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Income Taxes (Details 2) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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|
| Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract] | |||
| Computed expected tax benefit (expense) | $ (161)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate | $ (3,100)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate | $ (570)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate |
| Gain on consolidation of equity method affiliate not taxable | 3,054lmca_GainOnConsolidationOfEquityMethodAffiliateNotTaxable | ||
| Taxable liquidation of a consolidated subsidiary | 107lmca_TaxableLiquidationOfConsolidatedSubsidiary | 101lmca_TaxableLiquidationOfConsolidatedSubsidiary | |
| Income tax reconciliation, non-taxable gain on exchange of consolidated subsidiary | 174lmca_Incometaxreconciliationnontaxablegainonexchangeofconsolidatedsubsidiary | ||
| Dividends received deductions | 99us-gaap_IncomeTaxReconciliationDeductionsDividends | 46us-gaap_IncomeTaxReconciliationDeductionsDividends | 40us-gaap_IncomeTaxReconciliationDeductionsDividends |
| Income tax reconciliation, sale of subsidiary shares to subsidiary treated as dividend for tax | (123)lmca_Incometaxreconciliationsaleofsubsidiarysharestosubsidiarytreatedasdividendfortax | (56)lmca_Incometaxreconciliationsaleofsubsidiarysharestosubsidiarytreatedasdividendfortax | |
| State and local income taxes, net of federal income taxes | (4)us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes | 11us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes | (46)us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes |
| Change in valuation allowance affecting tax expense | (2)us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance | 9us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance | 1us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance |
| Recognition of tax benefits not previously recognized, net | 11us-gaap_IncomeTaxReconciliationTaxContingencies | 5us-gaap_IncomeTaxReconciliationTaxContingencies | |
| Other, net | 7us-gaap_IncomeTaxReconciliationOtherAdjustments | (3)us-gaap_IncomeTaxReconciliationOtherAdjustments | |
| Income tax benefit (expense) | $ (66)us-gaap_IncomeTaxExpenseBenefit | $ 135us-gaap_IncomeTaxExpenseBenefit | $ (469)us-gaap_IncomeTaxExpenseBenefit |
| X | ||||||||||
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- Definition
Gain on consolidation of equity method affiliate not taxable for income tax purposes No definition available.
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| X | ||||||||||
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- Definition
Tax impact of non-taxable gain on exchange of consolidated subsidiary (for rate reconciliation) No definition available.
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| X | ||||||||||
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- Definition
Tax impact of sale of subsidiary shares to subsidiary treated as dividend for tax (for rate reconciliation) No definition available.
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| X | ||||||||||
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- Definition
Taxable liquidation of a consolidated subsidiary No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for dividend. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in income tax contingencies. Including, but not limited to, domestic tax contingency, foreign tax contingency, state and local tax contingency, and other contingencies. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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