The maximum equity interest that can be acquired by the company.

No definition available.

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Namespace Prefix:	lexe_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of members of the board of directors that have been appointed by the Company.

+ References

No definition available.

+ Details

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Namespace Prefix:	lexe_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the period over which a proxy is expected over the Expedia Holdings shares.

+ References

No definition available.

+ Details

Name:	lexe_PeriodOfProxyOverExpediaSharesHeld
Namespace Prefix:	lexe_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The total number of members of the board of directors.

+ References

No definition available.

+ Details

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Namespace Prefix:	lexe_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of directors appointed by the company.

+ References

No definition available.

+ Details

Name:	lexe_TotalNumberOfBoardOfDirectorsMembersAppointedByCompany
Namespace Prefix:	lexe_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Voting ownership interest in investee.

+ References

No definition available.

+ Details

Name:	lexe_VotingOwnershipInterestInInvestee
Namespace Prefix:	lexe_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571

+ Details

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

- 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

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=lexe_ExpediaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=lexe_LibertyInteractiveMember
Namespace Prefix:
Data Type:	na
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Period Type:

Investment in Expedia, Inc. - Text (Details) - item	Nov. 05, 2016	Nov. 03, 2016	Dec. 31, 2016
Schedule of Equity Method Investments [Line Items]
Proxy period (in months)	18 months
Expedia
Schedule of Equity Method Investments [Line Items]
Percentage of equity interest			15.70%
Voting interest			52.30%
Liberty Interactive \| Expedia
Schedule of Equity Method Investments [Line Items]
Percentage of members of board which can be appointed by the company		20.00%
Number of members in board of directors		13
Number of directors appointed by the company		3
Maximum equity interest that can be acquired		20.01%