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Summary of Significant Accounting Policies (Policies) | 12 Months Ended
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May 31, 2023
Accounting Policies [Abstract] |
Consolidation | Consolidation: Our consolidated financial statements include the accounts of Worthington Industries and its consolidated subsidiaries. Significant intercompany accounts and transactions are eliminated. We own controlling interests in the following three joint ventures: Spartan (52%), TWB (55%), and Samuel (63%). We also own a 51% controlling interest in WSP, which became a non-operating joint venture on October 31, 2022, when its remaining net assets were sold. See “Note F – Restructuring and Other (Income) Expense, Net” for additional information. These joint ventures are consolidated with the equity owned by the other joint venture members shown as noncontrolling interests in our consolidated balance sheets, and their portions of net earnings and OCI shown as net earnings or comprehensive income attributable to noncontrolling interests in our consolidated statements of earnings and comprehensive income, respectively. Investments in unconsolidated affiliates are accounted for using the equity method with our proportionate share of income or loss recognized within equity in net income of unconsolidated affiliates (“equity income”) in our consolidated statements of earnings. See further discussion of our unconsolidated affiliates in “Note D – Investments in Unconsolidated Affiliates.” The Proposed Separation of the Steel Processing Business: On September 29, 2022, we announced that the Board approved the Separation, a plan to pursue a separation into two independent, publicly-traded companies – one company, Worthington Steel, is expected to be comprised of our Steel Processing operating segment, and the other company, New Worthington, is expected to be comprised of our Consumer Products, Building Products and Sustainable Energy Solutions operating segments. We plan to effect the Separation via a distribution of common shares of Worthington Steel, which is expected to be tax-free to shareholders of Worthington Industries for U.S. federal income tax purposes. The Separation transaction is expected to be completed by early 2024, but is subject to certain conditions, including, among other things, general market conditions, finalization of the capital structure of the two companies, completion of steps necessary to qualify the Separation as a tax-free transaction, receipt of regulatory approvals and final approval from the Board. Direct and incremental costs incurred in connection with the anticipated Separation, including audit, advisory, and legal costs, are presented separately in our consolidated statements of earnings as “Separation costs.” Separation costs totaled $24,048 during fiscal 2023. Minority buy-out of Worthington Taylor: On May 2, 2022, we purchased the 49% noncontrolling interest in Worthington Taylor, LLC (“Worthington Taylor”) from a subsidiary of U.S. Steel which also owns the noncontrolling interest in WSP. The purchase price for the noncontrolling interest in Worthington Taylor, the entity which owned the assets of WSP’s Taylor, Michigan facility, was $6,811. As a result of this transaction, Worthington Taylor became one of our wholly-owned subsidiaries. Due to our then existing controlling interest in the assets, the transaction was accounted for within equity.
Use of Estimates | Use of Estimates: The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in our consolidated financial statements and accompanying notes. Actual results could differ from those estimates.
Cash and Cash Equivalents | Cash and Cash Equivalents: We consider all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents. At May 31, 2023, cash and cash equivalents included cash held in banks, and short-term, highly liquid investments. Our short-term investments are measured at fair value using the net asset value per share practical expedient, and therefore, are not classified in the fair value hierarchy. Our cash held in banks is measured in the fair value hierarchy using Level 1 inputs.
Inventories | Inventories: Inventories are valued at the lower of cost or net realizable value. Cost is determined using the first-in, first-out method for all inventories. The assessment of net realizable value requires the use of estimates to determine cost to complete, normal profit margin and the ultimate selling price of inventory. We believe our inventories were valued appropriately as of May 31, 2023 and May 31, 2022.
Derivative Financial Instruments | Derivative Financial Instruments: We utilize derivative financial instruments to primarily manage exposure to certain risks related to our ongoing operations. The primary risks managed through the use of derivative financial instruments include interest rate risk, foreign currency exchange risk and commodity price risk. All derivative financial instruments are accounted for using mark-to-market accounting. The accounting for changes in the fair value of a derivative financial instrument depends on whether it has been designated and qualifies as part of a hedging relationship and, if so, the reason for holding it. Gains and losses on fair value hedges are recognized in current period earnings in the same line as the underlying hedged item. Gains and losses on cash flow hedges are deferred as a component of accumulated other comprehensive income or loss (“AOCI”) and recognized in earnings at the time the hedged item affects earnings, in the same financial statement caption as the underlying hedged item. Classification in our consolidated statements of earnings of gains and losses related to derivative financial instruments that do not qualify for hedge accounting is determined based on the underlying intent of the instruments. Cash flows related to derivative financial instruments are generally classified as operating activities in our consolidated statements of cash flows. In order for hedging relationships to qualify for hedge accounting under current accounting guidance, we formally document each hedging relationship and its risk management objective. Derivative financial instruments are executed only with highly-rated counterparties. No credit loss is anticipated on existing instruments, and no material credit losses have been experienced to date. We monitor our positions, as well as the credit ratings of counterparties to those positions. We discontinue hedge accounting when it is determined that a derivative financial instrument is no longer highly effective in offsetting the hedged risk, expires or is sold, is terminated or is no longer designated as a hedging instrument because it is unlikely that a forecasted transaction will occur or we determine that designation as a hedging instrument is no longer appropriate. In all situations in which hedge accounting is discontinued and the derivative financial instrument is retained, we continue to carry the derivative financial instrument at its fair value on our consolidated balance sheet and recognize any subsequent changes in its fair value in net earnings immediately. When it is probable that a forecasted transaction will not occur, we discontinue hedge accounting and immediately recognize the gains and losses that were accumulated in AOCI. Refer to “Note R – Derivative Financial Instruments and Hedging Activities” for additional information regarding our consolidated balance sheet location and the risk classification of our derivative financial instruments.
Risks and Uncertainties | Risks and Uncertainties: As of May 31, 2023, excluding our joint ventures, we operated 28 manufacturing facilities worldwide, principally in four operating segments, which corresponded with our reportable operating segments: Steel Processing, Consumer Products, Building Products, and Sustainable Energy Solutions. We also held equity positions in seven operating joint ventures, which operated 44 manufacturing facilities worldwide, as of May 31, 2023. Our largest end market is the automotive industry, which comprised 37% of our consolidated net sales in each of fiscal 2023, fiscal 2022, and fiscal 2021. Our international operations represented 13%, 6%, and 7% of our consolidated net sales and an insignificant portion of our consolidated net earnings attributable to controlling interest in fiscal 2023, fiscal 2022, and fiscal 2021, respectively, and 10% and of our consolidated net assets as of May 31, 2023 and May 31, 2022. As of May 31, 2023, approximately 15% of our consolidated labor force was represented by collective bargaining units, all of which are located in jurisdictions outside of the U.S. where collective bargaining arrangements are customary. The concentration of credit risks from financial instruments related to the markets we serve is not expected to have a material adverse effect on our consolidated financial position, cash flows or future results of operations. In fiscal 2023, our largest customer accounted for approximately 12% of our consolidated net sales, and our ten largest customers accounted for approximately 34% of our consolidated net sales. In fiscal 2022, our largest customer accounted for slightly less than 13% of our consolidated net sales, and our ten largest customers accounted for approximately 34% of our consolidated net sales. A significant loss of, or decrease in, business from any of these customers could have an adverse effect on our consolidated net sales and financial results if we were not able to obtain replacement business. Also, due to consolidation within the industries we serve, including the construction, automotive and retail industries, our sales may be increasingly sensitive to deterioration in the financial condition of, or other adverse developments with respect to, one or more of our largest customers. Our principal raw material is flat-rolled steel, which we purchase from multiple primary steel producers. The steel industry as a whole has been cyclical, and at times availability and pricing can be volatile due to a number of factors beyond our control. This volatility can significantly affect our steel costs. In an environment of increasing prices for steel and other raw materials, in general, competitive conditions or contractual obligations may impact how much of the price increases we can pass on to our customers. To the extent we are unable to pass on future price increases in our raw materials to our customers, our financial results could be adversely affected. Also, if steel prices decrease, in general, competitive conditions or contractual obligations may impact how quickly we must reduce our prices to our customers, and we could be forced to use higher-priced raw materials to complete orders for which the selling prices have decreased, which results in inventory holding losses. Declining steel prices could also require us to write-down the value of our inventories to reflect current net realizable value. Further, the number of suppliers has decreased in recent years due to industry consolidation and the financial difficulties of certain suppliers, and consolidation may continue. Accordingly, if delivery from a major steel supplier is disrupted, it may be more difficult to obtain an alternative supply than in the past.
Receivables | Receivables: We review our receivables on an ongoing basis to ensure that they are properly valued and collectible. With the adoption of Accounting Standards Update (“ASU”) 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, as discussed further below in “Recently Adopted Accounting Standards”, expected lifetime credit losses on receivables are recognized at the time of origination. We estimate the allowance for credit losses based on the expected future credit losses using the internal historical loss information and observable and forecasted macroeconomic data. The allowance for doubtful accounts is used to record the estimated risk of loss related to our customers’ inability to pay. This allowance is maintained at a level that we consider appropriate based on factors that affect collectability, such as the financial health of our customers, historical trends of charge-offs and recoveries and current economic and market conditions. As we monitor our receivables, we identify customers that may have payment problems, and we adjust the allowance accordingly, with the offset to SG&A expense. Account balances are charged off against the allowance when recovery is considered remote. The allowance for doubtful accounts increased $2,091 during fiscal 2023 to $3,383. While we believe our allowance for doubtful accounts is adequate, changes in economic conditions, the financial health of customers and bankruptcy settlements could impact our future earnings. If the economic environment and market conditions deteriorate, particularly in the automotive and construction end markets where our exposure is greatest, additional reserves may be required.
Property and Depreciation | Property and Depreciation: Property, plant and equipment are carried at cost and depreciated using the straight-line method. Buildings and improvements are depreciated over 10 to 40 years and machinery and equipment over 3 to 20 years. Depreciation expense was $93,961, $83,272 and $74,779 during fiscal 2023, fiscal 2022 and fiscal 2021, respectively. Accelerated depreciation methods are used for income tax purposes.
Goodwill and Other Long-Lived Assets | Goodwill and Other Long-Lived Assets: We use the purchase method of accounting for all business combinations and recognize amortizable and indefinite-lived intangible assets separately from goodwill. The acquired assets and assumed liabilities in an acquisition are measured and recognized based on their estimated fair values at the date of acquisition, with goodwill representing the excess of the purchase price over the fair value of the identifiable net assets. A bargain purchase may occur, wherein the fair value of identifiable net assets exceeds the purchase price, and a gain is then recognized in the amount of that excess. Goodwill and intangible assets with indefinite lives are not amortized, but instead are tested for impairment annually, during the fourth quarter of each fiscal year, or more frequently if events or changes in circumstances indicate that impairment may be present. Application of goodwill impairment testing involves judgment, including but not limited to, the identification of reporting units and estimation of the fair value of each reporting unit. A reporting unit is defined as an operating segment or one level below an operating segment. With the exception of Steel Processing, we test goodwill at the operating segment level as we have determined that the characteristics of the reporting units within each operating segment are similar and allow for their aggregation in accordance with the applicable accounting guidance. Steel Processing is comprised of three reporting units: Flat Rolled Steel Processing, Electrical Steel and Laser Welding. Refer to “Note E – Goodwill and Other Long-Lived Assets” for additional information on the goodwill impairment. For goodwill and indefinite-lived intangible assets, we test for impairment by first evaluating qualitative factors including macroeconomic conditions, industry and market considerations, cost factors, and overall financial performance. If there are no potential impairments raised from this evaluation, no further testing is performed. If, however, our qualitative analysis indicates it is more likely than not that the fair value is less than the carrying amount, a quantitative analysis is performed. The quantitative analysis compares the fair value of each reporting unit or indefinite-lived intangible asset to the related carrying amount, and an impairment loss is recognized in our consolidated statements of earnings equivalent to the excess of the carrying amount over the fair value. Fair value is determined based on discounted cash flows or appraised values, as appropriate. Our policy is to perform a quantitative analysis of each reporting unit at least every three to five years. We performed our annual impairment evaluation of goodwill and other indefinite-lived intangible assets during the fourth quarter of fiscal 2023 and concluded that no impairment indicators were present. We review the carrying value of our long-lived assets, including intangible assets with finite useful lives, for impairment whenever events or changes in circumstances indicate that the carrying value of an asset or asset group may not be recoverable. Impairment testing involves a comparison of the sum of the undiscounted future cash flows of the asset or asset group to its respective carrying amount. If the sum of the undiscounted future cash flows exceeds the carrying amount, then no impairment exists. If the carrying amount exceeds the sum of the undiscounted future cash flows, then a second step is performed to determine the amount of impairment, if any, to be recognized. The impairment loss recognized is equal to the amount that the carrying value of the asset or asset group exceeds its fair value. Long-lived assets held for sale are reported at the lower of cost or fair value less costs to sell and are recorded in a single line in our consolidated balance sheets. We classify assets as held for sale if we commit to a plan to sell the assets within one year and actively market the assets in their current condition for a price that is reasonable in comparison to their estimated fair value. Our impairment testing for both goodwill and other long-lived assets, including intangible assets with finite useful lives, is largely based on cash flow models that require significant judgment and require assumptions about future volume trends, revenue and expense growth rates; and, in addition, external factors such as changes in economic trends and cost of capital. Significant changes in any of these assumptions could impact the outcomes of the tests performed. See “Note E – Goodwill and Other Long-Lived Assets” for additional details regarding these assets and related impairment testing.
Equity Method Investments | Equity method investments: Investments in affiliated companies that we do not control, either through majority ownership or otherwise, are accounted for using the equity method. We review our equity method investments for impairment whenever events or changes in circumstances indicate that the carrying value of the investment might not be recoverable. Events and circumstances can include, but are not limited to: evidence we do not have the ability to recover the carrying value; the inability of the investee to sustain earnings; the current fair value of the investment is less than the carrying value; and other investors cease to provide support or reduce their financial commitment to the investee. If the fair value of the investment is less than the carrying value, and the fair value of the investment will not recover in the near term, then other-than-temporary impairment may exist. When the loss in value of an investment is determined to be other-than-temporary, we recognize an impairment in the period the conclusion is made.
Strategic Investments | Strategic Investments: From time to time, we may make investments in both privately and publicly held equity securities in which we do not have a controlling interest or significant influence. These investments are recorded at fair market value with changes in fair market value recognized in net earnings below operating income. We elected to record equity securities without readily determinable fair values at cost, less impairment, plus or minus subsequent adjustments for observable price changes in orderly transactions for the identical or a similar investment of the same issuer.
Leases | Leases: On June 1, 2019, we adopted the lease accounting standard under U.S. GAAP, ASU 2016-02, Leases (Topic 842) (“Topic 842”) using the modified retrospective approach. Under Topic 842, leases are categorized as operating or financing leases at inception. Lease assets represent our right to use an underlying asset for the lease term, and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease right of use (“ROU”) assets include any initial direct costs and prepayments less lease incentives. Lease terms include options to renew or terminate the lease when it is reasonably certain that we will exercise such options. As most of our leases do not include an implicit rate, we use our collateralized incremental borrowing rate based on the information available at the lease commencement date, in determining the present value of lease payments. Operating lease expense is recognized on a straight-line basis over the lease term and is included in cost of goods sold or SG&A expense depending on the underlying nature of the leased assets. For operating leases with variable payments dependent upon an index or rate that commenced subsequent to adoption of Topic 842, we apply the active index or rate as of the lease commencement date. Variable lease payments not based on an index or rate are not included in the operating lease liability as they cannot be reasonably estimated and are recognized in the period in which the obligation for those payments is incurred. Leases with a term of twelve months or less upon the commencement date are considered short-term leases, are not included on our consolidated balance sheets and are expensed on a straight-line basis over the lease term. Refer to “Note T – Leases” for additional information on the adoption and impact of Topic 842.
Stock-Based Compensation | Stock-Based Compensation: At May 31, 2023, we had stock-based compensation plans for our employees as well as our non-employee directors as described more fully in “Note L – Stock-Based Compensation.” All share-based awards, including grants of stock options and restricted common shares, are recorded as expense in our consolidated statements of earnings over the vesting period based on their grant date fair values. Forfeitures are recognized as they occur.
Revenue Recognition | Revenue Recognition: Revenue is recognized in accordance with U.S. GAAP, ASU 2014-09, Revenue from Contracts with Customers (Topic 606) (“Topic 606”). Under this accounting guidance, we recognize revenue upon transfer of control of promised goods or services to customers in an amount that reflects the consideration we expect to receive for those goods or services, including any variable consideration. Returns and allowances are used to record estimates of returns or other allowances resulting from quality, delivery, discounts or other issues and are estimated based on historical trends and current market conditions, with the offset to net sales. Shipping and handling costs charged to customers are treated as fulfillment activities and are recorded in both net sales and cost of goods sold at the time control is transferred to the customer. Due to the short-term nature of our contracts with customers, we have elected to apply the practical expedients under Topic 606 to: (1) expense as incurred, incremental costs of obtaining a contract; and (2) not adjust the consideration for the effects of a significant financing component for contracts with an original expected duration of one year or less. When we satisfy (or partially satisfy) a performance obligation, prior to being able to invoice the customer, we recognize an unbilled receivable when the right to consideration is unconditional and a contract asset when the right to consideration is conditional. Unbilled receivables and contract assets are included in receivables and prepaid expenses and other current assets, respectively, on our consolidated balance sheets. Additionally, we do not maintain contract liability balances, as performance obligations are satisfied prior to customer payment for product. Payments from customers are generally due within 30 to 60 days of invoicing, which generally occurs upon shipment or delivery of the goods. Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction, that we collect from a customer, are excluded from revenue. Certain contracts with customers include warranties associated with the delivered goods or services. These warranties are not considered to be separate performance obligations, and accordingly, we record an estimated liability for potential warranty costs as the goods or services are transferred. With the exception of toll processing revenue in Steel Processing, we recognize revenue at the point in time the performance obligation is satisfied and control of the product is transferred to the customer upon shipment or delivery. Generally, we receive and acknowledge purchase orders from our customers, which define the quantity, pricing, payment and other applicable terms and conditions. In some cases, we receive a blanket purchase order from our customers, which includes pricing, payment and other terms and conditions, with quantities defined at the time each customer subsequently issues periodic releases against the blanket purchase order. Toll processing revenues are recognized over time and are primarily measured using the cost-to-cost method, which we believe best depicts the transfer of control to the customer. Under the cost-to-cost method, the extent of progress towards completion is measured based on the ratio of actual costs incurred to the total estimated costs expected upon satisfying the identified performance obligation. Revenues are recorded proportionally as costs are incurred. We have elected to not disclose the value of unsatisfied performance obligations for contracts with an original expected duration of one year or less. Certain contracts contain variable consideration, which is not constrained, and primarily include estimated sales returns, customer rebates, and sales discounts which are recorded on an expected value basis. These estimates are based on historical returns, analysis of credit memo data and other known factors. We account for rebates by recording reductions to revenue for rebates in the same period the related revenue is recorded. The amount of these reductions is based upon the terms agreed to with the customer. We do not exercise significant judgments in determining the timing of satisfaction of performance obligations or the transaction price. Refer to “Note B – Revenue Recognition” for additional information.
Advertising Expense | Advertising Expense: Advertising costs are expensed to SG&A as incurred. Advertising expense was $29,537, $21,613, and $17,462 for fiscal 2023, fiscal 2022 and fiscal 2021, respectively.
Income Taxes | Income Taxes: We account for income taxes using the asset and liability method. The asset and liability method requires the recognition of deferred tax assets and liabilities for expected future tax consequences of temporary differences that currently exist between the tax basis and the financial reporting basis of our assets and liabilities. We evaluate the deferred tax assets to determine whether it is more likely than not that all, or a portion, of the deferred tax assets will not be realized and provide a valuation allowance as appropriate. Tax benefits from uncertain tax positions that are recognized in our consolidated financial statements are measured based on the largest benefit that has a greater than fifty percent likelihood of being realized upon ultimate settlement. We have reserves for income taxes and associated interest and penalties that may become payable in future years as a result of audits by taxing authorities. It is our policy to record these in income tax expense. While we believe the positions taken on previously filed tax returns are appropriate, we have established the tax and interest/penalties reserves in recognition that various taxing authorities may challenge our positions. These reserves are analyzed periodically, and adjustments are made as events occur to warrant adjustment to the reserves, such as lapsing of applicable statutes of limitations, conclusion of tax audits, additional exposure based on current calculations, identification of new issues and release of administrative guidance or court decisions affecting a particular tax issue.
Employee Pension Plans | Employee Pension Plans: Defined benefit pension and other post-employment benefit (“OPEB”) plan obligations are remeasured at least annually as of May 31 based on the present value of projected future benefit payments for all participants for services rendered to date. The measurement of projected future benefits is dependent on the provisions of each specific plan, demographics of the group covered by the plan, and other key measurement assumptions. Net periodic benefit costs, including service cost, interest cost, and expected return on assets, are determined using assumptions regarding the benefit obligation and the fair value of plan assets as of the beginning of each year. The funded status of the benefit plans, which represents the difference between the benefit obligation and the fair value of plan assets, is calculated on a plan-by-plan basis. The benefit obligation and related funded status are determined using assumptions as of the end of each year. Net periodic benefit cost is included in other income (expense) in our consolidated statements of earnings, except for the service cost component, which is recorded in SG&A expense. Refer to “Note M – Employee Pension Plans” for additional information.
Business Combinations | Business Combinations: We account for business combinations using the acquisition method of accounting, which requires that once control is obtained, all the assets acquired and liabilities assumed are recorded at their respective fair values at the date of acquisition. The determination of fair values of identifiable assets and liabilities requires significant judgments and estimates and the use of valuation techniques when market value is not readily available. For the valuation of intangible assets acquired in a business combination, we typically use an income approach. The purchase price allocated to the intangible assets is based on unobservable assumptions, inputs and estimates, including but not limited to, forecasted revenue growth rates, projected expenses, discount rates, customer attrition rates, royalty rates, and useful lives, among others. The excess of the purchase price over the fair values of identifiable assets acquired and liabilities assumed is recorded as goodwill. During the measurement period, which is up to one year from the acquisition date, we may record adjustments to the fair value of assets acquired and liabilities assumed with the corresponding offset to goodwill. Upon the conclusion of the measurement period, any subsequent adjustments are recorded to earnings.
Self-Insurance Reserves | Self-Insurance Reserves: We self-insure most of our risks for product liability, product recall, cyber liability and pollution liability. We also self-insure a significant portion of our potential liability for workers’ compensation, general liability, property liability, automobile liability and employee medical claims. However, in order to reduce risk and better manage our overall loss exposure for these liabilities, we purchase stop-loss insurance that covers individual claims in excess of the deductible amounts. We also maintain reserves for the estimated cost to resolve certain open claims that have been made against us (which may include active product recall or replacement programs), as well as an estimate of the cost of claims that have been incurred but not reported. These estimates are based on actuarial valuations that take into consideration the historical average claim volume, the average cost for settled claims, current trends in claim costs, changes in our business and workforce, general economic factors and other assumptions believed to be reasonable under the circumstances. The estimated reserves for these liabilities could be affected if future occurrences and claims differ from the assumptions used and historical trends.
Recently Adopted Accounting Standards | Recently Adopted Accounting Standards: On June 1, 2021, we adopted ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes, which simplifies the accounting for income taxes, eliminates certain exceptions within Topic 740 and clarifies certain aspects of the current guidance to promote consistency among reporting entities. The adoption of the accounting standard did not have a material impact on our consolidated financial position, results of operations, or cash flows. On June 1, 2020, we adopted ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments and additional related ASUs which introduced an expected credit loss model for impairment of financial assets measured at amortized cost, including trade receivables. The model replaces the probable, incurred loss model for those assets and broadens the information an entity must consider when developing its expected credit loss estimate for assets measured at amortized cost. The adoption of the accounting standard did not have a material impact on our consolidated financial position, results of operations or cash flows.

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