Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details 1)

v2.4.1.9
Summary of Significant Accounting Policies (Details 1) (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended 0 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Jul. 23, 2014
Income (Loss) from Continuing Operations Attributable to Parent $ 178us-gaap_IncomeLossFromContinuingOperations $ 8,780us-gaap_IncomeLossFromContinuingOperations $ 1,160us-gaap_IncomeLossFromContinuingOperations  
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest     $ 254us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity  
Weighted Average Number of Shares Outstanding, Basic 342,000,000us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 355,000,000us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 361,000,000us-gaap_WeightedAverageNumberOfSharesOutstandingBasic  
Weighted Average Number Diluted Shares Outstanding Adjustment 3,000,000us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment 4,000,000us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment 11,000,000us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment  
Weighted Average Number of Shares Outstanding, Diluted 345,000,000us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 359,000,000us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 372,000,000us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding  
Warrant [Member]        
Anti-dilutive shares excluded from EPS 21,000,000us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_WarrantMember
17,000,000us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_WarrantMember
   
Common Class C        
Shares received in exchange       2lmca_NumberofsharesissuedduringtheperiodforeachshareofSeriesAandSeriesBstockheldbyshareholderspriortothedistribution
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassCMember