Business And Summary Of Significant Accounting Policies (Policy)	12 Months Ended
Sep. 28, 2019
Accounting Policies [Abstract]
Description Of Business	Description of Business: Tyson Foods, Inc. (collectively, “Company,” “we,” “us” or “our”), is one of the world's largest food companies and a recognized leader in protein. Founded in 1935 by John W. Tyson and grown under three generations of family leadership, the Company has a broad portfolio of products and brands including Tyson®, Jimmy Dean®, Hillshire Farm®, Ball Park®, Wright®, Aidells®, ibp® and State Fair®. We innovate continually to make protein more sustainable, tailor food for everywhere it’s available and raise the world’s expectations for how much good food can do.
Consolidation	Consolidation: The consolidated financial statements include the accounts of all wholly-owned subsidiaries, as well as majority-owned subsidiaries over which we exercise control and, when applicable, entities for which we have a controlling financial interest or variable interest entities for which we are the primary beneficiary. All significant intercompany accounts and transactions have been eliminated in consolidation.
Fiscal Year	Fiscal Year: We utilize a 52- or 53-week accounting period ending on the Saturday closest to September 30. The Company’s accounting cycle resulted in a 52-week year for fiscal 2019, fiscal 2018, and fiscal 2017.
Cash And Cash Equivalents	Cash and Cash Equivalents: Cash equivalents consist of investments in short-term, highly liquid securities having original maturities of three months or less, which are made as part of our cash management activity. The carrying values of these assets approximate their fair values. We primarily utilize a cash management system with a series of separate accounts consisting of lockbox accounts for receiving cash, concentration accounts where funds are moved to, and several zero-balance disbursement accounts for funding payroll, accounts payable, livestock procurement, livestock grower payments, etc. As a result of our cash management system, checks issued, but not presented to the banks for payment, may result in negative book cash balances. These negative book cash balances are included in accounts payable and other current liabilities. At September 28, 2019, and September 29, 2018, checks outstanding in excess of related book cash balances totaled approximately $200 million and $220 million, respectively.
Accounts Receivable	Accounts Receivable: We record accounts receivable at net realizable value. This value includes an appropriate allowance for estimated uncollectible accounts to reflect any loss anticipated on the accounts receivable balances and charged to the provision for doubtful accounts. We calculate this allowance based on our history of write-offs, level of past due accounts and relationships with and economic status of our customers. At September 28, 2019, and September 29, 2018, our allowance for uncollectible accounts was $21 million and $19 million, respectively. We generally do not have collateral for our receivables, but we do periodically evaluate the credit worthiness of our customers.
Inventories	Inventories: Processed products, livestock and supplies and other are valued at the lower of cost or net realizable value. Cost includes purchased raw materials, live purchase costs, livestock growout costs (primarily feed, livestock grower pay and catch and haul costs), labor and manufacturing and production overhead, which are related to the purchase and production of inventories. In fiscal 2019 and fiscal 2018, the cost of inventories was determined by either the first-in, first-out ("FIFO") method or the weighted-average method
Property, Plant And Equipment	Property, Plant and Equipment: Property, plant and equipment are stated at cost and generally depreciated on a straight-line method over the estimated lives for buildings and leasehold improvements of 10 to 33 years, machinery and equipment of 3 to 12 years and land improvements and other of 3 to 20 years. Major repairs and maintenance costs that significantly extend the useful life of the related assets are capitalized. Normal repairs and maintenance costs are charged to operations. We review the carrying value of long-lived assets at each balance sheet date if indication of impairment exists. Recoverability is assessed using undiscounted cash flows based on historical results and current projections of earnings before interest, taxes, depreciation and amortization. We measure impairment as the excess of carrying value over the fair value of an asset. The fair value of an asset is generally measured using discounted cash flows including market participant assumptions of future operating results and discount rates.
Goodwill And Other Intangible Assets	Goodwill and Intangible Assets: Definite life intangibles are initially recorded at fair value and amortized over the estimated period of benefit. Brands and trademarks are generally amortized using the straight-line method over 20 years or less. Customer relationships and supply arrangements are generally amortized over 7 to 30 years based on the pattern of revenue expected to be generated from the use of the asset. The gross cost and accumulated amortization of intangible assets are removed when the recorded amounts are fully amortized and the asset is no longer in use or the contract has expired. Amortization expense is generally recognized in selling, general, and administrative expense. We review the carrying value of definite life intangibles at each balance sheet date if indication of impairment exists. Recoverability is assessed using undiscounted cash flows based on historical results and current projections of earnings before interest, taxes, depreciation and amortization. We measure impairment as the excess of carrying value over the fair value of the definite life intangible asset. We use various valuation techniques to estimate fair value, with the primary techniques being discounted cash flows, relief-from-royalty and multi-period excess earnings valuation approaches, which use significant unobservable inputs, or Level 3 inputs, as defined by the fair value hierarchy. Under these valuation approaches, we are required to make estimates and assumptions about sales, operating margins, growth rates, royalty rates and discount rates based on budgets, business plans, economic projections, anticipated future cash flows and marketplace data. Goodwill and indefinite life intangible assets are initially recorded at fair value and not amortized, but are reviewed for impairment at least annually or more frequently if impairment indicators arise. Our goodwill is allocated by reporting unit and is evaluated for impairment by first performing a qualitative assessment to determine whether a quantitative goodwill test is necessary. If it is determined, based on qualitative factors, the fair value of the reporting unit may be more likely than not less than carrying amount, or if significant changes to macro-economic factors related to the reporting unit have occurred that could materially impact fair value, a quantitative goodwill impairment test would be required. Additionally, we can elect to forgo the qualitative assessment and perform the quantitative test. The quantitative test is to identify if a potential impairment exists by comparing the fair value of a reporting unit with its carrying amount, including goodwill. If the carrying amount of the reporting unit exceeds the fair value, an impairment loss is recognized in an amount equal to that excess, not to exceed the carrying amount of goodwill. We estimate the fair value of our reporting units using a combination of various valuation techniques, including an income approach (discounted cash flow analysis) and market approaches (earnings before interest, taxes, depreciation and amortization or "EBITDA" multiples of comparable publicly-traded companies and precedent transactions). Our primary technique is discounted cash flow analysis. These approaches use significant unobservable inputs, or Level 3 inputs, as defined by the fair value hierarchy and requires us to make various judgmental assumptions about sales, operating margins, growth rates and discount rates which consider our budgets, business plans and economic projections, and are believed to reflect market participant views which would exist in an exit transaction. Assumptions are also made for varying perpetual growth rates for periods beyond the long-term business plan period. Generally, we utilize normalized operating margin assumptions based on future expectations and operating margins historically realized in the reporting units' industries. Some of the inherent estimates and assumptions used in determining fair value of the reporting units are outside the control of management, including interest rates, cost of capital, tax rates, market EBITDA comparables and credit ratings. While we believe we have made reasonable estimates and assumptions to calculate the fair value of the reporting units, it is possible a material change could occur. If our actual results are not consistent with our estimates and assumptions used to calculate fair value, it could result in additional material impairments of our goodwill. During fiscal 2019, 2018 and 2017, we determined none of our material reporting units' fair values were below its carrying value. For our indefinite life intangible assets, a qualitative assessment can also be performed to determine whether the existence of events and circumstances indicates it is more likely than not an intangible asset is impaired. Similar to goodwill, we can also elect to forgo the qualitative test for indefinite life intangible assets and perform the quantitative test. Upon performing the quantitative test, if the carrying value of the intangible asset exceeds its fair value, an impairment loss is recognized in an amount equal to that excess. The fair value of our indefinite life intangible assets is calculated principally using relief-from-royalty and multi-period excess earnings valuation approaches, which use significant unobservable inputs, or Level 3 inputs, as defined by the fair value hierarchy, and is believed to reflect market participant views which would exist in an exit transaction. Under these valuation approaches, we are required to make estimates and assumptions about sales, operating margins, growth rates, royalty rates and discount rates based on budgets, business plans, economic projections, anticipated future cash flows and marketplace data. During fiscal 2019, 2018 and 2017, we determined the fair value of each of our indefinite life intangible assets exceeded its carrying value. The discount rate used in our indefinite life intangible test decreased to 7.5% in fiscal 2019 from 8.2% in fiscal 2018.
Investments	Investments: We have investments in joint ventures and other entities. The equity method of accounting is used for entities in which we exercise significant influence but do not have a controlling interest or a variable interest in which we are the primary beneficiary. Investments not accounted for using the equity method do not have readily determinable fair values and do not qualify for the practical expedient to measure the investment using a net asset value per share. These investments are recorded using the measurement alternative in which our equity interests are recorded at cost, less impairments, adjusted for observable price changes in orderly transactions for an identical or similar investment of the same issuer. At each reporting period, we assess if these investments continue to qualify for this measurement alternative. An impairment is recorded when there is evidence that the expected fair value of the investment has declined to below the recorded cost. Adjustments to the carrying value are recorded in Other, net in the Consolidated Statements of Income. Investments in joint ventures and other entities are reported in the Consolidated Balance Sheets in Other Assets. We also have investments in marketable debt securities. We have determined all of our marketable debt securities are available-for-sale investments. These investments are reported at fair value based on quoted market prices as of the balance sheet date, with unrealized gains and losses, net of tax, recorded in other comprehensive income. The amortized cost of debt securities is adjusted for amortization of premiums and accretion of discounts to maturity. Such amortization is recorded in interest income. The cost of securities sold is based on the specific identification method. Realized gains and losses on the sale of debt securities and declines in value judged to be other than temporary are recorded on a net basis in other income. Interest and dividends on securities classified as available-for-sale are recorded in interest income.
Accrued Self-Insurance	Accrued Self-Insurance: We use a combination of insurance and self-insurance mechanisms in an effort to mitigate the potential liabilities for health and welfare, workers’ compensation, auto liability and general liability risks. Liabilities associated with our risks retained are estimated, in part, by considering claims experience, demographic factors, severity factors and other actuarial assumptions.
Defined Benefit Plans	Defined Benefit Plans: We recognize the funded status of defined pension and postretirement plans in the Consolidated Balance Sheets. The funded status is measured as the difference between the fair value of the plan assets and the benefit obligation. We measure our plan assets and liabilities at the end of our fiscal year. For a defined benefit pension plan, the benefit obligation is the projected benefit obligation; for any other defined benefit postretirement plan, such as a retiree health care plan, the benefit obligation is the accumulated postretirement benefit obligation. Any overfunded status is recognized as an asset and any underfunded status is recognized as a liability. Any transitional asset/liability, prior service cost or actuarial gain/loss that has not yet been recognized as a component of net periodic cost is recognized in accumulated other comprehensive income. Accumulated other comprehensive income will be adjusted as these amounts are subsequently recognized as a component of net periodic benefit costs in future periods.
Derivative Financial Instruments	Derivative Financial Instruments: We purchase certain commodities, such as grains and livestock in the course of normal operations. As part of our commodity risk management activities, we use derivative financial instruments, primarily futures and options, to reduce our exposure to various market risks related to these purchases, as well as to changes in foreign currency exchange and interest rates. Contract terms of a financial instrument qualifying as a hedge instrument closely mirror those of the hedged item, providing a high degree of risk reduction and correlation. Contracts designated and highly effective at meeting risk reduction and correlation criteria are recorded using hedge accounting. If a derivative instrument is accounted for as a hedge, depending on the nature of the hedge, changes in the fair value of the instrument will be offset either against the change in fair value of the hedged assets, liabilities or firm commitments through earnings or recognized in other comprehensive income (loss) until the hedged item is recognized in earnings. The ineffective portion of an instrument’s change in fair value is immediately recognized in earnings as a component of cost of sales. Instruments we hold as part of our risk management activities that do not meet the criteria for hedge accounting are marked to fair value with unrealized gains or losses reported currently in earnings. Changes in market value of derivatives used in our risk management activities relating to forward sales contracts are recorded in sales. Changes in market value of derivatives used in our risk management activities surrounding inventories on hand or anticipated purchases of inventories are recorded in cost of sales. Changes in market value of derivatives used in our risk management activities related to interest rates are recorded in interest expense. Changes in the market value of derivatives used in our risk management activities related to foreign exchange contracts are recorded in other, net. We generally do not hedge anticipated transactions beyond 18 months.
Litigation Reserves	Litigation Reserves: There are a variety of legal proceedings pending or threatened against us. Accruals are recorded when it is probable a liability has been incurred and the amount of the liability can be reasonably estimated based on current law, progress of each case, opinions and views of legal counsel and other advisers, our experience in similar matters and intended response to the litigation. These amounts, which are not discounted and are exclusive of claims against third parties, are adjusted periodically as assessment efforts progress or additional information becomes available. We expense amounts for administering or litigating claims as incurred. Accruals for legal proceedings are included in Other current liabilities in the Consolidated Balance Sheets.
Revenue Recognition	Revenue Recognition: We recognize revenue mainly through consumer products retail, foodservice, international, industrial and other distribution channels. Our revenues primarily result from contracts with customers and are generally short term in nature with the delivery of product as the single performance obligation. We recognize revenue for the sale of the product at the point in time when our performance obligation has been satisfied and control of the product has transferred to our customer, which generally occurs upon shipment or delivery to a customer based on terms of the sale. We elected to account for shipping and handling activities that occur after the customer has obtained control of the product as a fulfillment cost rather than an additional promised service. Our contracts are generally less than one year, and therefore we recognize costs paid to third party brokers to obtain contracts as expenses. Additionally, items that are not material in the context of the contract are recognized as expense. Any taxes collected on behalf of government authorities are excluded from net revenues. Revenue is measured by the transaction price, which is defined as the amount of consideration we expect to receive in exchange for providing goods to customers. The transaction price is adjusted for estimates of known or expected variable consideration, which includes consumer incentives, trade promotions, and allowances, such as coupons, discounts, rebates, volume-based incentives, cooperative advertising, and other programs. Variable consideration related to these programs is recorded as a reduction to revenue based on amounts we expect to pay. We base these estimates on current performance, historical utilization, and projected redemption rates of each program. We review and update these estimates regularly until the incentives or product returns are realized and the impact of any adjustments are recognized in the period the adjustments are identified. In many cases, key sales terms such as pricing and quantities ordered are established on a regular basis such that most customer arrangements and related incentives have a duration of less than one year. Amounts billed and due from customers are short term in nature and are classified as receivables since payments are unconditional and only the passage of time is required before payments are due. Additionally, we do not grant payment financing terms greater than one year.
Freight Expense	Freight expense associated with products shipped to customers is recognized in cost of sales.
Marketing, Promotion and Advertising Costs	Advertising Expenses: Advertising expense is charged to operations in the period incurred and is recorded as selling, general and administrative expense. Advertising expense totaled $276 million, $243 million and $238 million in fiscal 2019, 2018 and 2017, respectively.
Research And Development	Research and Development: Research and development costs are expensed as incurred. Research and development costs totaled $97 million, $114 million and $113 million in fiscal 2019, 2018 and 2017, respectively.
Business Combinations	Business Combinations: We account for acquired businesses using the acquisition method of accounting, which requires that once control of a business is obtained, 100% of the assets acquired and liabilities assumed, including amounts attributable to noncontrolling interests, be recorded at the date of acquisition at their respective fair values. Any excess of the purchase price over the estimated fair values of the net assets acquired is recorded as goodwill. Acquisition-related expenses including transaction and integration costs are expensed as incurred. We use various models to determine the value of assets acquired such as net realizable value to value inventory, cost method and market approach to value property, relief-from-royalty and multi-period excess earnings to value intangibles, and discounted cash flow to value goodwill. We make estimates and assumptions about projected future cash flows including sales, operating margins, attrition rates, growth rates, and discount rates based on historical results, business plans, expected synergies, perceived risk, and market place data considering the perspective of marketplace participants. Determining the useful life of an intangible asset also requires judgment as different types of intangible assets will have different useful lives and certain assets may be considered to have indefinite useful lives.
Use Of Estimates	Use of Estimates: The consolidated financial statements are prepared in conformity with accounting principles generally accepted in the United States, which require us to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements: In August 2017, the Financial Accounting Standards Board ("FASB") issued guidance that eases certain documentation and assessment requirements of hedge effectiveness and modifies the accounting for components excluded from the assessment. Some of the modifications include the ineffectiveness of derivative gain/loss in highly effective cash flow hedges to be recorded in Other Comprehensive Income, alignment of the recognition and presentation of the effects related to the hedging instrument and hedged item in the financial statements, and additional disclosures required on the cumulative basis adjustment in fair value hedges and the effect of hedging on financial statement lines for components excluded from the assessment. The amendment also simplifies the application of hedge accounting in certain situations to permit new hedging strategies to be eligible for hedge accounting. The guidance is effective for annual reporting periods and interim periods within those annual reporting periods beginning after December 15, 2018, our fiscal 2020 and the modified retrospective transition method should be applied. We will adopt this guidance beginning in the first quarter of fiscal 2020. Upon adoption, we do not expect this guidance will have a material impact on our consolidated financial statements. In June 2016, the FASB issued guidance that provides more decision-useful information about the expected credit losses on financial instruments and changes the loss impairment methodology. The guidance is effective for annual reporting periods and interim periods within those annual reporting periods beginning after December 15, 2019, our fiscal 2021. Early adoption is permitted for annual reporting periods and interim periods within those annual reporting periods beginning after December 15, 2018, our fiscal 2020. The application of the guidance requires various transition methods depending on the specific amendment. We will adopt this guidance beginning in the first quarter of fiscal 2020. We do not expect the adoption of this guidance will have a material impact on our consolidated financial statements. In February 2016, the FASB issued guidance that created new accounting and reporting guidelines for leasing arrangements. The guidance requires lessees to recognize a right-of-use asset and lease liability for all leases with terms of more than 12 months. Recognition, measurement and presentation of expenses and cash flows arising from a lease will depend on classification as a finance or operating lease. The guidance also requires qualitative and quantitative disclosures regarding the amount, timing, and uncertainty of cash flows arising from leases. The guidance is effective for annual reporting periods and interim periods within those annual reporting periods beginning after December 15, 2018, our fiscal 2020. Early adoption is permitted. In July 2018, the FASB issued an adoption approach that allows entities to apply the guidance as of the date of the initial application. We will adopt the standard in the first quarter of fiscal 2020 using this transition method, and as a result, we will not adjust comparative period financial information or make the new required lease disclosures for periods before the effective date. We have performed a review of the lease portfolio and have implemented a leasing software solution to support the future state lease accounting requirements. We have elected the package of practical expedients available under the transition guidance which allows us to not reassess prior conclusions related to lease classifications, existing contracts containing leases, and initial direct costs. We continue to finalize our implementation efforts and currently estimate that upon adoption we will record operating right of use assets and related lease liabilities of approximately 2% of total assets, subject to the completion of our assessment including finalizing the impacts from recent business acquisitions. We expect our financial statement disclosures will be expanded to present additional details of our leasing arrangements, but do not expect the adoption of this standard to have a material impact on the Consolidated Statements of Income or our Consolidated Statements of Cash Flows.

Business And Summary Of Significant Accounting Policies (Policy)

12 Months Ended

Sep. 28, 2019

Description of Business: Tyson Foods, Inc. (collectively, “Company,” “we,” “us” or “our”), is one of the world's largest food companies and a recognized leader in protein. Founded in 1935 by John W. Tyson and grown under three generations of family leadership, the Company has a broad portfolio of products and brands including Tyson®, Jimmy Dean®, Hillshire Farm®, Ball Park®, Wright®, Aidells®, ibp® and State Fair®. We innovate continually to make protein more sustainable, tailor food for everywhere it’s available and raise the world’s expectations for how much good food can do.

Consolidation

Consolidation: The consolidated financial statements include the accounts of all wholly-owned subsidiaries, as well as majority-owned subsidiaries over which we exercise control and, when applicable, entities for which we have a controlling financial interest or variable interest entities for which we are the primary beneficiary. All significant intercompany accounts and transactions have been eliminated in consolidation.

Fiscal Year

Fiscal Year: We utilize a 52- or 53-week accounting period ending on the Saturday closest to September 30. The Company’s accounting cycle resulted in a 52-week year for fiscal 2019, fiscal 2018, and fiscal 2017.

Cash And Cash Equivalents

Cash and Cash Equivalents: Cash equivalents consist of investments in short-term, highly liquid securities having original maturities of three months or less, which are made as part of our cash management activity. The carrying values of these assets approximate their fair values. We primarily utilize a cash management system with a series of separate accounts consisting of lockbox accounts for receiving cash, concentration accounts where funds are moved to, and several zero-balance disbursement accounts for funding payroll, accounts payable, livestock procurement, livestock grower payments, etc. As a result of our cash management system, checks issued, but not presented to the banks for payment, may result in negative book cash balances. These negative book cash balances are included in accounts payable and other current liabilities. At September 28, 2019, and September 29, 2018, checks outstanding in excess of related book cash balances totaled approximately $200 million and $220 million, respectively.

Accounts Receivable

Accounts Receivable: We record accounts receivable at net realizable value. This value includes an appropriate allowance for estimated uncollectible accounts to reflect any loss anticipated on the accounts receivable balances and charged to the provision for doubtful accounts. We calculate this allowance based on our history of write-offs, level of past due accounts and relationships with and economic status of our customers. At September 28, 2019, and September 29, 2018, our allowance for uncollectible accounts was $21 million and $19 million, respectively. We generally do not have collateral for our receivables, but we do periodically evaluate the credit worthiness of our customers.

Inventories

Inventories: Processed products, livestock and supplies and other are valued at the lower of cost or net realizable value. Cost includes purchased raw materials, live purchase costs, livestock growout costs (primarily feed, livestock grower pay and catch and haul costs), labor and manufacturing and production overhead, which are related to the purchase and production of inventories.

In fiscal 2019 and fiscal 2018, the cost of inventories was determined by either the first-in, first-out ("FIFO") method or the weighted-average method

Property, Plant And Equipment

Property, Plant and Equipment: Property, plant and equipment are stated at cost and generally depreciated on a straight-line method over the estimated lives for buildings and leasehold improvements of 10 to 33 years, machinery and equipment of 3 to 12 years and land improvements and other of 3 to 20 years. Major repairs and maintenance costs that significantly extend the useful life of the related assets are capitalized. Normal repairs and maintenance costs are charged to operations.

We review the carrying value of long-lived assets at each balance sheet date if indication of impairment exists. Recoverability is assessed using undiscounted cash flows based on historical results and current projections of earnings before interest, taxes, depreciation and amortization. We measure impairment as the excess of carrying value over the fair value of an asset. The fair value of an asset is generally measured using discounted cash flows including market participant assumptions of future operating results and discount rates.

Goodwill And Other Intangible Assets

Goodwill and Intangible Assets: Definite life intangibles are initially recorded at fair value and amortized over the estimated period of benefit. Brands and trademarks are generally amortized using the straight-line method over 20 years or less. Customer relationships and supply arrangements are generally amortized over 7 to 30 years based on the pattern of revenue expected to be generated from the use of the asset. The gross cost and accumulated amortization of intangible assets are removed when the recorded amounts are fully amortized and the asset is no longer in use or the contract has expired. Amortization expense is generally recognized in selling, general, and administrative expense. We review the carrying value of definite life intangibles at each balance sheet date if indication of impairment exists. Recoverability is assessed using undiscounted cash flows based on historical results and current projections of earnings before interest, taxes, depreciation and amortization. We measure impairment as the excess of carrying value over the fair value of the definite life intangible asset. We use various valuation techniques to estimate fair value, with the primary techniques being discounted cash flows, relief-from-royalty and multi-period excess earnings valuation approaches, which use significant unobservable inputs, or Level 3 inputs, as defined by the fair value hierarchy. Under these valuation approaches, we are required to make estimates and assumptions about sales, operating margins, growth rates, royalty rates and discount rates based on budgets, business plans, economic projections, anticipated future cash flows and marketplace data.

Goodwill and indefinite life intangible assets are initially recorded at fair value and not amortized, but are reviewed for impairment at least annually or more frequently if impairment indicators arise. Our goodwill is allocated by reporting unit and is evaluated for impairment by first performing a qualitative assessment to determine whether a quantitative goodwill test is necessary. If it is determined, based on qualitative factors, the fair value of the reporting unit may be more likely than not less than carrying amount, or if significant changes to macro-economic factors related to the reporting unit have occurred that could materially impact fair value, a quantitative goodwill impairment test would be required. Additionally, we can elect to forgo the qualitative assessment and perform the quantitative test. The quantitative test is to identify if a potential impairment exists by comparing the fair value of a reporting unit with its carrying amount, including goodwill. If the carrying amount of the reporting unit exceeds the fair value, an impairment loss is recognized in an amount equal to that excess, not to exceed the carrying amount of goodwill.

We estimate the fair value of our reporting units using a combination of various valuation techniques, including an income approach (discounted cash flow analysis) and market approaches (earnings before interest, taxes, depreciation and amortization or "EBITDA" multiples of comparable publicly-traded companies and precedent transactions). Our primary technique is discounted cash flow analysis. These approaches use significant unobservable inputs, or Level 3 inputs, as defined by the fair value hierarchy and requires us to make various judgmental assumptions about sales, operating margins, growth rates and discount rates which consider our budgets, business plans and economic projections, and are believed to reflect market participant views which would exist in an exit transaction. Assumptions are also made for varying perpetual growth rates for periods beyond the long-term business plan period. Generally, we utilize normalized operating margin assumptions based on future expectations and operating margins historically realized in the reporting units' industries.

Some of the inherent estimates and assumptions used in determining fair value of the reporting units are outside the control of management, including interest rates, cost of capital, tax rates, market EBITDA comparables and credit ratings. While we believe we have made reasonable estimates and assumptions to calculate the fair value of the reporting units, it is possible a material change could occur. If our actual results are not consistent with our estimates and assumptions used to calculate fair value, it could result in additional material impairments of our goodwill.

During fiscal 2019, 2018 and 2017, we determined none of our material reporting units' fair values were below its carrying value.

For our indefinite life intangible assets, a qualitative assessment can also be performed to determine whether the existence of events and circumstances indicates it is more likely than not an intangible asset is impaired. Similar to goodwill, we can also elect to forgo the qualitative test for indefinite life intangible assets and perform the quantitative test. Upon performing the quantitative test, if the carrying value of the intangible asset exceeds its fair value, an impairment loss is recognized in an amount equal to that excess.

The fair value of our indefinite life intangible assets is calculated principally using relief-from-royalty and multi-period excess earnings valuation approaches, which use significant unobservable inputs, or Level 3 inputs, as defined by the fair value hierarchy, and is believed to reflect market participant views which would exist in an exit transaction. Under these valuation approaches, we are required to make estimates and assumptions about sales, operating margins, growth rates, royalty rates and discount rates based on budgets, business plans, economic projections, anticipated future cash flows and marketplace data. During fiscal 2019, 2018 and 2017, we determined the fair value of each of our indefinite life intangible assets exceeded its carrying value. The discount rate used in our indefinite life intangible test decreased to 7.5% in fiscal 2019 from 8.2% in fiscal 2018.

Investments

Investments: We have investments in joint ventures and other entities. The equity method of accounting is used for entities in which we exercise significant influence but do not have a controlling interest or a variable interest in which we are the primary beneficiary. Investments not accounted for using the equity method do not have readily determinable fair values and do not qualify for the practical expedient to measure the investment using a net asset value per share. These investments are recorded using the measurement alternative in which our equity interests are recorded at cost, less impairments, adjusted for observable price changes in orderly transactions for an identical or similar investment of the same issuer. At each reporting period, we assess if these investments continue to qualify for this measurement alternative. An impairment is recorded when there is evidence that the expected fair value of the investment has declined to below the recorded cost. Adjustments to the carrying value are recorded in Other, net in the Consolidated Statements of Income. Investments in joint ventures and other entities are reported in the Consolidated Balance Sheets in Other Assets.

We also have investments in marketable debt securities. We have determined all of our marketable debt securities are available-for-sale investments. These investments are reported at fair value based on quoted market prices as of the balance sheet date, with unrealized gains and losses, net of tax, recorded in other comprehensive income.

The amortized cost of debt securities is adjusted for amortization of premiums and accretion of discounts to maturity. Such amortization is recorded in interest income. The cost of securities sold is based on the specific identification method. Realized gains and losses on the sale of debt securities and declines in value judged to be other than temporary are recorded on a net basis in other income. Interest and dividends on securities classified as available-for-sale are recorded in interest income.

Accrued Self-Insurance

Accrued Self-Insurance: We use a combination of insurance and self-insurance mechanisms in an effort to mitigate the potential liabilities for health and welfare, workers’ compensation, auto liability and general liability risks. Liabilities associated with our risks retained are estimated, in part, by considering claims experience, demographic factors, severity factors and other actuarial assumptions.

Defined Benefit Plans

Defined Benefit Plans: We recognize the funded status of defined pension and postretirement plans in the Consolidated Balance Sheets. The funded status is measured as the difference between the fair value of the plan assets and the benefit obligation. We measure our plan assets and liabilities at the end of our fiscal year. For a defined benefit pension plan, the benefit obligation is the projected benefit obligation; for any other defined benefit postretirement plan, such as a retiree health care plan, the benefit obligation is the accumulated postretirement benefit obligation. Any overfunded status is recognized as an asset and any underfunded status is recognized as a liability. Any transitional asset/liability, prior service cost or actuarial gain/loss that has not yet been recognized as a component of net periodic cost is recognized in accumulated other comprehensive income. Accumulated other comprehensive income will be adjusted as these amounts are subsequently recognized as a component of net periodic benefit costs in future periods.

Derivative Financial Instruments

Derivative Financial Instruments: We purchase certain commodities, such as grains and livestock in the course of normal operations. As part of our commodity risk management activities, we use derivative financial instruments, primarily futures and options, to reduce our exposure to various market risks related to these purchases, as well as to changes in foreign currency exchange and interest rates. Contract terms of a financial instrument qualifying as a hedge instrument closely mirror those of the hedged item, providing a high degree of risk reduction and correlation. Contracts designated and highly effective at meeting risk reduction and correlation criteria are recorded using hedge accounting. If a derivative instrument is accounted for as a hedge, depending on the nature of the hedge, changes in the fair value of the instrument will be offset either against the change in fair value of the hedged assets, liabilities or firm commitments through earnings or recognized in other comprehensive income (loss) until the hedged item is recognized in earnings. The ineffective portion of an instrument’s change in fair value is immediately recognized in earnings as a component of cost of sales. Instruments we hold as part of our risk management activities that do not meet the criteria for hedge accounting are marked to fair value with unrealized gains or losses reported currently in earnings. Changes in market value of derivatives used in our risk management activities relating to forward sales contracts are recorded in sales. Changes in market value of derivatives used in our risk management activities surrounding inventories on hand or anticipated purchases of inventories are recorded in cost of sales. Changes in market value of derivatives used in our risk management activities related to interest rates are recorded in interest expense. Changes in the market value of derivatives used in our risk management activities related to foreign exchange contracts are recorded in other, net. We generally do not hedge anticipated transactions beyond 18 months.

Litigation Reserves

Litigation Reserves: There are a variety of legal proceedings pending or threatened against us. Accruals are recorded when it is probable a liability has been incurred and the amount of the liability can be reasonably estimated based on current law, progress of each case, opinions and views of legal counsel and other advisers, our experience in similar matters and intended response to the litigation. These amounts, which are not discounted and are exclusive of claims against third parties, are adjusted periodically as assessment efforts progress or additional information becomes available. We expense amounts for administering or litigating claims as incurred. Accruals for legal proceedings are included in Other current liabilities in the Consolidated Balance Sheets.

Revenue Recognition

Revenue Recognition: We recognize revenue mainly through consumer products retail, foodservice, international, industrial and other distribution channels. Our revenues primarily result from contracts with customers and are generally short term in nature with the delivery of product as the single performance obligation. We recognize revenue for the sale of the product at the point in time when our performance obligation has been satisfied and control of the product has transferred to our customer, which generally occurs upon shipment or delivery to a customer based on terms of the sale. We elected to account for shipping and handling activities that occur after the customer has obtained control of the product as a fulfillment cost rather than an additional promised service. Our contracts are generally less than one year, and therefore we recognize costs paid to third party brokers to obtain contracts as expenses. Additionally, items that are not material in the context of the contract are recognized as expense. Any taxes collected on behalf of government authorities are excluded from net revenues.

Revenue is measured by the transaction price, which is defined as the amount of consideration we expect to receive in exchange for providing goods to customers. The transaction price is adjusted for estimates of known or expected variable consideration, which includes consumer incentives, trade promotions, and allowances, such as coupons, discounts, rebates, volume-based incentives, cooperative advertising, and other programs. Variable consideration related to these programs is recorded as a reduction to revenue based on amounts we expect to pay. We base these estimates on current performance, historical utilization, and projected redemption rates of each program. We review and update these estimates regularly until the incentives or product returns are realized and the impact of any adjustments are recognized in the period the adjustments are identified. In many cases, key sales terms such as pricing and quantities ordered are established on a regular basis such that most customer arrangements and related incentives have a duration of less than one year. Amounts billed and due from customers are short term in nature and are classified as receivables since payments are unconditional and only the passage of time is required before payments are due. Additionally, we do not grant payment financing terms greater than one year.

Freight Expense

Freight expense associated with products shipped to customers is recognized in cost of sales.

Marketing, Promotion and Advertising Costs

Advertising Expenses: Advertising expense is charged to operations in the period incurred and is recorded as selling, general and administrative expense. Advertising expense totaled $276 million, $243 million and $238 million in fiscal 2019, 2018 and 2017, respectively.

Research And Development

Research and Development: Research and development costs are expensed as incurred. Research and development costs totaled $97 million, $114 million and $113 million in fiscal 2019, 2018 and 2017, respectively.

Business Combinations

Business Combinations: We account for acquired businesses using the acquisition method of accounting, which requires that once control of a business is obtained, 100% of the assets acquired and liabilities assumed, including amounts attributable to noncontrolling interests, be recorded at the date of acquisition at their respective fair values. Any excess of the purchase price over the estimated fair values of the net assets acquired is recorded as goodwill. Acquisition-related expenses including transaction and integration costs are expensed as incurred.

We use various models to determine the value of assets acquired such as net realizable value to value inventory, cost method and market approach to value property, relief-from-royalty and multi-period excess earnings to value intangibles, and discounted cash flow to value goodwill. We make estimates and assumptions about projected future cash flows including sales, operating margins, attrition rates, growth rates, and discount rates based on historical results, business plans, expected synergies, perceived risk, and market place data considering the perspective of marketplace participants. Determining the useful life of an intangible asset also requires judgment as different types of intangible assets will have different useful lives and certain assets may be considered to have indefinite useful lives.

Use Of Estimates

Use of Estimates: The consolidated financial statements are prepared in conformity with accounting principles generally accepted in the United States, which require us to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates.

Recently Issued Accounting Pronouncements

Recently Issued Accounting Pronouncements:

In August 2017, the Financial Accounting Standards Board ("FASB") issued guidance that eases certain documentation and assessment requirements of hedge effectiveness and modifies the accounting for components excluded from the assessment. Some of the modifications include the ineffectiveness of derivative gain/loss in highly effective cash flow hedges to be recorded in Other Comprehensive Income, alignment of the recognition and presentation of the effects related to the hedging instrument and hedged item in the financial statements, and additional disclosures required on the cumulative basis adjustment in fair value hedges and the effect of hedging on financial statement lines for components excluded from the assessment. The amendment also simplifies the application of hedge accounting in certain situations to permit new hedging strategies to be eligible for hedge accounting. The guidance is effective for annual reporting periods and interim periods within those annual reporting periods beginning after December 15, 2018, our fiscal 2020 and the modified retrospective transition method should be applied. We will adopt this guidance beginning in the first quarter of fiscal 2020. Upon adoption, we do not expect this guidance will have a material impact on our consolidated financial statements.

In June 2016, the FASB issued guidance that provides more decision-useful information about the expected credit losses on financial instruments and changes the loss impairment methodology. The guidance is effective for annual reporting periods and interim periods within those annual reporting periods beginning after December 15, 2019, our fiscal 2021. Early adoption is permitted for annual reporting periods and interim periods within those annual reporting periods beginning after December 15, 2018, our fiscal 2020. The application of the guidance requires various transition methods depending on the specific amendment. We will adopt this guidance beginning in the first quarter of fiscal 2020. We do not expect the adoption of this guidance will have a material impact on our consolidated financial statements.

In February 2016, the FASB issued guidance that created new accounting and reporting guidelines for leasing arrangements. The guidance requires lessees to recognize a right-of-use asset and lease liability for all leases with terms of more than 12 months. Recognition, measurement and presentation of expenses and cash flows arising from a lease will depend on classification as a finance or operating lease. The guidance also requires qualitative and quantitative disclosures regarding the amount, timing, and uncertainty of cash flows arising from leases. The guidance is effective for annual reporting periods and interim periods within those annual reporting periods beginning after December 15, 2018, our fiscal 2020. Early adoption is permitted. In July 2018, the FASB issued an adoption approach that allows entities to apply the guidance as of the date of the initial application. We will adopt the standard in the first quarter of fiscal 2020 using this transition method, and as a result, we will not adjust comparative period financial information or make the new required lease disclosures for periods before the effective date. We have performed a review of the lease portfolio and have implemented a leasing software solution to support the future state lease accounting requirements. We have elected the package of practical expedients available under the transition guidance which allows us to not reassess prior conclusions related to lease classifications, existing contracts containing leases, and initial direct costs. We continue to finalize our implementation efforts and currently estimate that upon adoption we will record operating right of use assets and related lease liabilities of approximately 2% of total assets, subject to the completion of our assessment including finalizing the impacts from recent business acquisitions. We expect our financial statement disclosures will be expanded to present additional details of our leasing arrangements, but do not expect the adoption of this standard to have a material impact on the Consolidated Statements of Income or our Consolidated Statements of Cash Flows.