$MLI
MUELLER INDUSTRIES INC Stock $mli

$mli Overview Financials Valuation SEC Filings Company Website

2024 Q1 Form 10-K Financial Statement

#000008943924000015 Filed on February 28, 2024

Income Statement

Concept	2024 Q1	2023 Q4	2023
Revenue	$849.7M	$732.4M	$3.420B
YoY Change		-16.55%	-14.11%
Cost Of Revenue	$608.7M	$536.4M	$2.434B
YoY Change		-13.6%	-15.06%
Gross Profit	$241.0M	$196.0M	$986.8M
YoY Change		-23.67%	-11.7%
Gross Profit Margin	28.36%	26.76%	28.85%
Selling, General & Admin	$48.36M	$51.18M	$208.2M
YoY Change		-7.99%	2.5%
% of Gross Profit	20.07%	26.12%	21.09%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$9.169M	$9.724M	$40.82M
YoY Change		-10.19%	-6.65%
% of Gross Profit	3.81%	4.96%	4.14%
Operating Expenses	$48.36M	$60.43M	$248.1M
YoY Change		-8.94%	22.18%
Operating Profit	$183.4M	$135.6M	$738.7M
YoY Change		-28.81%	-15.78%
Interest Expense	$115.0K	$34.43M	$78.85M
YoY Change		-24011.11%	9634.81%
% of Operating Profit	0.06%	25.4%	10.67%
Other Income/Expense, Net	$630.0K	$673.0K	$2.793M
YoY Change		-92.33%	-80.18%
Pretax Income	$201.6M	$177.9M	$845.2M
YoY Change		-4.34%	-3.52%
Income Tax	$51.83M	$46.44M	$220.8M
% Of Pretax Income	25.72%	26.11%	26.12%
Net Earnings	$138.4M	$119.2M	$602.9M
YoY Change		-14.16%	-8.42%
Net Earnings / Revenue	16.28%	16.28%	17.63%
Basic Earnings Per Share	$1.24	$1.07	$5.41
Diluted Earnings Per Share	$1.21	$1.05	$5.30
COMMON SHARES
Basic Shares Outstanding	113.6M shares	113.5M shares	111.4M shares
Diluted Shares Outstanding	114.1M shares		113.7M shares

Balance Sheet

Concept	2024 Q1	2023 Q4	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.358B	$1.269B	$1.269B
YoY Change		86.93%	86.93%
Cash & Equivalents	$1.358B	$1.171B	$1.171B
Short-Term Investments	$0.00	$98.15M	$98.15M
Other Short-Term Assets	$45.38M	$39.17M	$39.17M
YoY Change		47.82%	47.82%
Inventory	$356.9M	$380.2M	$380.2M
Prepaid Expenses
Receivables	$424.4M	$351.6M	$351.6M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$2.185B	$2.040B	$2.040B
YoY Change		32.93%	32.93%
LONG-TERM ASSETS
Property, Plant & Equipment	$390.5M	$420.3M	$420.3M
YoY Change		10.63%	4.34%
Goodwill	$151.2M	$151.8M
YoY Change		-3.66%
Intangibles	$44.72M	$46.21M
YoY Change		-15.66%
Long-Term Investments	$71.65M	$83.44M	$83.44M
YoY Change		15.3%	15.3%
Other Assets	$17.69M	$298.9M	$298.9M
YoY Change		1382.35%	-1.95%
Total Long-Term Assets	$709.6M	$719.3M	$719.3M
YoY Change		1.63%	1.63%
TOTAL ASSETS
Total Short-Term Assets	$2.185B	$2.040B	$2.040B
Total Long-Term Assets	$709.6M	$719.3M	$719.3M
Total Assets	$2.894B	$2.759B	$2.759B
YoY Change		23.05%	23.05%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$160.1M	$120.5M	$120.5M
YoY Change		-5.87%	-5.87%
Accrued Expenses	$38.03M	$7.893M	$7.893M
YoY Change		59.71%	59.71%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$705.0K	$796.0K	$796.0K
YoY Change		-1.85%	-1.85%
Total Short-Term Liabilities	$361.3M	$317.1M	$317.1M
YoY Change		-8.95%	-8.95%
LONG-TERM LIABILITIES
Long-Term Debt	$130.0K	$185.0K	$185.0K
YoY Change		-84.81%	-84.81%
Other Long-Term Liabilities	$10.04M	$64.13M	$64.13M
YoY Change		292.24%	2.34%
Total Long-Term Liabilities	$10.17M	$64.31M	$64.31M
YoY Change		266.1%	0.67%
TOTAL LIABILITIES
Total Short-Term Liabilities	$361.3M	$317.1M	$317.1M
Total Long-Term Liabilities	$10.17M	$64.31M	$64.31M
Total Liabilities	$445.9M	$421.9M	$421.9M
YoY Change		-1.54%	-6.56%
SHAREHOLDERS EQUITY
Retained Earnings	$2.710B	$2.594B
YoY Change		25.95%
Common Stock	$1.604M	$1.604M
YoY Change		100.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$554.1M	$523.4M
YoY Change		4.1%
Treasury Stock Shares
Shareholders Equity	$2.424B	$2.337B	$2.337B
YoY Change
Total Liabilities & Shareholders Equity	$2.894B	$2.759B	$2.759B
YoY Change		23.05%	23.05%

Cashflow Statement

Concept	2024 Q1	2023 Q4	2023
OPERATING ACTIVITIES
Net Income	$138.4M	$119.2M	$602.9M
YoY Change		-14.16%	-8.42%
Depreciation, Depletion And Amortization	$9.169M	$9.724M	$40.82M
YoY Change		-10.19%	-6.65%
Cash From Operating Activities	$173.6M	$174.3M	$672.8M
YoY Change		-15.83%	-7.07%
INVESTING ACTIVITIES
Capital Expenditures	$16.41M	$14.52M	$54.03M
YoY Change		79.68%	43.53%
Acquisitions			$0.00
YoY Change
Other Investing Activities	$86.84M	$55.50M	$189.1M
YoY Change		-125.5%	-192.53%
Cash From Investing Activities	$70.44M	$40.98M	$135.1M
YoY Change		-118.15%	-155.82%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			-$19.30M
YoY Change			-150.73%
Debt Paid & Issued, Net	$56.00K		$241.0K
YoY Change			18.14%
Cash From Financing Activities	-$52.81M	-25.51M	-104.5M
YoY Change		19.4%	1.81%
NET CHANGE
Cash From Operating Activities	$173.6M	174.3M	672.8M
Cash From Investing Activities	$70.44M	40.98M	135.1M
Cash From Financing Activities	-$52.81M	-25.51M	-104.5M
Net Change In Cash	$190.6M	189.7M	703.3M
YoY Change		-573.55%	87.6%
FREE CASH FLOW
Cash From Operating Activities	$173.6M	$174.3M	$672.8M
Capital Expenditures	$16.41M	$14.52M	$54.03M
Free Cash Flow	$157.2M	$159.7M	$618.7M
YoY Change		-19.71%	-9.84%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	mli	Other Comprehensive Income Loss Attributable To Unconsolidated Affiliates Net Of Tax Including Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossAttributableToUnconsolidatedAffiliatesNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	978000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	3852000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-12722000	usd
CY2023	mli	Other Comprehensive Income Loss Attributable To Unconsolidated Affiliates Tax OtherComprehensiveIncomeLossAttributableToUnconsolidatedAffiliatesTax	-266000	usd
CY2022	mli	Other Comprehensive Income Loss Attributable To Unconsolidated Affiliates Tax OtherComprehensiveIncomeLossAttributableToUnconsolidatedAffiliatesTax	-784000	usd
CY2021	mli	Other Comprehensive Income Loss Attributable To Unconsolidated Affiliates Tax OtherComprehensiveIncomeLossAttributableToUnconsolidatedAffiliatesTax	-284000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-230000	usd
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-157000	usd
CY2022	us-gaap	Proceeds From Insurance Premiums Collected ProceedsFromInsurancePremiumsCollected	1646000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	662820000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-6730000	usd
CY2023	dei	Entity Central Index Key EntityCentralIndexKey	0000089439
CY2023	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2023	dei	Amendment Flag AmendmentFlag	false
CY2023	us-gaap	Stockholders Equity Note Stock Split Conversion Ratio1 StockholdersEquityNoteStockSplitConversionRatio1	2
CY2023	us-gaap	Environmental Remediation Expense Statement Of Income Or Comprehensive Income Extensible Enumeration EnvironmentalRemediationExpenseStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration	http://muellerindustries.com/20231230#EnvironmentalRemediationExpenseNonOperatingProperties
CY2023Q4	us-gaap	Environmental Loss Contingency Current Statement Of Financial Position Extensible Enumeration EnvironmentalLossContingencyCurrentStatementOfFinancialPositionExtensibleEnumeration	http://fasb.org/us-gaap/2023#OtherLiabilitiesCurrent
CY2023Q4	us-gaap	Environmental Loss Contingency Statement Of Financial Position Extensible Enumeration EnvironmentalLossContingencyStatementOfFinancialPositionExtensibleEnumeration	http://fasb.org/us-gaap/2023#AccruedEnvironmentalLossContingenciesNoncurrent http://fasb.org/us-gaap/2023#OtherLiabilitiesCurrent
CY2023Q3	mli	Insured Event Gain Loss Per Diluted Share After Tax InsuredEventGainLossPerDilutedShareAfterTax	0.13
CY2023	dei	Document Annual Report DocumentAnnualReport	true
CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-30
CY2023	dei	Document Transition Report DocumentTransitionReport	false
CY2023	dei	Entity File Number EntityFileNumber	1-6770
CY2023	dei	Entity Registrant Name EntityRegistrantName	MUELLER INDUSTRIES, INC.
CY2023	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2023	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	25-0790410
CY2023	dei	Entity Address Address Line1 EntityAddressAddressLine1	150 Schilling Boulevard
CY2023	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 100
CY2023	dei	Entity Address City Or Town EntityAddressCityOrTown	Collierville
CY2023	dei	Entity Address State Or Province EntityAddressStateOrProvince	TN
CY2023	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	38017
CY2023	dei	City Area Code CityAreaCode	901
CY2023	dei	Local Phone Number LocalPhoneNumber	753-3200
CY2023	dei	Security12b Title Security12bTitle	Common Stock, $0.01 Par Value
CY2023	dei	Trading Symbol TradingSymbol	MLI
CY2023	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2023	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2023	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2023	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2023	dei	Entity Small Business EntitySmallBusiness	false
CY2023	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2023	dei	Document Fin Stmt Error Correction Flag DocumentFinStmtErrorCorrectionFlag	false
CY2023	dei	Entity Shell Company EntityShellCompany	false
CY2023Q3	dei	Entity Public Float EntityPublicFloat	4824036270	usd
CY2024Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	113634944	shares
CY2023Q4	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false
CY2023Q4	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2023Q4	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false
CY2023Q4	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false
CY2023	dei	Auditor Name AuditorName	Ernst & Young LLP
CY2023	dei	Auditor Firm AuditorFirmId	42
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3420345000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3982455000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3769345000	usd
CY2023	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	2433511000	usd
CY2022	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	2864862000	usd
CY2021	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	2938989000	usd
CY2023	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	39954000	usd
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	43731000	usd
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	45390000	usd
CY2023	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	208172000	usd
CY2022	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	203086000	usd
CY2021	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	184052000	usd
CY2023	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	4137000	usd
CY2022	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	usd
CY2021	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	57760000	usd
CY2023	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	0	usd
CY2022	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	6373000	usd
CY2021	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	0	usd
CY2023	us-gaap	Asset Impairment Charges AssetImpairmentCharges	6258000	usd
CY2022	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	usd
CY2021	us-gaap	Asset Impairment Charges AssetImpairmentCharges	2829000	usd
CY2023	us-gaap	Insured Event Gain Loss InsuredEventGainLoss	19466000	usd
CY2022	us-gaap	Insured Event Gain Loss InsuredEventGainLoss	0	usd
CY2021	us-gaap	Insured Event Gain Loss InsuredEventGainLoss	0	usd
CY2023	us-gaap	Operating Income Loss OperatingIncomeLoss	756053000	usd
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	877149000	usd
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	655845000	usd
CY2023	us-gaap	Interest Expense InterestExpense	1221000	usd
CY2022	us-gaap	Interest Expense InterestExpense	810000	usd
CY2021	us-gaap	Interest Expense InterestExpense	7709000	usd
CY2021	us-gaap	Investment Income Interest InvestmentIncomeInterest	353000	usd
CY2023	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	7534000	usd
CY2022	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
CY2023	us-gaap	Redemption Premium RedemptionPremium	0	usd
CY2022	us-gaap	Redemption Premium RedemptionPremium	0	usd
CY2021	us-gaap	Redemption Premium RedemptionPremium	5674000	usd
CY2023	mli	Environmental Remediation Expense Non Operating Properties EnvironmentalRemediationExpenseNonOperatingProperties	825000	usd
CY2022	mli	Environmental Remediation Expense Non Operating Properties EnvironmentalRemediationExpenseNonOperatingProperties	1298000	usd
CY2021	mli	Environmental Remediation Expense Non Operating Properties EnvironmentalRemediationExpenseNonOperatingProperties	5053000	usd
CY2023	mli	Defined Benefit Plans Termination Expenses DefinedBenefitPlansTerminationExpenses	0	usd
CY2022	mli	Defined Benefit Plans Termination Expenses DefinedBenefitPlansTerminationExpenses	13100000	usd
CY2021	mli	Defined Benefit Plans Termination Expenses DefinedBenefitPlansTerminationExpenses	0	usd
CY2023	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	3618000	usd
CY2022	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	4715000	usd
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	3377000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	845232000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	876031000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	641139000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	220762000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	223322000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	165858000	usd
CY2023	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-14821000	usd
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	10111000	usd
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-157000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	609649000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	662820000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	475124000	usd
CY2023	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	6752000	usd
CY2022	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	4504000	usd
CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	6604000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	602897000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	658316000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	468520000	usd
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	111420000	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	111558000	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	112022000	shares
CY2023	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	2242000	shares
CY2022	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1552000	shares
CY2021	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1574000	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	113110000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	113596000	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.18
CY2023	us-gaap	Profit Loss ProfitLoss	609649000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	21943000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-30382000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	373000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-200000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	47000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-1273000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	683000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-181000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-1308000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	4381000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	1379000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-5703000	usd
CY2022	mli	Other Comprehensive Income Loss Attributable To Unconsolidated Affiliates Net Of Tax Including Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossAttributableToUnconsolidatedAffiliatesNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	2702000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	619851000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1170893000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	461018000	usd
CY2023Q4	us-gaap	Short Term Investments ShortTermInvestments	98146000	usd
CY2022Q4	us-gaap	Short Term Investments ShortTermInvestments	217863000	usd
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2830000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2687000	usd
CY2023Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	351561000	usd
CY2022Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	380352000	usd
CY2023Q4	us-gaap	Inventory Net InventoryNet	380248000	usd
CY2022Q4	us-gaap	Inventory Net InventoryNet	448919000	usd
CY2023Q4	us-gaap	Other Assets Current OtherAssetsCurrent	39173000	usd
CY2022Q4	us-gaap	Other Assets Current OtherAssetsCurrent	26501000	usd
CY2023Q4	us-gaap	Assets Current AssetsCurrent	2040021000	usd
CY2022Q4	us-gaap	Assets Current AssetsCurrent	1534653000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	385165000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	379950000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	35170000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	22892000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	151820000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	157588000	usd
CY2023Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	46208000	usd
CY2022Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	54785000	usd
CY2023Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	83436000	usd
CY2022Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	72364000	usd
CY2023Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	17481000	usd
CY2022Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	20167000	usd
CY2023Q4	us-gaap	Assets Assets	2759301000	usd
CY2022Q4	us-gaap	Assets Assets	2242399000	usd
CY2023Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	796000	usd
CY2022Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	811000	usd
CY2023Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	120485000	usd
CY2022Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	128000000	usd
CY2023Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	55644000	usd
CY2022Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	61915000	usd
CY2023Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	7893000	usd
CY2022Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	4942000	usd
CY2023Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	132320000	usd
CY2022Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	152627000	usd
CY2023Q4	us-gaap	Liabilities Current LiabilitiesCurrent	317138000	usd
CY2022Q4	us-gaap	Liabilities Current LiabilitiesCurrent	348295000	usd
CY2023Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	185000	usd
CY2022Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1218000	usd
CY2023Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	2832000	usd
CY2022Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	4078000	usd
CY2023Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	9230000	usd
CY2022Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	8977000	usd
CY2023Q4	us-gaap	Accrued Environmental Loss Contingencies Noncurrent AccruedEnvironmentalLossContingenciesNoncurrent	15030000	usd
CY2022Q4	us-gaap	Accrued Environmental Loss Contingencies Noncurrent AccruedEnvironmentalLossContingenciesNoncurrent	16380000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	19134000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	16258000	usd
CY2023Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	26683000	usd
CY2022Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	16880000	usd
CY2023Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	10353000	usd
CY2022Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	16349000	usd
CY2023Q4	us-gaap	Liabilities Liabilities	400585000	usd
CY2022Q4	us-gaap	Liabilities Liabilities	428435000	usd
CY2022Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	1.00
CY2023Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	1.00
CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2023Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2022Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2023Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2023Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2022Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	250000000	shares
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	160366008	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	160366008	shares
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	114157918	shares
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	114003234	shares
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	1604000	usd
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	802000	usd
CY2023Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	312171000	usd
CY2022Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	297270000	usd
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	2594300000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	2059796000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-47221000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-64175000	usd
CY2023Q4	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	523409000	usd
CY2022Q4	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	502779000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	2337445000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	1790914000	usd
CY2023Q4	us-gaap	Minority Interest MinorityInterest	21271000	usd
CY2022Q4	us-gaap	Minority Interest MinorityInterest	23050000	usd
CY2023Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2358716000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1813964000	usd
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies	0	usd
CY2022Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies	0	usd
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2759301000	usd
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2242399000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	609649000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	662820000	usd
CY2023	us-gaap	Depreciation Depreciation	34949000	usd
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5005000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5574000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	6270000	usd
CY2023	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	870000	usd
CY2022	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	357000	usd
CY2021	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	265000	usd
CY2023	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-14821000	usd
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	10111000	usd
CY2021	us-gaap	Proceeds From Insurance Premiums Collected ProceedsFromInsurancePremiumsCollected	0	usd
CY2023	us-gaap	Redemption Premium RedemptionPremium	0	usd
CY2022	us-gaap	Redemption Premium RedemptionPremium	0	usd
CY2021	us-gaap	Redemption Premium RedemptionPremium	5674000	usd
CY2023	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	17100000	usd
CY2022	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	0	usd
CY2021	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	0	usd
CY2023	us-gaap	Insured Event Gain Loss InsuredEventGainLoss	19466000	usd
CY2022	us-gaap	Insured Event Gain Loss InsuredEventGainLoss	0	usd
CY2021	us-gaap	Insured Event Gain Loss InsuredEventGainLoss	0	usd
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	23131000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	17801000	usd
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	9822000	usd
CY2023	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-84000	usd
CY2022	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	323000	usd
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1216000	usd
CY2023	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	1000	usd
CY2022	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	6373000	usd
CY2021	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	769000	usd
CY2023	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	4137000	usd
CY2022	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	usd
CY2021	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	57760000	usd
CY2023	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	24765000	usd
CY2022	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	0	usd
CY2021	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	0	usd
CY2023	us-gaap	Asset Impairment Charges AssetImpairmentCharges	6258000	usd
CY2022	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	usd
CY2021	us-gaap	Asset Impairment Charges AssetImpairmentCharges	2829000	usd
CY2023	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	7534000	usd
CY2022	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	4790000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-3880000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	7413000	usd
CY2023	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-30915000	usd
CY2022	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-82713000	usd
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	124708000	usd
CY2023	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-67903000	usd
CY2022	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	24189000	usd
CY2021	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	119514000	usd
CY2023	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	20700000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	8971000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-919000	usd
CY2023	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-40606000	usd
CY2022	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-26633000	usd
CY2021	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	73755000	usd
CY2023	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-3497000	usd
CY2022	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-7564000	usd
CY2021	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-5467000	usd
CY2023	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-2511000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-2273000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	2645000	usd
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	672766000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	723943000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	311701000	usd
CY2023	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	279000	usd
CY2022	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	7850000	usd
CY2023	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	106231000	usd
CY2022	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	217863000	usd
CY2021	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	0	usd
CY2023	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	usd
CY2022	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	usd
CY2021	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	30206000	usd
CY2023	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	0	usd
CY2022	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	0	usd
CY2021	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	81884000	usd
CY2023	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	54025000	usd
CY2022	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	37639000	usd
CY2021	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	31833000	usd
CY2023	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	0	usd
CY2022	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	0	usd
CY2021	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	8539000	usd
CY2023	us-gaap	Proceeds From Insurance Settlement Investing Activities ProceedsFromInsuranceSettlementInvestingActivities	24646000	usd
CY2022	us-gaap	Proceeds From Insurance Settlement Investing Activities ProceedsFromInsuranceSettlementInvestingActivities	3354000	usd
CY2021	us-gaap	Proceeds From Insurance Settlement Investing Activities ProceedsFromInsuranceSettlementInvestingActivities	0	usd
CY2023	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	55454000	usd
CY2022	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	0	usd
CY2021	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	0	usd
CY2023	us-gaap	Proceeds From Sale Maturity And Collection Of Shortterm Investments ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments	217863000	usd
CY2022	us-gaap	Proceeds From Sale Maturity And Collection Of Shortterm Investments ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments	0	usd
CY2021	us-gaap	Proceeds From Sale Maturity And Collection Of Shortterm Investments ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments	0	usd
CY2023	mli	Proceeds Dividends From Unconsolidated Affiliates ProceedsDividendsFromUnconsolidatedAffiliates	1093000	usd
CY2022	mli	Proceeds Dividends From Unconsolidated Affiliates ProceedsDividendsFromUnconsolidatedAffiliates	2295000	usd
CY2021	mli	Proceeds Dividends From Unconsolidated Affiliates ProceedsDividendsFromUnconsolidatedAffiliates	0	usd
CY2023	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	3999000	usd
CY2022	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	0	usd
CY2021	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	1613000	usd
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	135080000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-242003000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	29073000	usd
CY2023	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	66868000	usd
CY2022	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	55787000	usd
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	29137000	usd
CY2023	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	9312000	usd
CY2022	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	7248000	usd
CY2021	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	9722000	usd
CY2023	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	usd
CY2022	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	usd
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	595000000	usd
CY2023	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	241000	usd
CY2022	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	204000	usd
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	920610000	usd
CY2023	mli	Repayments Of Debt By Consolidated Joint Ventures RepaymentsOfDebtByConsolidatedJointVentures	30000	usd
CY2022	mli	Repayments Of Debt By Consolidated Joint Ventures RepaymentsOfDebtByConsolidatedJointVentures	-67000	usd
CY2021	mli	Repayments Of Debt By Consolidated Joint Ventures RepaymentsOfDebtByConsolidatedJointVentures	5113000	usd
CY2023	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	19303000	usd
CY2022	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	38054000	usd
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	4864000	usd
CY2023	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	0	usd
CY2022	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	0	usd
CY2021	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	1250000	usd
CY2023	mli	Payments For Settlement Of Stock Based Awards PaymentsForSettlementOfStockBasedAwards	8755000	usd
CY2022	mli	Payments For Settlement Of Stock Based Awards PaymentsForSettlementOfStockBasedAwards	1429000	usd
CY2021	mli	Payments For Settlement Of Stock Based Awards PaymentsForSettlementOfStockBasedAwards	-85000	usd
CY2023	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	usd
CY2022	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	usd
CY2021	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	1111000	usd
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-104509000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-102655000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-376722000	usd
CY2023	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	5590000	usd
CY2022	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-4365000	usd
CY2021	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-1052000	usd
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	708927000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	374920000	usd
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-37000000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	465296000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	90376000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	127376000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1174223000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	465296000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	90376000	usd
CY2023	us-gaap	Fiscal Period FiscalPeriod	<div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Fiscal Years</span></div><div><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company’s fiscal year ends on the last Saturday of December and consisted of 52 weeks in 2023, 53 weeks in 2022, and 52 weeks in 2021. These dates were December 30, 2023, December 31, 2022, and December 25, 2021.</span></div>
CY2023	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Certain prior year balances have been reclassified to conform to current year presentation.</span></div>
CY2023Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2023Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	250000000	shares
CY2023Q3	us-gaap	Stockholders Equity Note Stock Split Conversion Ratio1 StockholdersEquityNoteStockSplitConversionRatio1	2
CY2023	mli	Performance Obligation Payment Term PerformanceObligationPaymentTerm	P60D
CY2023Q4	mli	Temporary Investments TemporaryInvestments	1010000000.00	usd
CY2022Q4	mli	Temporary Investments TemporaryInvestments	329400000	usd
CY2023	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	98000	shares
CY2023	mli	Gain On Short Term Investments Fair Value Disclosure GainOnShortTermInvestmentsFairValueDisclosure	41900000	usd
CY2023	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	17100000	usd
CY2023	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	24800000	usd
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2800000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2700000	usd
CY2023Q4	mli	Number Of Operating Lease Renewal Options NumberOfOperatingLeaseRenewalOptions	1	renewal_option
CY2023Q4	us-gaap	Lessee Operating Lease Renewal Term LesseeOperatingLeaseRenewalTerm	P5Y
CY2023	us-gaap	Insured Event Gain Loss InsuredEventGainLoss	19466000	usd
CY2023	us-gaap	Operating Income Loss OperatingIncomeLoss	756053000	usd
CY2023	us-gaap	Interest Expense InterestExpense	1221000	usd
CY2023	us-gaap	Investment Income Interest InvestmentIncomeInterest	38208000	usd
CY2023	mli	Specified Percentage Over Which Unrecognized Gains And Losses Are Amortized SpecifiedPercentageOverWhichUnrecognizedGainsAndLossesAreAmortized	0.10
CY2023	mli	Average Remaining Service Period For The Pension Plans AverageRemainingServicePeriodForThePensionPlans	P11Y
CY2023	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Concentrations of Credit and Market Risk</span></div><div><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Concentrations of credit risk with respect to accounts receivable are limited due to the large number of customers comprising the Company’s customer base, and their dispersion across different geographic areas and different industries, including HVAC, plumbing, refrigeration, hardware, automotive, OEMs, and others.</span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company minimizes its exposure to base metal price fluctuations through various strategies. Generally, it prices an equivalent amount of copper raw material, under flexible pricing arrangements it maintains with its suppliers, at the time it determines the selling price of finished products to its customers.</span></div>
CY2023	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-4400000	usd
CY2022	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	1000000	usd
CY2021	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-600000	usd
CY2023	us-gaap	Use Of Estimates UseOfEstimates	<div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Use of and Changes in Estimates</span></div><div><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of financial statements in conformity with generally accepted accounting principles in the United States (U.S. GAAP) requires management to make estimates, assumptions, and judgments that affect the amounts reported in the financial statements and accompanying notes. </span><span style="color:#252525;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Management makes its best estimate of the ultimate outcome for these items based on historical trends and other information available when the financial statements are prepared. Changes in estimates are recognized in accordance with the accounting rules for the estimate, which is typically in the period when new information becomes available to management. Areas where the nature of the estimate makes it reasonably possible that actual results could materially differ from amounts estimated include but are not limited to: pension and other postretirement benefit plan obligations, tax liabilities, loss contingencies, litigation claims, environmental reserves, and impairment assessments of long-lived assets (including goodwill).</span></div>
CY2022	mli	Disposal Group Not Discontinued Operation Gain Loss On Disposal Statement Of Income Extensible List Not Disclosed Flag DisposalGroupNotDiscontinuedOperationGainLossOnDisposalStatementOfIncomeExtensibleListNotDisclosedFlag	Corporate and Eliminations
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3420345000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3982455000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3769345000	usd
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3420345000	usd
CY2023	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	2433511000	usd
CY2023	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	39954000	usd
CY2023	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	208172000	usd
CY2023	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	4137000	usd
CY2023	us-gaap	Asset Impairment Charges AssetImpairmentCharges	6258000	usd
CY2023	us-gaap	Gain Loss On Investments GainLossOnInvestments	41865000	usd
CY2023	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	7534000	usd
CY2023	mli	Environmental Remediation Expense Non Operating Properties EnvironmentalRemediationExpenseNonOperatingProperties	825000	usd
CY2023	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	3618000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	845232000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3982455000	usd
CY2022	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	2864862000	usd
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	43731000	usd
CY2022	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	203086000	usd
CY2022	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	6373000	usd
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	877149000	usd
CY2022	us-gaap	Interest Expense InterestExpense	810000	usd
CY2022	us-gaap	Investment Income Interest InvestmentIncomeInterest	6457000	usd
CY2022	mli	Defined Benefit Plans Termination Expenses DefinedBenefitPlansTerminationExpenses	13100000	usd
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	2918000	usd
CY2022	mli	Environmental Remediation Expense Non Operating Properties EnvironmentalRemediationExpenseNonOperatingProperties	1298000	usd
CY2022	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	4715000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	876031000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3769345000	usd
CY2021	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	2938989000	usd
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	45390000	usd
CY2021	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	184052000	usd
CY2021	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	57760000	usd
CY2021	us-gaap	Asset Impairment Charges AssetImpairmentCharges	2829000	usd
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	655845000	usd
CY2021	us-gaap	Interest Expense InterestExpense	7709000	usd
CY2021	us-gaap	Investment Income Interest InvestmentIncomeInterest	353000	usd
CY2021	us-gaap	Redemption Premium RedemptionPremium	5674000	usd
CY2021	mli	Environmental Remediation Expense Non Operating Properties EnvironmentalRemediationExpenseNonOperatingProperties	5053000	usd
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	3377000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	641139000	usd
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3420345000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3982455000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3769345000	usd
CY2023Q4	us-gaap	Noncurrent Assets NoncurrentAssets	385165000	usd
CY2022Q4	us-gaap	Noncurrent Assets NoncurrentAssets	379950000	usd
CY2021Q4	us-gaap	Noncurrent Assets NoncurrentAssets	385562000	usd
CY2023	us-gaap	Segment Expenditure Addition To Long Lived Assets SegmentExpenditureAdditionToLongLivedAssets	54025000	usd
CY2022	us-gaap	Segment Expenditure Addition To Long Lived Assets SegmentExpenditureAdditionToLongLivedAssets	37639000	usd
CY2021	us-gaap	Segment Expenditure Addition To Long Lived Assets SegmentExpenditureAdditionToLongLivedAssets	65122000	usd
CY2023Q4	us-gaap	Assets Assets	2759301000	usd
CY2022Q4	us-gaap	Assets Assets	2242399000	usd
CY2021Q4	us-gaap	Assets Assets	1728936000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1170893000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	461018000	usd
CY2023Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	3228000	usd
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	4176000	usd
CY2023Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	102000	usd
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	102000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1174223000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	465296000	usd
CY2023Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	111843000	usd
CY2022Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	133189000	usd
CY2023Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	61793000	usd
CY2022Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	64177000	usd
CY2023Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	220629000	usd
CY2022Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	265842000	usd
CY2023Q4	us-gaap	Inventory Adjustments InventoryAdjustments	14017000	usd
CY2022Q4	us-gaap	Inventory Adjustments InventoryAdjustments	14289000	usd
CY2023Q4	us-gaap	Inventory Net InventoryNet	380248000	usd
CY2022Q4	us-gaap	Inventory Net InventoryNet	448919000	usd
CY2023Q4	us-gaap	Lifo Inventory Amount LIFOInventoryAmount	20200000	usd
CY2022Q4	us-gaap	Lifo Inventory Amount LIFOInventoryAmount	16500000	usd
CY2023Q4	us-gaap	Fifo Inventory Amount FIFOInventoryAmount	122900000	usd
CY2022Q4	us-gaap	Fifo Inventory Amount FIFOInventoryAmount	117300000	usd
CY2023Q4	mli	Fifo Value Of Inventory Consigned To Others FIFOValueOfInventoryConsignedToOthers	19800000	usd
CY2022Q4	mli	Fifo Value Of Inventory Consigned To Others FIFOValueOfInventoryConsignedToOthers	14300000	usd
CY2023Q4	mli	Accrued Discounts And Allowances Liability Current AccruedDiscountsAndAllowancesLiabilityCurrent	78800000	usd
CY2022Q4	mli	Accrued Discounts And Allowances Liability Current AccruedDiscountsAndAllowancesLiabilityCurrent	82300000	usd
CY2023Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	22800000	usd
CY2022Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	24600000	usd
CY2023Q4	us-gaap	Accrued Environmental Loss Contingencies Current AccruedEnvironmentalLossContingenciesCurrent	3900000	usd
CY2022Q4	us-gaap	Accrued Environmental Loss Contingencies Current AccruedEnvironmentalLossContingenciesCurrent	4200000	usd
CY2022Q4	us-gaap	Multiemployer Plans Withdrawal Obligation MultiemployerPlansWithdrawalObligation	13100000	usd
CY2023	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-765000	usd
CY2022	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-3168000	usd
CY2021	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-1903000	usd
CY2023	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	1502000	usd
CY2022	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	1609000	usd
CY2021	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	1385000	usd
CY2023	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	1351000	usd
CY2022	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	62000	usd
CY2021	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	89000	usd
CY2023	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	3618000	usd
CY2022	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	4715000	usd
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	3377000	usd
CY2023Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	3200000	usd
CY2022Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	4000000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	35170000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	22892000	usd
CY2023Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	7893000	usd
CY2022Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	4942000	usd
CY2023Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	26683000	usd
CY2022Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	16880000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	34576000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	21822000	usd
CY2023Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0355
CY2022Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0335
CY2023Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y2M26D
CY2022Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y10D
CY2023	us-gaap	Operating Lease Cost OperatingLeaseCost	9705000	usd
CY2022	us-gaap	Operating Lease Cost OperatingLeaseCost	8220000	usd
CY2023	us-gaap	Short Term Lease Cost ShortTermLeaseCost	3843000	usd
CY2022	us-gaap	Short Term Lease Cost ShortTermLeaseCost	4086000	usd
CY2023	us-gaap	Lease Cost LeaseCost	13548000	usd
CY2022	us-gaap	Lease Cost LeaseCost	12306000	usd
CY2023	us-gaap	Operating Lease Payments OperatingLeasePayments	9276000	usd
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	7787000	usd
CY2023	us-gaap	Goodwill Other Increase Decrease GoodwillOtherIncreaseDecrease	-7007000	usd
CY2023	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	1239000	usd
CY2023Q4	us-gaap	Goodwill Gross GoodwillGross	203312000	usd
CY2023Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	51492000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	151820000	usd
CY2023	mli	Goodwill Impairment Loss Excluding Turbotec GoodwillImpairmentLossExcludingTurbotec	0	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	8909000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	8124000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	7110000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	6210000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	3222000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	4646000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	38221000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	3645000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	34576000	usd
CY2023Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	7893000	usd
CY2023Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	26683000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1001927000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	975932000	usd
CY2023Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	616762000	usd
CY2022Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	595982000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	385165000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	379950000	usd
CY2023	us-gaap	Depreciation Depreciation	34900000	usd
CY2022	us-gaap	Depreciation Depreciation	38200000	usd
CY2021	us-gaap	Depreciation Depreciation	39100000	usd
CY2021Q4	us-gaap	Goodwill Gross GoodwillGross	222822000	usd
CY2021Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	51492000	usd
CY2021Q4	us-gaap	Goodwill Goodwill	171330000	usd
CY2022	us-gaap	Goodwill Other Increase Decrease GoodwillOtherIncreaseDecrease	-11216000	usd
CY2022	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-2526000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	157588000	usd
CY2022	mli	Goodwill Impairment Loss Excluding Turbotec GoodwillImpairmentLossExcludingTurbotec	0	usd
CY2021	mli	Goodwill Impairment Loss Excluding Turbotec GoodwillImpairmentLossExcludingTurbotec	0	usd
CY2021Q3	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	2100000	usd
CY2023	us-gaap	Adjustment For Amortization AdjustmentForAmortization	5000000	usd
CY2022	us-gaap	Adjustment For Amortization AdjustmentForAmortization	5600000	usd
CY2021	us-gaap	Adjustment For Amortization AdjustmentForAmortization	6300000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	4623000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	4505000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	4357000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	4356000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	4117000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	24250000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	46208000	usd
CY2023	us-gaap	Interest Paid Net InterestPaidNet	0	usd
CY2022	us-gaap	Interest Paid Net InterestPaidNet	0	usd
CY2021	us-gaap	Interest Paid Net InterestPaidNet	13900000	usd
CY2016Q4	mli	Tax Credit Percent Of Qualified Investments TaxCreditPercentOfQualifiedInvestments	0.39
CY2016Q4	mli	Tax Credit Percent Of Recapture TaxCreditPercentOfRecapture	1
CY2016Q4	mli	Compliance Period CompliancePeriod	P7Y
CY2023Q4	us-gaap	Defined Benefit Plan Expected Amortization Of Gain Loss Next Fiscal Year DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear	200000	usd
CY2023	mli	Payable Maximum Period To Be Considered Current PayableMaximumPeriodToBeConsideredCurrent	P12M
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CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	737538000	usd
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CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	138493000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	123059000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	845232000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	876031000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	641139000	usd
CY2023	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	144111000	usd
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	149269000	usd
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CY2023	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	39167000	usd
CY2022	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	36719000	usd
CY2021	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	34455000	usd
CY2023	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	32694000	usd
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CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	16186000	usd
CY2023	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	215972000	usd
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	227202000	usd
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	158445000	usd
CY2023	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	4806000	usd
CY2022	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-3312000	usd
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-3504000	usd
CY2023	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	270000	usd
CY2022	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-192000	usd
CY2021	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	2572000	usd
CY2023	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-286000	usd
CY2022	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-376000	usd
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	8345000	usd
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	4790000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-3880000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	7413000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	220762000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	223322000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	165858000	usd
CY2023	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	177499000	usd
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CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	134639000	usd
CY2023	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	25542000	usd
CY2022	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	32184000	usd
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	21132000	usd
CY2023	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	14519000	usd
CY2022	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	7443000	usd
CY2021	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	11185000	usd
CY2023	mli	Income Tax Rate Reconciliation Investment In Unconsolidated Affiliates IncomeTaxRateReconciliationInvestmentInUnconsolidatedAffiliates	-1226000	usd
CY2022	mli	Income Tax Rate Reconciliation Investment In Unconsolidated Affiliates IncomeTaxRateReconciliationInvestmentInUnconsolidatedAffiliates	-206000	usd
CY2021	mli	Income Tax Rate Reconciliation Investment In Unconsolidated Affiliates IncomeTaxRateReconciliationInvestmentInUnconsolidatedAffiliates	679000	usd
CY2023	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	1976000	usd
CY2022	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-478000	usd
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-419000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	220762000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	223322000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	165858000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	19162000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	16829000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	10174000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	7260000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	6956000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	8046000	usd
CY2023Q4	mli	Deferred Tax Asset Tax Credit Federal And Foreign DeferredTaxAssetTaxCreditFederalAndForeign	4862000	usd
CY2022Q4	mli	Deferred Tax Asset Tax Credit Federal And Foreign DeferredTaxAssetTaxCreditFederalAndForeign	5750000	usd
CY2023Q4	mli	Deferred Tax Asset Tax Credit State And Local DeferredTaxAssetTaxCreditStateAndLocal	6728000	usd
CY2022Q4	mli	Deferred Tax Asset Tax Credit State And Local DeferredTaxAssetTaxCreditStateAndLocal	8063000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	4502000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	5249000	usd
CY2023Q4	mli	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	7354000	usd
CY2022Q4	mli	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	4540000	usd
CY2023Q4	mli	Deferred Tax Assets Tax Deferred Expense Basis Difference In Unconsolidated Affiliates DeferredTaxAssetsTaxDeferredExpenseBasisDifferenceInUnconsolidatedAffiliates	11509000	usd
CY2022Q4	mli	Deferred Tax Assets Tax Deferred Expense Basis Difference In Unconsolidated Affiliates DeferredTaxAssetsTaxDeferredExpenseBasisDifferenceInUnconsolidatedAffiliates	6881000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	71247000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	62618000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	23078000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	21505000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	48169000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	41113000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	42980000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	44001000	usd
CY2023Q4	mli	Deferred Tax Liabilities Lease Asset DeferredTaxLiabilitiesLeaseAsset	7776000	usd
CY2022Q4	mli	Deferred Tax Liabilities Lease Asset DeferredTaxLiabilitiesLeaseAsset	4970000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	10884000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	2918000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	61640000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	51889000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	13471000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	10776000	usd
CY2023Q4	mli	State Income Tax Credit Carryforwards With Expiration StateIncomeTaxCreditCarryforwardsWithExpiration	1300000	usd
CY2023Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	5600000	usd
CY2023Q4	mli	Federal And Foreign Tax Attributes With Potential Tax Benefits Unlimited Life FederalAndForeignTaxAttributesWithPotentialTaxBenefitsUnlimitedLife	3800000	usd
CY2023Q4	mli	Federal And Foreign Tax Attributes With Potential Tax Benefits FederalAndForeignTaxAttributesWithPotentialTaxBenefits	1000000	usd
CY2023	us-gaap	Income Taxes Paid IncomeTaxesPaid	219600000	usd
CY2022	us-gaap	Income Taxes Paid IncomeTaxesPaid	238300000	usd
CY2021	us-gaap	Income Taxes Paid IncomeTaxesPaid	132900000	usd
CY2023Q4	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	40000000	shares
CY2023Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	15000000	shares
CY2023	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	23100000	usd
CY2022	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	17800000	usd
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9800000	usd
CY2023Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	52900000	usd
CY2023	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y9M18D
CY2022	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-17549000	usd
CY2022	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-6721000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	19726000	usd
CY2023	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	2772000	usd
CY2023Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	971192000	usd
CY2023Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	896984000	usd
CY2023Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	819792000	usd
CY2023Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	732377000	usd
CY2023Q2	us-gaap	Gross Profit GrossProfit	292394000	usd
CY2023Q3	us-gaap	Gross Profit GrossProfit	257712000	usd
CY2023Q3	us-gaap	Gross Profit GrossProfit	240734000	usd
CY2023Q4	us-gaap	Gross Profit GrossProfit	195994000	usd
CY2023Q2	us-gaap	Profit Loss ProfitLoss	175093000	usd
CY2023Q3	us-gaap	Profit Loss ProfitLoss	179551000	usd
CY2023Q3	us-gaap	Profit Loss ProfitLoss	135709000	usd
CY2023Q4	us-gaap	Profit Loss ProfitLoss	119296000	usd
CY2023Q2	us-gaap	Net Income Loss NetIncomeLoss	173239000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	177711000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	132709000	usd
CY2023Q4	us-gaap	Net Income Loss NetIncomeLoss	119238000	usd
CY2023Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.56
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.60
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.19
CY2023Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.07
CY2023Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.54
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.56
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.17
CY2023Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.05
CY2023Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.15
CY2023Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.15
CY2023Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.15
CY2023Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.15
CY2022Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1010002000	usd
CY2022Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1150042000	usd
CY2022Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	944830000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	877581000	usd
CY2022Q1	us-gaap	Gross Profit GrossProfit	265491000	usd
CY2022Q2	us-gaap	Gross Profit GrossProfit	329128000	usd
CY2022Q3	us-gaap	Gross Profit GrossProfit	266193000	usd
	us-gaap	Gross Profit GrossProfit	256781000	usd
CY2022Q1	us-gaap	Profit Loss ProfitLoss	159248000	usd
CY2022Q2	us-gaap	Profit Loss ProfitLoss	207524000	usd
CY2022Q3	us-gaap	Profit Loss ProfitLoss	155813000	usd
	us-gaap	Profit Loss ProfitLoss	140235000	usd
CY2022Q1	us-gaap	Net Income Loss NetIncomeLoss	158316000	usd
CY2022Q2	us-gaap	Net Income Loss NetIncomeLoss	206552000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	154542000	usd
	us-gaap	Net Income Loss NetIncomeLoss	138906000	usd
CY2022Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.41
CY2022Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.85
CY2022Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.39
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.25
CY2022Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.39
CY2022Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.83
CY2022Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.37
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.23
CY2022Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.125
CY2022Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.125
CY2022Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.125
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.125
CY2023	dei	Auditor Location AuditorLocation	Memphis, Tennessee

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$MLI
MUELLER INDUSTRIES INC Stock $mli

2024 Q1 Form 10-K Financial Statement

#000008943924000015 Filed on February 28, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MLI MUELLER INDUSTRIES INC Stock $mli

2024 Q1 Form 10-K Financial Statement

#000008943924000015 Filed on February 28, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MLI
MUELLER INDUSTRIES INC Stock $mli