XML 51 R57.htm IDEA: XBRL DOCUMENT v2.4.1.9
Summary of Estimated Fair values of Assets Acquired and Liabilities Assumed (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Assets:      
Goodwill $ 2,068,799us-gaap_Goodwill $ 616,621us-gaap_Goodwill $ 616,204us-gaap_Goodwill
Texas Industries Inc.      
Assets:      
Cash and cash equivalents 59,887us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
/ us-gaap_BusinessAcquisitionAxis
= mlm_TexasIndustriesIncMember
   
Receivables 160,807us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables
/ us-gaap_BusinessAcquisitionAxis
= mlm_TexasIndustriesIncMember
   
Inventory 129,932us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory
/ us-gaap_BusinessAcquisitionAxis
= mlm_TexasIndustriesIncMember
   
Other current assets 61,594us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther
/ us-gaap_BusinessAcquisitionAxis
= mlm_TexasIndustriesIncMember
   
Property, plant and equipment 1,602,860us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
/ us-gaap_BusinessAcquisitionAxis
= mlm_TexasIndustriesIncMember
   
Real estate and other investments 59,584mlm_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInvestments
/ us-gaap_BusinessAcquisitionAxis
= mlm_TexasIndustriesIncMember
   
Intangible assets, other than goodwill 559,277us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= mlm_TexasIndustriesIncMember
   
Other noncurrent assets 6,525us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets
/ us-gaap_BusinessAcquisitionAxis
= mlm_TexasIndustriesIncMember
   
Goodwill 1,484,272us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= mlm_TexasIndustriesIncMember
   
Total Assets 4,124,738us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
/ us-gaap_BusinessAcquisitionAxis
= mlm_TexasIndustriesIncMember
   
Liabilities:      
Accounts payable and accrued expenses 297,404mlm_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccountsPayableAndAccruedExpenses
/ us-gaap_BusinessAcquisitionAxis
= mlm_TexasIndustriesIncMember
   
Notes and contracts payable and capital leases 747,426mlm_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebtAndCapitalLeases
/ us-gaap_BusinessAcquisitionAxis
= mlm_TexasIndustriesIncMember
   
Deferred income tax liabilities 322,974us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilitiesNoncurrent
/ us-gaap_BusinessAcquisitionAxis
= mlm_TexasIndustriesIncMember
   
Total Liabilities 1,367,804us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
/ us-gaap_BusinessAcquisitionAxis
= mlm_TexasIndustriesIncMember
   
Total Consideration $ 2,756,934us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
/ us-gaap_BusinessAcquisitionAxis
= mlm_TexasIndustriesIncMember