Segment Information - Performance Measures (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Segment Reporting, Revenue Reconciling Item [Line Items]
Adjusted OIBDA	$ 159	$ 123
Corporate and other
Segment Reporting, Revenue Reconciling Item [Line Items]
Adjusted OIBDA	(14)	(4)
Expedia \| Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Adjusted OIBDA	$ 173	$ 127

Adjusted OIBDA is defined by the Company as revenue less operating expenses and selling, general and administrative expenses (excluding stock-based compensation). This measure of performance excludes depreciation and amortization, stock-based compensation, separately reported litigation settlements and restructurings and impairment charges that are included in the measurement of operating income pursuant to GAAP.

No definition available.

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Namespace Prefix:	lexe_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration