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Debt (Details 4) (USD $)
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12 Months Ended |
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Dec. 31, 2014
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| Forecast | Cobb County Major League Baseball Ballpark | |
| Debt Instrument [Line Items] | |
| Other costs and equipment |
$ 50,000,000lmca_OtherCostsAndEquipment / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = lmca_CobbCountyMajorLeagueBaseballBallparkMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember |
| Cobb Marietta Coliseum And Exhibit Hall Authority | Forecast | Cobb County Major League Baseball Ballpark | |
| Debt Instrument [Line Items] | |
| Due from affiliate |
392,000,000us-gaap_DueFromAffiliates / us-gaap_CounterpartyNameAxis = lmca_CobbMariettaColiseumAndExhibitHallAutthorityMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = lmca_CobbCountyMajorLeagueBaseballBallparkMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember |
| Affiliated Entities | Forecast | Cobb County Ballpark Mixed Use Development | |
| Debt Instrument [Line Items] | |
| Due from affiliate |
363,000,000us-gaap_DueFromAffiliates / us-gaap_CounterpartyNameAxis = lmca_AffiliatedEntitiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = lmca_CobbCountyBallparkMixedUseDevelopmentMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember |
| ANLBC | |
| Debt Instrument [Line Items] | |
| Area of land acquired (in acres) |
82lmca_AreaOfLandAcquired / dei_LegalEntityAxis = lmca_AnlbcMember |
| Number of credit facilities |
2lmca_NumberOfCreditFacilities / dei_LegalEntityAxis = lmca_AnlbcMember |
| ANLBC | Revolving Credit Facility | |
| Debt Instrument [Line Items] | |
| Line of Credit Facility, Maximum Borrowing Capacity |
250,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / dei_LegalEntityAxis = lmca_AnlbcMember / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember |
| Long-term Line of Credit |
100,000,000us-gaap_LineOfCredit / dei_LegalEntityAxis = lmca_AnlbcMember / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember |
| ANLBC | Forecast | Cobb County Major League Baseball Ballpark | |
| Debt Instrument [Line Items] | |
| Construction and Development Costs |
672,000,000us-gaap_ConstructionAndDevelopmentCosts / dei_LegalEntityAxis = lmca_AnlbcMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = lmca_CobbCountyMajorLeagueBaseballBallparkMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember |
| ANLBC | Forecast | Cobb County Ballpark Mixed Use Development | |
| Debt Instrument [Line Items] | |
| Construction and Development Costs |
452,000,000us-gaap_ConstructionAndDevelopmentCosts / dei_LegalEntityAxis = lmca_AnlbcMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = lmca_CobbCountyBallparkMixedUseDevelopmentMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember |
| Cobb Marietta Coliseum And Exhibit Hall Authority | Forecast | Cobb County Major League Baseball Ballpark | Bonds Payable | |
| Debt Instrument [Line Items] | |
| Debt issuance amount |
$ 368,000,000us-gaap_DebtInstrumentFaceAmount / dei_LegalEntityAxis = lmca_CobbMariettaColiseumAndExhibitHallAutthorityMember / us-gaap_LongtermDebtTypeAxis = us-gaap_CorporateDebtSecuritiesMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = lmca_CobbCountyMajorLeagueBaseballBallparkMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember |
| X | ||||||||||
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- Definition
The area of land that has been acquired. No definition available.
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- Definition
The number of credit facilities. No definition available.
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- Definition
The amount of other costs and expenses related to the new ballpark. No definition available.
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- Definition
The aggregate costs related to construction and development services during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Face (par) amount of debt instrument at time of issuance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
For an unclassified balance sheet, amount of receivables due from an entity that is affiliated with the reporting entity by means of direct or indirect ownership. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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