Stock-Based Compensation - Expedia Option Activity (Details) - 2005 Expedia Stock and Annual Incentive Plan - Expedia $ / shares in Units, shares in Thousands, $ in Millions	2 Months Ended	12 Months Ended
	Dec. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2016 USD ($) $ / shares shares
Number of shares
Awards outstanding upon Expedia Holdings Split-Off | shares		19,081
Granted (in shares) | shares	63
Exercised (in shares) | shares	(207)
Forfeited/Cancelled (in shares) | shares	(96)
Options outstanding, ending balances | shares	18,841	18,841
Options Exercisable | shares	5,770	5,770
Weighted average exercise price
Awards outstanding upon Expedia Holdings Split-Off (in dollars per share) | $ / shares		$ 83.69
Granted (in dollars per share) | $ / shares	$ 126.58
Exercised (in dollars per share) | $ / shares	52.41
Forfeited/Cancelled (in dollars per share) | $ / shares	95.21
Weighted average exercise price, ending balances | $ / shares	84.07	84.07
Exercisable (in dollars per share) | $ / shares	$ 58.27	$ 58.27
Additional disclosures
Outstanding Weighted Average Remaining contractual term		4 years 8 months 12 days
Exercisable Weighted Average Remaining contractual term		3 years 1 month 6 days
Outstanding Aggregate Intrinsic Value | $	$ 552	$ 552
Exercisable Aggregate Intrinsic Value | $	318	$ 318
Aggregate intrinsic value of all options exercised | $	$ 15