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Long-Term Debt and Capital Lease Obligations - Debt Table (Details) - USD ($) $ in Millions	Sep. 30, 2017	Jun. 13, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Principal	$ 4,689
Total obligations	4,901		$ 3,795
Less portion classified as current	(547)		(7)
Total long-term debt	4,354		3,788
Expedia Holdings Margin Loan
Debt Instrument [Line Items]
total debt			350
1.0% Exchangeable Senior Debentures
Debt Instrument [Line Items]
Principal	400	$ 400
total debt	427
Expedia 7.456% Notes
Debt Instrument [Line Items]
Principal	500
total debt	525		544
Expedia 5.95% Notes
Debt Instrument [Line Items]
Principal	750
total debt	820		837
Expedia 2.5% Notes
Debt Instrument [Line Items]
Principal	768
total debt	812		727
Expedia 4.5% Notes
Debt Instrument [Line Items]
Principal	500
total debt	521		523
Expedia 5.0% Notes
Debt Instrument [Line Items]
Principal	750
total debt	785		787
Expedia 3.8% Notes
Debt Instrument [Line Items]
Principal	1,000
total debt	990
Vitalize Secured Notes
Debt Instrument [Line Items]
Principal	8
total debt	8		13
Vitalize Revolving line of credit due 2020
Debt Instrument [Line Items]
Principal	11
total debt	11		11
Capital Lease Obligations
Debt Instrument [Line Items]
Principal	2
Capital lease obligations	$ 2		$ 3