cardiac and Vascular Group operating segment, are classified as discontinued operations. All information in the following notes to the consolidated financial statements includes only results from continuing operations (excluding Physio-Control) for all periods presented, unless otherwise noted. For further information regarding discontinued operations, see Note 16.
Fiscal Year-End	Fiscal Year-End The Company utilizes a 52/53-week fiscal year, ending the last Friday in April. The Company’s fiscal years 2013, 2012, and 2011 ended on April 26, 2013, April 27, 2012, and April 29, 2011, respectively, all of which were 52-week years.
Reclassification	Reclassifications Certain prior period amounts have been reclassified to conform to the current year presentation.
Use of Estimates	Use of Estimates The preparation of the financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts in the financial statements and accompanying notes. Actual results could differ materially from those estimates.
Cash Equivalents	Cash Equivalents The Company considers highly liquid investments with maturities of three months or less from the date of purchase to be cash equivalents. These investments are carried at cost, which approximates fair value.
Investments	Investments Investments in marketable equity securities and debt securities are classified and accounted for as available-for-sale at April 26, 2013 and April 27, 2012. Debt securities include corporate debt securities, U.S. and foreign government and agency securities, certificates of deposit, mortgage-backed securities, other asset-backed securities, and auction rate securities. These investments are recorded at fair value in the consolidated balance sheets. The change in fair value for available-for-sale securities is recorded, net of taxes, as a component of accumulated other comprehensive loss on the consolidated balance sheets. Investments in securities that are classified and accounted for as trading securities at April 26, 2013 and April 27, 2012 include exchange-traded funds and are recorded at fair value on the consolidated balance sheets. The Company’s trading securities seek to offset changes in liabilities related to equity and other market risks of certain deferred compensation arrangements. The change in fair value for trading securities is recorded as a component of interest expense, net on the consolidated statements of earnings. Management determines the appropriate classification of its investments in debt and equity securities at the time of purchase and reevaluates such determinations at each balance sheet date. Effective April 26, 2013, the Company changed the method of classification of certain investments previously classified as long-term investments to current. The prior period balances have been reclassified to conform to the current year presentation. This new method classifies these securities as current or long-term based on the nature of the securities and availability for use in current operations while the prior classification was based on the maturities of the investments. The Company believes this method is preferable because it is consistent with how the Company manages its capital structure and liquidity. In conjunction with this change in classification of investments, the Company changed the classification of deferred taxes related to the unrealized gains and losses on investments previously classified as long-term from non-current assets to current assets. Certain of the Company’s investments in equity and other securities are long-term, strategic investments in companies that are in varied stages of development. The Company accounts for these investments under the cost or the equity method of accounting, as appropriate. These investments are included in other assets on the consolidated balance sheets. The valuation of equity and other securities accounted for under the cost method considers all available financial information related to the investee, including valuations based on recent third-party equity investments in the investee. If an unrealized loss for any investment is considered to be other-than-temporary, the loss will be recognized in the consolidated statements of earnings in the period the determination is made. Equity securities accounted for under the equity method are initially recorded at the amount of the Company’s investment and adjusted each period for the Company’s share of the investee’s income or loss and dividends paid. Equity securities accounted for under both the cost and equity methods are reviewed quarterly for changes in circumstance or the occurrence of events that suggest the Company’s investment may not be recoverable. See Note 5 for discussion of the gains and losses recognized on equity and other securities.
Accounts Receivable	Accounts Receivable The Company grants credit to customers in the normal course of business, but generally does not require collateral or any other security to support its receivables. The Company maintains an allowance for doubtful accounts for potential credit losses. Uncollectible accounts are written off against the allowance when it is deemed that a customer account is uncollectible.
Inventories	Inventories Inventories are stated at the lower of cost or market, with cost determined on a first-in, first-out basis.
Property, Plant and Equipment	Property, Plant, and Equipment Property, plant, and equipment is stated at cost. Additions and improvements that extend the lives of the assets are capitalized while expenditures for repairs and maintenance are expensed as incurred. Depreciation is provided using the straight-line method over the estimated useful lives of the various assets
Goodwill	Goodwill Goodwill is the excess of the purchase price of an acquired business over the amounts assigned to assets acquired and liabilities assumed in a business combination. In accordance with U.S. GAAP, goodwill is not amortized. Goodwill is tested for impairment annually or whenever an event occurs or circumstances change that would indicate that the carrying amount may be impaired. Impairment testing for goodwill is done at a reporting unit level. An impairment loss is recognized when the carrying amount of the reporting unit’s net assets exceed the estimated fair value of the reporting unit. The estimated fair value is determined using a discounted future cash flow analysis.
Other Intangible Assets	Other Intangible Assets Other intangible assets include patents, trademarks, purchased technology, and in-process research and development (IPR&D) (since April 25, 2009). Intangible assets with a definite life are amortized on a straight-line or accelerated basis, as appropriate, with estimated useful lives ranging from three to 20 years. Intangible assets with a definite life are tested for impairment whenever events or changes in circumstances indicate that the carrying amount of an intangible asset (asset group) may not be recoverable. Indefinite-lived intangible assets are tested for impairment annually or whenever events or changes in circumstances indicate that the carrying amount of an intangible asset (asset group) may not be recoverable. Impairment is calculated as the excess of the asset’s carrying value over its fair value. Fair value is generally determined using a discounted future cash flow analysis.
IPR&D	IPR&D When the Company acquires another entity, the purchase price is allocated, as applicable, between IPR&D, other identifiable intangible assets, and net tangible assets, with the remainder recognized as goodwill. During fiscal year 2010, the Company adopted authoritative guidance related to business combinations. Under this guidance, IPR&D is capitalized. Prior to the adoption of this guidance, IPR&D was immediately expensed. The adoption of the authoritative guidance did not change the requirement to expense IPR&D immediately with respect to asset acquisitions. These IPR&D charges are included within acquisition-related items in the Company’s consolidated statements of earnings. IPR&D has an indefinite life and is not amortized until completion and development of the project, at which time the IPR&D becomes an amortizable asset. If the related project is not completed in a timely manner or the project is terminated or abandoned, the Company may have an impairment related to the IPR&D, calculated as the excess of the asset’s carrying value over its fair value. The Company’s policy defines IPR&D as the value assigned to those projects for which the related products have not received regulatory approval and have no alternative future use. Determining the portion of the purchase price allocated to IPR&D requires the Company to make significant estimates. The amount of the purchase price allocated to IPR&D is determined by estimating the future cash flows of each project or technology and discounting the net cash flows back to their present values. The discount rate used is determined at the time of measurement in accordance with accepted valuation methods. These methodologies include consideration of the risk of the project not achieving commercial feasibility. At the time of acquisition, the Company expects that all acquired IPR&D will reach technological feasibility, but there can be no assurance that the commercial viability of these products will actually be achieved. The nature of the efforts to develop the acquired technologies into commercially viable products consists principally of planning, designing, and conducting clinical trials necessary to obtain regulatory approvals. The risks associated with achieving commercialization include, but are not limited to, delay or failure to obtain regulatory approvals to conduct clinical trials, delay or failure to obtain required market clearances, or delays or issues with patent issuance, or validity and litigation. If commercial viability were not achieved, the Company would likely look to other alternatives to provide these therapies.
Contingent Consideration	Contingent Consideration During fiscal year 2010, as mentioned above, the Company adopted authoritative guidance related to business combinations. Under this guidance, the Company must recognize contingent purchase price consideration at fair value at the acquisition date. Prior to the adoption of this guidance, contingent consideration was not included on the balance sheet and was recorded as incurred. The acquisition date fair value is measured based on the consideration expected to be transferred (probability-weighted), discounted back to present value. The discount rate used is determined at the time of measurement in accordance with accepted valuation methods. The fair value of the contingent milestone consideration is remeasured at the estimated fair value at each reporting period with the change in fair value recognized as income or expense within acquisition-related items in the Company’s consolidated statements of earnings. Therefore, any changes in the fair value will impact the Company’s earnings in such reporting period thereby resulting in potential variability in the Company’s earnings until contingencies are resolved.
Warranty Obligation	Warranty Obligation The Company offers a warranty on various products. The Company estimates the costs that may be incurred under its warranties and records a liability in the amount of such costs at the time the product is sold. Factors that affect the Company’s warranty liability include the number of units sold, historical and anticipated rates of warranty claims, and cost per claim. The Company periodically assesses the adequacy of its recorded warranty liabilities and adjusts the amounts as necessary. The amount of the reserve recorded is equal to the net costs to repair or otherwise satisfy the claim. The Company includes the warranty obligation in other accrued expenses and other long-term liabilities on the Company’s consolidated balance sheets. The Company includes the covered costs associated with field actions, if any, in cost of products sold in the Company’s consolidated statements of earnings.
Self-Insurance	Self-Insurance It is the Company’s policy to self-insure the vast majority of its insurable risks including medical and dental costs, disability coverage, physical loss to property, business interruptions, workers’ compensation, comprehensive general, and product liability. Insurance coverage is obtained for those risks required to be insured by law or contract. A provision for losses under the self-insured program is recorded and revised quarterly. The Company uses claims data and historical experience, as applicable, to estimate liabilities associated with the exposures that the Company has self-insured. Based on historical loss trends, the Company believes that its self-insurance program accruals are adequate to cover future losses. Historical trends, however, may not be indicative of future losses. These losses could have a material adverse impact on the Company’s consolidated financial statements.
Retirement Benefit Plan Assumptions	Retirement Benefit Plan Assumptions The Company sponsors various retirement benefit plans, including defined benefit pension plans (pension benefits), post-retirement medical plans (post-retirement benefits), defined contribution savings plans, and termination indemnity plans, covering substantially all U.S. employees and many employees outside the U.S. Pension benefit costs include assumptions for the discount rate, retirement age, compensation rate increases, and the expected return on plan assets. Post-retirement medical benefit costs include assumptions for the discount rate, retirement age, expected return on plan assets, and health care cost trend rate assumptions. The Company evaluates the discount rate, retirement age, compensation rate increases, expected return on plan assets, and health care cost trend rates of its pension benefits and post-retirement benefits annually. In evaluating these assumptions, many factors are considered, including an evaluation of assumptions made by other companies, historical assumptions compared to actual results, current market conditions, asset allocations, and the views of leading financial advisors and economists. In evaluating the expected retirement age assumption, the Company considers the retirement ages of past employees eligible for pension and medical benefits together with expectations of future retirement ages. Refer to Note 14 for additional information regarding the Company’s retirement benefit plans.
Revenue Recognition	Revenue Recognition The Company sells its products primarily through a direct sales force in the U.S. and a combination of direct sales representatives and independent distributors in international markets. The Company recognizes revenue when title to the goods and risk of loss transfers to customers, provided there are no material remaining performance obligations required of the Company or any matters requiring customer acceptance. In cases where the Company utilizes distributors or ships product directly to the end user, it recognizes revenue upon shipment provided all revenue recognition criteria have been met. A portion of the Company’s revenue is generated from inventory maintained at hospitals or with field representatives. For these products, revenue is recognized at the time the product has been used or implanted. For multiple-element arrangements, the Company allocates arrangement consideration to the deliverables by use of the relative selling price method. The selling price used for each deliverable is based on vendor–specific objective evidence (VSOE) if available, third–party evidence (TPE) if VSOE is not available, or best estimated selling price (BESP) if neither VSOE nor TPE is available. BESP is determined in a manner consistent with that used to establish the price to sell the deliverable on a standalone basis. The Company records estimated sales returns, discounts, and rebates as a reduction of net sales in the same period revenue is recognized.
Research and Development	Research and Development Research and development costs are expensed when incurred. Research and development costs include costs of all basic research activities as well as other research, engineering, and technical effort required to develop a new product or service or make significant improvement to an existing product or manufacturing process. Research and development costs also include pre-approval regulatory and clinical trial expenses.
Other Expense, Net	Other Expense, Net Other expense, net includes royalty income and expense, realized equity security gains and losses, realized foreign currency transaction and derivative gains and losses, impairment charges on equity securities, the Puerto Rico excise tax, and the U.S. medical device excise tax.
Stock-Based Compensation	Stock-Based Compensation The Company’s compensation programs include share-based payments. All awards under share-based payment programs are accounted for at fair value and these fair values are generally amortized on a straight-line basis over the vesting terms into cost of products sold, research and development expense, and selling, general, and administrative expense in the consolidated statements of earnings, as appropriate. Refer to Note 12 for additional information.
Foreign Currency Translation	Foreign Currency Translation Assets and liabilities of non-U.S. functional currency entities are translated to U.S. dollars at period-end exchange rates, and the resulting gains and losses arising from the translation of those net assets are recorded as a cumulative translation adjustment, a component of accumulated other comprehensive loss on the consolidated balance sheets. Elements of the consolidated statements of earnings are translated at average currency exchange rates in effect during the period and foreign currency transaction gains and losses are included in other expense, net in the consolidated statements of earnings.
Comprehensive Income and Accumulated Other Comprehensive Loss	Comprehensive Income and Accumulated Other Comprehensive Loss In addition to net earnings, comprehensive income includes changes in currency exchange rate translation adjustments, unrealized gains and losses on currency exchange rate derivative contracts and interest rate derivative instruments qualifying and designated as cash flow hedges, net changes in retirement obligation funded status, and unrealized gains and losses on available-for-sale marketable securities. Taxes are not provided on cumulative translation adjustments as substantially all translation adjustments relate to earnings that are intended to be indefinitely reinvested outside the U.S.
Derivatives	Derivatives U.S. GAAP requires companies to recognize all derivatives as assets and liabilities on the balance sheet and to measure the instruments at fair value through earnings unless the derivative qualifies as a hedge. If the derivative is a hedge, depending on the nature of the hedge and hedge effectiveness, changes in the fair value of the derivative will either be recognized currently through earnings or recorded in other comprehensive income (loss) until the hedged item is recognized in earnings upon settlement/termination. The changes in the fair value of the derivative are intended to offset the change in fair value of the hedged asset, liability, or probable commitment. The Company evaluates hedge effectiveness at inception and on an ongoing basis. If a derivative is no longer expected to be highly effective, hedge accounting is discontinued. Hedge ineffectiveness, if any, is recorded in earnings. The Company uses operational and economic hedges, as well as currency exchange rate derivative contracts and interest rate derivative instruments, to manage the impact of currency exchange and interest rate changes on earnings and cash flows. In order to minimize earnings and cash flow volatility resulting from currency exchange rate changes, the Company enters into derivative instruments, principally forward currency exchange rate contracts. These contracts are designed to hedge anticipated foreign currency transactions and changes in the value of specific assets and liabilities. At inception of the forward contract, the derivative is designated as either a freestanding derivative or cash flow hedge. The primary currencies of the derivative instruments are the Euro and the Japanese Yen. The Company does not enter into currency exchange rate derivative contracts for speculative purposes. All derivative instruments are recorded at fair value on the consolidated balance sheets, as a component of prepaid expenses and other current assets, other assets, other accrued expenses, or other long-term liabilities depending upon the gain or loss position of the contract and contract maturity date. Forward currency exchange rate contracts designated as cash flow hedges are designed to hedge the variability of cash flows associated with forecasted transactions denominated in a foreign currency that will take place in the future. Changes in value of derivatives designated as cash flow hedges are recorded in accumulated other comprehensive loss on the consolidated balance sheets until earnings are affected by the variability of the underlying cash flows. At that time, the applicable amount of gain or loss from the derivative instrument that is deferred in shareholders’ equity is reclassified into earnings and is included in other expense, net or cost of products sold in the consolidated statements of earnings, depending on the underlying transaction that is being hedged. The Company uses forward currency exchange rate contracts to offset its exposure to the change in value of specific foreign currency denominated assets and liabilities. These forward currency exchange rate contracts are not designated as hedges, and therefore, changes in the value of these freestanding derivatives are recognized currently in earnings, thereby offsetting the current earnings effect of the related change in value of foreign currency denominated assets and liabilities. The Company uses forward starting interest rate derivative instruments to manage the exposure to interest rate volatility with regard to future issuances of fixed-rate debt. These derivative instruments are designated as cash flow hedges under U.S. GAAP. The effective portion of the gain or loss on the derivative is reported as a component of accumulated other comprehensive loss and beginning in the period or periods in which the planned debt issuance occurs, the gain or loss is then reclassified into interest expense, net over the term of the related debt. The Company uses interest rate derivative instruments to manage its exposure to interest rate movements and to reduce borrowing costs by converting fixed-rate debt into floating-rate debt. The objective of the instruments is to more effectively manage the Company’s borrowing costs and interest rate risk. These derivative instruments are designated as fair value hedges under U.S. GAAP. Changes in the fair value of the derivative instrument are recorded in interest expense, net, and are offset by changes in the fair value on the underlying debt instrument. Interest expense, net includes interest payments made or received under interest rate derivative instruments. In addition, the Company has collateral credit agreements with its primary derivative counterparties. Under these agreements, either party is required to post eligible collateral when the market value of transactions covered by the agreement exceeds specific thresholds, thus limiting credit exposure for both parties
Earnings Per Share	Earnings Per Share Basic earnings per share is computed based on the weighted average number of common shares outstanding. Diluted earnings per share is computed based on the weighted average number of common shares outstanding, increased by the number of additional shares that would have been outstanding had the potentially dilutive common shares been issued and reduced by the number of shares the Company could have repurchased from the proceeds from issuance of the potentially dilutive shares. Potentially dilutive shares of common stock include stock options and other stock-based awards granted under stock-based compensation plans and shares committed to be purchased under the employee stock purchase plan.
New Accounting Standards	New Accounting Standards Recently Adopted In June 2011, and as subsequently amended in December 2011, the Financial Accounting Standards Board (FASB) issued final guidance on the presentation of comprehensive income. Under the newly issued guidance, net income and comprehensive income may only be presented either as one continuous statement or in two separate, but consecutive statements. The Company retrospectively adopted this guidance in the first quarter of fiscal year 2013, with comprehensive income shown as a separate statement immediately following the consolidated statements of earnings. Since the new guidance only relates to presentation, its adoption did not impact the Company’s financial position, results of operations, or cash flows. In September 2011, the FASB updated the accounting guidance related to annual and interim goodwill impairment testing. The updated accounting guidance allows entities to first assess qualitative factors before performing a quantitative assessment of the fair value of a reporting unit. If it is determined on the basis of qualitative factors that the fair value of the reporting unit is more likely than not less than the carrying amount, the existing quantitative impairment test is required. Otherwise, no further impairment testing is required. The Company adopted this guidance in the first quarter of fiscal year 2013. The adoption did not have a material impact on the Company’s consolidated financial statements. Not Yet Adopted In December 2011 and January 2013, the FASB issued new accounting guidance related to disclosures on offsetting assets and liabilities on the balance sheet. This newly issued accounting standard requires an entity to disclose both gross and net information about instruments and transactions eligible for offset in the balance sheet as well as instruments and transactions executed under a master netting or similar arrangement and was issued to enable users of financial statements to understand the effects or potential effects of those arrangements on its financial position. This accounting guidance is required to be applied retrospectively and is effective for the Company beginning in the first quarter of fiscal year 2014. Since the accounting guidance only impacts disclosure requirements, its adoption will not have a material impact on the Company’s consolidated financial statements. In July 2012, the FASB updated the accounting guidance related to annual and interim indefinite-lived intangible asset impairment testing. The updated accounting guidance allows entities to first assess qualitative factors before performing a quantitative assessment of the fair value of indefinite-lived intangible assets. If it is determined on the basis of qualitative factors that the fair value of indefinite-lived intangible assets is more likely than not less than the carrying amount, the existing quantitative impairment test is required. Otherwise, no further impairment testing is required. The Company will adopt this accounting guidance in the first quarter of fiscal year 2014 and does not expect it to have a material impact on the Company’s consolidated financial statements. In February 2013, the FASB expanded the disclosure requirements with respect to changes in accumulated other comprehensive income (AOCI). Under this new guidance, companies will be required to disclose the amount of income (or loss) reclassified out of AOCI to each respective line item on the statements of earnings where net income is presented. The guidance allows companies to elect whether to disclose the reclassification either in the notes to the financial statements or parenthetically on the face of the financial statements. This update is effective for the Company beginning in the first quarter of fiscal year 2014. Since the accounting guidance only impacts disclosure requirements, its adoption will not have a material impact on the Company’s consolidated financial statements. In March 2013, the FASB issued amended guidance on a parent company's accounting for the cumulative translation adjustment (CTA) recorded in AOCI associated with a foreign entity. The amendment requires a parent to release into net income the CTA related to its investment in a foreign entity when it either sells a part or all of its investment in, or no longer holds a controlling financial interest in a subsidiary or group of assets within a foreign entity. This accounting guidance is effective for the Company beginning in the first quarter of fiscal year 2015, with early adoption permitted. Subsequent to adoption, this amended guidance would impact the Company's financial position and results of operations prospectively in the instance of an event or transaction described above.

Summary of Significant Accounting Policies, by Policy (Policies)

12 Months Ended

Apr. 26, 2013

Nature of Operations Medtronic, Inc. (Medtronic or the Company) is the global leader in medical technology – alleviating pain, restoring health, and extending life for millions of people around the world. The Company provides innovative products and therapies for use by medical professionals to meet the health care needs of their patients. Primary products include those for cardiac rhythm disorders, cardiovascular disease, neurological disorders, spinal conditions and musculoskeletal trauma, urological and digestive disorders, diabetes, and ear, nose, and throat conditions.

The Company is headquartered in Minneapolis, Minnesota, and markets its products primarily through a direct sales force in the United States (U.S.) and a combination of direct sales representatives and independent distributors in international markets. The primary markets for products are the U.S., Western Europe, Japan, and emerging markets.

Principles of Consolidation

Principles of Consolidation The consolidated financial statements include the accounts of Medtronic, Inc., and all of its subsidiaries. All significant intercompany transactions and accounts have been eliminated. U.S. generally accepted accounting principles (U.S. GAAP) are applied when determining whether an entity is subject to consolidation.

Beginning in the third quarter of fiscal year 2012, the results of operations, assets, and liabilities of the Physio-Control business, which were previously presented as a component of the Cardiac and Vascular Group operating segment, are classified as discontinued operations. All information in the following notes to the consolidated financial statements includes only results from continuing operations (excluding Physio-Control) for all periods presented, unless otherwise noted. For further information regarding discontinued operations, see Note 16.

Fiscal Year-End

Fiscal Year-End The Company utilizes a 52/53-week fiscal year, ending the last Friday in April. The Company’s fiscal years 2013, 2012, and 2011 ended on April 26, 2013, April 27, 2012, and April 29, 2011, respectively, all of which were 52-week years.

Reclassification

Reclassifications Certain prior period amounts have been reclassified to conform to the current year presentation.

Use of Estimates

Use of Estimates The preparation of the financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts in the financial statements and accompanying notes. Actual results could differ materially from those estimates.

Cash Equivalents

Cash Equivalents The Company considers highly liquid investments with maturities of three months or less from the date of purchase to be cash equivalents. These investments are carried at cost, which approximates fair value.

Investments

Investments Investments in marketable equity securities and debt securities are classified and accounted for as available-for-sale at April 26, 2013 and April 27, 2012. Debt securities include corporate debt securities, U.S. and foreign government and agency securities, certificates of deposit, mortgage-backed securities, other asset-backed securities, and auction rate securities. These investments are recorded at fair value in the consolidated balance sheets. The change in fair value for available-for-sale securities is recorded, net of taxes, as a component of accumulated other comprehensive loss on the consolidated balance sheets.

Investments in securities that are classified and accounted for as trading securities at April 26, 2013 and April 27, 2012 include exchange-traded funds and are recorded at fair value on the consolidated balance sheets. The Company’s trading securities seek to offset changes in liabilities related to equity and other market risks of certain deferred compensation arrangements. The change in fair value for trading securities is recorded as a component of interest expense, net on the consolidated statements of earnings. Management determines the appropriate classification of its investments in debt and equity securities at the time of purchase and reevaluates such determinations at each balance sheet date.

Effective April 26, 2013, the Company changed the method of classification of certain investments previously classified as long-term investments to current. The prior period balances have been reclassified to conform to the current year presentation. This new method classifies these securities as current or long-term based on the nature of the securities and availability for use in current operations while the prior classification was based on the maturities of the investments. The Company believes this method is preferable because it is consistent with how the Company manages its capital structure and liquidity. In conjunction with this change in classification of investments, the Company changed the classification of deferred taxes related to the unrealized gains and losses on investments previously classified as long-term from non-current assets to current assets.

Certain of the Company’s investments in equity and other securities are long-term, strategic investments in companies that are in varied stages of development. The Company accounts for these investments under the cost or the equity method of accounting, as appropriate. These investments are included in other assets on the consolidated balance sheets. The valuation of equity and other securities accounted for under the cost method considers all available financial information related to the investee, including valuations based on recent third-party equity investments in the investee. If an unrealized loss for any investment is considered to be other-than-temporary, the loss will be recognized in the consolidated statements of earnings in the period the determination is made. Equity securities accounted for under the equity method are initially recorded at the amount of the Company’s investment and adjusted each period for the Company’s share of the investee’s income or loss and dividends paid. Equity securities accounted for under both the cost and equity methods are reviewed quarterly for changes in circumstance or the occurrence of events that suggest the Company’s investment may not be recoverable. See Note 5 for discussion of the gains and losses recognized on equity and other securities.

Accounts Receivable

Accounts Receivable The Company grants credit to customers in the normal course of business, but generally does not require collateral or any other security to support its receivables. The Company maintains an allowance for doubtful accounts for potential credit losses. Uncollectible accounts are written off against the allowance when it is deemed that a customer account is uncollectible.

Inventories

Inventories Inventories are stated at the lower of cost or market, with cost determined on a first-in, first-out basis.

Property, Plant and Equipment

Property, Plant, and Equipment Property, plant, and equipment is stated at cost. Additions and improvements that extend the lives of the assets are capitalized while expenditures for repairs and maintenance are expensed as incurred. Depreciation is provided using the straight-line method over the estimated useful lives of the various assets

Goodwill

Goodwill Goodwill is the excess of the purchase price of an acquired business over the amounts assigned to assets acquired and liabilities assumed in a business combination. In accordance with U.S. GAAP, goodwill is not amortized. Goodwill is tested for impairment annually or whenever an event occurs or circumstances change that would indicate that the carrying amount may be impaired. Impairment testing for goodwill is done at a reporting unit level. An impairment loss is recognized when the carrying amount of the reporting unit’s net assets exceed the estimated fair value of the reporting unit. The estimated fair value is determined using a discounted future cash flow analysis.

Other Intangible Assets

Other Intangible Assets Other intangible assets include patents, trademarks, purchased technology, and in-process research and development (IPR&D) (since April 25, 2009). Intangible assets with a definite life are amortized on a straight-line or accelerated basis, as appropriate, with estimated useful lives ranging from three to 20 years. Intangible assets with a definite life are tested for impairment whenever events or changes in circumstances indicate that the carrying amount of an intangible asset (asset group) may not be recoverable. Indefinite-lived intangible assets are tested for impairment annually or whenever events or changes in circumstances indicate that the carrying amount of an intangible asset (asset group) may not be recoverable. Impairment is calculated as the excess of the asset’s carrying value over its fair value. Fair value is generally determined using a discounted future cash flow analysis.

IPR&D

IPR&D When the Company acquires another entity, the purchase price is allocated, as applicable, between IPR&D, other identifiable intangible assets, and net tangible assets, with the remainder recognized as goodwill. During fiscal year 2010, the Company adopted authoritative guidance related to business combinations. Under this guidance, IPR&D is capitalized. Prior to the adoption of this guidance, IPR&D was immediately expensed. The adoption of the authoritative guidance did not change the requirement to expense IPR&D immediately with respect to asset acquisitions. These IPR&D charges are included within acquisition-related items in the Company’s consolidated statements of earnings. IPR&D has an indefinite life and is not amortized until completion and development of the project, at which time the IPR&D becomes an amortizable asset. If the related project is not completed in a timely manner or the project is terminated or abandoned, the Company may have an impairment related to the IPR&D, calculated as the excess of the asset’s carrying value over its fair value.

The Company’s policy defines IPR&D as the value assigned to those projects for which the related products have not received regulatory approval and have no alternative future use. Determining the portion of the purchase price allocated to IPR&D requires the Company to make significant estimates. The amount of the purchase price allocated to IPR&D is determined by estimating the future cash flows of each project or technology and discounting the net cash flows back to their present values. The discount rate used is determined at the time of measurement in accordance with accepted valuation methods. These methodologies include consideration of the risk of the project not achieving commercial feasibility.

At the time of acquisition, the Company expects that all acquired IPR&D will reach technological feasibility, but there can be no assurance that the commercial viability of these products will actually be achieved. The nature of the efforts to develop the acquired technologies into commercially viable products consists principally of planning, designing, and conducting clinical trials necessary to obtain regulatory approvals. The risks associated with achieving commercialization include, but are not limited to, delay or failure to obtain regulatory approvals to conduct clinical trials, delay or failure to obtain required market clearances, or delays or issues with patent issuance, or validity and litigation. If commercial viability were not achieved, the Company would likely look to other alternatives to provide these therapies.

Contingent Consideration

Contingent Consideration During fiscal year 2010, as mentioned above, the Company adopted authoritative guidance related to business combinations. Under this guidance, the Company must recognize contingent purchase price consideration at fair value at the acquisition date. Prior to the adoption of this guidance, contingent consideration was not included on the balance sheet and was recorded as incurred. The acquisition date fair value is measured based on the consideration expected to be transferred (probability-weighted), discounted back to present value. The discount rate used is determined at the time of measurement in accordance with accepted valuation methods. The fair value of the contingent milestone consideration is remeasured at the estimated fair value at each reporting period with the change in fair value recognized as income or expense within acquisition-related items in the Company’s consolidated statements of earnings. Therefore, any changes in the fair value will impact the Company’s earnings in such reporting period thereby resulting in potential variability in the Company’s earnings until contingencies are resolved.

Warranty Obligation

Warranty Obligation The Company offers a warranty on various products. The Company estimates the costs that may be incurred under its warranties and records a liability in the amount of such costs at the time the product is sold. Factors that affect the Company’s warranty liability include the number of units sold, historical and anticipated rates of warranty claims, and cost per claim. The Company periodically assesses the adequacy of its recorded warranty liabilities and adjusts the amounts as necessary. The amount of the reserve recorded is equal to the net costs to repair or otherwise satisfy the claim. The Company includes the warranty obligation in other accrued expenses and other long-term liabilities on the Company’s consolidated balance sheets. The Company includes the covered costs associated with field actions, if any, in cost of products sold in the Company’s consolidated statements of earnings.

Self-Insurance

Self-Insurance It is the Company’s policy to self-insure the vast majority of its insurable risks including medical and dental costs, disability coverage, physical loss to property, business interruptions, workers’ compensation, comprehensive general, and product liability. Insurance coverage is obtained for those risks required to be insured by law or contract. A provision for losses under the self-insured program is recorded and revised quarterly. The Company uses claims data and historical experience, as applicable, to estimate liabilities associated with the exposures that the Company has self-insured. Based on historical loss trends, the Company believes that its self-insurance program accruals are adequate to cover future losses. Historical trends, however, may not be indicative of future losses. These losses could have a material adverse impact on the Company’s consolidated financial statements.

Retirement Benefit Plan Assumptions

Retirement Benefit Plan Assumptions The Company sponsors various retirement benefit plans, including defined benefit pension plans (pension benefits), post-retirement medical plans (post-retirement benefits), defined contribution savings plans, and termination indemnity plans, covering substantially all U.S. employees and many employees outside the U.S. Pension benefit costs include assumptions for the discount rate, retirement age, compensation rate increases, and the expected return on plan assets. Post-retirement medical benefit costs include assumptions for the discount rate, retirement age, expected return on plan assets, and health care cost trend rate assumptions.

The Company evaluates the discount rate, retirement age, compensation rate increases, expected return on plan assets, and health care cost trend rates of its pension benefits and post-retirement benefits annually. In evaluating these assumptions, many factors are considered, including an evaluation of assumptions made by other companies, historical assumptions compared to actual results, current market conditions, asset allocations, and the views of leading financial advisors and economists. In evaluating the expected retirement age assumption, the Company considers the retirement ages of past employees eligible for pension and medical benefits together with expectations of future retirement ages. Refer to Note 14 for additional information regarding the Company’s retirement benefit plans.

Revenue Recognition

Revenue Recognition The Company sells its products primarily through a direct sales force in the U.S. and a combination of direct sales representatives and independent distributors in international markets. The Company recognizes revenue when title to the goods and risk of loss transfers to customers, provided there are no material remaining performance obligations required of the Company or any matters requiring customer acceptance. In cases where the Company utilizes distributors or ships product directly to the end user, it recognizes revenue upon shipment provided all revenue recognition criteria have been met. A portion of the Company’s revenue is generated from inventory maintained at hospitals or with field representatives. For these products, revenue is recognized at the time the product has been used or implanted. For multiple-element arrangements, the Company allocates arrangement consideration to the deliverables by use of the relative selling price method. The selling price used for each deliverable is based on vendor–specific objective evidence (VSOE) if available, third–party evidence (TPE) if VSOE is not available, or best estimated selling price (BESP) if neither VSOE nor TPE is available. BESP is determined in a manner consistent with that used to establish the price to sell the deliverable on a standalone basis. The Company records estimated sales returns, discounts, and rebates as a reduction of net sales in the same period revenue is recognized.

Research and Development

Research and Development Research and development costs are expensed when incurred. Research and development costs include costs of all basic research activities as well as other research, engineering, and technical effort required to develop a new product or service or make significant improvement to an existing product or manufacturing process. Research and development costs also include pre-approval regulatory and clinical trial expenses.

Other Expense, Net

Other Expense, Net Other expense, net includes royalty income and expense, realized equity security gains and losses, realized foreign currency transaction and derivative gains and losses, impairment charges on equity securities, the Puerto Rico excise tax, and the U.S. medical device excise tax.

Stock-Based Compensation

Stock-Based Compensation The Company’s compensation programs include share-based payments. All awards under share-based payment programs are accounted for at fair value and these fair values are generally amortized on a straight-line basis over the vesting terms into cost of products sold, research and development expense, and selling, general, and administrative expense in the consolidated statements of earnings, as appropriate. Refer to Note 12 for additional information.

Foreign Currency Translation

Foreign Currency Translation Assets and liabilities of non-U.S. functional currency entities are translated to U.S. dollars at period-end exchange rates, and the resulting gains and losses arising from the translation of those net assets are recorded as a cumulative translation adjustment, a component of accumulated other comprehensive loss on the consolidated balance sheets. Elements of the consolidated statements of earnings are translated at average currency exchange rates in effect during the period and foreign currency transaction gains and losses are included in other expense, net in the consolidated statements of earnings.

Comprehensive Income and Accumulated Other Comprehensive Loss

Comprehensive Income and Accumulated Other Comprehensive Loss In addition to net earnings, comprehensive income includes changes in currency exchange rate translation adjustments, unrealized gains and losses on currency exchange rate derivative contracts and interest rate derivative instruments qualifying and designated as cash flow hedges, net changes in retirement obligation funded status, and unrealized gains and losses on available-for-sale marketable securities. Taxes are not provided on cumulative translation adjustments as substantially all translation adjustments relate to earnings that are intended to be indefinitely reinvested outside the U.S.

Derivatives

Derivatives U.S. GAAP requires companies to recognize all derivatives as assets and liabilities on the balance sheet and to measure the instruments at fair value through earnings unless the derivative qualifies as a hedge. If the derivative is a hedge, depending on the nature of the hedge and hedge effectiveness, changes in the fair value of the derivative will either be recognized currently through earnings or recorded in other comprehensive income (loss) until the hedged item is recognized in earnings upon settlement/termination. The changes in the fair value of the derivative are intended to offset the change in fair value of the hedged asset, liability, or probable commitment. The Company evaluates hedge effectiveness at inception and on an ongoing basis. If a derivative is no longer expected to be highly effective, hedge accounting is discontinued. Hedge ineffectiveness, if any, is recorded in earnings.

The Company uses operational and economic hedges, as well as currency exchange rate derivative contracts and interest rate derivative instruments, to manage the impact of currency exchange and interest rate changes on earnings and cash flows. In order to minimize earnings and cash flow volatility resulting from currency exchange rate changes, the Company enters into derivative instruments, principally forward currency exchange rate contracts. These contracts are designed to hedge anticipated foreign currency transactions and changes in the value of specific assets and liabilities. At inception of the forward contract, the derivative is designated as either a freestanding derivative or cash flow hedge. The primary currencies of the derivative instruments are the Euro and the Japanese Yen. The Company does not enter into currency exchange rate derivative contracts for speculative purposes. All derivative instruments are recorded at fair value on the consolidated balance sheets, as a component of prepaid expenses and other current assets, other assets, other accrued expenses, or other long-term liabilities depending upon the gain or loss position of the contract and contract maturity date.

Forward currency exchange rate contracts designated as cash flow hedges are designed to hedge the variability of cash flows associated with forecasted transactions denominated in a foreign currency that will take place in the future. Changes in value of derivatives designated as cash flow hedges are recorded in accumulated other comprehensive loss on the consolidated balance sheets until earnings are affected by the variability of the underlying cash flows. At that time, the applicable amount of gain or loss from the derivative instrument that is deferred in shareholders’ equity is reclassified into earnings and is included in other expense, net or cost of products sold in the consolidated statements of earnings, depending on the underlying transaction that is being hedged.

The Company uses forward currency exchange rate contracts to offset its exposure to the change in value of specific foreign currency denominated assets and liabilities. These forward currency exchange rate contracts are not designated as hedges, and therefore, changes in the value of these freestanding derivatives are recognized currently in earnings, thereby offsetting the current earnings effect of the related change in value of foreign currency denominated assets and liabilities.

The Company uses forward starting interest rate derivative instruments to manage the exposure to interest rate volatility with regard to future issuances of fixed-rate debt. These derivative instruments are designated as cash flow hedges under U.S. GAAP. The effective portion of the gain or loss on the derivative is reported as a component of accumulated other comprehensive loss and beginning in the period or periods in which the planned debt issuance occurs, the gain or loss is then reclassified into interest expense, net over the term of the related debt.

The Company uses interest rate derivative instruments to manage its exposure to interest rate movements and to reduce borrowing costs by converting fixed-rate debt into floating-rate debt. The objective of the instruments is to more effectively manage the Company’s borrowing costs and interest rate risk. These derivative instruments are designated as fair value hedges under U.S. GAAP. Changes in the fair value of the derivative instrument are recorded in interest expense, net, and are offset by changes in the fair value on the underlying debt instrument. Interest expense, net includes interest payments made or received under interest rate derivative instruments.

In addition, the Company has collateral credit agreements with its primary derivative counterparties. Under these agreements, either party is required to post eligible collateral when the market value of transactions covered by the agreement exceeds specific thresholds, thus limiting credit exposure for both parties

Earnings Per Share

Earnings Per Share Basic earnings per share is computed based on the weighted average number of common shares outstanding. Diluted earnings per share is computed based on the weighted average number of common shares outstanding, increased by the number of additional shares that would have been outstanding had the potentially dilutive common shares been issued and reduced by the number of shares the Company could have repurchased from the proceeds from issuance of the potentially dilutive shares. Potentially dilutive shares of common stock include stock options and other stock-based awards granted under stock-based compensation plans and shares committed to be purchased under the employee stock purchase plan.

New Accounting Standards

Recently Adopted

In June 2011, and as subsequently amended in December 2011, the Financial Accounting Standards Board (FASB) issued final guidance on the presentation of comprehensive income. Under the newly issued guidance, net income and comprehensive income may only be presented either as one continuous statement or in two separate, but consecutive statements. The Company retrospectively adopted this guidance in the first quarter of fiscal year 2013, with comprehensive income shown as a separate statement immediately following the consolidated statements of earnings. Since the new guidance only relates to presentation, its adoption did not impact the Company’s financial position, results of operations, or cash flows.

In September 2011, the FASB updated the accounting guidance related to annual and interim goodwill impairment testing. The updated accounting guidance allows entities to first assess qualitative factors before performing a quantitative assessment of the fair value of a reporting unit. If it is determined on the basis of qualitative factors that the fair value of the reporting unit is more likely than not less than the carrying amount, the existing quantitative impairment test is required. Otherwise, no further impairment testing is required. The Company adopted this guidance in the first quarter of fiscal year 2013. The adoption did not have a material impact on the Company’s consolidated financial statements.

Not Yet Adopted

In December 2011 and January 2013, the FASB issued new accounting guidance related to disclosures on offsetting assets and liabilities on the balance sheet. This newly issued accounting standard requires an entity to disclose both gross and net information about instruments and transactions eligible for offset in the balance sheet as well as instruments and transactions executed under a master netting or similar arrangement and was issued to enable users of financial statements to understand the effects or potential effects of those arrangements on its financial position. This accounting guidance is required to be applied retrospectively and is effective for the Company beginning in the first quarter of fiscal year 2014. Since the accounting guidance only impacts disclosure requirements, its adoption will not have a material impact on the Company’s consolidated financial statements.

In July 2012, the FASB updated the accounting guidance related to annual and interim indefinite-lived intangible asset impairment testing. The updated accounting guidance allows entities to first assess qualitative factors before performing a quantitative assessment of the fair value of indefinite-lived intangible assets. If it is determined on the basis of qualitative factors that the fair value of indefinite-lived intangible assets is more likely than not less than the carrying amount, the existing quantitative impairment test is required. Otherwise, no further impairment testing is required. The Company will adopt this accounting guidance in the first quarter of fiscal year 2014 and does not expect it to have a material impact on the Company’s consolidated financial statements.

In February 2013, the FASB expanded the disclosure requirements with respect to changes in accumulated other comprehensive income (AOCI). Under this new guidance, companies will be required to disclose the amount of income (or loss) reclassified out of AOCI to each respective line item on the statements of earnings where net income is presented. The guidance allows companies to elect whether to disclose the reclassification either in the notes to the financial statements or parenthetically on the face of the financial statements. This update is effective for the Company beginning in the first quarter of fiscal year 2014. Since the accounting guidance only impacts disclosure requirements, its adoption will not have a material impact on the Company’s consolidated financial statements.

In March 2013, the FASB issued amended guidance on a parent company's accounting for the cumulative translation adjustment (CTA) recorded in AOCI associated with a foreign entity. The amendment requires a parent to release into net income the CTA related to its investment in a foreign entity when it either sells a part or all of its investment in, or no longer holds a controlling financial interest in a subsidiary or group of assets within a foreign entity. This accounting guidance is effective for the Company beginning in the first quarter of fiscal year 2015, with early adoption permitted. Subsequent to adoption, this amended guidance would impact the Company's financial position and results of operations prospectively in the instance of an event or transaction described above.