Segment Information - Performance Measures (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue, Net	$ 1,256	$ 97	$ 112	$ 116	$ 104	$ 116	$ 120	$ 125	$ 1,581	$ 465	$ 455
Adjusted OIBDA									146	33	31
Expedia | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue, Net									1,170
Adjusted OIBDA									133
Vitalize | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue, Net									411	465	455
Adjusted OIBDA									15	$ 33	$ 31
Corporate and Other | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Adjusted OIBDA									$ (2)