Consolidated Statements of Operations (USD $) In Millions, except Share data in Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Income Statement [Abstract]
Revenue (Note 2)	$ 1,246		$ 945		$ 763
Costs and expenses:
Cost of revenue	40	[1]	18	[1]	12	[1]
Selling and marketing	502	[2]	368	[2]	266	[2]
Technology and content	171	[2]	131	[2]	87	[2]
General and administrative	128	[2]	98	[2]	76	[2]
Depreciation	47	[3]	30	[3]	20	[3]
Amortization of intangible assets	18		6		6
Total costs and expenses:	906		651		467
Operating income	340		294		296
Other income (expense):
Interest expense	(9)		(10)		(11)
Interest income and other, net	(9)				(3)
Total other expense, net	(18)		(10)		(14)
Income before income taxes	322		284		282
Provision for income taxes	(96)		(79)		(87)
Net income	226		205		195
Net (income) loss attributable to noncontrolling interest					1
Net income attributable to TripAdvisor, Inc.	$ 226		$ 205		$ 194
Earnings per share attributable to TripAdvisor, Inc. available to common stockholders (Note 2):
Basic	$ 1.58		$ 1.44		$ 1.39
Diluted	$ 1.55		$ 1.41		$ 1.37
Weighted average common shares outstanding (Note 2):
Basic	142,721		142,854		139,462
Diluted	145,800		145,263		141,341

[1] Excludes amortization as follows:

[2] Includes stock-based compensation expense as follows:

[3] Includes amortization of internal use software and website development costs.