10-K Filing

MARTIN MARIETTA MATERIALS INC CIK: 916076 FY 2020

Filing Information

Form Type	10-K
Accession Number	`0001564590-21-006959`
Period End Date	20201231
Filing Date	20210219
Fiscal Year	2020
Fiscal Period	FY
XBRL Instance	mlm-10k_20201231_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 81 Income Statement 54 Cash Flow Statement 92 Stockholders Equity 42 Comprehensive Income 48

Balance Sheet 81 line items

Line Item	Tag	Value	Unit	Period
Common stock, par value	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$44.90M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$21.00M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$207.30M	USD	Point-in-time
Common stock, shares authorized	`CommonStockSharesAuthorized`	100.00M	shares	Point-in-time
Common stock, shares authorized	`CommonStockSharesAuthorized`	100.00M	shares	Point-in-time
Restricted cash	`RestrictedCash`	$97.10M	USD	Point-in-time
Common stock, shares outstanding	`CommonStockSharesOutstanding`	62.30M	shares	Point-in-time
Common stock, shares outstanding	`CommonStockSharesOutstanding`	62.40M	shares	Point-in-time
Preferred stock, par value	`PreferredStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Accounts receivable, net	`AccountsReceivableNetCurrent`	$573.70M	USD	Point-in-time
Preferred stock, par value	`PreferredStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Accounts receivable, net	`AccountsReceivableNetCurrent`	$575.10M	USD	Point-in-time
Inventories, net	`InventoryNet`	$690.80M	USD	Point-in-time
Preferred stock, shares authorized	`PreferredStockSharesAuthorized`	10.00M	shares	Point-in-time
Preferred stock, shares authorized	`PreferredStockSharesAuthorized`	10.00M	shares	Point-in-time
Inventories, net	`InventoryNet`	$709.00M	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$79.80M	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$141.20M	USD	Point-in-time
Preferred stock, shares outstanding	`PreferredStockSharesOutstanding`	0.00	shares	Point-in-time
Preferred stock, shares outstanding	`PreferredStockSharesOutstanding`	0.00	shares	Point-in-time
Total Current Assets	`AssetsCurrent`	$1.43B	USD	Point-in-time
Total Current Assets	`AssetsCurrent`	$1.67B	USD	Point-in-time
Property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	$5.21B	USD	Point-in-time
Property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	$5.24B	USD	Point-in-time
Goodwill	`Goodwill`	$2.40B	USD	Point-in-time
Goodwill	`Goodwill`	$2.40B	USD	Point-in-time
Goodwill	`Goodwill`	$2.41B	USD	Point-in-time
Other intangibles, net	`OtherIntangibleAssetsNet`	$508.00M	USD	Point-in-time
Other intangibles, net	`OtherIntangibleAssetsNet`	$486.80M	USD	Point-in-time
Operating lease right-of-use assets, net	`OperatingLeaseRightOfUseAsset`	$481.90M	USD	Point-in-time
Operating lease right-of-use assets, net	`OperatingLeaseRightOfUseAsset`	$453.00M	USD	Point-in-time
Other noncurrent assets	`OtherAssetsNoncurrent`	$295.20M	USD	Point-in-time
Other noncurrent assets	`OtherAssetsNoncurrent`	$133.40M	USD	Point-in-time
Total Assets	`Assets`	$9.55B	USD	Point-in-time
Total Assets	`Assets`	$10.58B	USD	Point-in-time
Total Assets	`Assets`	$10.13B	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$207.80M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$229.60M	USD	Point-in-time
Accrued salaries, benefits and payroll taxes	`AccruedSalariesBenefitsAndPayrollTaxes`	$82.60M	USD	Point-in-time
Accrued salaries, benefits and payroll taxes	`AccruedSalariesBenefitsAndPayrollTaxes`	$56.70M	USD	Point-in-time
Accrued other taxes	`AccruedOtherTaxesCurrent`	$43.60M	USD	Point-in-time
Accrued other taxes	`AccruedOtherTaxesCurrent`	$43.50M	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$340.00M	USD	Point-in-time
Operating lease liabilities	`OperatingLeaseLiabilityCurrent`	$48.60M	USD	Point-in-time
Operating lease liabilities	`OperatingLeaseLiabilityCurrent`	$52.70M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$116.80M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$115.90M	USD	Point-in-time
Total Current Liabilities	`LiabilitiesCurrent`	$499.30M	USD	Point-in-time
Total Current Liabilities	`LiabilitiesCurrent`	$838.50M	USD	Point-in-time
Long-term debt	`LongTermDebtNoncurrent`	$2.63B	USD	Point-in-time
Long-term debt	`LongTermDebtNoncurrent`	$2.43B	USD	Point-in-time
Deferred income taxes, net	`DeferredIncomeTaxLiabilitiesNet`	$733.00M	USD	Point-in-time
Deferred income taxes, net	`DeferredIncomeTaxLiabilitiesNet`	$781.50M	USD	Point-in-time
Noncurrent operating lease liabilities	`OperatingLeaseLiabilityNoncurrent`	$433.90M	USD	Point-in-time
Noncurrent operating lease liabilities	`OperatingLeaseLiabilityNoncurrent`	$410.40M	USD	Point-in-time
Other noncurrent liabilities	`OtherLiabilitiesNoncurrent`	$370.50M	USD	Point-in-time
Other noncurrent liabilities	`OtherLiabilitiesNoncurrent`	$339.30M	USD	Point-in-time
Total Liabilities	`Liabilities`	$4.69B	USD	Point-in-time
Total Liabilities	`Liabilities`	$4.78B	USD	Point-in-time
Common stock ($0.01 par value; 100.0 shares authorized; 62.3 and 62.4 shares outstanding at December 31, 2020 and 2019, respectively)	`CommonStockValue`	$600.00K	USD	Point-in-time
Common stock ($0.01 par value; 100.0 shares authorized; 62.3 and 62.4 shares outstanding at December 31, 2020 and 2019, respectively)	`CommonStockValue`	$600.00K	USD	Point-in-time
Preferred stock ($0.01 par value; 10.0 shares authorized; no shares outstanding)	`PreferredStockValue`	-	USD	Point-in-time
Preferred stock ($0.01 par value; 10.0 shares authorized; no shares outstanding)	`PreferredStockValue`	-	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$3.44B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$3.42B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-158.40M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-145.80M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$2.61B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$2.08B	USD	Point-in-time
Total Shareholders Equity	`StockholdersEquity`	$5.35B	USD	Point-in-time
Total Shareholders Equity	`StockholdersEquity`	$5.89B	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$2.50M	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$2.60M	USD	Point-in-time
Total Equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.95B	USD	Point-in-time
Total Equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.35B	USD	Point-in-time
Total Equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.89B	USD	Point-in-time
Total Equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.68B	USD	Point-in-time
Total Liabilities and Equity	`LiabilitiesAndStockholdersEquity`	$10.58B	USD	Point-in-time
Total Liabilities and Equity	`LiabilitiesAndStockholdersEquity`	$10.13B	USD	Point-in-time

Income Statement 54 line items

Line Item	Tag	Value	Unit	Period
Total revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$4.24B	USD	Annual
Total revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$4.73B	USD	Annual
Total revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$4.74B	USD	Annual
Total cost of revenues	`CostOfGoodsAndServicesSold`	$3.48B	USD	Annual
Total cost of revenues	`CostOfGoodsAndServicesSold`	$3.56B	USD	Annual
Total cost of revenues	`CostOfGoodsAndServicesSold`	$3.28B	USD	Annual
Gross Profit	`GrossProfit`	$1.25B	USD	Annual
Gross Profit	`GrossProfit`	$1.18B	USD	Annual
Gross Profit	`GrossProfit`	$966.60M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$302.70M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$305.90M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$280.60M	USD	Annual
Acquisition-related expenses, net	`BusinessCombinationAcquisitionRelatedCosts`	$13.50M	USD	Annual
Acquisition-related expenses, net	`BusinessCombinationAcquisitionRelatedCosts`	$1.30M	USD	Annual
Acquisition-related expenses, net	`BusinessCombinationAcquisitionRelatedCosts`	$500.00K	USD	Annual
Other operating income, net	`OtherOperatingIncomeExpenseNet`	$59.80M	USD	Annual
Other operating income, net	`OtherOperatingIncomeExpenseNet`	$9.10M	USD	Annual
Other operating income, net	`OtherOperatingIncomeExpenseNet`	$18.20M	USD	Annual
Earnings from Operations	`OperatingIncomeLoss`	$1.01B	USD	Annual
Earnings from Operations	`OperatingIncomeLoss`	$884.90M	USD	Annual
Earnings from Operations	`OperatingIncomeLoss`	$690.70M	USD	Annual
Interest expense	`InterestExpense`	$118.10M	USD	Annual
Interest expense	`InterestExpense`	$129.30M	USD	Annual
Interest expense	`InterestExpense`	$137.10M	USD	Annual
Other nonoperating (income) and expenses, net	`OtherNonoperatingIncomeExpense`	$2.00M	USD	Annual
Other nonoperating (income) and expenses, net	`OtherNonoperatingIncomeExpense`	$22.50M	USD	Annual
Other nonoperating (income) and expenses, net	`OtherNonoperatingIncomeExpense`	$-7.30M	USD	Annual
Earnings before income tax expense	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$576.10M	USD	Annual
Earnings before income tax expense	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$889.30M	USD	Annual
Earnings before income tax expense	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$748.30M	USD	Annual
Income tax expense	`IncomeTaxExpenseBenefit`	$105.70M	USD	Annual
Income tax expense	`IncomeTaxExpenseBenefit`	$136.30M	USD	Annual
Income tax expense	`IncomeTaxExpenseBenefit`	$168.20M	USD	Annual
Consolidated net earnings	`ProfitLoss`	$612.00M	USD	Annual
Consolidated net earnings	`ProfitLoss`	$470.40M	USD	Annual
Consolidated net earnings	`ProfitLoss`	$721.10M	USD	Annual
Less: Net earnings attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$100.00K	USD	Annual
Less: Net earnings attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$100.00K	USD	Annual
Less: Net earnings attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$400.00K	USD	Annual
Net Earnings Attributable to Martin Marietta	`NetIncomeLoss`	$470.00M	USD	Annual
Net Earnings Attributable to Martin Marietta	`NetIncomeLoss`	$611.90M	USD	Annual
Net Earnings Attributable to Martin Marietta	`NetIncomeLoss`	$721.00M	USD	Annual
Basic attributable to common shareholders	`EarningsPerShareBasic`	$9.77	USD	Annual
Basic attributable to common shareholders	`EarningsPerShareBasic`	$11.56	USD	Annual
Basic attributable to common shareholders	`EarningsPerShareBasic`	$7.46	USD	Annual
Diluted attributable to common shareholders	`EarningsPerShareDiluted`	$9.74	USD	Annual
Diluted attributable to common shareholders	`EarningsPerShareDiluted`	$7.43	USD	Annual
Diluted attributable to common shareholders	`EarningsPerShareDiluted`	$11.54	USD	Annual
Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	62.90M	shares	Annual
Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	62.30M	shares	Annual
Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	62.50M	shares	Annual
Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	62.70M	shares	Annual
Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	62.40M	shares	Annual
Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	63.10M	shares	Annual

Cash Flow Statement 92 line items

Line Item	Tag	Value	Unit	Period
Consolidated net earnings	`ProfitLoss`	$612.00M	USD	Annual
Consolidated net earnings	`ProfitLoss`	$470.40M	USD	Annual
Consolidated net earnings	`ProfitLoss`	$721.10M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$393.50M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$371.50M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$344.00M	USD	Annual
Stock-based compensation expense	`ShareBasedCompensation`	$34.10M	USD	Annual
Stock-based compensation expense	`ShareBasedCompensation`	$29.30M	USD	Annual
Stock-based compensation expense	`ShareBasedCompensation`	$30.00M	USD	Annual
Gains on divestitures and sales of assets	`GainLossOnDispositionOfAssets`	$3.10M	USD	Annual
Gains on divestitures and sales of assets	`GainLossOnDispositionOfAssets`	$73.00M	USD	Annual
Gains on divestitures and sales of assets	`GainLossOnDispositionOfAssets`	$39.30M	USD	Annual
Deferred income taxes, net	`DeferredIncomeTaxExpenseBenefit`	$43.80M	USD	Annual
Deferred income taxes, net	`DeferredIncomeTaxExpenseBenefit`	$85.10M	USD	Annual
Deferred income taxes, net	`DeferredIncomeTaxExpenseBenefit`	$29.40M	USD	Annual
Noncash portion of asset and portfolio rationalization charge	`NoncashPortionOfAssetAndPortfolioRationalizationCharge`	$17.00M	USD	Annual
Other items, net	`OtherNoncashIncomeExpense`	$9.00M	USD	Annual
Other items, net	`OtherNoncashIncomeExpense`	$-2.10M	USD	Annual
Other items, net	`OtherNoncashIncomeExpense`	$-8.60M	USD	Annual
Accounts receivable, net	`IncreaseDecreaseInAccountsReceivable`	$50.40M	USD	Annual
Accounts receivable, net	`IncreaseDecreaseInAccountsReceivable`	$-6.10M	USD	Annual
Accounts receivable, net	`IncreaseDecreaseInAccountsReceivable`	$10.60M	USD	Annual
Inventories, net	`IncreaseDecreaseInInventories`	$19.30M	USD	Annual
Inventories, net	`IncreaseDecreaseInInventories`	$22.00M	USD	Annual
Inventories, net	`IncreaseDecreaseInInventories`	$27.70M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayableTrade`	$25.90M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayableTrade`	$-34.00M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayableTrade`	$20.10M	USD	Annual
Other assets and liabilities, net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$179.90M	USD	Annual
Other assets and liabilities, net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$20.20M	USD	Annual
Other assets and liabilities, net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$34.20M	USD	Annual
Net Cash Provided by Operating Activities	`NetCashProvidedByUsedInOperatingActivities`	$966.10M	USD	Annual
Net Cash Provided by Operating Activities	`NetCashProvidedByUsedInOperatingActivities`	$1.05B	USD	Annual
Net Cash Provided by Operating Activities	`NetCashProvidedByUsedInOperatingActivities`	$705.10M	USD	Annual
Additions to property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$393.50M	USD	Annual
Additions to property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$359.70M	USD	Annual
Additions to property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$376.00M	USD	Annual
Acquisitions, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$1.64B	USD	Annual
Acquisitions, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$65.10M	USD	Annual
Proceeds from divestitures and sales of assets	`ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets`	$8.40M	USD	Annual
Proceeds from divestitures and sales of assets	`ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets`	$69.10M	USD	Annual
Proceeds from divestitures and sales of assets	`ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets`	$142.30M	USD	Annual
Payment of railcar construction advances	`RepaymentsOfAdvancesForConstruction`	$79.40M	USD	Annual
Reimbursement of railcar construction advances	`ProceedsFromAdvancesForConstruction`	$79.40M	USD	Annual
Investments in life insurance contracts, net	`PaymentsForProceedsFromLifeInsurancePolicies`	$-800.00K	USD	Annual
Investments in life insurance contracts, net	`PaymentsForProceedsFromLifeInsurancePolicies`	$111.20M	USD	Annual
Investments in life insurance contracts, net	`PaymentsForProceedsFromLifeInsurancePolicies`	$-600.00K	USD	Annual
Other investing activities, net	`PaymentsForProceedsFromOtherInvestingActivities`	$16.00M	USD	Annual
Other investing activities, net	`PaymentsForProceedsFromOtherInvestingActivities`	$1.40M	USD	Annual
Net Cash Used for Investing Activities	`NetCashProvidedByUsedInInvestingActivities`	$-409.70M	USD	Annual
Net Cash Used for Investing Activities	`NetCashProvidedByUsedInInvestingActivities`	$-385.90M	USD	Annual
Net Cash Used for Investing Activities	`NetCashProvidedByUsedInInvestingActivities`	$-1.95B	USD	Annual
Borrowings of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$628.10M	USD	Annual
Borrowings of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$625.00M	USD	Annual
Borrowings of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$1.00B	USD	Annual
Repayments of long-term debt	`RepaymentsOfLongTermDebt`	$975.10M	USD	Annual
Repayments of long-term debt	`RepaymentsOfLongTermDebt`	$777.10M	USD	Annual
Repayments of long-term debt	`RepaymentsOfLongTermDebt`	$910.10M	USD	Annual
Debt issuance costs	`PaymentsOfDebtIssuanceCosts`	$3.90M	USD	Annual
Debt issuance costs	`PaymentsOfDebtIssuanceCosts`	$2.00M	USD	Annual
Payments on finance lease obligations	`FinanceLeasePrincipalPayments`	$11.00M	USD	Annual
Payments on finance lease obligations	`FinanceLeasePrincipalPayments`	$3.50M	USD	Annual
Payments on capital lease obligations	`RepaymentsOfLongTermCapitalLeaseObligations`	$3.50M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$140.30M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$116.40M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$129.80M	USD	Annual
Repurchases of common stock	`PaymentsForRepurchaseOfCommonStock`	$50.00M	USD	Annual
Repurchases of common stock	`PaymentsForRepurchaseOfCommonStock`	$100.40M	USD	Annual
Repurchases of common stock	`PaymentsForRepurchaseOfCommonStock`	$98.20M	USD	Annual
Payments of deferred acquisition consideration	`PaymentsOfDeferredAcquisitionConsideration`	$6.70M	USD	Annual
Purchase of the noncontrolling interest in the existing joint venture	`PaymentsToAcquireNoncontrollingInterestInExistingJointVenture`	$12.80M	USD	Annual
Distributions to owners of noncontrolling interest	`PaymentsOfDividendsMinorityInterest`	$600.00K	USD	Annual
Proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	$13.70M	USD	Annual
Proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	$2.30M	USD	Annual
Proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	$7.30M	USD	Annual
Shares withheld for employees income tax obligations	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$11.90M	USD	Annual
Shares withheld for employees income tax obligations	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$28.10M	USD	Annual
Shares withheld for employees income tax obligations	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$14.50M	USD	Annual
Net Cash Used for Financing Activities	`NetCashProvidedByUsedInFinancingActivities`	$-158.40M	USD	Annual
Net Cash Used for Financing Activities	`NetCashProvidedByUsedInFinancingActivities`	$-357.00M	USD	Annual
Net Cash Used for Financing Activities	`NetCashProvidedByUsedInFinancingActivities`	$-604.10M	USD	Annual
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-1.40B	USD	Annual
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$283.40M	USD	Annual
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-23.90M	USD	Annual
Cash, Cash Equivalents and Restricted Cash, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$21.00M	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$1.45B	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$304.40M	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$44.90M	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash, end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$21.00M	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash, end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$1.45B	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash, end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$304.40M	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash, end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$44.90M	USD	Point-in-time

Stockholders Equity 42 line items

Line Item	Tag	Value	Unit	Period
Dividends declared	`CommonStockDividendsPerShareDeclared`	$2.24	USD	Annual
Dividends declared	`CommonStockDividendsPerShareDeclared`	$1.84	USD	Annual
Dividends declared	`CommonStockDividendsPerShareDeclared`	$2.06	USD	Annual
Beginning Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.95B	USD	Point-in-time
Beginning Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.35B	USD	Point-in-time
Beginning Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.89B	USD	Point-in-time
Beginning Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.68B	USD	Point-in-time
Beginning Balance (in shares)	`CommonStockSharesOutstanding`	62.30M	shares	Point-in-time
Beginning Balance (in shares)	`CommonStockSharesOutstanding`	62.40M	shares	Point-in-time
Consolidated net earnings	`ProfitLoss`	$612.00M	USD	Annual
Consolidated net earnings	`ProfitLoss`	$470.40M	USD	Annual
Consolidated net earnings	`ProfitLoss`	$721.10M	USD	Annual
Other comprehensive loss	`OtherComprehensiveIncomeLossNetOfTax`	$-14.50M	USD	Annual
Other comprehensive loss	`OtherComprehensiveIncomeLossNetOfTax`	$-12.60M	USD	Annual
Other comprehensive loss	`OtherComprehensiveIncomeLossNetOfTax`	$-2.20M	USD	Annual
Dividends declared	`DividendsCommonStockCash`	$116.40M	USD	Annual
Dividends declared	`DividendsCommonStockCash`	$129.80M	USD	Annual
Dividends declared	`DividendsCommonStockCash`	$140.50M	USD	Annual
Issuances of common stock for stock award plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$6.80M	USD	Annual
Issuances of common stock for stock award plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$14.20M	USD	Annual
Issuances of common stock for stock award plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$16.70M	USD	Annual
Shares withheld for employees income tax obligations	`AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation`	$11.90M	USD	Annual
Shares withheld for employees income tax obligations	`AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation`	$14.80M	USD	Annual
Shares withheld for employees income tax obligations	`AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation`	$28.10M	USD	Annual
Repurchases of common stock	`StockRepurchasedDuringPeriodValue`	$98.20M	USD	Annual
Repurchases of common stock	`StockRepurchasedDuringPeriodValue`	$100.40M	USD	Annual
Repurchases of common stock	`StockRepurchasedDuringPeriodValue`	$50.00M	USD	Annual
Repurchases of common stock, Shares	`StockRepurchasedDuringPeriodShares`	400,000.00	shares	Annual
Repurchases of common stock, Shares	`StockRepurchasedDuringPeriodShares`	500,000.00	shares	Annual
Repurchases of common stock, Shares	`StockRepurchasedDuringPeriodShares`	200,000.00	shares	Annual
Stock-based compensation expense	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$30.00M	USD	Annual
Stock-based compensation expense	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$29.30M	USD	Annual
Stock-based compensation expense	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$34.10M	USD	Annual
Noncontrolling interest acquired in business combination	`NoncontrollingInterestIncreaseFromBusinessCombination`	$9.00M	USD	Annual
Purchase of the noncontrolling interest in the existing joint venture	`MinorityInterestDecreaseFromRedemptions`	$12.80M	USD	Annual
Distribution to owners of noncontrolling interest	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$600.00K	USD	Annual
Ending Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.95B	USD	Point-in-time
Ending Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.35B	USD	Point-in-time
Ending Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.89B	USD	Point-in-time
Ending Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.68B	USD	Point-in-time
Ending Balance (in shares)	`CommonStockSharesOutstanding`	62.30M	shares	Point-in-time
Ending Balance (in shares)	`CommonStockSharesOutstanding`	62.40M	shares	Point-in-time

Comprehensive Income 48 line items

Line Item	Tag	Value	Unit	Period
Net loss arising during period, tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-7.60M	USD	Annual
Net loss arising during period, tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-8.70M	USD	Annual
Consolidated Net Earnings	`ProfitLoss`	$612.00M	USD	Annual
Consolidated Net Earnings	`ProfitLoss`	$470.40M	USD	Annual
Consolidated Net Earnings	`ProfitLoss`	$721.10M	USD	Annual
Net loss arising during period, tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-4.80M	USD	Annual
Amortization of prior service credit, tax	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax`	$-500.00K	USD	Annual
Amortization of prior service credit, tax	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax`	-	USD	Annual
Amortization of prior service credit, tax	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax`	$-200.00K	USD	Annual
Amortization of actuarial loss, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax`	$-3.20M	USD	Annual
Amortization of actuarial loss, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax`	$-3.60M	USD	Annual
Amortization of actuarial loss, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax`	$-3.80M	USD	Annual
Net loss arising during period, net of tax of $(8.7), $(4.8) and $(7.6), respectively	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-26.60M	USD	Annual
Net loss arising during period, net of tax of $(8.7), $(4.8) and $(7.6), respectively	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-14.50M	USD	Annual
Amount recognized in net periodic pension cost due to settlement, tax	`OtherComprehensiveIncomeFinalizationOfPensionAndNonPensionPostretirementPlanValuationTax`	$700.00K	USD	Annual
Amount recognized in net periodic pension cost due to settlement, tax	`OtherComprehensiveIncomeFinalizationOfPensionAndNonPensionPostretirementPlanValuationTax`	$900.00K	USD	Annual
Amount recognized in net periodic pension cost due to settlement, tax	`OtherComprehensiveIncomeFinalizationOfPensionAndNonPensionPostretirementPlanValuationTax`	-	USD	Annual
Net loss arising during period, net of tax of $(8.7), $(4.8) and $(7.6), respectively	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-22.90M	USD	Annual
Amortization of terminated value of forward starting interest rate swap agreements into interest expense, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax`	-	USD	Annual
Amortization of terminated value of forward starting interest rate swap agreements into interest expense, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax`	-	USD	Annual
Amortization of prior service credit, net of tax of $0.0, $(0.2) and $(0.5), respectively	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$-600.00K	USD	Annual
Amortization of terminated value of forward starting interest rate swap agreements into interest expense, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax`	$-200.00K	USD	Annual
Amortization of prior service credit, net of tax of $0.0, $(0.2) and $(0.5), respectively	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$-100.00K	USD	Annual
Amortization of prior service credit, net of tax of $0.0, $(0.2) and $(0.5), respectively	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$-1.50M	USD	Annual
Amortization of actuarial loss, net of tax of $3.6, $3.8 and $3.2, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-9.50M	USD	Annual
Amortization of actuarial loss, net of tax of $3.6, $3.8 and $3.2, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-11.70M	USD	Annual
Amortization of actuarial loss, net of tax of $3.6, $3.8 and $3.2, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-10.70M	USD	Annual
Amount recognized in net periodic pension cost due to settlement, net of tax of $0.9, $0.0 and $0.7 respectively	`OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationNetOfTax`	$2.20M	USD	Annual
Amount recognized in net periodic pension cost due to settlement, net of tax of $0.9, $0.0 and $0.7 respectively	`OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationNetOfTax`	$2.80M	USD	Annual
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$12.70M	USD	Annual
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$3.40M	USD	Annual
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$13.20M	USD	Annual
Foreign currency translation gain (loss)	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$1.20M	USD	Annual
Foreign currency translation gain (loss)	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$600.00K	USD	Annual
Foreign currency translation gain (loss)	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-2.10M	USD	Annual
Amortization of terminated value of forward starting interest rate swap agreements into interest expense, net of tax of $0.0, $0.0 and $0.2, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-300.00K	USD	Annual
Other Comprehensive Income (Loss), Net of Tax	`OtherComprehensiveIncomeLossNetOfTax`	$-14.50M	USD	Annual
Other Comprehensive Income (Loss), Net of Tax	`OtherComprehensiveIncomeLossNetOfTax`	$-12.60M	USD	Annual
Other Comprehensive Income (Loss), Net of Tax	`OtherComprehensiveIncomeLossNetOfTax`	$-2.20M	USD	Annual
Consolidated comprehensive earnings	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$609.80M	USD	Annual
Consolidated comprehensive earnings	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$708.50M	USD	Annual
Consolidated comprehensive earnings	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$455.90M	USD	Annual
Less: Comprehensive earnings attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$100.00K	USD	Annual
Less: Comprehensive earnings attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$100.00K	USD	Annual
Less: Comprehensive earnings attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$400.00K	USD	Annual
Comprehensive Earnings Attributable to Martin Marietta	`ComprehensiveIncomeNetOfTax`	$609.70M	USD	Annual
Comprehensive Earnings Attributable to Martin Marietta	`ComprehensiveIncomeNetOfTax`	$708.40M	USD	Annual
Comprehensive Earnings Attributable to Martin Marietta	`ComprehensiveIncomeNetOfTax`	$455.50M	USD	Annual

Data is extracted from SEC EDGAR XBRL filings. Values shown are as reported in the filing.