Basis of Presentation, New Accounting Standards and Significant Accounting Policies (Policies)	12 Months Ended
Dec. 31, 2020
Accounting Policies [Abstract]
Basis of Presentation	Basis of PresentationThe Consolidated Financial Statements and related Notes include our parent company and all wholly-owned and majority-owned subsidiaries and joint ventures where we exercise control. Our Consolidated Financial Statements include the operations of acquired businesses after the completion of their acquisition. The decision of whether or not to consolidate an entity requires consideration of majority voting interests, as well as effective economic or other control over the entity. The Consolidated Financial Statements are prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). Our fiscal year-end is as of and for the year ended December 31 for each year presented. All intercompany transactions among our businesses have been eliminated.
New Accounting Standards	New Accounting Standards Adoption of New Accounting Standards We included below a description of recent new accounting standards that had an impact on the Company’s Consolidated Financial Statements. New accounting standards or accounting standards updates not listed below were assessed and determined to be either not applicable or did not have a material impact on the Company’s Consolidated Financial Statements or processes. Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. In June 2016, Accounting Standards Update ("ASU") 2016-13 was issued, which replaced the incurred loss impairment model with a model that reflects expected credit losses over the lifetime of the asset and requires consideration of a broader range of reasonable and supportable information to determine credit loss estimates. The guidance in this update, including the subsequent related codification amendments, changed how entities account for credit impairment from trade and other receivables, net investments arising from sales-type and direct financing leases, debt securities, purchased-credit impaired financial assets and other instruments in addition to loans. For receivables and certain other instruments that are not measured at fair value, entities are required to estimate expected credit losses. Under the expected loss model, an entity recognizes a loss upon initial recognition of the asset that reflects all future events that could lead to a loss being realized, regardless of whether it is probable that the future event will occur. The Company adopted ASU 2016-13, including the related codification amendments, in the first quarter of 2020 utilizing the modified retrospective transition method and applying the transition provisions at the effective date. The Company implemented changes to business processes and internal controls that support the new standard. As of the date of implementation on January 1, 2020, the Company recognized $11.1 million as a reduction to the opening retained earnings balance. The main drivers of the consolidated impact at transition are related to the inclusion of future economic conditions, the exclusion of freestanding credit enhancements when estimating the expected credit loss and estimating the lifetime credit losses of notes receivable. Accounting Standards Issued But Not Yet Adopted Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting and Scope. In March 2020 and January 2021, ASU 2020-04 and ASU 2021-01 were issued, respectively. The amendments provide temporary optional expedients and exceptions to the guidance on contract modifications and hedge accounting to ease the financial reporting burden in accounting for (or recognizing the effects of) contracts, hedging relationships and other transactions that reference the London Interbank Offered Rate ("LIBOR") or other interbank offered rates expected to be discontinued because of reference rate reform. The ASU’s were effective upon issuance and may be applied prospectively to contract modifications made and hedging relationships entered into or evaluated on or before December 31, 2022. The Company is evaluating the contracts that could be affected by an alternative reference rate and assessing the potential effects of the ASU’s on the consolidated financial statements but does not anticipate a material impact to its Consolidated Financial Statements or processes. Additionally, LIBOR fallback language has been included, when applicable, in new and renewed contracts entered into by the Company in preparation for transition from LIBOR to alternative reference rates when such transition occurs. Other recently issued accounting standards not yet adopted by us are not expected, upon adoption, to have a material impact on the Company’s Consolidated Financial Statements or processes.
Estimates and Assumptions	Estimates and AssumptionsThe preparation of Consolidated Financial Statements in conformity with U.S. GAAP requires us to make certain estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Accordingly, actual results could materially differ from estimated amounts. We evaluate our estimated assumptions based on historical experience and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities.
Cash and Cash Equivalents	Cash and Cash EquivalentsOur cash equivalents consist principally of overnight investments, bank money market accounts and bank time deposits which have an original maturity date of less than 90 days. These securities are carried at cost, which approximates market value.
Accounts Receivable and Allowance for Credit Losses	Accounts Receivable and Allowance for Credit LossesAccounts receivable are measured at amortized cost. The health of our accounts receivable is continuously monitored using a risk-based model, taking into consideration both the timeliness and predictability of collections from our customers. We maintain a provision for estimated credit losses based upon our historical experience with our customers, along with any specific customer collection issues that we have identified from current financial information and business prospects, as well as any political or economic conditions or other market factors, including certain assumptions based on reasonable forward-looking information from market sources. Principally based on these credit risk factors, portfolio segments are defined and an internally derived risk-based credit loss reserve is established and applied to each portfolio segment. Customer account balances that are deemed to be at high risk of collectability are reserved at higher rates than customer account balances which we expect to collect without difficulty.
Inventories	InventoriesInventories are valued primarily using weighted average cost and first-in-first-out in certain limited locations. Inventory is stated at the lower of average cost or net realizable value. When evidence exists that the net realizable value of inventory is lower than its cost, the difference is recognized as a loss in the Consolidated Statements of Income and Comprehensive Income in the period in which it occurs. We utilize a variety of fuel indices and other indicators to calculate the net realizable value. Components of inventory include fuel purchase costs, any related transportation or distribution costs and changes in the estimated fair market values for inventories included in a fair value hedge relationship.
Business Combinations	Business Combinations A business combination occurs when an entity obtains control of a business by acquiring its net assets, or some or all of its equity interests. Before applying the acquisition method, we determine whether a transaction meets the definition of a business combination. For a transaction to be accounted for as a business combination, the entity or net assets acquired must meet the definition of a business as defined in ASC 805. Under the acquisition method, the purchase price is allocated to all identifiable assets acquired, all liabilities assumed and any noncontrolling interest at the fair value as of the acquisition date. Any residual difference with the consideration transferred is recognized as Goodwill. Goodwill arises because the purchase price paid reflects numerous factors, including the strategic value and expected synergies that the acquisition would bring to our existing operations. Acquisition-related costs incurred in connection with a business combination are expensed as incurred. If the assets acquired do not meet the definition of a business, we account for the transaction as an asset acquisition and goodwill is not recognized but rather any residual difference with the consideration transferred is allocated on a relative fair value basis to all qualifying identifiable net assets acquired.
Fair Value	Fair Value Fair value is the price to sell an asset or transfer a liability and therefore represents an exit price in the principal market (or in the absence of a principal market, the most advantageous market). It represents a market-based measurement that contemplates a hypothetical transaction between market participants at the measurement date. Depending on the type of assets, we calculate the fair value using the income approach (e.g., based on the present value of estimated future cash flows), the market approach or a combination of both. The unique characteristics of an asset or liability and the availability of observable prices affect the number of valuation approaches and/or techniques used in a fair value analysis. We measure fair value using observable and unobservable inputs. We give the highest priority to quoted prices (unadjusted) in active markets for identical assets or liabilities (Level 1 inputs) and the lowest priority to unobservable inputs (Level 3 inputs). We apply the following fair value hierarchy: •Level 1 - Quoted prices (unadjusted) in active markets for identical assets and liabilities. •Level 2 - Quoted prices in non-active markets or in active markets for similar assets or liabilities, observable inputs other than quoted prices; and inputs that are not directly observable but are corroborated by observable market data. •Level 3 - Inputs that are unobservable.
Derivatives	DerivativesOur derivative contracts are recognized at their estimated fair market value. The fair value of our derivatives is derived using observable and certain unobservable inputs, such as basis differentials, which are based on the difference between the historical prices of our prior transactions and underlying observable data; and incorporates the effect of nonperformance risk.If the derivative instrument is not designated as a hedge, changes in the estimated fair market value are recognized as a component of Revenue, Cost of revenue or Other income (expense), net (based on the underlying transaction type) in the Consolidated Statements of Income and Comprehensive Income. Derivatives that qualify for hedge accounting may be designated as either a fair value or cash flow hedge. At the inception, and on an ongoing basis, we assess the hedging relationship to determine its effectiveness in offsetting changes in cash flows or fair value attributable to the hedged risk. For our fair value hedges, changes in the estimated fair market value of the hedging instrument and the hedged item are recognized in the same line item as the underlying transaction type in the Consolidated Statements of Income and Comprehensive Income. For our cash flow hedges, the changes in the fair market value of the hedging instrument are initially recognized in other comprehensive income as a separate component of shareholders’ equity and subsequently reclassified into the same line item as the underlying forecasted transaction in the Consolidated Statements of Income and Comprehensive Income when both are settled or deemed probable of not occurring. Cash flows for our hedging instruments used in our hedges are classified in the same category as the cash flow from the hedged items. If for any reason hedge accounting is discontinued, then any cash flows subsequent to the date of discontinuance will be classified in a manner consistent with the nature of the instrument. For more information on our derivatives, see "Note 4. Derivatives Instruments."
Property and Equipment	Property and Equipment Property and equipment are carried at cost less accumulated depreciation and amortization. Depreciation and amortization are calculated primarily by using the straight-line method over the estimated useful lives of the assets. Costs of major additions and improvements are capitalized while expenditures for maintenance and repairs, which do not extend the life of the asset, are expensed. Upon sale or disposition of property and equipment, the cost and related accumulated depreciation and amortization are eliminated from the accounts and any resulting gain or loss is credited or charged to income. Long-lived assets held and used by us (including property and equipment) are assessed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Purchases of computer software and external costs and certain internal costs directly associated with developing significant computer software applications for internal use are capitalized within property and equipment, which also includes hosting arrangements when we have the contractual right to take possession of the software at any time during the hosting period and it is feasible for us to either run the software in our own hardware or contract with another unrelated party to host the software. Amortization of such costs is calculated primarily by using the straight-line method over the estimated useful life of the software.
Goodwill	Goodwill Goodwill is evaluated for impairment at the reporting unit level, initially based on an assessment of qualitative factors to determine whether it is more likely than not that the fair value of any individual reporting unit is less than its carrying amount. Management conducts an impairment assessment as of December 31 of each year, or more frequently if events or circumstances indicate that the carrying value of goodwill may be impaired. To determine whether goodwill is impaired, we compare the fair value of the reporting units to which goodwill was assigned to their respective carrying values. In calculating fair value, we use a combination of both an income and market approach as our primary indicator of fair value. Under the market approach, we use a selection of global companies that correspond to each reporting unit to derive a market-based multiple. Under the income approach, we calculate the fair value of a reporting unit based on the present value of estimated future cash flows. The estimated future cash flows are based on the best information available as of the testing date, including our annual operating plan, which is completed annually during the fourth quarter and is approved by our Board of Directors. The estimated cash flows are discounted using rates that correspond to a weighted-average cost of capital consistent with those used internally for investment decisions. All our estimates are considered supportable assumptions that we believe are reasonable and are based on a number of factors including industry experience, internal benchmarks, and the economic environment.
Identifiable Intangible Assets	Identifiable Intangible AssetsIn connection with our acquisitions, we record identifiable intangible assets at fair value. Identifiable intangible assets subject to amortization are amortized over their estimated useful lives and are assessed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. We assess identifiable intangible assets not subject to amortization at least annually during the fourth quarter of each year for potential impairment. This analysis generally involves the use of qualitative and quantitative analyses to estimate whether the estimated future cash flows generated as a result of these assets will be greater than or equal to the carrying value assigned to such assets.
Investments	Investments We held investments where we own less than 50% of the outstanding voting shares of the company. We account for investments primarily under the equity method as we have the ability to exercise significant influence over the operating and financial policies of the investee, but do not have control. The carrying amount of an equity method investment is increased to reflect our share of income and is reduced to reflect our share of losses of the investee, dividends received and other-than-temporary impairments. Investments accounted for under the equity method are assessed whenever events or changes in circumstances indicate that the carrying amount of an investment may not be recoverable. We assess our intent and/or ability to recover the carrying amount of the investment over a long period. However, if the fair value of the investment is less than its carrying amount, and the investment will not recover in the near term, then an other-than-temporary impairment is recognized. Impairments are classified as Impairments within the Consolidated Statements of Income and Comprehensive Income.
Revenue Recognition	Revenue Recognition The majority of our consolidated revenues are generated through the sale of fuel and fuel-related products. We generally recognize fuel sales and services revenue on a gross basis as we have control of the products or services before they are delivered to our customers. In drawing this conclusion, we considered various factors, including inventory risk management, latitude in establishing the sales price, discretion in the supplier selection and that we are normally the primary obligor in our sales arrangements. Revenue from the sale of fuel is recognized when our customers obtain control of the fuel, which is typically upon delivery of each promised gallon or barrel to an agreed-upon delivery point. Revenue from services, including energy procurement advisory services and international trip planning support, and transaction and payment management processing, are recognized over the contract period when services have been performed and we have the right to invoice for those services. We have elected not to adjust the contract consideration for the effect of a significant financing component for any contract in which the period between when the Company transfers the promises in the contract and when the customer pays is a year or less. In addition, we have elected to exclude from the transaction price the amount of certain taxes assessed by a government authority that we collect (or recover) from our customer and remit in connection with our sales transactions, such as certain sales or excise taxes. Our contracts with customers, which are mainly master sales agreements in combination with different types of nominations or standalone agreements, primarily require us to deliver fuel and fuel-related products, while other arrangements require us to complete agreed-upon services. As our contracts go through a formal credit approval process, we only enter into contracts when we determine the amount we expect to be entitled to is probable of collections. Our billing and payment terms generally include monthly invoicing for the prior month's activities with average payment terms of one to three months. We have elected not to adjust the contract consideration for the effect of a significant financing component for any contract in which the period between when the Company transfers the promises in the contract and when the customer pays is a year or less. However, since our contracts have relatively short payment terms, they do not typically result in the provision of significant financing. We generally recognize fuel sales and services revenue on a gross basis as we have control of the products or services before they are delivered to our customers. In drawing this conclusion, we considered various factors, including inventory risk management, latitude in establishing the sales price, discretion in the supplier selection and that we are normally the primary obligor in our sales arrangements. The majority of our consolidated revenues are generated through the sale of fuel and fuel-related products. Revenue from the sale of fuel is recognized when our customers obtain control of the fuel, which is typically upon delivery of each promised gallon or barrel to an agreed-upon delivery point. We have determined that each gallon or barrel represents a separate performance obligation, and revenue is recognized at the point in time when control of each gallon or barrel transfer to our customer. We may also incur costs for the transportation of products to the delivery points. Reimbursements of such costs are normally included in the transaction price. In the limited cases, when we coordinate shipping and handling activities after our customer obtains control of goods or services, we have elected to account for these shipping and handling costs as activities to fulfill the promise to transfer the goods. Our contracts may contain fixed or variable pricing (such as market or index-based pricing) or some combination of those. The pricing structures of our fuel sales that involve variable prices, such as market or index-based pricing or reimbursements of costs, typically correspond to our efforts to transfer the promised fuel, and we recognize revenue based on those variable prices for the related gallons or barrels that we have delivered. In addition, we have elected to exclude from the transaction price the amount of certain taxes assessed by a government authority that we collect (or recover) from our customer and remit in connection with our sales transactions, such as certain sales or excise taxes. Within our land and aviation segments, contracts with customers may include multi-year sales contracts, which are priced at market-based indices and require minimum volume purchase commitments from our customers. The consideration expected from these contracts is considered variable due to the market-based pricing and the variability is not resolved until delivery is made to our customers. We have elected to apply the optional exemption from estimating and disclosing the variable consideration from our remaining performance obligations under these contracts. We also have fixed price fuel and fuel-related product sale contracts with a contract term of less than one year (typically one month). For these contracts, we apply the optional exemption, to not disclose the amount of transaction price allocated to remaining performance obligations. We also apply this exemption to those contracts in which the right to consideration corresponds directly with the value to the customer of the entity's performance to date. In limited cases, we may have multi-period fixed price contracts. Because our long-term supply arrangements that exceed one year are typically based on market index prices as previously discussed, the transaction price associated with remaining performance obligations under multi-year fixed price fuel sale contracts are not significant. We also earn a minor amount of revenue from contracts to provide services, including energy procurement advisory services, international trip planning support, and transaction and payment management processing, which typically represent a single performance obligation for the series of daily services. We generally recognize revenue over the contract period when services have been performed based on our right to invoice for those services. Other revenues (excluded from ASC 606) in the table above includes revenue from leases and other transactions that we account for following separate guidance. Accounts receivable, contract assets and contract liabilities The nature of the receivables related to revenue from contracts with customers and other revenue, are substantially similar, given that they are generated from transactions with the same type of counterparties (e.g., separate fuel sales and storage lease with the same counterparty) and are entered into considering the same credit approval and monitoring procedures for all customers. As such, we believe the risk associated with the cash flows from the different types of receivables is not meaningful to separately disaggregate the Accounts receivable balance presented on our Consolidated Balance Sheet.
Share-Based Payment Awards	Share-Based Payment AwardsWe account for share-based payment awards on a fair value basis of the equity instrument issued. Under fair value accounting, the grant-date fair value of the share-based payment award is amortized as compensation expense, on a straight-line basis, over the service period (generally, the vesting period) for both graded and cliff vesting awards. We have elected to account for forfeitures as they occur.
Foreign Currency	Foreign CurrencyThe functional currency of our U.S. and foreign subsidiaries is the U.S. dollar, except for certain subsidiaries which utilize their respective local currency as their functional currency. Foreign currency transaction gains and losses are recognized upon settlement of foreign currency transactions. In addition, for unsettled foreign currency transactions, foreign currency transaction gains and losses are recognized for changes between the transaction exchange rates and month-end exchange rates. Foreign currency transaction gains and losses are included in other income (expense), net, in the accompanying Consolidated Statements of Income and Comprehensive Income in the period incurred. Revenues and expenses of the subsidiaries that have a functional currency other than the U.S. dollar have been translated into U.S. dollars at average exchange rates prevailing during the period. The assets and liabilities of these subsidiaries have been translated at the rates of exchange on the balance sheet dates. The resulting translation gain and loss adjustments are recorded in accumulated other comprehensive income as a separate component of shareholders’ equity.
Income Taxes	Income Taxes Income taxes are accounted for under the asset and liability method. Under this method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases, and operating loss and income tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted income tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in income tax rates is recorded as a component of the income tax provision in the period that includes the enactment date. Regular assessments are made on the likelihood that our deferred tax assets will be recovered from our future taxable income. Our evaluation is based on estimates, assumptions, and includes an analysis of available positive and negative evidence, giving weight based on the evidence’s relative objectivity. Sources of positive evidence include estimates of future taxable income, future reversal of existing taxable temporary differences, taxable income in carryback years, and available tax planning strategies. Sources of negative evidence include current and cumulative losses in recent years, losses expected in early future years, any history of operating losses or tax credit carryforwards expiring unused, and unsettled circumstances that, if unfavorably resolved, would adversely affect future profit levels. The remaining carrying value of our deferred tax assets, after recording the valuation allowance on our deferred tax assets, is based on our present belief that it is more likely than not that we will be able to generate sufficient future taxable income in certain tax jurisdictions to utilize such deferred tax assets. The amount of the remaining deferred tax assets considered recoverable could be adjusted if our estimates of future taxable income during the carryforward period change favorably or unfavorably. To the extent we believe that it is more likely than not that some or all of the remaining deferred tax assets will not be realized, we must establish a valuation allowance against those deferred tax assets, resulting in additional income tax expense in the period such determination is made. To the extent a valuation allowance currently exists, we will continue to monitor all positive and negative evidence until we believe it is more likely than not that it is no longer necessary, resulting in an income tax benefit in the period such determination is made. Significant judgment is required in evaluating our tax positions, and in determining our provisions for income taxes, our deferred tax assets and liabilities and any valuation allowance recorded against our net deferred tax assets. We establish reserves when, despite our belief that the income tax return positions are fully supportable, certain positions are likely to be challenged and we may ultimately not prevail in defending those positions.
Earnings per Common Share	Earnings per Common ShareBasic earnings per common share is computed by dividing net income attributable to World Fuel and available to common shareholders by the sum of the weighted average number of shares of common stock. Diluted earnings per common share is computed by dividing net income attributable to World Fuel and available to common shareholders by the sum of the weighted average number of shares of common stock and the number of additional shares of common stock that would have been outstanding if our outstanding potentially dilutive securities had been issued. Potentially dilutive securities include awards of restricted stock subject to forfeitable dividends, non-vested restricted stock units ("RSUs"), performance stock units where the performance requirements have been met, and settled stock appreciation rights awards ("SSARs"). The dilutive effect of potentially dilutive securities is reflected in diluted earnings per common share by application of the treasury stock method, except if its impact is anti-dilutive. Under the treasury stock method, an increase in the fair market value of our common stock can result in a greater dilutive effect from potentially dilutive securities.
Leases	Leases We adopted ASU 2016-02, including the related codification amendments, in the first quarter of 2019 utilizing the modified retrospective transition method and applying the transition provisions at the effective date. We determine if an arrangement is a lease at inception. Determining whether a contract contains a lease includes judgment regarding whether the contract conveys the right to control the use of identified property or equipment for a period of time in exchange for consideration. We account for our lease-related assets and liabilities based on their classification as operating leases or finance leases, following the relevant accounting guidance. For all the lessee arrangements, we have elected an accounting policy to combine non-lease components with the related-lease components and treat the combined items as a lease for accounting purposes. We measure lease related assets and liabilities based on the present value of lease payments, including in-substance fixed payments, variable payments that depend on an index or rate measured at the commencement date, and the amount we believe is probable we will pay the lessor under residual value guarantees when applicable. We discount lease payments based on our estimated incremental borrowing rate at lease commencement (or modification), which is primarily based on our estimated credit rating, the lease term at commencement, and the contract currency of the lease arrangement. We have elected to exclude short term leases (leases with an original lease term less than one year) from the measurement of lease-related assets and liabilities. We test right-of-use asset in an operating or finance lease at the asset group level (because these assets are long-lived nonfinancial assets and should be accounted for the same way as other long-lived nonfinancial assets) whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable.
Loss Contingencies	Loss Contingencies In determining whether an accrual for a loss contingency is required, we first assess the likelihood of occurrence of the future event or events that will confirm the loss. When a loss is probable (the future event or events are likely to occur) and the amount of the loss can be reasonably estimated, the estimated loss is accrued. If the reasonable estimate of the loss is a range and an amount within the range appears to be a better estimate than any other amount within the range, that amount should be accrued. However, if no amount within the range is a better estimate, the minimum amount in the range should be accrued. When a loss is reasonably possible (the chance of the future event or events occurring is more than remote but less than likely), no accrual is recognized.

Basis of Presentation, New Accounting Standards and Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2020

Basis of PresentationThe Consolidated Financial Statements and related Notes include our parent company and all wholly-owned and majority-owned subsidiaries and joint ventures where we exercise control. Our Consolidated Financial Statements include the operations of acquired businesses after the completion of their acquisition. The decision of whether or not to consolidate an entity requires consideration of majority voting interests, as well as effective economic or other control over the entity. The Consolidated Financial Statements are prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). Our fiscal year-end is as of and for the year ended December 31 for each year presented. All intercompany transactions among our businesses have been eliminated.

New Accounting Standards

Adoption of New Accounting Standards

We included below a description of recent new accounting standards that had an impact on the Company’s Consolidated Financial Statements. New accounting standards or accounting standards updates not listed below were assessed and determined to be either not applicable or did not have a material impact on the Company’s Consolidated Financial Statements or processes.

Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. In June 2016, Accounting Standards Update ("ASU") 2016-13 was issued, which replaced the incurred loss impairment model with a model that reflects expected credit losses over the lifetime of the asset and requires consideration of a broader range of reasonable and supportable information to determine credit loss estimates. The guidance in this update, including the subsequent related codification amendments, changed how entities account for credit impairment from trade and other receivables, net investments arising from sales-type and direct financing leases, debt securities, purchased-credit impaired financial assets and other instruments in addition to loans. For receivables and certain other instruments that are not measured at fair value, entities are required to estimate expected credit losses. Under the expected loss model, an entity recognizes a loss upon initial recognition of the asset that reflects all future events that could lead to a loss being realized, regardless of whether it is probable that the future event will occur.

The Company adopted ASU 2016-13, including the related codification amendments, in the first quarter of 2020 utilizing the modified retrospective transition method and applying the transition provisions at the effective date.

The Company implemented changes to business processes and internal controls that support the new standard. As of the date of implementation on January 1, 2020, the Company recognized $11.1 million as a reduction to the opening retained earnings balance. The main drivers of the consolidated impact at transition are related to the inclusion of future economic conditions, the exclusion of freestanding credit enhancements when estimating the expected credit loss and estimating the lifetime credit losses of notes receivable.

Accounting Standards Issued But Not Yet Adopted

Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting and Scope. In March 2020 and January 2021, ASU 2020-04 and ASU 2021-01 were issued, respectively. The amendments provide temporary optional expedients and exceptions to the guidance on contract modifications and hedge accounting to ease the financial reporting burden in accounting for (or recognizing the effects of) contracts, hedging relationships and other transactions that reference the London Interbank Offered Rate ("LIBOR") or other interbank offered rates expected to be discontinued because of reference rate reform. The ASU’s were effective upon issuance and may be applied prospectively to contract modifications made and hedging relationships entered into or evaluated on or before December 31, 2022. The Company is evaluating the contracts that could be affected by an alternative reference rate and assessing the potential effects of the ASU’s on the consolidated financial statements but does not anticipate a material impact to its Consolidated Financial Statements or processes. Additionally, LIBOR fallback language has been included, when applicable, in new and renewed contracts entered into by the Company in preparation for transition from LIBOR to alternative reference rates when such transition occurs.

Other recently issued accounting standards not yet adopted by us are not expected, upon adoption, to have a material impact on the Company’s Consolidated Financial Statements or processes.

Estimates and Assumptions

Estimates and AssumptionsThe preparation of Consolidated Financial Statements in conformity with U.S. GAAP requires us to make certain estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Accordingly, actual results could materially differ from estimated amounts. We evaluate our estimated assumptions based on historical experience and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities.

Cash and Cash Equivalents

Cash and Cash EquivalentsOur cash equivalents consist principally of overnight investments, bank money market accounts and bank time deposits which have an original maturity date of less than 90 days. These securities are carried at cost, which approximates market value.

Accounts Receivable and Allowance for Credit Losses

Accounts Receivable and Allowance for Credit LossesAccounts receivable are measured at amortized cost. The health of our accounts receivable is continuously monitored using a risk-based model, taking into consideration both the timeliness and predictability of collections from our customers. We maintain a provision for estimated credit losses based upon our historical experience with our customers, along with any specific customer collection issues that we have identified from current financial information and business prospects, as well as any political or economic conditions or other market factors, including certain assumptions based on reasonable forward-looking information from market sources. Principally based on these credit risk factors, portfolio segments are defined and an internally derived risk-based credit loss reserve is established and applied to each portfolio segment. Customer account balances that are deemed to be at high risk of collectability are reserved at higher rates than customer account balances which we expect to collect without difficulty.

Inventories

InventoriesInventories are valued primarily using weighted average cost and first-in-first-out in certain limited locations. Inventory is stated at the lower of average cost or net realizable value. When evidence exists that the net realizable value of inventory is lower than its cost, the difference is recognized as a loss in the Consolidated Statements of Income and Comprehensive Income in the period in which it occurs. We utilize a variety of fuel indices and other indicators to calculate the net realizable value. Components of inventory include fuel purchase costs, any related transportation or distribution costs and changes in the estimated fair market values for inventories included in a fair value hedge relationship.

Business Combinations

A business combination occurs when an entity obtains control of a business by acquiring its net assets, or some or all of its equity interests.

Before applying the acquisition method, we determine whether a transaction meets the definition of a business combination. For a transaction to be accounted for as a business combination, the entity or net assets acquired must meet the definition of a business as defined in ASC 805. Under the acquisition method, the purchase price is allocated to all identifiable assets acquired, all liabilities assumed and any noncontrolling interest at the fair value as of the acquisition date. Any residual difference with the consideration transferred is recognized as Goodwill. Goodwill arises because the purchase price paid reflects numerous factors, including the strategic value and expected synergies that the acquisition would bring to our existing operations. Acquisition-related costs incurred in connection with a business combination are expensed as incurred.

If the assets acquired do not meet the definition of a business, we account for the transaction as an asset acquisition and goodwill is not recognized but rather any residual difference with the consideration transferred is allocated on a relative fair value basis to all qualifying identifiable net assets acquired.

Fair Value

Fair value is the price to sell an asset or transfer a liability and therefore represents an exit price in the principal market (or in the absence of a principal market, the most advantageous market). It represents a market-based measurement that contemplates a hypothetical transaction between market participants at the measurement date.

Depending on the type of assets, we calculate the fair value using the income approach (e.g., based on the present value of estimated future cash flows), the market approach or a combination of both. The unique characteristics of an asset or liability and the availability of observable prices affect the number of valuation approaches and/or techniques used in a fair value analysis. We measure fair value using observable and unobservable inputs. We give the highest priority to quoted prices (unadjusted) in active markets for identical assets or liabilities (Level 1 inputs) and the lowest priority to unobservable inputs (Level 3 inputs).

We apply the following fair value hierarchy:

•Level 1 - Quoted prices (unadjusted) in active markets for identical assets and liabilities.

•Level 2 - Quoted prices in non-active markets or in active markets for similar assets or liabilities, observable inputs other than quoted prices; and inputs that are not directly observable but are corroborated by observable market data.

•Level 3 - Inputs that are unobservable.

Derivatives

DerivativesOur derivative contracts are recognized at their estimated fair market value. The fair value of our derivatives is derived using observable and certain unobservable inputs, such as basis differentials, which are based on the difference between the historical prices of our prior transactions and underlying observable data; and incorporates the effect of nonperformance risk.If the derivative instrument is not designated as a hedge, changes in the estimated fair market value are recognized as a component of Revenue, Cost of revenue or Other income (expense), net (based on the underlying transaction type) in the Consolidated Statements of Income and Comprehensive Income. Derivatives that qualify for hedge accounting may be designated as either a fair value or cash flow hedge. At the inception, and on an ongoing basis, we assess the hedging relationship to determine its effectiveness in offsetting changes in cash flows or fair value attributable to the hedged risk. For our fair value hedges, changes in the estimated fair market value of the hedging instrument and the hedged item are recognized in the same line item as the underlying transaction type in the Consolidated Statements of Income and Comprehensive Income. For our cash flow hedges, the changes in the fair market value of the hedging instrument are initially recognized in other comprehensive income as a separate component of shareholders’ equity and subsequently reclassified into the same line item as the underlying forecasted transaction in the Consolidated Statements of Income and Comprehensive Income when both are settled or deemed probable of not occurring. Cash flows for our hedging instruments used in our hedges are classified in the same category as the cash flow from the hedged items. If for any reason hedge accounting is discontinued, then any cash flows subsequent to the date of discontinuance will be classified in a manner consistent with the nature of the instrument. For more information on our derivatives, see "Note 4. Derivatives Instruments."

Property and Equipment

Property and equipment are carried at cost less accumulated depreciation and amortization. Depreciation and amortization are calculated primarily by using the straight-line method over the estimated useful lives of the assets. Costs of major additions and improvements are capitalized while expenditures for maintenance and repairs, which do not extend the life of the asset, are expensed. Upon sale or disposition of property and equipment, the cost and related accumulated depreciation and amortization are eliminated from the accounts and any resulting gain or loss is credited or charged to income. Long-lived assets held and used by us (including property and equipment) are assessed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable.

Purchases of computer software and external costs and certain internal costs directly associated with developing significant computer software applications for internal use are capitalized within property and equipment, which also includes hosting arrangements when we have the contractual right to take possession of the software at any time during the hosting period and it is feasible for us to either run the software in our own hardware or contract with another unrelated party to host the software. Amortization of such costs is calculated primarily by using the straight-line method over the estimated useful life of the software.

Goodwill

Goodwill is evaluated for impairment at the reporting unit level, initially based on an assessment of qualitative factors to determine whether it is more likely than not that the fair value of any individual reporting unit is less than its carrying amount. Management conducts an impairment assessment as of December 31 of each year, or more frequently if events or circumstances indicate that the carrying value of goodwill may be impaired.

To determine whether goodwill is impaired, we compare the fair value of the reporting units to which goodwill was assigned to their respective carrying values. In calculating fair value, we use a combination of both an income and market approach as our primary indicator of fair value. Under the market approach, we use a selection of global companies that correspond to each reporting unit to derive a market-based multiple. Under the income approach, we calculate the fair value of a reporting unit based on the present value of estimated future cash flows. The estimated future cash flows are based on the best information available as of the testing date, including our annual operating plan, which is completed annually during the fourth quarter and is approved by our Board of Directors. The estimated cash flows are discounted using rates that correspond to a weighted-average cost of capital consistent with those used internally for investment decisions. All our estimates are considered supportable assumptions that we believe are reasonable and are based on a number of factors including industry experience, internal benchmarks, and the economic environment.

Identifiable Intangible Assets

Identifiable Intangible AssetsIn connection with our acquisitions, we record identifiable intangible assets at fair value. Identifiable intangible assets subject to amortization are amortized over their estimated useful lives and are assessed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. We assess identifiable intangible assets not subject to amortization at least annually during the fourth quarter of each year for potential impairment. This analysis generally involves the use of qualitative and quantitative analyses to estimate whether the estimated future cash flows generated as a result of these assets will be greater than or equal to the carrying value assigned to such assets.

Investments

We held investments where we own less than 50% of the outstanding voting shares of the company. We account for investments primarily under the equity method as we have the ability to exercise significant influence over the operating and financial policies of the investee, but do not have control.

The carrying amount of an equity method investment is increased to reflect our share of income and is reduced to reflect our share of losses of the investee, dividends received and other-than-temporary impairments. Investments accounted for under the equity method are assessed whenever events or changes in circumstances indicate that the carrying amount of an investment may not be recoverable.

We assess our intent and/or ability to recover the carrying amount of the investment over a long period. However, if the fair value of the investment is less than its carrying amount, and the investment will not recover in the near term, then an other-than-temporary impairment is recognized. Impairments are classified as Impairments within the Consolidated Statements of Income and Comprehensive Income.

Revenue Recognition

The majority of our consolidated revenues are generated through the sale of fuel and fuel-related products. We generally recognize fuel sales and services revenue on a gross basis as we have control of the products or services before they are delivered to our customers. In drawing this conclusion, we considered various factors, including inventory risk management, latitude in establishing the sales price, discretion in the supplier selection and that we are normally the primary obligor in our sales arrangements.

Revenue from the sale of fuel is recognized when our customers obtain control of the fuel, which is typically upon delivery of each promised gallon or barrel to an agreed-upon delivery point. Revenue from services, including energy procurement advisory services and international trip planning support, and transaction and payment management processing, are recognized over the contract period when services have been performed and we have the right to invoice for those services.

We have elected not to adjust the contract consideration for the effect of a significant financing component for any contract in which the period between when the Company transfers the promises in the contract and when the customer pays is a year or less. In addition, we have elected to exclude from the transaction price the amount of certain taxes assessed by a government authority that we collect (or recover) from our customer and remit in connection with our sales transactions, such as certain sales or excise taxes.

Our contracts with customers, which are mainly master sales agreements in combination with different types of nominations or standalone agreements, primarily require us to deliver fuel and fuel-related products, while other arrangements require us to complete agreed-upon services. As our contracts go through a formal credit approval process, we only enter into contracts when we determine the amount we expect to be entitled to is probable of collections. Our billing and payment terms generally include monthly invoicing for the prior month's activities with average payment terms of one to three months. We have elected not to adjust the contract consideration for the effect of a significant financing component for any contract in which the period between when the Company transfers the promises in the contract and when the customer pays is a year or less. However, since our contracts have relatively short payment terms, they do not typically result in the provision of significant financing.

We generally recognize fuel sales and services revenue on a gross basis as we have control of the products or services before they are delivered to our customers. In drawing this conclusion, we considered various factors, including inventory risk management, latitude in establishing the sales price, discretion in the supplier selection and that we are normally the primary obligor in our sales arrangements.

The majority of our consolidated revenues are generated through the sale of fuel and fuel-related products. Revenue from the sale of fuel is recognized when our customers obtain control of the fuel, which is typically upon delivery of each promised gallon or barrel to an agreed-upon delivery point. We have determined that each gallon or barrel represents a separate performance obligation, and revenue is recognized at the point in time when control of each gallon or barrel transfer to our customer. We may also incur costs for the transportation of products to the delivery points. Reimbursements of such costs are normally included in the transaction price. In the limited cases, when we coordinate shipping and handling activities after our customer obtains control of goods or services, we have elected to account for these shipping and handling costs as activities to fulfill the promise to transfer the goods.

Our contracts may contain fixed or variable pricing (such as market or index-based pricing) or some combination of those. The pricing structures of our fuel sales that involve variable prices, such as market or index-based pricing or reimbursements of costs, typically correspond to our efforts to transfer the promised fuel, and we recognize revenue based on those variable prices for the related gallons or barrels that we have delivered. In addition, we have elected to exclude from the transaction price the amount of certain taxes assessed by a government authority that we collect (or recover) from our customer and remit in connection with our sales transactions, such as certain sales or excise taxes.

Within our land and aviation segments, contracts with customers may include multi-year sales contracts, which are priced at market-based indices and require minimum volume purchase commitments from our customers. The consideration expected from these contracts is considered variable due to the market-based pricing and the variability is not resolved until delivery is made to our customers. We have elected to apply the optional exemption from estimating and disclosing the variable consideration from our remaining performance obligations under these contracts.

We also have fixed price fuel and fuel-related product sale contracts with a contract term of less than one year (typically one month). For these contracts, we apply the optional exemption, to not disclose the amount of transaction price allocated to remaining performance obligations. We also apply this exemption to those contracts in which the right to consideration corresponds directly with the value to the customer of the entity's performance to date. In limited cases, we may have multi-period fixed price contracts. Because our long-term supply arrangements that exceed one year are typically based on market index prices as previously discussed, the transaction price associated with remaining performance obligations under multi-year fixed price fuel sale contracts are not significant.

We also earn a minor amount of revenue from contracts to provide services, including energy procurement advisory services, international trip planning support, and transaction and payment management processing, which typically represent a single performance obligation for the series of daily services. We generally recognize revenue over the contract period when services have been performed based on our right to invoice for those services.

Other revenues (excluded from ASC 606) in the table above includes revenue from leases and other transactions that we account for following separate guidance.

Accounts receivable, contract assets and contract liabilities

The nature of the receivables related to revenue from contracts with customers and other revenue, are substantially similar, given that they are generated from transactions with the same type of counterparties (e.g., separate fuel sales and storage lease with the same counterparty) and are entered into considering the same credit approval and monitoring procedures for all customers. As such, we believe the risk associated with the cash flows from the different types of receivables is not meaningful to separately disaggregate the Accounts receivable balance presented on our Consolidated Balance Sheet.

Share-Based Payment Awards

Share-Based Payment AwardsWe account for share-based payment awards on a fair value basis of the equity instrument issued. Under fair value accounting, the grant-date fair value of the share-based payment award is amortized as compensation expense, on a straight-line basis, over the service period (generally, the vesting period) for both graded and cliff vesting awards. We have elected to account for forfeitures as they occur.

Foreign Currency

Foreign CurrencyThe functional currency of our U.S. and foreign subsidiaries is the U.S. dollar, except for certain subsidiaries which utilize their respective local currency as their functional currency. Foreign currency transaction gains and losses are recognized upon settlement of foreign currency transactions. In addition, for unsettled foreign currency transactions, foreign currency transaction gains and losses are recognized for changes between the transaction exchange rates and month-end exchange rates. Foreign currency transaction gains and losses are included in other income (expense), net, in the accompanying Consolidated Statements of Income and Comprehensive Income in the period incurred. Revenues and expenses of the subsidiaries that have a functional currency other than the U.S. dollar have been translated into U.S. dollars at average exchange rates prevailing during the period. The assets and liabilities of these subsidiaries have been translated at the rates of exchange on the balance sheet dates. The resulting translation gain and loss adjustments are recorded in accumulated other comprehensive income as a separate component of shareholders’ equity.

Income Taxes

Income taxes are accounted for under the asset and liability method. Under this method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases, and operating loss and income tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted income tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in income tax rates is recorded as a component of the income tax provision in the period that includes the enactment date.

Regular assessments are made on the likelihood that our deferred tax assets will be recovered from our future taxable income. Our evaluation is based on estimates, assumptions, and includes an analysis of available positive and negative evidence, giving weight based on the evidence’s relative objectivity. Sources of positive evidence include estimates of future taxable income, future reversal of existing taxable temporary differences, taxable income in carryback years, and available tax planning strategies. Sources of negative evidence include current and cumulative losses in recent years, losses expected in early future years, any history of operating losses or tax credit carryforwards expiring unused, and unsettled circumstances that, if unfavorably resolved, would adversely affect future profit levels.

The remaining carrying value of our deferred tax assets, after recording the valuation allowance on our deferred tax assets, is based on our present belief that it is more likely than not that we will be able to generate sufficient future taxable income in certain tax jurisdictions to utilize such deferred tax assets. The amount of the remaining deferred tax assets considered recoverable could be adjusted if our estimates of future taxable income during the carryforward period change favorably or unfavorably. To the extent we believe that it is more likely than not that some or all of the remaining deferred tax assets will not be realized, we must establish a valuation allowance against those deferred tax assets, resulting in additional income tax expense in the period such determination is made. To the extent a valuation allowance currently exists, we will continue to monitor all positive and negative evidence until we believe it is more likely than not that it is no longer necessary, resulting in an income tax benefit in the period such determination is made.

Significant judgment is required in evaluating our tax positions, and in determining our provisions for income taxes, our deferred tax assets and liabilities and any valuation allowance recorded against our net deferred tax assets. We establish reserves when, despite our belief that the income tax return positions are fully supportable, certain positions are likely to be challenged and we may ultimately not prevail in defending those positions.

Earnings per Common Share

Earnings per Common ShareBasic earnings per common share is computed by dividing net income attributable to World Fuel and available to common shareholders by the sum of the weighted average number of shares of common stock. Diluted earnings per common share is computed by dividing net income attributable to World Fuel and available to common shareholders by the sum of the weighted average number of shares of common stock and the number of additional shares of common stock that would have been outstanding if our outstanding potentially dilutive securities had been issued. Potentially dilutive securities include awards of restricted stock subject to forfeitable dividends, non-vested restricted stock units ("RSUs"), performance stock units where the performance requirements have been met, and settled stock appreciation rights awards ("SSARs"). The dilutive effect of potentially dilutive securities is reflected in diluted earnings per common share by application of the treasury stock method, except if its impact is anti-dilutive. Under the treasury stock method, an increase in the fair market value of our common stock can result in a greater dilutive effect from potentially dilutive securities.

Leases

We adopted ASU 2016-02, including the related codification amendments, in the first quarter of 2019 utilizing the modified retrospective transition method and applying the transition provisions at the effective date.

We determine if an arrangement is a lease at inception. Determining whether a contract contains a lease includes judgment regarding whether the contract conveys the right to control the use of identified property or equipment for a period of time in exchange for consideration.

We account for our lease-related assets and liabilities based on their classification as operating leases or finance leases, following the relevant accounting guidance. For all the lessee arrangements, we have elected an accounting policy to combine non-lease components with the related-lease components and treat the combined items as a lease for accounting purposes. We measure lease related assets and liabilities based on the present value of lease payments, including in-substance fixed payments, variable payments that depend on an index or rate measured at the commencement date, and the amount we believe is probable we will pay the lessor under residual value guarantees when applicable. We discount lease payments based on our estimated incremental borrowing rate at lease commencement (or modification), which is primarily based on our estimated credit rating, the lease term at commencement, and the contract currency of the lease arrangement. We have elected to exclude short term leases (leases with an original lease term less than one year) from the measurement of lease-related assets and liabilities.

We test right-of-use asset in an operating or finance lease at the asset group level (because these assets are long-lived nonfinancial assets and should be accounted for the same way as other long-lived nonfinancial assets) whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable.

Loss Contingencies

In determining whether an accrual for a loss contingency is required, we first assess the likelihood of occurrence of the future event or events that will confirm the loss. When a loss is probable (the future event or events are likely to occur) and the amount of the loss can be reasonably estimated, the estimated loss is accrued. If the reasonable estimate of the loss is a range and an amount within the range appears to be a better estimate than any other amount within the range, that amount should be accrued. However, if no amount within the range is a better estimate, the minimum amount in the range should be accrued.

When a loss is reasonably possible (the chance of the future event or events occurring is more than remote but less than likely), no accrual is recognized.