Income Taxes - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	12 Months Ended
	Jan. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2011	Dec. 31, 2013
Income Taxes [Line Items]
Decrease in income tax payable attributable to stock-based compensation		$ (21)	$ (63)	$ (32)
Valuation allowance on deferred tax assets		27	17
Net operating loss carryforwards		46	31
Foreign advertising spend		10	8
Increase related to additional foreign net operating losses			10
Undistributed earnings of foreign subsidiaries		$ 828
Income tax expense at federal statutory rate		35.00%
Tax benefit from subsidiary		$ 6	13
Unrecognized tax benefits		105	89	$ 67		$ 36
Unrecognized tax benefits that would impact effective tax rate		63
Total gross interest and penalties accrued		$ 9	$ 6
Minimum | Subsequent Event | Expedia | IRS | Tax Years 2009 and 2010
Income Taxes [Line Items]
Increase in income tax expense due to proposed adjustments related to transfer pricing with foreign subsidiary, estimated	$ 10
Maximum | Subsequent Event | Expedia | IRS | Tax Years 2009 and 2010
Income Taxes [Line Items]
Increase in income tax expense due to proposed adjustments related to transfer pricing with foreign subsidiary, estimated	$ 14
Singapore
Income Taxes [Line Items]
Income tax expense at federal statutory rate					5.00%
Singapore's statutory tax rate					17.00%
Tax incentive agreement expiration date		Jun. 30, 2021
Decrease to the 2015 provision for income tax expense		$ 2
Increase in Diluted EPS		$ 0.01
Federal
Income Taxes [Line Items]
Operating loss carryforwards		$ 23
Expiration date of NOLs		Between 2020 and 2036
State
Income Taxes [Line Items]
Operating loss carryforwards		$ 47
Expiration date of NOLs		Between 2020 and 2036
Foreign
Income Taxes [Line Items]
Operating loss carryforwards		$ 124
Expiration date of NOLs		Between 2017 and 2030
Net operating loss carryforwards		$ 17
Foreign advertising spend		$ 10