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[Domain] Asset Acquisition [Line Items] Asset Acquisition [Line Items] Total liabilities and equity Liabilities and Equity Employee Stock Option Share-Based Payment Arrangement, Option [Member] Segments [Axis] Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Inventory Disclosure [Abstract] Tabular List, Table Tabular List [Table Text Block] Vesting [Axis] Vesting [Axis] Additional paid-in capital Additional Paid in Capital Other comprehensive income (loss) attributable to noncontrolling interest Other Comprehensive Income (Loss), Tax, Portion Attributable to Noncontrolling Interest Investments in debt securities Payments to Acquire Held-to-Maturity Securities Amortization of actuarial losses and prior service credits reclassified to non-operating (gains) losses Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax Operating gains Operating gains Other Operating Income (Expense), Net Name Awards 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Retention Tax Credits Wheat Wheat Commodity Forward Contracts [Member] Wheat Commodity Forward Contracts Gain (loss) on derivative instruments, net, pretax Gain (Loss) on Derivative Instruments, Net, Pretax Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Company Selected Measure Amount Company Selected Measure Amount Investments, Debt and Equity Securities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Settlement of stock options and restricted stock units (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Stock, Class of Stock [Table] Equity [Table] Stock, Class of Stock [Table] Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Attribution of other comprehensive income (loss), net of tax Redeemable Noncontrolling Interest, Attribution Of Comprehensive Income (Loss) Redeemable Noncontrolling Interest, Attribution Of Comprehensive Income 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Disclosure Customer Concentration Risk Customer Concentration Risk [Member] Award Timing Method Award Timing Method [Text Block] Other / Unallocated Product and Service, Other [Member] Principles of Consolidation Consolidation, Policy [Policy Text Block] Net change in cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Accounts and notes receivable Accounts and Financing Receivable, after Allowance for Credit Loss Forecast Forecast [Member] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Loss contingency, accrual, current Loss Contingency, Accrual, Current Amortization Defined Benefit Plan, Amortization of Gain (Loss) AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Share-Based Payment Arrangement, Tranche Three Share-Based Payment Arrangement, Tranche Three [Member] Net income attributable to Smithfield Net income Net Income (Loss) Attributable to Parent Long-Term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Location, Statement of Financial Position, Balance [Axis] Location, Statement of Financial Position, Balance [Axis] Statement [Table] Statement [Table] Share-Based Payment Arrangement, Tranche Two Share-Based Payment Arrangement, Tranche Two [Member] Unallocated Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member] Restatement Determination Date: Restatement Determination Date [Axis] Exchange traded funds Exchange Traded Funds [Member] Schedule of Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Assets Gross Amount of Derivative Assets/ Liabilities Derivative Asset, Subject to Master Netting Arrangement, before Offset Transaction costs Asset Acquisition, Consideration Transferred, Transaction Cost Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Debt term (in years) Long-Term Debt, Term Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract]