Earnings Per Share - Basic and Diluted earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share [Abstract]
Net income attributable to Expedia, Inc.	$ 1	$ 57	$ (136)	$ (29)
Basic (in dollars per share)	$ 0.01	$ 0.37	$ (0.90)	$ (0.19)
Diluted (in dollars per share)	$ 0.01	$ 0.36	$ (0.90)	$ (0.19)
Weighted average number of shares outstanding:
Basic (in shares)	150,076	151,582	150,942	151,060
Dilutive effect of:
Options to purchase common stock	2,058	4,845	0	0
Other dilutive securities	483	606	0	0
Diluted (in shares)	152,617	157,033	150,942	151,060