Stockholders' Equity (Details) (USD $)
In Millions, except Share data, unless otherwise specified |
0 Months Ended | 1 Months Ended | 3 Months Ended | 12 Months Ended | 0 Months Ended | ||
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Oct. 03, 2013
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Oct. 31, 2013
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Dec. 31, 2013
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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Jul. 23, 2014
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Preferred stock, shares issued | 0us-gaap_PreferredStockSharesIssued | 0us-gaap_PreferredStockSharesIssued | 0us-gaap_PreferredStockSharesIssued | ||||
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value | $ 17us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue | $ 23us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue | $ 494us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue | ||||
Stock Repurchased and Retired During Period, Shares | 0us-gaap_StockRepurchasedAndRetiredDuringPeriodShares | ||||||
Payments for Repurchase of Common Stock | 140us-gaap_PaymentsForRepurchaseOfCommonStock | 323us-gaap_PaymentsForRepurchaseOfCommonStock | |||||
Shares retired | 6,300,000us-gaap_TreasuryStockSharesRetired | ||||||
Cash paid in exchange transaction | 417lmca_Cashincludedinexchangetransaction | 429lmca_Cashincludedinexchangetransaction | |||||
Nonmonetary Transaction, Gain (Loss) Recognized on Transfer | 496us-gaap_NonmonetaryTransactionGainLossRecognizedOnTransfer | (496)us-gaap_NonmonetaryTransactionGainLossRecognizedOnTransfer | |||||
Common Class A | |||||||
Votes per share |
1lmca_NumberOfVotesPerShare / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |
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Number of shares received in exchange for a share of Series B |
1lmca_CommonSharesReceivedInExchangeForOneShareOfSeriesB / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |
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Stock reserved for future issuance |
3,200,000us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |
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Stock Repurchased and Retired During Period, Shares |
1,264,550us-gaap_StockRepurchasedAndRetiredDuringPeriodShares / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |
3,591,271us-gaap_StockRepurchasedAndRetiredDuringPeriodShares / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |
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Payments for Repurchase of Common Stock |
$ 140us-gaap_PaymentsForRepurchaseOfCommonStock / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |
$ 323us-gaap_PaymentsForRepurchaseOfCommonStock / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |
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Common Stock, Shares Authorized |
2,000,000,000us-gaap_CommonStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |
2,000,000,000us-gaap_CommonStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |
2,000,000,000us-gaap_CommonStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |
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Common Class B | |||||||
Votes per share |
10lmca_NumberOfVotesPerShare / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember |
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Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number |
0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember |
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Common Stock, Shares Authorized |
75,000,000us-gaap_CommonStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember |
75,000,000us-gaap_CommonStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember |
75,000,000us-gaap_CommonStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember |
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Common Class C | |||||||
Shares received in exchange |
2lmca_NumberofsharesissuedduringtheperiodforeachshareofSeriesAandSeriesBstockheldbyshareholderspriortothedistribution / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassCMember |
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Votes per share |
0lmca_NumberOfVotesPerShare / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassCMember |
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Stock reserved for future issuance |
9,800,000us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassCMember |
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Common Stock, Shares Authorized |
2,000,000,000us-gaap_CommonStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassCMember |
2,000,000,000us-gaap_CommonStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassCMember |
2,000,000,000us-gaap_CommonStockSharesAuthorized / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassCMember |
X | ||||||||||
- Definition
Cash included in exchange transaction No definition available.
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X | ||||||||||
- Definition
The number of common shares received in exchange for one share of series B common stock. No definition available.
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X | ||||||||||
- Definition
The number of shares received in exchange for one share of Series B Common Stock. No definition available.
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X | ||||||||||
- Definition
The number of votes each share of common stock receives. No definition available.
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X | ||||||||||
- Definition
Aggregate number of common shares reserved for future issuance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition
The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition
Disclosure of the difference in values (gain (loss)) between the nonmonetary assets or liabilities exchanged with another entity inclusive of boot (small monetary consideration). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition
The cash outflow to reacquire common stock during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition
Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition
Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition
Number of options outstanding, including both vested and non-vested options. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition
Number of shares that have been repurchased and retired during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition
Number of shares of common and preferred stock retired from treasury during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Details
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X | ||||||||||
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X | ||||||||||
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