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Employee Retirement Plans Summary of the Basis Used to Measure Pension Plans' Assets at Fair Value (Details) (USD $) In Thousands, unless otherwise specified | Jan. 03, 2015 | Dec. 28, 2013 | Dec. 31, 2010
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Elgin Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | $ 3,551 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_PlanNameAxis = midd_ElginPlanMember |  | $ 3,722 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_PlanNameAxis = midd_ElginPlanMember | $ 3,503 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_PlanNameAxis = midd_ElginPlanMember
Smithville Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 10,024 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  | 9,602 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_PlanNameAxis = midd_SmithvillePlanMember | 8,781 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_PlanNameAxis = midd_SmithvillePlanMember
Wrexham Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 15,306 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_PlanNameAxis = midd_WrexhamPlanMember |  | 15,172 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_PlanNameAxis = midd_WrexhamPlanMember | 12,997 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_PlanNameAxis = midd_WrexhamPlanMember
Total [Member] | Elgin Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 3,551 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Total [Member] | Smithville Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 10,024 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Total [Member] | Wrexham Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 15,306 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_PlanNameAxis = midd_WrexhamPlanMember |  |  |
Total [Member] | Short Term Investment Fund [Member] | Elgin Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 121 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = midd_ShortTermInvestmentFundMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_PlanNameAxis = midd_ElginPlanMember | [1] |  |
Total [Member] | Short Term Investment Fund [Member] | Smithville Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 446 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = midd_ShortTermInvestmentFundMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember | [1] |  |
Total [Member] | Short Term Investment Fund [Member] | Wrexham Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 667 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = midd_ShortTermInvestmentFundMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_PlanNameAxis = midd_WrexhamPlanMember | [1] |  |
Total [Member] | Equity Securities [Member] | Elgin Plan [Member] | Large Cap [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 813 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_InvestmentTypeAxis = midd_USLargeCapMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Total [Member] | Equity Securities [Member] | Elgin Plan [Member] | Mid Cap [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 100 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_InvestmentTypeAxis = midd_USMidCapMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Total [Member] | Equity Securities [Member] | Elgin Plan [Member] | Small Cap [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 100 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_InvestmentTypeAxis = midd_USSmallCapMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Total [Member] | Equity Securities [Member] | Elgin Plan [Member] | International [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 686 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_InvestmentTypeAxis = midd_InternationalEquitySecuritiesMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Total [Member] | Equity Securities [Member] | Smithville Plan [Member] | Large Cap [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 2,297 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_InvestmentTypeAxis = midd_USLargeCapMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Total [Member] | Equity Securities [Member] | Smithville Plan [Member] | Mid Cap [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 268 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_InvestmentTypeAxis = midd_USMidCapMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Total [Member] | Equity Securities [Member] | Smithville Plan [Member] | Small Cap [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 281 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_InvestmentTypeAxis = midd_USSmallCapMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Total [Member] | Equity Securities [Member] | Smithville Plan [Member] | International [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 1,923 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_InvestmentTypeAxis = midd_InternationalEquitySecuritiesMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Total [Member] | Equity Securities [Member] | Wrexham Plan [Member] | International Developed Markets [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 4,827 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_InvestmentTypeAxis = midd_InternationalDevelopedMarketsMember / us-gaap_PlanNameAxis = midd_WrexhamPlanMember |  |  |
Total [Member] | Equity Securities [Member] | Wrexham Plan [Member] | International Emerging Markets [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 487 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_InvestmentTypeAxis = midd_InternationalEmergingMarketsMember / us-gaap_PlanNameAxis = midd_WrexhamPlanMember |  |  |
Total [Member] | Equity Securities [Member] | Wrexham Plan [Member] | International Global Markets [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 602 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_InvestmentTypeAxis = midd_InternationalGlobalMarketsMember / us-gaap_PlanNameAxis = midd_WrexhamPlanMember |  |  |
Total [Member] | Equity Securities [Member] | Wrexham Plan [Member] | United Kingdom [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 5,109 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_PlanNameAxis = midd_WrexhamPlanMember / midd_RegionReportingInformationByRegionAxis = country_GB |  |  |
Total [Member] | Fixed Income [Member] | Elgin Plan [Member] | Government/Corporate [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 1,074 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_FixedIncomeSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_InvestmentTypeAxis = us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Total [Member] | Fixed Income [Member] | Elgin Plan [Member] | High Yield [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 216 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_FixedIncomeSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_InvestmentTypeAxis = midd_HighYieldFixedIncomeMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Total [Member] | Fixed Income [Member] | Smithville Plan [Member] | Government/Corporate [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 3,058 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_FixedIncomeSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_InvestmentTypeAxis = us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Total [Member] | Fixed Income [Member] | Smithville Plan [Member] | High Yield [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 599 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_FixedIncomeSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_InvestmentTypeAxis = midd_HighYieldFixedIncomeMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Total [Member] | Fixed Income [Member] | Wrexham Plan [Member] | Government/Corporate [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 2,113 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_FixedIncomeSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_InvestmentTypeAxis = us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember / us-gaap_PlanNameAxis = midd_WrexhamPlanMember |  |  |
Total [Member] | Fixed Income [Member] | Wrexham Plan [Member] | Aggregate [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 358 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_FixedIncomeSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_InvestmentTypeAxis = midd_AggregateFairValueUnderFairValueOptionMember / us-gaap_PlanNameAxis = midd_WrexhamPlanMember |  |  |
Total [Member] | Fixed Income [Member] | Wrexham Plan [Member] | Index Linked [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 1,143 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_FixedIncomeSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_InvestmentTypeAxis = midd_IndexLinkedMember / us-gaap_PlanNameAxis = midd_WrexhamPlanMember |  |  |
Total [Member] | Alternative [Member] | Elgin Plan [Member] | Global Real Estate [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 314 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = midd_AlternativeInvestmentMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_InvestmentTypeAxis = us-gaap_RealEstateFundsMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Total [Member] | Alternative [Member] | Elgin Plan [Member] | Commodities Investment [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 127 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = midd_AlternativeInvestmentMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_InvestmentTypeAxis = us-gaap_CommoditiesInvestmentMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Total [Member] | Alternative [Member] | Smithville Plan [Member] | Global Real Estate [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 830 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = midd_AlternativeInvestmentMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_InvestmentTypeAxis = us-gaap_RealEstateFundsMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Total [Member] | Alternative [Member] | Smithville Plan [Member] | Commodities Investment [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 322 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = midd_AlternativeInvestmentMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember / us-gaap_InvestmentTypeAxis = us-gaap_CommoditiesInvestmentMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Elgin Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 3,430 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Smithville Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 9,578 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Wrexham Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 14,639 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_PlanNameAxis = midd_WrexhamPlanMember |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Short Term Investment Fund [Member] | Elgin Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = midd_ShortTermInvestmentFundMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_PlanNameAxis = midd_ElginPlanMember | [1] |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Short Term Investment Fund [Member] | Smithville Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = midd_ShortTermInvestmentFundMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_PlanNameAxis = midd_SmithvillePlanMember | [1] |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Short Term Investment Fund [Member] | Wrexham Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = midd_ShortTermInvestmentFundMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_PlanNameAxis = midd_WrexhamPlanMember | [1] |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities [Member] | Elgin Plan [Member] | Large Cap [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 813 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_InvestmentTypeAxis = midd_USLargeCapMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities [Member] | Elgin Plan [Member] | Mid Cap [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 100 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_InvestmentTypeAxis = midd_USMidCapMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities [Member] | Elgin Plan [Member] | Small Cap [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 100 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_InvestmentTypeAxis = midd_USSmallCapMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities [Member] | Elgin Plan [Member] | International [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 686 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_InvestmentTypeAxis = midd_InternationalEquitySecuritiesMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities [Member] | Smithville Plan [Member] | Large Cap [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 2,297 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_InvestmentTypeAxis = midd_USLargeCapMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities [Member] | Smithville Plan [Member] | Mid Cap [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 268 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_InvestmentTypeAxis = midd_USMidCapMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities [Member] | Smithville Plan [Member] | Small Cap [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 281 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_InvestmentTypeAxis = midd_USSmallCapMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities [Member] | Smithville Plan [Member] | International [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 1,923 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_InvestmentTypeAxis = midd_InternationalEquitySecuritiesMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities [Member] | Wrexham Plan [Member] | International Developed Markets [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 4,827 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_InvestmentTypeAxis = midd_InternationalDevelopedMarketsMember / us-gaap_PlanNameAxis = midd_WrexhamPlanMember |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities [Member] | Wrexham Plan [Member] | International Emerging Markets [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 487 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_InvestmentTypeAxis = midd_InternationalEmergingMarketsMember / us-gaap_PlanNameAxis = midd_WrexhamPlanMember |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities [Member] | Wrexham Plan [Member] | International Global Markets [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 602 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_InvestmentTypeAxis = midd_InternationalGlobalMarketsMember / us-gaap_PlanNameAxis = midd_WrexhamPlanMember |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities [Member] | Wrexham Plan [Member] | United Kingdom [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 5,109 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_PlanNameAxis = midd_WrexhamPlanMember / midd_RegionReportingInformationByRegionAxis = country_GB |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fixed Income [Member] | Elgin Plan [Member] | Government/Corporate [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 1,074 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_FixedIncomeSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_InvestmentTypeAxis = us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fixed Income [Member] | Elgin Plan [Member] | High Yield [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 216 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_FixedIncomeSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_InvestmentTypeAxis = midd_HighYieldFixedIncomeMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fixed Income [Member] | Smithville Plan [Member] | Government/Corporate [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 3,058 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_FixedIncomeSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_InvestmentTypeAxis = us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fixed Income [Member] | Smithville Plan [Member] | High Yield [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 599 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_FixedIncomeSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_InvestmentTypeAxis = midd_HighYieldFixedIncomeMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fixed Income [Member] | Wrexham Plan [Member] | Government/Corporate [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 2,113 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_FixedIncomeSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_InvestmentTypeAxis = us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember / us-gaap_PlanNameAxis = midd_WrexhamPlanMember |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fixed Income [Member] | Wrexham Plan [Member] | Aggregate [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 358 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_FixedIncomeSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_InvestmentTypeAxis = midd_AggregateFairValueUnderFairValueOptionMember / us-gaap_PlanNameAxis = midd_WrexhamPlanMember |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fixed Income [Member] | Wrexham Plan [Member] | Index Linked [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 1,143 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_FixedIncomeSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_InvestmentTypeAxis = midd_IndexLinkedMember / us-gaap_PlanNameAxis = midd_WrexhamPlanMember |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Alternative [Member] | Elgin Plan [Member] | Global Real Estate [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 314 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = midd_AlternativeInvestmentMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_InvestmentTypeAxis = us-gaap_RealEstateFundsMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Alternative [Member] | Elgin Plan [Member] | Commodities Investment [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 127 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = midd_AlternativeInvestmentMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_InvestmentTypeAxis = us-gaap_CommoditiesInvestmentMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Alternative [Member] | Smithville Plan [Member] | Global Real Estate [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 830 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = midd_AlternativeInvestmentMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_InvestmentTypeAxis = us-gaap_RealEstateFundsMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Alternative [Member] | Smithville Plan [Member] | Commodities Investment [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 322 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = midd_AlternativeInvestmentMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_InvestmentTypeAxis = us-gaap_CommoditiesInvestmentMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Significant Observable Inputs (Level 2) [Member] | Elgin Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 121 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Significant Observable Inputs (Level 2) [Member] | Smithville Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 446 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Significant Observable Inputs (Level 2) [Member] | Wrexham Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 667 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_PlanNameAxis = midd_WrexhamPlanMember |  |  |
Significant Observable Inputs (Level 2) [Member] | Short Term Investment Fund [Member] | Elgin Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 121 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = midd_ShortTermInvestmentFundMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_PlanNameAxis = midd_ElginPlanMember | [1] |  |
Significant Observable Inputs (Level 2) [Member] | Short Term Investment Fund [Member] | Smithville Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 446 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = midd_ShortTermInvestmentFundMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_PlanNameAxis = midd_SmithvillePlanMember | [1] |  |
Significant Observable Inputs (Level 2) [Member] | Short Term Investment Fund [Member] | Wrexham Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 667 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = midd_ShortTermInvestmentFundMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_PlanNameAxis = midd_WrexhamPlanMember | [1] |  |
Significant Observable Inputs (Level 2) [Member] | Equity Securities [Member] | Elgin Plan [Member] | Large Cap [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_InvestmentTypeAxis = midd_USLargeCapMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Significant Observable Inputs (Level 2) [Member] | Equity Securities [Member] | Elgin Plan [Member] | Mid Cap [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_InvestmentTypeAxis = midd_USMidCapMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Significant Observable Inputs (Level 2) [Member] | Equity Securities [Member] | Elgin Plan [Member] | Small Cap [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
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Significant Observable Inputs (Level 2) [Member] | Equity Securities [Member] | Elgin Plan [Member] | International [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
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Significant Observable Inputs (Level 2) [Member] | Equity Securities [Member] | Smithville Plan [Member] | Large Cap [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
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Significant Observable Inputs (Level 2) [Member] | Equity Securities [Member] | Smithville Plan [Member] | Mid Cap [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
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Significant Observable Inputs (Level 2) [Member] | Equity Securities [Member] | Smithville Plan [Member] | Small Cap [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_InvestmentTypeAxis = midd_USSmallCapMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Significant Observable Inputs (Level 2) [Member] | Equity Securities [Member] | Smithville Plan [Member] | International [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_InvestmentTypeAxis = midd_InternationalEquitySecuritiesMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Significant Observable Inputs (Level 2) [Member] | Equity Securities [Member] | Wrexham Plan [Member] | International Developed Markets [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
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Significant Observable Inputs (Level 2) [Member] | Equity Securities [Member] | Wrexham Plan [Member] | International Emerging Markets [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_InvestmentTypeAxis = midd_InternationalEmergingMarketsMember / us-gaap_PlanNameAxis = midd_WrexhamPlanMember |  |  |
Significant Observable Inputs (Level 2) [Member] | Equity Securities [Member] | Wrexham Plan [Member] | International Global Markets [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_InvestmentTypeAxis = midd_InternationalGlobalMarketsMember / us-gaap_PlanNameAxis = midd_WrexhamPlanMember |  |  |
Significant Observable Inputs (Level 2) [Member] | Equity Securities [Member] | Wrexham Plan [Member] | United Kingdom [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_PlanNameAxis = midd_WrexhamPlanMember / midd_RegionReportingInformationByRegionAxis = country_GB |  |  |
Significant Observable Inputs (Level 2) [Member] | Fixed Income [Member] | Elgin Plan [Member] | Government/Corporate [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
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Significant Observable Inputs (Level 2) [Member] | Fixed Income [Member] | Elgin Plan [Member] | High Yield [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
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Significant Observable Inputs (Level 2) [Member] | Fixed Income [Member] | Smithville Plan [Member] | Government/Corporate [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
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Significant Observable Inputs (Level 2) [Member] | Fixed Income [Member] | Smithville Plan [Member] | High Yield [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
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Significant Observable Inputs (Level 2) [Member] | Fixed Income [Member] | Wrexham Plan [Member] | Government/Corporate [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
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Significant Observable Inputs (Level 2) [Member] | Fixed Income [Member] | Wrexham Plan [Member] | Aggregate [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
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Significant Observable Inputs (Level 2) [Member] | Fixed Income [Member] | Wrexham Plan [Member] | Index Linked [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
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Significant Observable Inputs (Level 2) [Member] | Alternative [Member] | Elgin Plan [Member] | Global Real Estate [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
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Significant Observable Inputs (Level 2) [Member] | Alternative [Member] | Elgin Plan [Member] | Commodities Investment [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
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Significant Observable Inputs (Level 2) [Member] | Alternative [Member] | Smithville Plan [Member] | Global Real Estate [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
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Significant Observable Inputs (Level 2) [Member] | Alternative [Member] | Smithville Plan [Member] | Commodities Investment [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
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Significant Unobservable Inputs (Level 3) [Member] | Elgin Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Smithville Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Wrexham Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_PlanNameAxis = midd_WrexhamPlanMember |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Short Term Investment Fund [Member] | Elgin Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = midd_ShortTermInvestmentFundMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_PlanNameAxis = midd_ElginPlanMember | [1] |  |
Significant Unobservable Inputs (Level 3) [Member] | Short Term Investment Fund [Member] | Smithville Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = midd_ShortTermInvestmentFundMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_PlanNameAxis = midd_SmithvillePlanMember | [1] |  |
Significant Unobservable Inputs (Level 3) [Member] | Short Term Investment Fund [Member] | Wrexham Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = midd_ShortTermInvestmentFundMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_PlanNameAxis = midd_WrexhamPlanMember | [1] |  |
Significant Unobservable Inputs (Level 3) [Member] | Equity Securities [Member] | Elgin Plan [Member] | Large Cap [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_InvestmentTypeAxis = midd_USLargeCapMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Equity Securities [Member] | Elgin Plan [Member] | Mid Cap [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_InvestmentTypeAxis = midd_USMidCapMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Equity Securities [Member] | Elgin Plan [Member] | Small Cap [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_InvestmentTypeAxis = midd_USSmallCapMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Equity Securities [Member] | Elgin Plan [Member] | International [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
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Significant Unobservable Inputs (Level 3) [Member] | Equity Securities [Member] | Smithville Plan [Member] | Large Cap [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_InvestmentTypeAxis = midd_USLargeCapMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Equity Securities [Member] | Smithville Plan [Member] | Mid Cap [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_InvestmentTypeAxis = midd_USMidCapMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Equity Securities [Member] | Smithville Plan [Member] | Small Cap [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_InvestmentTypeAxis = midd_USSmallCapMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Equity Securities [Member] | Smithville Plan [Member] | International [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_InvestmentTypeAxis = midd_InternationalEquitySecuritiesMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Equity Securities [Member] | Wrexham Plan [Member] | International Developed Markets [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_InvestmentTypeAxis = midd_InternationalDevelopedMarketsMember / us-gaap_PlanNameAxis = midd_WrexhamPlanMember |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Equity Securities [Member] | Wrexham Plan [Member] | International Emerging Markets [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_InvestmentTypeAxis = midd_InternationalEmergingMarketsMember / us-gaap_PlanNameAxis = midd_WrexhamPlanMember |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Equity Securities [Member] | Wrexham Plan [Member] | International Global Markets [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_InvestmentTypeAxis = midd_InternationalGlobalMarketsMember / us-gaap_PlanNameAxis = midd_WrexhamPlanMember |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Equity Securities [Member] | Wrexham Plan [Member] | United Kingdom [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_PlanNameAxis = midd_WrexhamPlanMember / midd_RegionReportingInformationByRegionAxis = country_GB |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Fixed Income [Member] | Elgin Plan [Member] | Government/Corporate [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_FixedIncomeSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_InvestmentTypeAxis = us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Fixed Income [Member] | Elgin Plan [Member] | High Yield [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_FixedIncomeSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_InvestmentTypeAxis = midd_HighYieldFixedIncomeMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Fixed Income [Member] | Smithville Plan [Member] | Government/Corporate [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_FixedIncomeSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_InvestmentTypeAxis = us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Fixed Income [Member] | Smithville Plan [Member] | High Yield [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_FixedIncomeSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_InvestmentTypeAxis = midd_HighYieldFixedIncomeMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Fixed Income [Member] | Wrexham Plan [Member] | Government/Corporate [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_FixedIncomeSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_InvestmentTypeAxis = us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember / us-gaap_PlanNameAxis = midd_WrexhamPlanMember |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Fixed Income [Member] | Wrexham Plan [Member] | Aggregate [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_FixedIncomeSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_InvestmentTypeAxis = midd_AggregateFairValueUnderFairValueOptionMember / us-gaap_PlanNameAxis = midd_WrexhamPlanMember |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Fixed Income [Member] | Wrexham Plan [Member] | Index Linked [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_FixedIncomeSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_InvestmentTypeAxis = midd_IndexLinkedMember / us-gaap_PlanNameAxis = midd_WrexhamPlanMember |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Alternative [Member] | Elgin Plan [Member] | Global Real Estate [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = midd_AlternativeInvestmentMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_InvestmentTypeAxis = us-gaap_RealEstateFundsMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Alternative [Member] | Elgin Plan [Member] | Commodities Investment [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = midd_AlternativeInvestmentMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_InvestmentTypeAxis = us-gaap_CommoditiesInvestmentMember / us-gaap_PlanNameAxis = midd_ElginPlanMember |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Alternative [Member] | Smithville Plan [Member] | Global Real Estate [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = midd_AlternativeInvestmentMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_InvestmentTypeAxis = us-gaap_RealEstateFundsMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Alternative [Member] | Smithville Plan [Member] | Commodities Investment [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Fair value of pension plan assets | $ 0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = midd_AlternativeInvestmentMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_InvestmentTypeAxis = us-gaap_CommoditiesInvestmentMember / us-gaap_PlanNameAxis = midd_SmithvillePlanMember |  |  |
[1] | Represents collective short term investment fund, composed of high-grade money market instruments with short maturities.

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- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930 + Details
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