jvid视频 Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Cover
- Document And Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Basis of Presentation (Details)

v3.8.0.1

Basis of Presentation (Details) - USD ($) $ in Millions		12 Months Ended			60 Months Ended
Basis of Presentation (Details) - USD ($) $ in Millions	Jul. 23, 2014	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2017	Jan. 23, 2017	Sep. 07, 2016	Nov. 04, 2014
Entity Information [Line Items]	听	听	听	听	听	听	听	听
Number of shares received in spin-off	听	听	听	听	听	听	听	0.25
Additional paid in capital deficit reclassification	听	听	听	$ 499	听	听	听	听
Related Party Transaction, Amounts of Transaction	听	$ 24	$ 21	$ 23	听	听	听	听
Stock Repurchased and Retired During Period, Shares	听	0	0	9,200,000	听	听	听	听
Payments for Repurchase of Common Stock	听	听	听	$ 350	听	听	听	听
Starz, LLC	听	听	听	听	听	听	听	听
Entity Information [Line Items]	听	听	听	听	听	听	听	听
Related Party Transaction, Amounts of Transaction	听	$ 4	听	听	听	听	听	听
SIRIUS XM	听	听	听	听	听	听	听	听
Entity Information [Line Items]	听	听	听	听	听	听	听	听
Stock Repurchased and Retired During Period, Shares	听	听	听	听	2,500,000,000	听	听	听
Payments for Repurchase of Common Stock	听	听	听	听	$ 9,400	听	听	听
Ownership Interest In Investee	听	70.00%	听	听	70.00%	听	听	听
jvid视频 \| Common Class C	听	听	听	听	听	听	听	听
Entity Information [Line Items]	听	听	听	听	听	听	听	听
Number of Shares Issued During The Period For Each Share of Series A and Series B Stock Held By Shareholders Prior To The Distribution	2	听	听	听	听	听	听	听
Delta Topco	听	听	听	听	听	听	听	听
Entity Information [Line Items]	听	听	听	听	听	听	听	听
Business Acquisition, Percentage of Voting Interests Acquired	听	听	听	听	听	100.00%	20.00%	听
Maximum \| Delta Topco	听	听	听	听	听	听	听	听
Entity Information [Line Items]	听	听	听	听	听	听	听	听
Business Acquisition, Percentage of Voting Interests Acquired	听	听	听	听	听	听	20.00%	听

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	dei_EntityInformationLineItems
Namespace Prefix:	dei_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Adjustment to additional paid in capital for a deficit reclassification.

+ References

No definition available.

+ Details

Name:	lmca_AdjustmentToAdditionalPaidInCapitalDeficitReclassification
Namespace Prefix:	lmca_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The number of shares received in exchange for one share of Series A and Series B Common Stock.

+ References

No definition available.

+ Details

Name:	lmca_NumberOfSharesIssuedDuringPeriodForEachShareOfSeriesAndSeriesBStockHeldByShareholdersPriorToDistribution
Namespace Prefix:	lmca_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares of Liberty Broadband common stock received by shareholders in the spin-off of Liberty Broadband from Liberty per share of jvid视频 common stock owned at the spin-off record date

+ References

No definition available.

+ Details

Name:	lmca_Numberofsharesreceivedinspinoff
Namespace Prefix:	lmca_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Ownership interest in investee

+ References

No definition available.

+ Details

Name:	lmca_OwnershipInterestInInvestee
Namespace Prefix:	lmca_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

Name:	us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash outflow to reacquire common stock during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585

+ Details

Name:	us-gaap_PaymentsForRepurchaseOfCommonStock
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of transactions with related party during the financial reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864

+ Details

Name:	us-gaap_RelatedPartyTransactionAmountsOfTransaction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of shares that have been repurchased and retired during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_StockRepurchasedAndRetiredDuringPeriodShares
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=lmca_StarzLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=lmca_SiriusXmMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	lmca_EconomicPerformanceGroupAxis=lmca_LibertyMediaCorporationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=lmca_DeltaTopcoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: