Summary of Significant Accounting Policies | NOTE 1 — Summary of Significant Accounting Policies Description of Business NIKE, Inc. is a worldwide leader in the design, development and worldwide marketing and selling of athletic footwear, apparel, equipment, accessories and services. NIKE, Inc. portfolio brands include the NIKE Brand, Jordan Brand, Hurley and Converse. The NIKE Brand is focused on performance athletic footwear, apparel, equipment, accessories and services across a wide range of sport categories, amplified with sport-inspired sportswear products carrying the Swoosh trademark, as well as other NIKE Brand trademarks. The Jordan Brand is focused on athletic and casual footwear, apparel and accessories using the Jumpman trademark. Sales and operating results of Jordan Brand products are reported within the respective NIKE Brand geographic operating segments. The Hurley brand is focused on surf and action sports and youth lifestyle footwear, apparel and accessories, using the Hurley trademark. Sales and operating results of Hurley brand products are reported within the NIKE Brand’s North America geographic operating segment. Converse designs, distributes, markets and sells casual sneakers, apparel and accessories under the Converse, Chuck Taylor, All Star, One Star, Star Chevron and Jack Purcell trademarks. In some markets outside the U.S., these trademarks are licensed to third parties who design, distribute, market and sell similar products. Operating results of the Converse brand are reported on a stand-alone basis. Basis of Consolidation The Consolidated Financial Statements include the accounts of NIKE, Inc. and its subsidiaries (the “Company”). All significant intercompany transactions and balances have been eliminated. On November 19, 2015, the Company announced a two -for-one split of both NIKE Class A and Class B Common Stock. The stock split was in the form of a 100 percent stock dividend payable on December 23, 2015 to shareholders of record at the close of business on December 9, 2015. Common stock began trading at the split-adjusted price on December 24, 2015. All share and per share amounts presented reflect the stock split. Reclassifications Certain prior year amounts have been reclassified to conform to fiscal 2018 presentation, including reclassified geographic operating segment data to reflect the changes in the Company’s operating structure, which became effective on June 1, 2017. Refer to Note 17 — Operating Segments and Related Information for additional information. During the fourth quarter of fiscal 2018, management identified a misstatement related to the historical allocation of repurchases of Class B Common stock between Capital in excess of stated value and Retained earnings . The Company assessed the materiality of these misstatements on prior period financial statements in accordance with U.S. Securities and Exchange Commission Staff Accounting Bulletin No. 99, Materiality, codified in ASC 250, Presentation of Financial Statements, and concluded that these misstatements were not material to any prior annual or interim period. As such, the Company has revised the Consolidated Balance Sheets as of May 31, 2017 , and has reduced Capital in excess of stated value by $2.9 billion and increased Retained earnings by the same amount. Within the Consolidated Statements of Shareholders’ Equity, the Company has made corresponding revisions of $2.6 billion , $0.1 billion and $0.2 billion for the periods ended May 31, 2015, 2016 and, 2017, respectively. Revenue Recognition Wholesale revenues are recognized when title and the risks and rewards of ownership have passed to the customer, based on the terms of sale. This occurs upon shipment or upon receipt by the customer depending on the country of the sale and the agreement with the customer. Retail store revenues are recorded at the time of sale and digital commerce revenues are recorded upon delivery to the customer. Amounts collected from customers for sales or value added tax are recorded on a net basis. Provisions for post-invoice sales discounts, returns and miscellaneous claims from customers are estimated and recorded as a reduction to revenue at the time of sale. Post-invoice sales discounts consist of contractual programs with certain customers or discretionary discounts expected to be granted to certain customers at a later date. Estimates of discretionary discounts, returns and claims are based on (1) historical rates, (2) specific identification of outstanding claims and outstanding returns not yet received from customers and (3) estimated discounts, returns and claims expected, but not yet finalized with customers. As of May 31, 2018 and 2017 , the Company’s reserve balances for post-invoice sales discounts, returns and miscellaneous claims were $675 million and $643 million , respectively. Cost of Sales Cost of sales consists primarily of inventory costs, as well as warehousing costs (including the cost of warehouse labor), third-party royalties, certain foreign currency hedge gains and losses and product design costs. Outbound shipping and handling costs are expensed as incurred and included in Cost of sales . Demand Creation Expense Demand creation expense consists of advertising and promotion costs, including costs of endorsement contracts, complimentary product, television, digital and print advertising and media costs, brand events and retail brand presentation. Advertising production costs are expensed the first time an advertisement is run. Advertising media costs are expensed when the advertisement appears. Costs related to brand events are expensed when the event occurs. Costs related to retail brand presentation are expensed when the presentation is complete and delivered. A significant amount of the Company’s promotional expenses result from payments under endorsement contracts. In general, endorsement payments are expensed on a straight-line basis over the term of the contract. However, certain contract elements may be accounted for differently based upon the facts and circumstances of each individual contract. Prepayments made under contracts are included in Prepaid expenses and other current assets or Deferred income taxes and other assets depending on the period to which the prepayment applies. Certain contracts provide for contingent payments to endorsers based upon specific achievements in their sports (e.g., winning a championship). The Company records Demand creation expense for these amounts when the endorser achieves the specific goal. Certain contracts provide for variable payments based upon endorsers maintaining a level of performance in their sport over an extended period of time (e.g., maintaining a specified ranking in a sport for a year). When the Company determines payments are probable, the amounts are reported in Demand creation expense ratably over the contract period based on the Company’s best estimate of the endorser’s performance. In these instances, to the extent actual payments to the endorser differ from the Company’s estimate due to changes in the endorser’s performance, adjustments to Demand creation expense may be recorded in a future period. Certain contracts provide for royalty payments to endorsers based upon a predetermined percent of sales of particular products. The Company expenses these payments in Cost of sales as the related sales occur. In certain contracts, the Company offers minimum guaranteed royalty payments. For contracts the Company estimates will not meet the minimum guaranteed amount of royalty fees through sales of product, the Company records the amount of the guaranteed payment in excess of that earned through sales of product in Demand creation expense uniformly over the contract period. Through cooperative advertising programs, the Company reimburses customers for certain costs of advertising the Company’s products. The Company records these costs in Demand creation expense at the point in time when it is obligated to its customers for the costs. This obligation may arise prior to the related advertisement being run. Total advertising and promotion expenses, which the Company refers to as Demand creation expense, were $3,577 million , $3,341 million and $3,278 million for the years ended May 31, 2018 , 2017 and 2016 , respectively. Prepaid advertising and promotion expenses totaled $730 million and $558 million at May 31, 2018 and 2017 , respectively, of which $359 million and $311 million , respectively, was recorded in Prepaid expenses and other current assets , and $371 million and $247 million , respectively, was recorded in Deferred income taxes and other assets, depending on the period to which the prepayment applies. Operating Overhead Expense Operating overhead expense consists primarily of wage and benefit-related expenses, research and development costs, as well as other administrative expenses, such as rent, depreciation and amortization, professional services, meetings and travel. Cash and Equivalents Cash and equivalents represent cash and short-term, highly liquid investments, that are both readily convertible to known amounts of cash, and so near their maturity they present insignificant risk of changes in value because of changes in interest rates, including commercial paper, U.S. Treasury, U.S. Agency, money market funds, time deposits and corporate debt securities with maturities of 90 days or less at the date of purchase. Short-Term Investments Short-term investments consist of highly liquid investments, including commercial paper, U.S. Treasury, U.S. Agency, time deposits and corporate debt securities, with maturities over 90 days at the date of purchase. Debt securities the Company has the ability and positive intent to hold to maturity are carried at amortized cost. At May 31, 2018 and 2017 , the Company did not hold any short-term investments classified as trading or held-to-maturity. At May 31, 2018 and 2017 , Short-term investments consisted of available-for-sale securities. Available-for-sale securities are recorded at fair value with unrealized gains and losses reported, net of tax, in Accumulated other comprehensive income , unless unrealized losses are determined to be other than temporary. Realized gains and losses on the sale of securities are determined by specific identification. The Company considers all available-for-sale securities, including those with maturity dates beyond 12 months, as available to support current operational liquidity needs and, therefore, classifies all securities with maturity dates beyond 90 days at the date of purchase as current assets within Short-term investments on the Consolidated Balance Sheets. Refer to Note 6 — Fair Value Measurements for more information on the Company’s short-term investments. Allowance for Uncollectible Accounts Receivable Accounts receivable, net consist primarily of amounts receivable from customers. The Company makes ongoing estimates relating to the collectability of its accounts receivable and maintains an allowance for estimated losses resulting from the inability of its customers to make required payments. In determining the amount of the allowance, the Company considers historical levels of credit losses and makes judgments about the creditworthiness of significant customers based on ongoing credit evaluations. Accounts receivable with anticipated collection dates greater than 12 months from the balance sheet date and related allowances are considered non-current and recorded in Deferred income taxes and other assets . The allowance for uncollectible accounts receivable was $30 million and $19 million at May 31, 2018 and 2017 , respectively. Inventory Valuation Inventories are stated at lower of cost and net realizable value, and valued on either an average or a specific identification cost basis. In some instances, we ship product directly from our supplier to the customer, with the related inventory and cost of sales recognized on a specific identification basis. Inventory costs primarily consist of product cost from the Company’s suppliers, as well as inbound freight, import duties, taxes, insurance and logistics and other handling fees. Property, Plant and Equipment and Depreciation Property, plant and equipment are recorded at cost. Depreciation is determined on a straight-line basis for land improvements, buildings and leasehold improvements over 2 to 40 years and for machinery and equipment over 2 to 15 years. Depreciation and amortization of assets used in manufacturing, warehousing and product distribution are recorded in Cost of sales . Depreciation and amortization of all other assets are recorded in Operating overhead expense . Software Development Costs Internal Use Software : Expenditures for major software purchases and software developed for internal use are capitalized and amortized over a 2 to 12 -year period on a straight-line basis. The Company’s policy provides for the capitalization of external direct costs of materials and services associated with developing or obtaining internal use computer software. In addition, the Company also capitalizes certain payroll and payroll-related costs for employees who are directly associated with internal use computer software projects. The amount of capitalizable payroll costs with respect to these employees is limited to the time directly spent on such projects. Costs associated with preliminary project stage activities, training, maintenance and all other post-implementation stage activities are expensed as incurred. Computer Software to be Sold, Leased or Otherwise Marketed : Development costs of computer software to be sold, leased or otherwise marketed as an integral part of a product are subject to capitalization beginning when a product’s technological feasibility has been established and ending when a product is available for general release to customers. In most instances, the Company’s products are released soon after technological feasibility has been established. Therefore, software development costs incurred subsequent to achievement of technological feasibility are usually not significant, and generally most software development costs have been expensed as incurred. Impairment of Long-Lived Assets The Company reviews the carrying value of long-lived assets or asset groups to be used in operations whenever events or changes in circumstances indicate the carrying amount of the assets might not be recoverable. Factors that would necessitate an impairment assessment include a significant adverse change in the extent or manner in which an asset is used, a significant adverse change in legal factors or the business climate that could affect the value of the asset or a significant decline in the observable market value of an asset, among others. If such facts indicate a potential impairment, the Company would assess the recoverability of an asset group by determining if the carrying value of the asset group exceeds the sum of the projected undiscounted cash flows expected to result from the use and eventual disposition of the assets over the remaining economic life of the primary asset in the asset group. If the recoverability test indicates that the carrying value of the asset group is not recoverable, the Company will estimate the fair value of the asset group using appropriate valuation methodologies, which would typically include an estimate of discounted cash flows. Any impairment would be measured as the difference between the asset group’s carrying amount and its estimated fair value. Goodwill and Indefinite-Lived Intangible Assets The Company performs annual impairment tests on goodwill and intangible assets with indefinite lives in the fourth quarter of each fiscal year or when events occur or circumstances change that would, more likely than not, reduce the fair value of a reporting unit or an intangible asset with an indefinite life below its carrying value. Events or changes in circumstances that may trigger interim impairment reviews include significant changes in business climate, operating results, planned investments in the reporting unit, planned divestitures or an expectation the carrying amount may not be recoverable, among other factors. The Company may first assess qualitative factors to determine whether it is more likely than not the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events and circumstances, the Company determines it is more likely than not the fair value of the reporting unit is greater than its carrying amount, the two-step impairment test is unnecessary. The two-step impairment test first requires the Company to estimate the fair value of its reporting units. If the carrying value of a reporting unit exceeds its fair value, the goodwill of that reporting unit is potentially impaired and the Company proceeds to step two of the impairment analysis. In step two of the analysis, the Company measures and records an impairment loss equal to the excess of the carrying value of the reporting unit’s goodwill over its implied fair value, if any. Indefinite-lived intangible assets primarily consist of acquired trade names and trademarks. The Company may first perform a qualitative assessment to determine whether it is more likely than not an indefinite-lived intangible asset is impaired. If, after assessing the totality of events and circumstances, the C ompany determines it is more likely than not that the indefinite-lived intangible asset is not impaired, no quantitative fair value measurement is necessary. If a quantitative fair value measurement calculation is required for these intangible assets, the Company utilizes the relief-from-royalty method. This method assumes trade names and trademarks have value to the extent their owner is relieved of the obligation to pay royalties for the benefits received from them. This method requires the Company to estimate the future revenue for the related brands, the appropriate royalty rate and the weighted average cost of capital. Operating Leases The Company leases retail store space, certain distribution and warehouse facilities, office space, equipment and other non-real estate assets under operating leases. Operating lease agreements may contain rent escalation clauses, renewal options, rent holidays or certain landlord incentives, including tenant improvement allowances. Rent expense for non-cancelable operating leases with scheduled rent increases or landlord incentives are recognized on a straight-line basis over the lease term, beginning with the effective lease commencement date, which is generally the date in which the Company takes possession of or controls the physical use of the property. Certain leases also provide for contingent rent, which is generally determined as a percent of sales in excess of specified levels. A contingent rent liability is recognized together with the corresponding rent expense when specified levels have been achieved or when the Company determines that achieving the specified levels during the period is probable. Fair Value Measurements The Company measures certain financial assets and liabilities at fair value on a recurring basis, including derivatives and available-for-sale securities. Fair value is the price the Company would receive to sell an asset or pay to transfer a liability in an orderly transaction with a market participant at the measurement date. The Company uses a three-level hierarchy established by the Financial Accounting Standards Board (FASB) that prioritizes fair value measurements based on the types of inputs used for the various valuation techniques (market approach, income approach and cost approach). The levels of the fair value hierarchy are described below: • Level 1: Quoted prices in active markets for identical assets or liabilities. • Level 2: Inputs other than observable quoted prices for the asset or liability, either directly or indirectly; these include quoted prices for similar assets or liabilities in active markets and quoted prices for identical or similar assets or liabilities in markets that are not active. • Level 3: Unobservable inputs with little or no market data available, which require the reporting entity to develop its own assumptions. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability. Financial assets and liabilities are classified in their entirety based on the most conservative level of input that is significant to the fair value measurement. Pricing vendors are utilized for a majority of Level 1 and Level 2 investments. These vendors either provide a quoted market price in an active market or use observable inputs without applying significant adjustments in their pricing. Observable inputs include broker quotes, interest rates and yield curves observable at commonly quoted intervals, volatilities and credit risks. The fair value of derivative contracts is determined using observable market inputs such as the daily market foreign currency rates, forward pricing curves, currency volatilities, currency correlations and interest rates and considers nonperformance risk of the Company and its counterparties. Level 1 investments include U.S. Treasury securities. Assets and liabilities included within Level 2 include commercial paper, U.S. Agency securities, money market funds, time deposits, corporate debt securities and derivative contracts. Level 3 investments are valued using internally developed models with unobservable inputs and are an immaterial portion of our portfolio. The Company’s fair value measurement process includes comparing fair values to another independent pricing vendor to ensure appropriate fair values are recorded. Refer to Note 6 — Fair Value Measurements for additional information. Foreign Currency Translation and Foreign Currency Transactions Adjustments resulting from translating foreign functional currency financial statements into U.S. Dollars are included in the foreign currency translation adjustment, a component of Accumulated other comprehensive income in Total shareholders’ equity . The Company’s global subsidiaries have various assets and liabilities, primarily receivables and payables, which are denominated in currencies other than their functional currency. These balance sheet items are subject to re-measurement, the impact of which is recorded in Other expense (income), net , within the Consolidated Statements of Income. Accounting for Derivatives and Hedging Activities The Company uses derivative financial instruments to reduce its exposure to changes in foreign currency exchange rates and interest rates. All derivatives are recorded at fair value on the Consolidated Balance Sheets and changes in the fair value of derivative financial instruments are either recognized in Accumulated other comprehensive income (a component of Total shareholders’ equity ), Long-term debt or Net income depending on the nature of the underlying exposure, whether the derivative is formally designated as a hedge and, if designated, the extent to which the hedge is effective. The Company classifies the cash flows at settlement from derivatives in the same category as the cash flows from the related hedged items. For undesignated hedges and designated cash flow hedges, this is primarily within the Cash provided by operations component of the Consolidated Statements of Cash Flows. For designated net investment hedges, this is within the Cash used by investing activities component of the Consolidated Statements of Cash Flows. For the Company’s fair value hedges, which are interest rate swaps used to mitigate the change in fair value of its fixed-rate debt attributable to changes in interest rates, the related cash flows from periodic interest payments are reflected within the Cash provided by operations component of the Consolidated Statements of Cash Flows. Refer to Note 16 — Risk Management and Derivatives for additional information on the Company’s risk management program and derivatives. Stock-Based Compensation The Company accounts for stock-based compensation by estimating the fair value of options and stock appreciation rights granted under the NIKE, Inc. Stock Incentive Plan and employees’ purchase rights under the employee stock purchase plans (ESPPs) using the Black-Scholes option pricing model. The Company recognizes this fair value as Cost of sales or Operating overhead expense , as applicable, in the Consolidated Statements of Income over the vesting period using the straight-line method. Refer to Note 11 — Common Stock and Stock-Based Compensation for additional information on the Company’s stock-based compensation programs. Income Taxes The Company accounts for income taxes using the asset and liability method. This approach requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the carrying amounts and the tax basis of assets and liabilities. The Company records a valuation allowance to reduce deferred tax assets to the amount management believes is more likely than not to be realized. The Company recognizes a tax benefit from uncertain tax positions in the financial statements only when it is more likely than not the position will be sustained upon examination by relevant tax authorities. The Company recognizes interest and penalties related to income tax matters in Income tax expense . Refer to Note 9 — Income Taxes for further discussion. Earnings Per Share Basic earnings per common share is calculated by dividing Net income by the weighted average number of common shares outstanding during the year. Diluted earnings per common share is calculated by adjusting weighted average outstanding shares, assuming conversion of all potentially dilutive stock options and awards. Refer to Note 12 — Earnings Per Share for further discussion. Management Estimates The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates, including estimates relating to assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates. Recently Adopted Accounting Standards In February 2018, the FASB issued Accounting Standards Update (ASU) No. 2018-02, Income Statement — Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income . The standard allows for reclassification of stranded tax effects on items resulting from the Tax Cuts and Jobs Act (the “Tax Act”) from Accumulated other comprehensive income to Retained earnings . Tax effects unrelated to the Tax Act are released from Accumulated other comprehensive income using either the specific identification approach or the portfolio approach based on the nature of the underlying item. The Company early adopted the ASU in the third quarter of fiscal 2018. As a result of the adoption, Retained earnings decreased by $17 million , with a corresponding increase to Accumulated other comprehensive income due to the reduction in the corporate tax rate from 35% to 21%. Refer to Note 9 — Income Taxes for additional information on the impact of the Tax Act. In March 2016, the FASB issued ASU No. 2016-09, Compensation — Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting , which changes how companies account for certain aspects of share-based payment awards to employees. The Company adopted the ASU in the first quarter of fiscal 2018. The updated guidance requires excess tax benefits and deficiencies from share-based payment awards to be recorded in income tax expense in the income statement. Previously, excess tax benefits and deficiencies were recognized in shareholders’ equity on the balance sheet. This change is required to be applied prospectively. As a result of the adoption, during fiscal 2018, the Company recognized $230 million of excess tax benefits related to share-based payment awards in Income tax expense in the Consolidated Statements of Income. Additionally, ASU 2016-09 modified the classification of certain share-based payment activities within the statement of cash flows, which the Company applied retrospectively. As a result, for fiscal 2017 and fiscal 2016, the Company reclassified cash inflows of $177 million and $281 million , respectively, related to excess tax benefits from share-based payment awards, from Cash used by financing activities to Cash provided by operations , and reclassified cash outflows of $29 million and $22 million , for the respective periods, related to tax payments for the net settlement of share-based payment awards, from Cash provided by operations to Cash used by financing activities within the Consolidated Statements of Cash Flows. Recently Issued Accounting Standards In August 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities , which expands and refines hedge accounting for both financial and non-financial risk components, aligns the recognition and presentation of the effects of hedging instruments and hedge items in the financial statements, and includes certain targeted improvements to ease the application of current guidance related to the assessment of hedge effectiveness. The update to the standard is effective for the Company on June 1, 2019, with early adoption permitted in any interim period. The Company is currently evaluating the updated guidance, but does not expect the adoption to have a material impact on the Consolidated Financial Statements. In October 2016, the FASB issued ASU No. 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory . The updated guidance requires companies to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. Income tax effects of intra-entity transfers of inventory will continue to be deferred until the inventory has been sold to a third party. The Company will adopt the standard on June 1, 2018, using a modified retrospective approach, with the cumulative effect of applying the new standard recognized in retained earnings at the date of adoption. Upon adoption, the Company will record a cumulative effect adjustment reducing Retained earnings , Deferred income taxes and other assets , and Prepaid expenses and other current assets by $507 million , $422 million and $45 million , respectively, and increasing Deferred income taxes and other liabilities by $40 million . In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) , which replaces existing lease accounting guidance. The new standard is intended to provide enhanced transparency and comparability by requiring lessees to record right-of-use assets and corresponding lease liabilities on the balance sheet. The new guidance will require the Company to continue to classify leases as either operating or financing, with classification affecting the pattern of expense recognition in the income statement. The Company will adopt the standard on June 1, 2019. The ASU is required to be applied using a modified retrospective approach at the beginning of the earliest period presented, with optional practical expedients. The Company continues to assess the effect the guidance will have on its existing accounting policies and the Consolidated Financial Statements and expects there will be an increase in assets and liabilities on the Consolidated Balance Sheets at adoption due to the recording of right-of-use assets and corresponding lease liabilities, which may be material. Refer to Note 15 — Commitments and Contingencies for information about the Company’s lease obligations. In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments — Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities . The updated guidance enhances the reporting model for financial instruments, which includes amendments to address aspects of recognition, measurement, presentation and disclosure. The update to the standard is effective for the Company beginning June 1, 2018. The Company does not expect the adoption to have a material impact on the Consolidated Financial Statements. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Co |