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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 28, 2015 | Mar. 29, 2014
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) [Abstract] |  |
Consolidated net income | $ 22,340 us-gaap_ProfitLoss | $ 24,954 us-gaap_ProfitLoss
Other comprehensive (loss) income, net of tax: |  |
Foreign currency translation | (8,404)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax | 1,167 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
Net change with respect to derivative instruments and hedging activities, net of tax of $274 in 2015 and $590 in 2014 | (198)us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent | (1,116)us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent
Net actuarial loss on pension and postretirement obligations, net of tax of $(501) in 2015 and $28 in 2014 | 1,416 us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax | 3 us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax
Other, net | (27)us-gaap_OtherComprehensiveIncomeOtherNetOfTax | (15)us-gaap_OtherComprehensiveIncomeOtherNetOfTax
Total other comprehensive (loss) income | (7,213)us-gaap_OtherComprehensiveIncomeLossNetOfTax | 39 us-gaap_OtherComprehensiveIncomeLossNetOfTax
Comprehensive income | 15,127 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest | 24,993 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
Comprehensive loss (income) attributable to noncontrolling interest | 345 us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest | (253)us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest
Comprehensive income attributable to Mueller Industries, Inc. | $ 15,472 us-gaap_ComprehensiveIncomeNetOfTax | $ 24,740 us-gaap_ComprehensiveIncomeNetOfTax

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