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Investments in Affiliates Accounted for Using the Equity Method (Details 2) (USD $)
Share data in Millions, except Per Share data, unless otherwise specified |
3 Months Ended | 1 Months Ended | |
|---|---|---|---|
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Mar. 31, 2015
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Mar. 31, 2014
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May 31, 2013
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| Schedule of Equity Method Investments [Line Items] | |||
| Gain (loss) on dilution of investment in affiliate | $ (1,000,000)lmca_Gainlossondilutionofinvestmentinaffiliate | $ (50,000,000)lmca_Gainlossondilutionofinvestmentinaffiliate | |
| Live Nation | |||
| Schedule of Equity Method Investments [Line Items] | |||
| Equity Method Investment, Ownership Percentage |
27.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = lmca_LiveNationMember |
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| SIRIUS XM | |||
| Schedule of Equity Method Investments [Line Items] | |||
| Due to Related Parties, Current |
5,000,000us-gaap_DueToRelatedPartiesCurrent / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = lmca_SiriusXmMember |
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| Due to Related Parties, Noncurrent |
13,000,000us-gaap_DueToRelatedPartiesNoncurrent / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = lmca_SiriusXmMember |
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| Due from Related Parties, Current |
3,000,000us-gaap_DueFromRelatedPartiesCurrent / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = lmca_SiriusXmMember |
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| Revenue from Related Parties |
14,000,000us-gaap_RevenueFromRelatedParties / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = lmca_SiriusXmMember |
12,000,000us-gaap_RevenueFromRelatedParties / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = lmca_SiriusXmMember |
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| Sirius XM Canada | |||
| Schedule of Equity Method Investments [Line Items] | |||
| Equity Method Investment, Ownership Percentage |
37.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = lmca_SiriusXmCanadaMember |
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| Dividends |
4,000,000us-gaap_Dividends / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = lmca_SiriusXmCanadaMember |
4,000,000us-gaap_Dividends / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = lmca_SiriusXmCanadaMember |
|
| Charter Communications | |||
| Schedule of Equity Method Investments [Line Items] | |||
| Purchase of shares in equity method investee |
26.9lmca_PurchaseOfSharesInEquityMethodInvestee / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = lmca_CharterCommunicationsMember |
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| Warrants acquired |
1.1lmca_WarrantsAcquired / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = lmca_CharterCommunicationsMember |
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| Equity Method Investment, Aggregate Cost |
2,600,000,000us-gaap_EquityMethodInvestmentAggregateCost / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = lmca_CharterCommunicationsMember |
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| Equity Method Investment, Ownership Percentage |
27.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = lmca_CharterCommunicationsMember |
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| Price-per-share |
$ 95.50us-gaap_SaleOfStockPricePerShare / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = lmca_CharterCommunicationsMember |
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| Gain (loss) on dilution of investment in affiliate |
$ (46,000,000)lmca_Gainlossondilutionofinvestmentinaffiliate / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = lmca_CharterCommunicationsMember |
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| X | ||||||||||
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- Definition
Gain (loss) on dilution of investment in affiliate No definition available.
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- Definition
Number of shares purchased in equity method investee No definition available.
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- Definition
Warrants acquired No definition available.
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- Definition
Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared, for example, but not limited to, common and preferred stock. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Portion of the carrying amount as of the balance sheet date of obligations due all related parties that is payable after one year or beyond the normal operating cycle if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This element represents the aggregate cost of investments accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction. No definition available.
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