trip-10k_20161231.htm

General and administrative (Note 17)

$ 1,480

$ 1,492

$ 1,246

Costs and expenses:

Cost of revenue

^[1]

Selling and marketing

^[2]

756

692

502

Technology and content

^[2]

243

207

171

^[2]

143

210

128

Depreciation

Total costs and expenses

1,314

1,260

906

Interest income and other, net (Note 18)

166

232

340

Other income (expense):

Interest expense

(12)

(10)

(9)

(3)

(9)

Total other income (expense), net

(15)

(18)

Income before income taxes

151

239

322

(31)

(41)

(96)

Earnings per share attributable to common stockholders (Note 5):

$ 120

$ 198

$ 226

Basic

$ 0.83

$ 1.38

$ 1.58

Diluted

$ 0.82

$ 1.36

$ 1.55

Weighted average common shares outstanding (Note 5):

Basic

145,443

143,836

142,721

Diluted

146,893

145,967

145,800

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

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Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Costs and expenses:
Amortization of intangible assets	$ 32	$ 36	$ 18
Depreciation	69	57	47
Amortization adjustment	53	46	34
Stock-based compensation:
Stock-based compensation	85	72	63
Selling and Marketing
Stock-based compensation:
Stock-based compensation	20	16	13
Technology and Content
Stock-based compensation:
Stock-based compensation	40	28	27
General and Administrative
Stock-based compensation:
Stock-based compensation	25	28	23
Acquired Technology
Costs and expenses:
Amortization of intangible assets	7	9	4
Website Development Costs
Costs and expenses:
Depreciation	$ 46	$ 37	$ 30

XML 19 R4.htm IDEA: XBRL DOCUMENT

Consolidated Statements of Comprehensive Income - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Statement Of Income And Comprehensive Income [Abstract]

Foreign currency translation adjustments

$ 120

$ 198

$ 226

Other comprehensive income (loss):

^[1]

(14)

(33)

(31)

Reclassification adjustment on sale of business included in total other income (expense), net (Note 3)

Total other comprehensive loss

(14)

(32)

(31)

Comprehensive income

$ 106

$ 166

$ 195

[1]	Foreign currency translation adjustments exclude income taxes due to our practice and intention to indefinitely reinvest the earnings of our foreign subsidiaries in those operations. See “Note 15 — Stockholders’ Equity”.

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Consolidated Balance Sheets - USD ($)
$ in Millions

Dec. 31, 2016

Dec. 31, 2015

Current assets:

Cash and cash equivalents (Note 6)

$ 612

$ 614

Short-term marketable securities (Note 6)

118

Accounts receivable, net of allowance for doubtful accounts of $9 and $6, respectively (Note 2)

189

180

Prepaid expenses and other current assets

Total current assets

950

865

Long-term marketable securities (Note 6)

Property and equipment, net (Note 7)

260

247

Intangible assets, net (Note 8)

167

176

Goodwill (Note 8)

736

732

Deferred income taxes, net (Note 10)

Other long-term assets

TOTAL ASSETS

2,238

2,128

Current liabilities:

Accounts payable

Deferred merchant payables (Note 2)

128

105

Deferred revenue

Current portion of debt (Note 9)

^[1]

Taxes payable (Note 10)

Accrued expenses and other current liabilities (Note 11)

127

123

Total current liabilities

423

312

Long-term debt (Note 9)

200

Deferred income taxes, net (Note 10)

Other long-term liabilities (Note 12)

210

189

Total Liabilities

736

716

Commitments and contingencies (Note 13)

Stockholders’ equity: (Note 15)

Preferred stock, $0.001 par value Authorized shares: 100,000,000 Shares issued and outstanding: 0 and 0

Additional paid-in capital

831

741

Retained earnings

945

826

Accumulated other comprehensive loss

(77)

(63)

Treasury stock-common stock, at cost, 3,395,487 and 1,393,131 shares

(197)

(92)

Total Stockholders’ Equity

1,502

1,412

TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY

$ 2,238

$ 2,128

[1]	The weighted-average interest rate on short-term debt was 2.1% as of December 31, 2016.

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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Allowance for doubtful accounts	$ 9	$ 6
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	100,000,000	100,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	1,600,000,000	1,600,000,000
Common stock, shares issued	134,706,467	133,836,242
Common stock, shares outstanding	131,310,980	132,443,111
Treasury stock, shares	3,395,487	1,393,131
Class B Common Stock
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	400,000,000	400,000,000
Common stock, shares issued	12,799,999	12,799,999
Common stock, shares outstanding	12,799,999	12,799,999

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Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Millions	Total	Class B Common Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock
Beginning balance at Dec. 31, 2013	$ 865			$ 608	$ 402		$ (145)
Beginning balance, shares at Dec. 31, 2013		12,799,999	131,537,798				(2,120,709)
Net income	226				226
Other comprehensive loss	(31)					$ (31)
Issuance of common stock related to exercise of options and vesting of RSUs	3			3
Issuance of common stock related to exercise of options and vesting of RSUs, shares			777,667
Tax benefits on equity awards, net	$ 20			20
Repurchase of common stock, shares	0
Withholding taxes on net share settlements of equity awards	$ (33)			(33)
Fair value of stock options assumed in connection with acquisition (Note 3)	5			5
Stock-based compensation	70			70
Other, shares							(73,464)
Ending balance at Dec. 31, 2014	1,125			673	628	(31)	$ (145)
Ending balance, shares at Dec. 31, 2014		12,799,999	132,315,465				(2,194,173)
Net income	198				198
Other comprehensive loss	(32)					(32)
Issuance of common stock related to exercise of options and vesting of RSUs	12			12
Issuance of common stock related to exercise of options and vesting of RSUs, shares			1,520,777
Issuance of treasury stock as charitable contribution (Note 16)	67			14			$ 53
Issuance of treasury stock as charitable contribution, Shares (Note 16)							801,042
Tax benefits on equity awards, net	$ 35			35
Repurchase of common stock, shares	0
Withholding taxes on net share settlements of equity awards	$ (73)			(73)
Stock-based compensation	80			80
Ending balance at Dec. 31, 2015	$ 1,412			741	826	(63)	$ (92)
Ending balance, shares at Dec. 31, 2015	132,443,111	12,799,999	133,836,242				(1,393,131)
Net income	$ 120				120
Cumulative effect adjustment from adoption of ASU 2016-09 (Note 2)	(1)				(1)
Other comprehensive loss	(14)					(14)
Issuance of common stock related to exercise of options and vesting of RSUs	7			7
Issuance of common stock related to exercise of options and vesting of RSUs, shares			870,225
Repurchase of common stock	$ (105)						$ (105)
Repurchase of common stock, shares	(2,002,356)						(2,002,356)
Withholding taxes on net share settlements of equity awards	$ (15)			(15)
Stock-based compensation	98			98
Ending balance at Dec. 31, 2016	$ 1,502			$ 831	$ 945	$ (77)	$ (197)
Ending balance, shares at Dec. 31, 2016	131,310,980	12,799,999	134,706,467				(3,395,487)

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Consolidated Statements of Cash Flows - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Operating activities:

Adjustments to reconcile net income to net cash provided by operating activities:

$ 120

$ 198

$ 226

Depreciation of property and equipment, including amortization of internal-use software and website development

Stock-based compensation expense (Note 4)

Non-cash contribution to charitable foundation (Note 17)

^[1]

Gain on sale of business (Note 3)

^[2]

(20)

Deferred tax benefit

(20)

(37)

(17)

Other, net

Changes in operating assets and liabilities, net of effects from acquisitions and other investments, and dispositions:

Accounts receivable, prepaid expenses and other assets

(24)

(31)

(26)

Accounts payable, accrued expenses and other liabilities

Deferred merchant payables

(9)

Income tax receivables/payables, net

Deferred revenue

Capital expenditures, including internal-use software and website development

321

418

407

Investing activities:

(72)

(109)

(81)

Acquisitions and other investments, net of cash acquired (Note 3)

(43)

(29)

(331)

Proceeds from sale of business, net of cash sold (Note 3)

Purchases of marketable securities

(166)

(205)

(251)

Sales of marketable securities

187

336

Maturities of marketable securities

Other investing activities, net

Net cash used in investing activities

(163)

(58)

(233)

Repurchase of common stock (Note 15)

(105)

Proceeds from exercise of stock options

Payment of withholding taxes on net share settlements of equity awards

(15)

(73)

(33)

Other financing activities, net

(1)

Effect of exchange rate changes on cash and cash equivalents

(143)

(189)

(61)

(17)

(12)

(9)

Net (decrease) increase in cash and cash equivalents

(2)

159

104

Cash and cash equivalents at beginning of period

614

455

351

Cash and cash equivalents at end of period

612

614

455

Supplemental disclosure of cash flow information:

Cash paid during the period for income taxes, net of refunds

Cash paid during the period for interest

Supplemental disclosure of non-cash investing and financing activities:

Stock-based compensation capitalized with internal-use software and website development costs

Capitalization of construction in-process related to build to suit lease

Capital expenditures incurred but not yet paid related to build to suit lease

Chinese Credit Facilities

Proceeds from credit facilities

Payments to credit facilities

(1)

(41)

(3)

2011 Credit Facility

Principal payments on credit facilities

(300)

$ (40)

2015 Credit Facility

Payments to credit facilities

(210)

(90)

Proceeds from credit facility, net of financing costs

101

$ 287

2016 Credit Facility

Proceeds from credit facility, net of financing costs

$ 73

[1]

[2]

See “Note 3 – Acquisitions and Dispositions” for information regarding our gain on sale of business in 2015.

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Organization and Business Description	12 Months Ended
Organization and Business Description	Dec. 31, 2016
Accounting Policies [Abstract]
Organization and Business Description	NOTE 1: ORGANIZATION AND BUSINESS DESCRIPTION We refer to TripAdvisor, Inc. and our wholly-owned subsidiaries as “TripAdvisor,” “the Company,” “us,” “we” and “our” in these notes to the consolidated financial statements. On December 20, 2011 Expedia, Inc. completed a spin-off of TripAdvisor into a separate publicly traded Delaware corporation. We refer to this transaction as the “Spin-Off.” TripAdvisor’s common stock began trading on the NASDAQ as an independent public company on December 21, 2011 under the trading symbol “TRIP.” On December 11, 2012, Liberty Interactive Corporation, or Liberty, purchased an aggregate of 4,799,848 shares of common stock of TripAdvisor from Barry Diller, our former Chairman of the Board of Directors and Senior Executive, and certain of his affiliates (the “Stock Purchase”). As a result, Liberty beneficially owned 18,159,752 shares of our common stock and 12,799,999 shares of our Class B common stock. On August 27, 2014, the entire beneficial ownership of our common stock and Class B common stock held by Liberty was acquired by Liberty TripAdvisor Holdings, Inc., or LTRIP. Simultaneously, Liberty, LTRIP’s former parent company, distributed, by means of a dividend, to the holders of its Liberty Ventures common stock, Liberty’s entire equity interest in LTRIP. We refer to this transaction as the Liberty Spin Off. As a result of the Liberty Spin-Off, effective August 27, 2014, LTRIP became a separate, publicly traded company holding 100% of Liberty’s interest in TripAdvisor. As a result of these transactions, as of December 31, 2016, LTRIP beneficially owned 18,159,752 shares of our common stock and 12,799,999 shares of our Class B common stock, which shares constitute 13.8% of the outstanding shares of common stock and 100% of the outstanding shares of Class B common stock. Assuming the conversion of all of LTRIP’s shares of Class B common stock into common stock, LTRIP would beneficially own 21.5% of the outstanding common stock. Because each share of Class B common stock is generally entitled to ten votes per share and each share of common stock is entitled to one vote per share, LTRIP may be deemed to beneficially own equity securities representing approximately 56.4% of our voting power. Description of Business TripAdvisor is an online travel company, empowering users to plan and book the perfect trip. TripAdvisor’s travel platform aggregates reviews and opinions of members about destinations, accommodations, activities and attractions, and restaurants throughout the world so that our users have access to trusted advice wherever their trips take them. Our platform helps users plan their trips with our unique user-generated content and enables users to compare real-time pricing and availability so that they can book hotels, flights, cruises, vacation rentals, activities and attractions, and restaurant reservations. Our flagship brand is TripAdvisor. TripAdvisor-branded websites include tripadvisor.com in the United States and localized versions of the website in 48 markets worldwide. In addition to the flagship TripAdvisor brand, we manage and operate 23 other media brands, connected by the common goal of providing comprehensive travel planning resources across the travel sector, which include; www.airfarewatchdog.com, www.bookingbuddy.com, www.citymaps.com, www.cruisecritic.com, www.familyvacationcritic.com, www.flipkey.com, www.gateguru.com, www.holidaylettings.co.uk, www.holidaywatchdog.com, www.housetrip.com, www.independenttraveler.com, www.jetsetter.com, www.thefork.com (including www.lafourchette.com, www.eltenedor.com, www.iens.nl, www.besttables.com, www.dimmi.com.au, and www.en.couverts.nl), www.niumba.com, www.onetime.com, www.oyster.com, www.seatguru.com, www.smartertravel.com, www.tingo.com, www.travelpod.com, www.tripbod.com, www.vacationhomerentals.com, and www.viator.com. Seasonality Traveler expenditures in the global travel market tend to follow a seasonal pattern. As such, expenditures by travel advertisers to market to potential travelers, and, therefore, our financial performance, tend to be seasonal as well. As a result, our financial results tend to be seasonally highest in the third quarter of a year, as it is a key period for travel research and trip-taking, compared to the first and fourth quarters which represent seasonal low points. Further significant shifts in our business mix or adverse economic conditions could result in future seasonal patterns that are different from historical trends.

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Significant Accounting Policies

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Significant Accounting Policies

NOTE 2: SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation and Consolidation

Accounting Estimates

Reclassifications

Revenue Recognition

Click-based advertising and transaction revenue. Click-based revenue is derived primarily from click-through fees charged to our travel partners for traveler leads sent to the travel partners’ website. We record revenue from click-through fees in the same period as when the traveler makes the click-through to the travel partners’ website. Our instant booking transaction model revenue is comprised of commissions earned on all valid instant booking reservations. In a transaction model, our instant booking commission revenue is recorded at the time a traveler books a hotel transaction on our partner’s site where we, as facilitator for such booking, do not assume associated cancellation risk. Under the other instant booking model, called the consumption model, we assume cancellation risk associated with booking, and we record that revenue in the month in which the traveler’s stay at a hotel occurs. We have no post-booking service obligations for all instant booking transactions, regardless of the model chosen.

Cost of Revenue

Selling and Marketing

Technology and Content

General and Administrative

Cash, Cash Equivalents and Marketable Securities

Cash consists of cash deposits held in global financial institutions.

Other Investments

We record investments using the equity method generally when we have the ability to exercise significant influence over the investee. Equity investments without readily determinable fair values for which we do not have the ability to exercise significant influence are accounted for using the cost method of accounting and classified within long-term investments and other assets. Under the cost method, investments are carried at cost and are adjusted only for other-than-temporary declines in fair value, certain distributions, and additional investments. As of December 31, 2016 and 2015, we had $14 million and $0 million of cost method investments, respectively, recorded in other long-term assets on our consolidated balance sheets.

Fair Value Measurements

Level 1—Valuations are based on quoted prices for identical assets and liabilities in active markets.

Derivative Financial Instruments

We have not entered into any cash flow, fair value or net investment hedges as of December 31, 2016.

Accounts Receivable and Allowance for Doubtful Accounts

The following table presents the changes in our allowance for doubtful accounts for the periods presented:

	December 31,
	2016			2015			2014
	(in millions)
Allowance for doubtful accounts:
Balance, beginning of period	$	6		$	7		$	3
Charges (recoveries) to earnings		4			3			3
Write-offs, net of recoveries and other adjustments		(1	)		(4	)		1
Balance, end of period	$	9		$	6		$	7

Property and Equipment, Including Website and Software Development Costs

Leases

Business Combination

Recoverability of Goodwill and Indefinite-Lived Intangible Assets

Goodwill

In determining the estimated fair values of reporting units in a quantitative goodwill impairment test, we generally use a blend, of the following recognized valuation methods: the income approach (discounted cash flows model) and the market valuation approach, which we believe compensates for the inherent risks of using either model on a stand-alone basis. The discounted cash flows model indicates the fair value of the reporting units based on the present value of the cash flows that we expect the reporting units to generate in the future. Our significant estimates in the discounted cash flows model include: weighted average cost of capital; long-term rate of growth and profitability of the reporting unit; income tax rates and working capital effects. The market valuation approach indicates the fair value of the business based on a comparison to comparable publicly traded firms in similar lines of business and other precedent transactions. Our significant estimates in the market approach model include identifying similar companies with comparable business factors such as size, growth, profitability, risk and return on investment and assessing comparable revenue and/or income multiples in estimating the fair value of the reporting units. Valuations are performed by management or third party valuation specialists under management's supervision, where appropriate. We believe that the estimated fair values assigned to our reporting units in impairment tests are based on reasonable assumptions that marketplace participants would use. However, such assumptions are inherently uncertain and actual results could differ from those estimates. The use of different assumptions, estimates or judgments could trigger the need for an impairment charge, or materially increase or decrease the amount of any such impairment charge.

Indefinite-Lived Intangible Assets

Recoverability of Intangible Assets with Definite Lives and Other Long-Lived Assets

Income Taxes

We record income taxes under the asset and liability method. Deferred tax assets and liabilities reflect our estimation of the future tax consequences of temporary differences between the carrying amounts of assets and liabilities for book and tax purposes. We determine deferred income taxes based on the differences in accounting methods and timing between financial statement and income tax reporting. Accordingly, we determine the deferred tax asset or liability for each temporary difference based on the enacted tax rates expected to be in effect when we realize the underlying items of income and expense. We consider all relevant factors when assessing the likelihood of future realization of our deferred tax assets, including our recent earnings experience by jurisdiction, expectations of future taxable income, and the carryforward periods available to us for tax reporting purposes, as well as assessing available tax planning strategies. We may establish a valuation allowance to reduce deferred tax assets to the amount we believe is more likely than not to be realized. Due to inherent complexities arising from the nature of our businesses, future changes in income tax law, tax sharing agreements or variances between our actual and anticipated operating results, we make certain judgments and estimates. Therefore, actual income taxes could materially vary from these estimates.

Foreign Currency Translation and Transaction Gains and Losses

Advertising Expense

We incur advertising expense, which includes traffic generation costs from search engines, affiliate program commissions, display advertising, and other online, and offline (including television) advertising expense, promotions and public relations to promote our business. We expense the costs associated with communicating the advertisements in the period in which the advertisement takes place. We initially capitalize and then expense the production costs associated with television advertisements in the period in which the advertisement first takes place. For the years ended December 31, 2016, 2015 and 2014, we recorded advertising expense of $543 million, $507 million, and $341 million, respectively, in selling and marketing expense on our consolidated statements of operations. As of December 31, 2016 and 2015, we had $5 million and $2 million, respectively, of prepaid marketing expenses included in prepaid expenses and other current assets on our consolidated balance sheets. We expect to fully expense our prepaid marketing asset of $5 million as of December 31, 2016 to the consolidated statement of operations during 2017.

Stock-Based Compensation

Our risk-free interest rate is based on the rates currently available on zero-coupon U.S. Treasury issues, in effect at the time of the grant, whose remaining maturity period most closely approximates the stock option’s expected term assumption. Our expected volatility is calculated by equally weighting the historical volatility and implied volatility on our own common stock. Historical volatility is determined using actual daily price observations of our common stock price over a period equivalent to or approximate to the expected term of our stock option grants to date. Implied volatility represents the volatility calculated from the observed prices of our actively traded options on our common stock, with remaining maturities in excess of six months and market prices approximate to the exercise prices of the stock option grant. We have estimated our expected term using historical exercise behavior and expected post-vest termination data for all 2016 and 2015 stock option grants. We estimated our expected term for all 2014 stock option grants using the simplified method, as we did not have sufficient historical exercise data on our common stock at that date from Spin-Off. Our expected dividend yield is zero, as we have not paid any dividends on our common stock to date and do not expect to pay any cash dividends for the foreseeable.

Treasury Stock

Deferred Merchant Payables

Credit Risk and Concentrations

Contingent Liabilities

Comprehensive Income (Loss)

Comprehensive income (loss) currently consists of net income, cumulative foreign currency translation adjustments, and unrealized gains and losses on available-for-sale securities, net of tax.

Earnings Per Share (“EPS”)

New Accounting Pronouncements Not Yet Adopted

Recently Adopted Accounting Pronouncements

	Three months ended March 31, 2016
	As Reported			As Adjusted ⁽¹⁾⁽²⁾
	(in millions, except per share data)
Consolidated Statement of Operations:

Operating income	$	42		$	42
Provision for income taxes		(11	)		(9	)
Net income		27			29
Basic EPS	$	0.19		$	0.20
Diluted EPS	$	0.18		$	0.20

Consolidated Statement of Cash Flows:
Net cash provided by operating activities	$	120		$	124
Net cash used in financing activities	$	(94	)	$	(98	)

	Three months ended June 30, 2016
	As Reported			As Adjusted ⁽¹⁾
	(in millions, except per share data)
Consolidated Statement of Operations:

Operating income	$	48		$	47
Provision for income taxes		(11	)		(10	)
Net income		34			34
Basic EPS	$	0.23		$	0.23
Diluted EPS	$	0.23		$	0.23

	Six months ended June 30, 2016
	As Reported			As Adjusted ⁽²⁾
	(in millions)
Consolidated Statement of Cash Flows:
Net cash provided by operating activities	$	357		$	363
Net cash used in financing activities	$	(123	)	$	(129	)


(1)	The election to account for forfeitures as they occur did not have a material impact for the three months ended March 31, 2016 and resulted in an increase to stock-based compensation expense of approximately $1 million for the three months ended June 30, 2016.
(2)	Includes the reclassification of cash flows related to excess tax benefits from financing activities to operating activities of $4 million and $2 million for the three months ending March 31, 2016 and June 30, 2016, respectively.

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Acquisitions and Dispositions

12 Months Ended

Dec. 31, 2016

Business Combinations [Abstract]

Acquisitions and Dispositions

NOTE 3: ACQUISITIONS AND DISPOSITIONS

2016 Acquisition of Businesses

During the year ended December 31, 2016, we completed five acquisitions with a total purchase price of $34 million. The Company paid net cash consideration of $28 million, which is net of $4 million of cash acquired, and includes $2 million in future holdback payments, which we currently plan to settle in Company common stock. The cash consideration was paid primarily from our U.S. cash. We acquired 100% of the outstanding capital stock of the following companies: Tous Au Restaurant, a leading restaurant event week brand in France, purchased in January 2016; HouseTrip, a European-based vacation rental website, purchased in April 2016; Citymaps, a social mapping platform, purchased in August 2016; Sneat, a provider of a mobile reservation platform for restaurants in France, purchased in October 2016; and Couverts, a provider of an online and mobile reservations platform for restaurants in the Netherlands, purchased in October 2016.

The aggregate purchase price consideration of $34 million was allocated to the fair value of assets acquired and liabilities assumed as follows, in millions:

	Total
Goodwill (1)	$	17
Intangible assets (2)		25
Net tangible assets (liabilities) (3)		(8	)
Total purchase price consideration (4)	$	34

(1)	Goodwill is not deductible for tax purposes.
(2)	Identifiable definite-lived intangible assets acquired during 2016 were comprised of trade names of $4 million with a weighted average life of 10 years, customer lists and supplier relationships of $4 million with a weighted average life of 6 years, subscriber relationships of $5 million with a weighted average life of approximately 7 years, and technology and other of $12 million with a weighted average life of approximately 5 years. The overall weighted-average life of the identifiable definite-lived intangible assets acquired in the purchase of these businesses during 2016 was 6 years, and will be amortized on a straight-line basis over their estimated useful lives from acquisition date.
(3)	Primarily includes cash acquired of $4 million, accounts receivable of $2 million, and liabilities assumed, including accrued expenses and deferred merchant payables of $3 million and $10 million, respectively, which reflect their respective fair values at acquisition.
(4)	Subject to adjustment based on (i) final working capital adjustment calculations to be determined for Sneat and Couverts, and (ii) indemnification obligations for general representations and warranties of the acquired company stockholders.

2016 Other Investments

2015 Acquisition of Businesses

The aggregate purchase price consideration of $28 million was allocated to the fair value of assets acquired and liabilities assumed as follows, in millions:

	Total
Goodwill (1)	$	17
Intangible assets (2)		12
Net tangible assets (liabilities)		1
Deferred tax liabilities, net		(2	)
Total purchase price consideration (3)	$	28


(1)	Goodwill is not deductible for tax purposes.
(2)	Identifiable definite-lived intangible assets acquired during 2015 were comprised of trade names of $2 million with a weighted average life of approximately 10 years, customer lists and supplier relationships of $7 million with a weighted average life of approximately 6 years and technology and other of $3 million with a weighted average life of approximately 2 years. The overall weighted-average life of the identifiable definite-lived intangible assets acquired in the purchase of these businesses during 2015 was 6 years, and will be amortized on a straight-line basis over their estimated useful lives from acquisition date.
(3)	Subject to adjustment based on indemnification obligations for general representations and warranties of certain acquired company stockholders.

2015 Sale of Business

2014 Acquisition of Businesses

The aggregate purchase price consideration of $400 million was allocated to the fair value of assets acquired and liabilities assumed as follows, in millions:

	Total
Goodwill (1)	$	253
Intangible assets (2)		194
Net tangible assets (liabilities) (3)		(7	)
Deferred tax liabilities, net		(40	)
Total purchase price consideration	$	400

(1)	Goodwill in the amount of $5 million is expected to be deductible for tax purposes.

(2)

(3)

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Stock Based Awards and Other Equity Instruments

12 Months Ended

Dec. 31, 2016

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock Based Awards and Other Equity Instruments

NOTE 4: STOCK BASED AWARDS AND OTHER EQUITY INSTRUMENTS

Stock-based Compensation Expense

	Year ended December 31,
	2016			2015			2014
	(in millions)
Selling and marketing	$	20		$	16		$	13
Technology and content		40			28			27
General and administrative		25			28			23
Total stock-based compensation expense		85			72			63
Income tax benefit from stock-based compensation expense		(31	)		(26	)		(24	)
Total stock-based compensation expense, net of tax effect	$	54		$	46		$	39

Stock and Incentive Plans

Stock Based Award Activity and Valuation

2016 Stock Option Activity

A summary of our stock option activity is presented below:

				Weighted		Weighted
				Average		Average
				Exercise		Remaining		Aggregate
	Options			Price Per		Contractual		Intrinsic
	Outstanding			Share		Life		Value
	(in thousands)					(in years)		(in millions)
Options outstanding at December 31, 2015		5,720		$	53.71
Granted		1,064			63.43
Exercised (1)		(733	)		31.58
Cancelled or expired		(233	)		70.76
Options outstanding as of December 31, 2016		5,818		$	57.60		5.5	$	25
Exercisable as of December 31, 2016		2,796		$	42.95		4.3	$	24

(1)

Aggregate intrinsic value represents the difference between the closing stock price of our common stock and the exercise price of outstanding, in-the-money options. Our closing stock price as reported on NASDAQ as of December 31, 2016 was $46.37. The total intrinsic value of stock options exercised for the years ended December 31, 2016, 2015 and 2014 were $24 million, $149 million, and $75 million, respectively.

	December 31,
	2016			2015			2014
Risk free interest rate		1.20	%		1.58	%		1.79	%
Expected term (in years)		4.85			5.42			5.80
Expected volatility		41.81	%		41.79	%		44.04	%
Expected dividend yield	— %			— %			— %

2016 RSU Activity

The following table presents a summary of our RSU activity:

				Weighted
				Average
				Grant-		Aggregate
	RSUs			Date Fair		Intrinsic
	Outstanding			Value Per Share		Value
	(in thousands)					(in millions)
Unvested RSUs outstanding as of December 31, 2015		1,750		$	79.02
Granted		2,016			63.71
Vested and released (1)		(627	)		76.02
Cancelled		(283	)		73.06
Unvested RSUs outstanding as of December 31, 2016		2,856		$	69.35	$	132

(1)

Unrecognized Stock-Based Compensation

	Stock
	Options		RSUs
Unrecognized compensation expense	$	48	$	149
Weighted average period remaining (in years)		2.3		2.8

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

Investments All Other Investments [Abstract]

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Earnings Per Share

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Earnings Per Share

NOTE 5: EARNINGS PER SHARE

Basic Earnings Per Share Attributable to Common Stockholders

Diluted Earnings Per Share Attributable to Common Stockholders

	Year ended December 31,
	2016		2015		2014
Numerator:
Net income	$	120	$	198	$	226
Denominator:
Weighted average shares used to compute Basic EPS		145,443		143,836		142,721
Weighted average effect of dilutive securities:
Stock options		1,129		1,839		2,734
RSUs and other dilutive securities		321		292		345
Weighted average shares used to compute Diluted EPS		146,893		145,967		145,800
Basic EPS	$	0.83	$	1.38	$	1.58
Diluted EPS	$	0.82	$	1.36	$	1.55

	Year ended December 31,
	2016(1)		2015(2)		2014(3)
Stock options		3,019		2,142		1,450
RSUs		860		562		191
Total		3,879		2,704		1,641

(1)

(2)

(3)

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Financial Instruments

12 Months Ended

Dec. 31, 2016

Financial Instruments

NOTE 6: FINANCIAL INSTRUMENTS

Cash, Cash Equivalents and Marketable Securities

	December 31, 2016
									Cash and		Short-Term		Long-Term
	Amortized		Unrealized		Unrealized		Fair		Cash		Marketable		Marketable
	Cost		Gains		Losses		Value		Equivalents		Securities		Securities
Cash	$	595	$	—	$	—	$	595	$	595	$	—	$	—
Level 1:
Money market funds		17		—		—		17		17		—		—
Level 2:
U.S. agency securities		23		—		—		23		—		21		2
U.S. treasury securities		8		—		—		8		—		8		—
Certificates of deposit		16		—		—		16		—		15		1
Commercial paper		5		—		—		5		—		5		—
Corporate debt securities		82		—		—		82		—		69		13
Subtotal		134		—		—		134		—		118		16
Total	$	746	$	—	$	—	$	746	$	612	$	118	$	16

	December 31, 2015
									Cash and		Short-Term		Long-Term
	Amortized		Unrealized		Unrealized		Fair		Cash		Marketable		Marketable
	Cost		Gains		Losses		Value		Equivalents		Securities		Securities
Cash	$	598	$	—	$	—	$	598	$	598	$	—	$	—
Level 1:
Money market funds		11		—		—		11		11		—		—
Level 2:
U.S. agency securities		13		—		—		13		—		9		4
U.S. treasury securities		16		—		—		16		4		12		—
Certificates of deposit		5		—		—		5		—		4		1
Commercial paper		1		—		—		1		—		1		—
Corporate debt securities		54		—		—		54		1		21		32
Subtotal		89		—		—		89		5		47		37
Total	$	698	$	—	$	—	$	698	$	614	$	47	$	37

Derivative Financial Instruments

The following table shows the notional principal amounts of our outstanding derivative instruments that are not designated as hedging instruments for the periods presented:

	December 31, 2016		December 31, 2015
	(in millions)
Foreign currency exchange-forward contracts (1)(2)	$	6	$	25

(1)	Derivative contracts address foreign currency exchange fluctuations for the Euro versus the U.S. dollar. The Company was entered into two outstanding derivative contracts as of December 31, 2016.

(2)

Other Financial Instruments

We did not have any Level 3 assets or liabilities at December 31, 2016 or 2015.

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Property and Equipment, Net

12 Months Ended

Dec. 31, 2016

Property Plant And Equipment [Abstract]

Property and Equipment, Net

NOTE 7: PROPERTY AND EQUIPMENT, NET

Property and equipment consists of the following for the periods presented:

	December 31, 2016			December 31, 2015
	(in millions)
Capitalized software and website development	$	153		$	127
Building (1)		123			123
Leasehold improvements		39			32
Computer equipment and purchased software		37			36
Furniture, office equipment and other		19			17
		371			335
Less: accumulated depreciation		(111	)		(88	)
Total	$	260		$	247

(1)

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Goodwill and Intangible Assets, Net

12 Months Ended

Dec. 31, 2016

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets, Net

NOTE 8: GOODWILL AND INTANGIBLE ASSETS, NET

The following table summarizes our goodwill activity by segment for the periods presented:

	Hotel			Non-Hotel			Consolidated
	(in millions)
Balance as of December 31, 2014	$	442		$	292		$	734
Acquisitions (1)		1			16			17
Disposition		(1	)		—			(1	)
Other adjustments (2)		—			(18	)		(18	)
Balance as of December 31, 2015	$	442		$	290		$	732
Acquisitions (1)		10			7			17
Other adjustments (2)		(1	)		(12	)		(13	)
Ending balance as of December 31, 2016	$	451		$	285		$	736

(1)	The additions to goodwill relate to our business acquisitions. See “Note 3— Acquisitions and Dispositions,” for further information.

(2)	Primarily related to impact of changes in foreign currency exchange rates to goodwill.

Intangible assets, which were acquired in business combinations and recorded at fair value on the date of purchase, consist of the following for the periods presented:

	December 31,
		2016			2015
	(in millions)
Intangible assets with definite lives	$	217		$	198
Less: accumulated amortization		(80	)		(52	)
Intangible assets with definite lives, net		137			146
Intangible assets with indefinite lives		30			30
Total	$	167		$	176

The following table presents the components of our intangible assets with definite lives for the periods presented:

			December 31, 2016							December 31, 2015
	Weighted Average		Gross					Net		Gross					Net
	Remaining Life		Carrying		Accumulated			Carrying		Carrying		Accumulated			Carrying
	(in years)		Amount		Amortization			Amount		Amount		Amortization			Amount
			(in millions)							(in millions)
Trade names and trademarks		7.8	$	56	$	(14	)	$	42	$	53	$	(9	)	$	44
Customer lists and supplier relationships		4.6		84		(31	)		53		82		(20	)		62
Subscriber relationships		4.8		33		(15	)		18		29		(9	)		20
Technology and other		3.4		44		(20	)		24		34		(14	)		20
Total		5.4	$	217	$	(80	)	$	137	$	198	$	(52	)	$	146

Refer to “Note 3— Acquisitions and Dispositions” above for a discussion of definite lived intangible assets acquired in business combinations during the years ended December 31, 2016 and 2015.

2017	$	31
2018		28
2019		26
2020		21
2021		14
2022 and thereafter		17
Total	$	137

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

Accrued Expenses and Other Current Liabilities

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Debt

12 Months Ended

Dec. 31, 2016

Debt Disclosure [Abstract]

Debt

NOTE 9: DEBT

The Company’s outstanding debt consisted of the following for the periods presented:

	December 31,		December 31,
	2016		2015
	(in millions)
Short-Term Debt:
Chinese Credit Facilities	$	7	$	1
2016 Credit Facility		73		—
Total Short-Term Debt (1)	$	80	$	1

Long-Term Debt:
2015 Credit Facility	$	91	$	200
Total Long-Term Debt	$	91	$	200

(1)

The weighted-average interest rate on short-term debt was 2.1% as of December 31, 2016.

2011 Credit Facility

On December 20, 2011, we entered into a credit agreement (the “2011 Credit Facility”) with a group of lenders, which provided $600 million of borrowing including:


—	a term loan facility in an aggregate principal amount of $400 million with a term of five years due December 2016 (“Term Loan”); and
—	a revolving credit facility in an aggregate principal amount of $200 million available in U.S. dollars, Euros and British pound sterling with a term of five years expiring December 2016.

2015 Credit Facility

There is no specific repayment date prior to the five-year maturity date for borrowings under this revolving credit facility. During the year ended December 31, 2016, the Company borrowed an additional $101 million and repaid $210 million of our outstanding borrowings on the 2015 Credit Facility. Based on the Company’s current leverage ratio, our borrowings bear interest at LIBOR plus 125 basis points, or the Eurocurrency Spread. The Company is currently borrowing under a one-month interest period of 2.0% per annum, using a one-month interest period Eurocurrency Spread, which will reset periodically. Interest will be payable on a monthly basis while the Company is borrowing under the one-month interest rate period. We are also required to pay a quarterly commitment fee, on the daily unused portion of the revolving credit facility for each fiscal quarter and fees in connection with the issuance of letters of credit. Unused revolver capacity is currently subject to a commitment fee of 20.0 basis points, given the Company’s current leverage ratio. The 2015 Credit Facility includes $15 million of borrowing capacity available for letters of credit and $40 million for borrowings on same-day notice. As of December 31, 2016, we had issued $3 million of outstanding letters of credit under the 2015 Credit Facility.

2016 Credit Facility

We borrowed $73 million from this uncommitted credit facility in September 2016. These funds were used for general working capital needs of the Company, primarily for partial repayment of our long term debt, and the liability is recorded in short-term liabilities on our consolidated balance sheet as of December 31, 2016. The Company is currently borrowing under a one-month interest period of 1.9% per annum, which will reset periodically. Interest will be payable on a monthly basis while the Company is borrowing under the one-month interest rate period. During the year ended December 31, 2016, total interest recorded with respect to our 2016 Credit Facility to interest expense on our consolidated statement of operations was not material.

Chinese Credit Facilities

We are parties to a $30 million, one-year revolving credit facility with Bank of America (the “Chinese Credit Facility—BOA”) that is currently subject to review on a periodic basis with no specific expiration period. Our Chinese Credit Facility—BOA currently bears interest at a 100% of the People’s Bank of China’s base rate which was 4.35% as of December 31, 2016. As of December 31, 2016, there are no outstanding borrowings under our Chinese Credit Facility—BOA.

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Income Taxes

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Income Taxes

NOTE 10: INCOME TAXES

The following table presents a summary of our domestic and foreign income before income taxes:

	Year Ended December 31,
	2016		2015		2014
	(in millions)
Domestic	$	64	$	67	$	146
Foreign		87		172		176
Total	$	151	$	239	$	322

The following table presents a summary of the components of our provision for income taxes:

	Year Ended December 31,
	2016			2015			2014
	(in millions)
Current income tax expense:
Federal	$	38		$	48		$	93
State		2			8			14
Foreign		11			22			6
Current income tax expense		51			78			113
Deferred income tax (benefit) expense:
Federal		(12	)		(29	)		(12	)
State		(3	)		(2	)		(1	)
Foreign		(5	)		(6	)		(4	)
Deferred income tax (benefit) expense:		(20	)		(37	)		(17	)
Provision for income taxes	$	31		$	41		$	96

The significant components of our deferred tax assets and deferred tax liabilities as of December 31, 2016 and 2015 are as follows:

	December 31,
	2016			2015
	(in millions)
Deferred tax assets:
Stock-based compensation	$	52		$	40
Net operating loss carryforwards		46			31
Provision for accrued expenses		12			12
Deferred rent		5			5
Lease financing obligation		33			33
Foreign advertising spend		10			8
Deferred expense related to cost-sharing arrangement		30			20
Charitable contribution carryforward		20			24
Other		7			4
Total deferred tax assets	$	215		$	177
Less: valuation allowance		(27	)		(17	)
Net deferred tax assets	$	188		$	160
Deferred tax liabilities:
Intangible assets	$	(83	)	$	(81	)
Property and equipment		(28	)		(27	)
Prepaid expenses		(6	)		(4	)
Building – corporate headquarters		(31	)		(31	)
Deferred income related to cost-sharing arrangement		(10	)		(7	)
Total deferred tax liabilities	$	(158	)	$	(150	)
Net deferred tax asset (liability)	$	30		$	10

A reconciliation of the provision for income taxes to the amounts computed by applying the statutory federal income tax rate to income before income taxes is as follows:

	Year Ended December 31,
	2016			2015			2014
	(in millions)
Income tax expense at the federal statutory rate of 35%	$	53		$	84		$	113
Foreign rate differential		(35	)		(53	)		(49	)
State income taxes, net of effect of federal tax benefit		4			4			13
Unrecognized tax benefits and related interest		11			12			14
Change in cost-sharing treatment of stock-based compensation		(6	)		(13	)		—
Non-deductible transaction costs		—			1			1
Research tax credit		(10	)		(3	)		(2	)
Stock-based compensation		2			2			2
Change in valuation allowance		9			5			5
Other, net		3			2			(1	)
Provision for income taxes	$	31		$	41		$	96

A reconciliation of the beginning and ending amount of gross unrecognized tax benefits (excluding interest and penalties) is as follows:

	December 31,
	2016			2015		2014
	(in millions)
Balance, beginning of year	$	89		$	67	$	36
Increases to tax positions related to the current year		16			15		13
Increases to tax positions related to the prior year		1			7		18
Reductions due to lapsed statute of limitations		(1	)		—		—
Decreases to tax positions related to the prior year		—			—		—
Settlements during current year		—			—		—
Balance, end of year	$	105		$	89	$	67

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Accrued Expenses and Other Current Liabilities

12 Months Ended

Dec. 31, 2016

Payables And Accruals [Abstract]

NOTE 11: ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES

Accrued expenses and other current liabilities consisted of the following for the periods presented:

	December 31, 2016		December 31, 2015
	(in millions)
Accrued employee salary, bonus, and related benefits	$	53	$	47
Accrued marketing costs		37		43
Other		37		33
Total	$	127	$	123

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Other Long-Term Liabilities

12 Months Ended

Dec. 31, 2016

Other Liabilities Noncurrent [Abstract]

Other Long-Term Liabilities

NOTE 12: OTHER LONG-TERM LIABILITIES

Other long-term liabilities consisted of the following for the periods presented:

	December 31, 2016		December 31, 2015
	(in millions)
Unrecognized tax benefits (1)	$	108	$	87
Financing obligation, net of current portion (2)		84		84
Other (3)		18		18
Total	$	210	$	189

(1)	See “Note 10—Income Taxes” for additional information on our unrecognized tax benefits. Amount includes accrued interest related to this liability.

(2)	Refer to “Note 13 – Commitments and Contingencies,” for additional information on our corporate headquarters lease.

(3)	Amounts primarily consist of long term deferred rent balances related to operating leases for office space.

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Commitments and Contingencies

12 Months Ended

Dec. 31, 2016

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

NOTE 13: COMMITMENTS AND CONTINGENCIES

The following table summarizes our material commitments and obligations as of December 31, 2016:

			By Period
	Total		Less than 1 year		1 to 3 years		3 to 5 years		More than 5 years
	(in millions)
Property leases, net of sublease income (1)	$	248	$	25	$	51	$	52	$	120
Expected interest payments on 2015 Credit Facility (2)		7		2		4		1		—
Expected commitment fee payments on 2015 Credit Facility (3)		7		2		4		1		—
Total (4)	$	262	$	29	$	59	$	54	$	120

(1)	Estimated future minimum rental payments under operating leases with non-cancelable lease terms, including our corporate headquarters lease in Needham, MA.

(2)

(3)	The amounts included as expected commitment fee payments in this table are based on the unused portion of credit facility, issued letters of credit, and current effective commitment fee rate as of December 31, 2016; however, these variables could change significantly in the future.

(4)

Office Lease Commitments

Corporate Headquarters Lease

Additional United States and International Locations

Year	Corporate Headquarters Lease (1)		Other Operating Leases		Sublease Income			Total Lease Commitments (Net of Sublease Income)
	(in millions)
2017	$	9	$	17	$	(1	)	$	25
2018		9		17		(1	)		25
2019		9		18		(1	)		26
2020		9		17		—			26
2021		10		16		—			26
Thereafter		87		33		—			120
Total minimum lease payments	$	133	$	118	$	(3	)	$	248

(1)	Amount includes an $84 million financing obligation, which we have recorded in other long-term liabilities on our consolidated balance sheet at December 31, 2016, related to our corporate headquarters lease.

Letters of Credit

Legal Proceedings

Income Taxes

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Employee Benefit Plans	12 Months Ended
Employee Benefit Plans	Dec. 31, 2016
Compensation And Retirement Disclosure [Abstract]
Employee Benefit Plans	NOTE 14: EMPLOYEE BENEFIT PLANS Retirement Savings Plan The TripAdvisor Retirement Savings Plan (the “401(k) Plan”), qualifies under Section 401(k) of the Internal Revenue Code. The 401(k) Plan allows participating employees, most of our U.S. employees, to make contributions of a specified percentage of their eligible compensation. Participating employees may contribute up to 50% of their eligible salary on a pre-tax basis, but not more than statutory limits. Employee-participants age 50 and over may also contribute an additional amount of their salary on a pre-tax tax basis up to the IRS Catch-Up Provision Limit, or catch-up contributions. Employees may also contribute into the 401(k) Plan on an after-tax basis up to an annual maximum of 10%. The 401(k) Plan has an automatic enrollment feature at 6% pre-tax. We match 50% of the first 6% of employee contributions to the plan for a maximum employer contribution of 3% of a participant’s eligible earnings. The “catch up contributions”, are not eligible for employer matching contributions. The matching contributions portion of an employee’s account, vests after two years of service. The Plan also permits certain after-tax Roth 401(k) contributions. Additionally, at the end of the 401(k) Plan year, we make a discretionary matching contribution to eligible participants. This additional discretionary matching employer contribution referred to as “true up” is limited to match only contributions up to 3% of eligible compensation. We also have various defined contribution plans for our international employees. Our contribution to the 401(k) Plan and our international defined contribution plans was $9 million, $7 million, and $5 million for the years ended December 31, 2016, 2015 and 2014, respectively, and recorded to our consolidated statements of operations, respectively, for those years. TripAdvisor, Inc. Deferred Compensation Plan for Non-Employee Directors The Company also has a Deferred Compensation Plan for Non-Employee Directors (the “Plan”). Under the Plan, eligible directors who defer their directors’ fees may elect to have such deferred fees (i) applied to the purchase of share units, representing the number of shares of our common stock that could have been purchased on the date such fees would otherwise be payable, or (ii) credited to a cash fund. The cash fund will be credited with interest at an annual rate equal to the weighted average prime or base lending rate of a financial institution selected in accordance with the terms of the Plan and applicable law. Upon termination of service as a director of TripAdvisor, a director will receive (i) with respect to share units, such number of shares of our common stock as the share units represent, and (ii) with respect to the cash fund, a cash payment. Payments upon termination will be made in either one lump sum or up to five annual installments, as elected by the eligible director at the time of the deferral election. Under the 2011 Incentive Plan, 100,000 shares of TripAdvisor common stock are available for issuance to non-employee directors. From the inception of the Plan through December 31, 2016, a total of 1,662 shares have been reserved for such purpose.

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Stockholders' Equity

12 Months Ended

Dec. 31, 2016

Equity [Abstract]

Stockholders' Equity

NOTE 15: STOCKHOLDERS’ EQUITY

Preferred Stock

Common Stock and Class B Common Stock

Accumulated Other Comprehensive Income (Loss)

Accumulated other comprehensive loss is primarily comprised of accumulated foreign currency translation adjustments, as follows for the periods presented:

	December 31, 2016			December 31, 2015
	(in millions)
Cumulative foreign currency translation adjustments (1)	$	(77	)	$	(63	)
Total accumulated other comprehensive loss (2)	$	(77	)	$	(63	)

(1)

We consider our foreign subsidiary earnings indefinitely reinvested; therefore; deferred taxes are not provided on foreign currency translation adjustments.

(2)

Our accumulated net unrealized gain (loss) on available for sale securities was not material as of December 31, 2016 and December 31, 2015.

Treasury Stock

We have 3,395,487 treasury shares remaining as of December 31, 2016 with an aggregate cost of $197 million.

Dividends

Segment and Geographic Information

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section S99
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Related Party Transactions	12 Months Ended
Related Party Transactions	Dec. 31, 2016
Related Party Transactions [Abstract]
Related Party Transactions	NOTE 16: RELATED PARTY TRANSACTIONS Relationship between Expedia and TripAdvisor Upon consummation of the Spin-Off, Expedia was considered a related party under GAAP based on a number of factors, including, among others, common ownership of our shares and those of Expedia. However, we no longer consider Expedia a related party. For purposes of governing certain of the ongoing relationships between us and Expedia at and after the Spin-Off, and to provide for an orderly transition, we and Expedia entered into various agreements at the time of the Spin-Off, which TripAdvisor has satisfied its obligations. However, TripAdvisor continues to be subject to certain post-spin obligations under the Tax Sharing Agreement. Under the Tax Sharing Agreement between us and Expedia, we are generally required to indemnify Expedia for any taxes resulting from the Spin-Off (and any related interest, penalties, legal and professional fees, and all costs and damages associated with related stockholder litigation or controversies) to the extent such amounts resulted from (i) any act or failure to act by us described in the covenants in the tax sharing agreement, (ii) any acquisition of our equity securities or assets or those of a member of our group, or (iii) any failure of the representations with respect to us or any member of our group to be true or any breach by us or any member of our group of any covenant, in each case, which is contained in the separation documents or in the documents relating to the IRS private letter ruling and/or the opinion of counsel. The full text of the Tax Sharing Agreement is incorporated by reference in this Annual Report on Form 10-K as Exhibit 10.2. Refer to “Note 10— Income Taxes” above for information regarding the status of completed and ongoing IRS audits of our consolidated income tax returns with Expedia to date. Relationship between Liberty TripAdvisor Holdings, Inc. and TripAdvisor We consider Liberty TripAdvisor Holdings, Inc. (“LTRIP”) a related party. As of December 31, 2016, LTRIP beneficially owned 18,159,752 shares of our common stock and 12,799,999 shares of our Class B common stock, which shares constituted 13.8% of the outstanding shares of Common Stock and 100% of the outstanding shares of Class B Common Stock. Assuming the conversion of all of LTRIP’s shares of Class B common stock into common stock, LTRIP would beneficially own 21.5% of the outstanding common stock. Because each share of Class B common stock is generally entitled to ten votes per share and each share of common stock is entitled to one vote per share, LTRIP may be deemed to beneficially own equity securities representing 56.4% of our voting power. Refer to “Note 1— Organization and Business Description” above, which describes the evolution of our relationship with LTRIP. We had no related party transactions with LTRIP during the years ended December 31, 2016, 2015 or 2014.

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Segment and Geographic Information

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

NOTE 17: SEGMENT AND GEOGRAPHIC INFORMATION

Segment Information

Hotel

Our Hotel segment includes revenue generated from the following sources:

•

Non-Hotel

Our Non-Hotel segment consists of the aggregation of three operating segments, our Attractions, Restaurants and Vacation Rentals businesses.

Attractions. We provide information and services for users to research and book activities and attractions in popular travel destinations through our dedicated attractions business, Viator. We generate revenue by charging the operators a commission for each transaction we facilitate through our online reservation systems. In addition to its consumer-direct business, Viator also powers activity and attractions booking capabilities to its affiliate partners, including some of the world’s top airlines, hotel chains and online and offline travel agencies. Viator’s bookable inventory is available on www.viator.com as well as TripAdvisor-branded websites and mobile applications.

	Year ended December 31, 2016
	Hotel		Non-Hotel			Corporate and unallocated			Total
	(in millions)
Revenue	$	1,190	$	290		$	—		$	1,480
Adjusted EBITDA (1)		380		(28	)		—			352
Depreciation							(69	)		(69	)
Amortization of intangible assets							(32	)		(32	)
Stock-based compensation							(85	)		(85	)
Operating income										166
Other expense, net										(15	)
Income before income taxes										151
Provision for income taxes										(31	)
Net income									$	120

	Year ended December 31, 2015
	Hotel		Non-Hotel			Corporate and unallocated			Total
	(in millions)
Revenue	$	1,263	$	229		$	—		$	1,492
Adjusted EBITDA (1)		472		(6	)		—			466
Depreciation							(57	)		(57	)
Amortization of intangible assets							(36	)		(36	)
Stock-based compensation							(72	)		(72	)
Non-cash charitable contribution (2)							(67	)		(67	)
Other non-recurring expenses							(2	)		(2	)
Operating income										232
Other income, net										7
Income before income taxes										239
Provision for income taxes										(41	)
Net income									$	198

	Year ended December 31, 2014
	Hotel		Non-Hotel			Corporate and unallocated			Total
	(in millions)
Revenue	$	1,135	$	111		$	—		$	1,246
Adjusted EBITDA (1)(3)		472		(4	)		—			468
Depreciation							(47	)		(47	)
Amortization of intangible assets							(18	)		(18	)
Stock-based compensation							(63	)		(63	)
Operating income										340
Other expense, net										(18	)
Income before income taxes										322
Provision for income taxes										(96	)
Net income									$	226

(1)	Includes allocated general and administrative expenses in our Hotel segment of $80 million, $85 million and $87 million; and in our Non-Hotel segment of $38 million, $28 million and $18 million for the years ended December 31, 2016, 2015 and 2014, respectively.

(2)

(3)	Hotel segment Adjusted EBITDA includes charitable contributions to the Foundation which were funded in cash of $8 million for the year ended December 31, 2014.

Revenue and Geographic Information

In the first quarter of 2016 we began providing additional disclosure on our revenue sources within our Hotel segment, which are TripAdvisor-branded click-based and transaction revenue, TripAdvisor-branded display-based advertising and subscription revenue; and other hotel revenue, which along with our Non-Hotel revenue source comprise our products. In conjunction with providing these additional revenue disclosures, we will no longer provide our historically reported revenue disclosure of click-based advertising, display-based advertising, and subscription, transaction and other revenues. This change had no effect on our consolidated financial statements in any period or with the composition of our operating or reportable segments.

The following table presents revenue by source for the periods presented:

	Year ended December 31,
	2016		2015		2014
	(in millions)
TripAdvisor-branded click-based and transaction	$	750	$	837	$	764
TripAdvisor-branded display-based advertising and subscription		282		272		233
Other hotel revenue		158		154		138
Non-hotel revenue		290		229		111
Total revenue	$	1,480	$	1,492	$	1,246

The following table presents revenue by geographic area, the United States, the United Kingdom and all other countries, based on the geographic location of our websites for the periods presented:

	Year ended December 31,
	2016		2015		2014
	(in millions)
Revenue
United States	$	799	$	739	$	593
United Kingdom		210		215		191
All other countries		471		538		462
Total revenue	$	1,480	$	1,492	$	1,246

The following table presents property and equipment, net for the United States and all other countries based on the geographic location of the assets for the periods presented:

	December 31,
	2016		2015
	(in millions)
Property and equipment, net
United States	$	222	$	217
All other countries		38		30
Total	$	260	$	247

Other Income And Expenses [Abstract]

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

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Interest Income and Other, Net

12 Months Ended

Dec. 31, 2016

Interest Income and Other, Net

NOTE 18: INTEREST INCOME AND OTHER, NET

The following table presents the detail of interest income and other, net, for the periods presented:

	Year Ended December 31,
	2016			2015			2014
	(in millions)
Net loss, realized and unrealized, on foreign currency exchange and foreign currency derivative contracts and other, net	$	(4	)	$	(4	)	$	(10	)
Interest income		1			1			1
Gain on sale of business (1)		—			20			—
Total	$	(3	)	$	17		$	(9	)


(1)	See “Note 3 – Acquisitions and Dispositions” for information regarding our gain on sale of business in 2015.

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Quarterly Financial Information

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Information

NOTE 19: QUARTERLY FINANCIAL INFORMATION (UNAUDITED)

	Three Months Ended
	March 31 (3)		June 30 (3)		September 30		December 31
	(in millions, except per share data)
Year ended December 31, 2016
Revenue	$	352	$	391	$	421	$	316
Operating income		42		47		66		10
Net income		29		34		55		1
Basic earnings per share (1)	$	0.20	$	0.23	$	0.38	$	0.01
Diluted earnings per share (1)	$	0.20	$	0.23	$	0.37	$	0.01
Year ended December 31, 2015
Revenue	$	363	$	405	$	415	$	309
Operating income (loss) (2)		90		79		88		(25	)
Net income		63		58		74		3
Basic earnings per share (1)	$	0.44	$	0.40	$	0.51	$	0.02
Diluted earnings per share (1)	$	0.43	$	0.40	$	0.51	$	0.02


(1)	Earnings per share is computed independently for each of the quarters presented. Therefore, the sum of the quarterly earnings per share may not equal the total computed for the year.
(2)	During the fourth quarter of 2015, we recognized an incremental $59 million charge over the third quarter of 2015, related to a non-cash charitable contribution recorded to general and administrative expense on our consolidated statement of operations. Refer to “Note 17 – Segments and Geographic Information” for a discussion of this charitable contribution.
(3)	In the third quarter of 2016, the Company early adopted ASU 2016-09, Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. Refer to “Note 2 – Significant Accounting Policies” for the impact of the adoption of this guidance on the first and second quarters of 2016.

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Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	NOTE 20: SUBSEQUENT EVENTS On January 25, 2017, our Board of Directors authorized the repurchase of $250 million of our shares of common stock under a new share repurchase program. The repurchase program has no expiration but may be suspended or terminated by the Board of Directors at any time. The Executive Committee of our Board of Directors will determine the price, timing, amount and method of such repurchases based on its evaluation of market conditions and other factors, and any shares repurchased will be in compliance with applicable legal requirements, at prices determined to be attractive and in the best interests of both the Company and its stockholders. In January 2017, as part of the Company’s IRS audit with Expedia, we received Notices of Proposed Adjustment from the IRS for the 2009 and 2010 tax years. Refer to “Note 10 – Income Taxes” for a discussion of this matter.

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Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Basis of Presentation and Consolidation

Accounting Estimates

Reclassifications

Revenue Recognition

Click-based advertising and transaction revenue. Click-based revenue is derived primarily from click-through fees charged to our travel partners for traveler leads sent to the travel partners’ website. We record revenue from click-through fees in the same period as when the traveler makes the click-through to the travel partners’ website. Our instant booking transaction model revenue is comprised of commissions earned on all valid instant booking reservations. In a transaction model, our instant booking commission revenue is recorded at the time a traveler books a hotel transaction on our partner’s site where we, as facilitator for such booking, do not assume associated cancellation risk. Under the other instant booking model, called the consumption model, we assume cancellation risk associated with booking, and we record that revenue in the month in which the traveler’s stay at a hotel occurs. We have no post-booking service obligations for all instant booking transactions, regardless of the model chosen.

Cost of Revenue

Selling and Marketing

Technology and Content

General and Administrative

Cash, Cash Equivalents and Marketable Securities

Cash consists of cash deposits held in global financial institutions.

Other Investments

Fair Value Measurements

Level 1—Valuations are based on quoted prices for identical assets and liabilities in active markets.

Derivative Financial Instruments

We have not entered into any cash flow, fair value or net investment hedges as of December 31, 2016.

Accounts Receivable and Allowance for Doubtful Accounts

The following table presents the changes in our allowance for doubtful accounts for the periods presented:

	December 31,
	2016			2015			2014
	(in millions)
Allowance for doubtful accounts:
Balance, beginning of period	$	6		$	7		$	3
Charges (recoveries) to earnings		4			3			3
Write-offs, net of recoveries and other adjustments		(1	)		(4	)		1
Balance, end of period	$	9		$	6		$	7

Property and Equipment, Including Website and Software Development Costs

Leases

Business Combination

Recoverability of Goodwill and Indefinite-Lived Intangible Assets

Goodwill

In determining the estimated fair values of reporting units in a quantitative goodwill impairment test, we generally use a blend, of the following recognized valuation methods: the income approach (discounted cash flows model) and the market valuation approach, which we believe compensates for the inherent risks of using either model on a stand-alone basis. The discounted cash flows model indicates the fair value of the reporting units based on the present value of the cash flows that we expect the reporting units to generate in the future. Our significant estimates in the discounted cash flows model include: weighted average cost of capital; long-term rate of growth and profitability of the reporting unit; income tax rates and working capital effects. The market valuation approach indicates the fair value of the business based on a comparison to comparable publicly traded firms in similar lines of business and other precedent transactions. Our significant estimates in the market approach model include identifying similar companies with comparable business factors such as size, growth, profitability, risk and return on investment and assessing comparable revenue and/or income multiples in estimating the fair value of the reporting units. Valuations are performed by management or third party valuation specialists under management's supervision, where appropriate. We believe that the estimated fair values assigned to our reporting units in impairment tests are based on reasonable assumptions that marketplace participants would use. However, such assumptions are inherently uncertain and actual results could differ from those estimates. The use of different assumptions, estimates or judgments could trigger the need for an impairment charge, or materially increase or decrease the amount of any such impairment charge.

Indefinite-Lived Intangible Assets

Recoverability of Intangible Assets with Definite Lives and Other Long-Lived Assets

Income Taxes

We record income taxes under the asset and liability method. Deferred tax assets and liabilities reflect our estimation of the future tax consequences of temporary differences between the carrying amounts of assets and liabilities for book and tax purposes. We determine deferred income taxes based on the differences in accounting methods and timing between financial statement and income tax reporting. Accordingly, we determine the deferred tax asset or liability for each temporary difference based on the enacted tax rates expected to be in effect when we realize the underlying items of income and expense. We consider all relevant factors when assessing the likelihood of future realization of our deferred tax assets, including our recent earnings experience by jurisdiction, expectations of future taxable income, and the carryforward periods available to us for tax reporting purposes, as well as assessing available tax planning strategies. We may establish a valuation allowance to reduce deferred tax assets to the amount we believe is more likely than not to be realized. Due to inherent complexities arising from the nature of our businesses, future changes in income tax law, tax sharing agreements or variances between our actual and anticipated operating results, we make certain judgments and estimates. Therefore, actual income taxes could materially vary from these estimates.

Foreign Currency Translation and Transaction Gains and Losses

Advertising Expense

Stock-Based Compensation

Our risk-free interest rate is based on the rates currently available on zero-coupon U.S. Treasury issues, in effect at the time of the grant, whose remaining maturity period most closely approximates the stock option’s expected term assumption. Our expected volatility is calculated by equally weighting the historical volatility and implied volatility on our own common stock. Historical volatility is determined using actual daily price observations of our common stock price over a period equivalent to or approximate to the expected term of our stock option grants to date. Implied volatility represents the volatility calculated from the observed prices of our actively traded options on our common stock, with remaining maturities in excess of six months and market prices approximate to the exercise prices of the stock option grant. We have estimated our expected term using historical exercise behavior and expected post-vest termination data for all 2016 and 2015 stock option grants. We estimated our expected term for all 2014 stock option grants using the simplified method, as we did not have sufficient historical exercise data on our common stock at that date from Spin-Off. Our expected dividend yield is zero, as we have not paid any dividends on our common stock to date and do not expect to pay any cash dividends for the foreseeable.

Treasury Stock

Deferred Merchant Payables

Credit Risk and Concentrations

Contingent Liabilities

Comprehensive Income (Loss)

Comprehensive income (loss) currently consists of net income, cumulative foreign currency translation adjustments, and unrealized gains and losses on available-for-sale securities, net of tax.

Earnings Per Share (“EPS”)

New Accounting Pronouncements Not Yet Adopted and Recently Adopted Accounting Pronouncements

New Accounting Pronouncements Not Yet Adopted

Recently Adopted Accounting Pronouncements

	Three months ended March 31, 2016
	As Reported			As Adjusted ⁽¹⁾⁽²⁾
	(in millions, except per share data)
Consolidated Statement of Operations:

Operating income	$	42		$	42
Provision for income taxes		(11	)		(9	)
Net income		27			29
Basic EPS	$	0.19		$	0.20
Diluted EPS	$	0.18		$	0.20

Consolidated Statement of Cash Flows:
Net cash provided by operating activities	$	120		$	124
Net cash used in financing activities	$	(94	)	$	(98	)

	Three months ended June 30, 2016
	As Reported			As Adjusted ⁽¹⁾
	(in millions, except per share data)
Consolidated Statement of Operations:

Operating income	$	48		$	47
Provision for income taxes		(11	)		(10	)
Net income		34			34
Basic EPS	$	0.23		$	0.23
Diluted EPS	$	0.23		$	0.23

	Six months ended June 30, 2016
	As Reported			As Adjusted ⁽²⁾
	(in millions)
Consolidated Statement of Cash Flows:
Net cash provided by operating activities	$	357		$	363
Net cash used in financing activities	$	(123	)	$	(129	)


(1)	The election to account for forfeitures as they occur did not have a material impact for the three months ended March 31, 2016 and resulted in an increase to stock-based compensation expense of approximately $1 million for the three months ended June 30, 2016.
(2)	Includes the reclassification of cash flows related to excess tax benefits from financing activities to operating activities of $4 million and $2 million for the three months ending March 31, 2016 and June 30, 2016, respectively.

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Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Summary of Changes in the Allowance for Doubtful Accounts

The following table presents the changes in our allowance for doubtful accounts for the periods presented:

	December 31,
	2016			2015			2014
	(in millions)
Allowance for doubtful accounts:
Balance, beginning of period	$	6		$	7		$	3
Charges (recoveries) to earnings		4			3			3
Write-offs, net of recoveries and other adjustments		(1	)		(4	)		1
Balance, end of period	$	9		$	6		$	7

Adoption of New Guidance Impact on Previously Reported Quarterly Results

	Three months ended March 31, 2016
	As Reported			As Adjusted ⁽¹⁾⁽²⁾
	(in millions, except per share data)
Consolidated Statement of Operations:

Operating income	$	42		$	42
Provision for income taxes		(11	)		(9	)
Net income		27			29
Basic EPS	$	0.19		$	0.20
Diluted EPS	$	0.18		$	0.20

Consolidated Statement of Cash Flows:
Net cash provided by operating activities	$	120		$	124
Net cash used in financing activities	$	(94	)	$	(98	)

	Three months ended June 30, 2016
	As Reported			As Adjusted ⁽¹⁾
	(in millions, except per share data)
Consolidated Statement of Operations:

Operating income	$	48		$	47
Provision for income taxes		(11	)		(10	)
Net income		34			34
Basic EPS	$	0.23		$	0.23
Diluted EPS	$	0.23		$	0.23

	Six months ended June 30, 2016
	As Reported			As Adjusted ⁽²⁾
	(in millions)
Consolidated Statement of Cash Flows:
Net cash provided by operating activities	$	357		$	363
Net cash used in financing activities	$	(123	)	$	(129	)


(1)	The election to account for forfeitures as they occur did not have a material impact for the three months ended March 31, 2016 and resulted in an increase to stock-based compensation expense of approximately $1 million for the three months ended June 30, 2016.
(2)	Includes the reclassification of cash flows related to excess tax benefits from financing activities to operating activities of $4 million and $2 million for the three months ending March 31, 2016 and June 30, 2016, respectively.

Tabular disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22580-107794

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Direct Effects of a Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=66092750

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Indirect Effects of a Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6515603

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 45
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e765-108305

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Accounting Change
-URI http://asc.fasb.org/extlink&oid=6503790

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22499-107794

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.10-01.(b)(6))
-URI http://asc.fasb.org/extlink&oid=27015980&loc=d3e46468-122699

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22583-107794

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6507316

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e725-108305

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Retrospective Application
-URI http://asc.fasb.org/extlink&oid=6523989

+ Details

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Acquisitions and Dispositions (Tables)

12 Months Ended

Dec. 31, 2016

2016 Acquisitions

Summary of Aggregate Purchase Price Consideration Allocated to Fair Value of Assets Acquired and Liabilities Assumed

The aggregate purchase price consideration of $34 million was allocated to the fair value of assets acquired and liabilities assumed as follows, in millions:

	Total
Goodwill (1)	$	17
Intangible assets (2)		25
Net tangible assets (liabilities) (3)		(8	)
Total purchase price consideration (4)	$	34

(1)	Goodwill is not deductible for tax purposes.
(2)	Identifiable definite-lived intangible assets acquired during 2016 were comprised of trade names of $4 million with a weighted average life of 10 years, customer lists and supplier relationships of $4 million with a weighted average life of 6 years, subscriber relationships of $5 million with a weighted average life of approximately 7 years, and technology and other of $12 million with a weighted average life of approximately 5 years. The overall weighted-average life of the identifiable definite-lived intangible assets acquired in the purchase of these businesses during 2016 was 6 years, and will be amortized on a straight-line basis over their estimated useful lives from acquisition date.
(3)	Primarily includes cash acquired of $4 million, accounts receivable of $2 million, and liabilities assumed, including accrued expenses and deferred merchant payables of $3 million and $10 million, respectively, which reflect their respective fair values at acquisition.
(4)	Subject to adjustment based on (i) final working capital adjustment calculations to be determined for Sneat and Couverts, and (ii) indemnification obligations for general representations and warranties of the acquired company stockholders.

2015 Acquisitions

Summary of Aggregate Purchase Price Consideration Allocated to Fair Value of Assets Acquired and Liabilities Assumed

The aggregate purchase price consideration of $28 million was allocated to the fair value of assets acquired and liabilities assumed as follows, in millions:

	Total
Goodwill (1)	$	17
Intangible assets (2)		12
Net tangible assets (liabilities)		1
Deferred tax liabilities, net		(2	)
Total purchase price consideration (3)	$	28


(1)	Goodwill is not deductible for tax purposes.
(2)	Identifiable definite-lived intangible assets acquired during 2015 were comprised of trade names of $2 million with a weighted average life of approximately 10 years, customer lists and supplier relationships of $7 million with a weighted average life of approximately 6 years and technology and other of $3 million with a weighted average life of approximately 2 years. The overall weighted-average life of the identifiable definite-lived intangible assets acquired in the purchase of these businesses during 2015 was 6 years, and will be amortized on a straight-line basis over their estimated useful lives from acquisition date.
(3)	Subject to adjustment based on indemnification obligations for general representations and warranties of certain acquired company stockholders.

2014 Acquisitions

Summary of Aggregate Purchase Price Consideration Allocated to Fair Value of Assets Acquired and Liabilities Assumed

The aggregate purchase price consideration of $400 million was allocated to the fair value of assets acquired and liabilities assumed as follows, in millions:

	Total
Goodwill (1)	$	253
Intangible assets (2)		194
Net tangible assets (liabilities) (3)		(7	)
Deferred tax liabilities, net		(40	)
Total purchase price consideration	$	400

(1)	Goodwill in the amount of $5 million is expected to be deductible for tax purposes.

(2)

(3)

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Stock Based Awards and Other Equity Instruments (Tables)

12 Months Ended

Dec. 31, 2016

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Amount of Stock-Based Compensation Expense Related to Stock-Based Awards, Primarily Stock Options and RSUs

	Year ended December 31,
	2016			2015			2014
	(in millions)
Selling and marketing	$	20		$	16		$	13
Technology and content		40			28			27
General and administrative		25			28			23
Total stock-based compensation expense		85			72			63
Income tax benefit from stock-based compensation expense		(31	)		(26	)		(24	)
Total stock-based compensation expense, net of tax effect	$	54		$	46		$	39

Summary of Stock Option

A summary of our stock option activity is presented below:

				Weighted		Weighted
				Average		Average
				Exercise		Remaining		Aggregate
	Options			Price Per		Contractual		Intrinsic
	Outstanding			Share		Life		Value
	(in thousands)					(in years)		(in millions)
Options outstanding at December 31, 2015		5,720		$	53.71
Granted		1,064			63.43
Exercised (1)		(733	)		31.58
Cancelled or expired		(233	)		70.76
Options outstanding as of December 31, 2016		5,818		$	57.60		5.5	$	25
Exercisable as of December 31, 2016		2,796		$	42.95		4.3	$	24

(1)

Weighted-Average Assumptions of Estimated Fair Value of Stock Option Grants

	December 31,
	2016			2015			2014
Risk free interest rate		1.20	%		1.58	%		1.79	%
Expected term (in years)		4.85			5.42			5.80
Expected volatility		41.81	%		41.79	%		44.04	%
Expected dividend yield	— %			— %			— %

Summary of RSU Activity

The following table presents a summary of our RSU activity:

				Weighted
				Average
				Grant-		Aggregate
	RSUs			Date Fair		Intrinsic
	Outstanding			Value Per Share		Value
	(in thousands)					(in millions)
Unvested RSUs outstanding as of December 31, 2015		1,750		$	79.02
Granted		2,016			63.71
Vested and released (1)		(627	)		76.02
Cancelled		(283	)		73.06
Unvested RSUs outstanding as of December 31, 2016		2,856		$	69.35	$	132

(1)

Summary of Unrecognized Compensation Expense and Weighted Average Period Remaining

	Stock
	Options		RSUs
Unrecognized compensation expense	$	48	$	149
Weighted average period remaining (in years)		2.3		2.8

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Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Reconciliation of Weighted Average Number of Shares of Common Stock Outstanding

	Year ended December 31,
	2016		2015		2014
Numerator:
Net income	$	120	$	198	$	226
Denominator:
Weighted average shares used to compute Basic EPS		145,443		143,836		142,721
Weighted average effect of dilutive securities:
Stock options		1,129		1,839		2,734
RSUs and other dilutive securities		321		292		345
Weighted average shares used to compute Diluted EPS		146,893		145,967		145,800
Basic EPS	$	0.83	$	1.38	$	1.58
Diluted EPS	$	0.82	$	1.36	$	1.55

Common Shares Related to Stock Options and RSUs Excluded from Calculated Diluted EPS

	Year ended December 31,
	2016(1)		2015(2)		2014(3)
Stock options		3,019		2,142		1,450
RSUs		860		562		191
Total		3,879		2,704		1,641

(1)

(2)

(3)

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Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2016

Investments All Other Investments [Abstract]

Schedule of Cash, Cash Equivalents and Marketable Securities

	December 31, 2016
									Cash and		Short-Term		Long-Term
	Amortized		Unrealized		Unrealized		Fair		Cash		Marketable		Marketable
	Cost		Gains		Losses		Value		Equivalents		Securities		Securities
Cash	$	595	$	—	$	—	$	595	$	595	$	—	$	—
Level 1:
Money market funds		17		—		—		17		17		—		—
Level 2:
U.S. agency securities		23		—		—		23		—		21		2
U.S. treasury securities		8		—		—		8		—		8		—
Certificates of deposit		16		—		—		16		—		15		1
Commercial paper		5		—		—		5		—		5		—
Corporate debt securities		82		—		—		82		—		69		13
Subtotal		134		—		—		134		—		118		16
Total	$	746	$	—	$	—	$	746	$	612	$	118	$	16

	December 31, 2015
									Cash and		Short-Term		Long-Term
	Amortized		Unrealized		Unrealized		Fair		Cash		Marketable		Marketable
	Cost		Gains		Losses		Value		Equivalents		Securities		Securities
Cash	$	598	$	—	$	—	$	598	$	598	$	—	$	—
Level 1:
Money market funds		11		—		—		11		11		—		—
Level 2:
U.S. agency securities		13		—		—		13		—		9		4
U.S. treasury securities		16		—		—		16		4		12		—
Certificates of deposit		5		—		—		5		—		4		1
Commercial paper		1		—		—		1		—		1		—
Corporate debt securities		54		—		—		54		1		21		32
Subtotal		89		—		—		89		5		47		37
Total	$	698	$	—	$	—	$	698	$	614	$	47	$	37

Fair Value and Notional Principal Amounts of Outstanding or Unsettled Derivative Instruments

The following table shows the notional principal amounts of our outstanding derivative instruments that are not designated as hedging instruments for the periods presented:

	December 31, 2016		December 31, 2015
	(in millions)
Foreign currency exchange-forward contracts (1)(2)	$	6	$	25

(1)	Derivative contracts address foreign currency exchange fluctuations for the Euro versus the U.S. dollar. The Company was entered into two outstanding derivative contracts as of December 31, 2016.

(2)

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Property and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2016

Property Plant And Equipment [Abstract]

Property and Equipment, Net

Property and equipment consists of the following for the periods presented:

	December 31, 2016			December 31, 2015
	(in millions)
Capitalized software and website development	$	153		$	127
Building (1)		123			123
Leasehold improvements		39			32
Computer equipment and purchased software		37			36
Furniture, office equipment and other		19			17
		371			335
Less: accumulated depreciation		(111	)		(88	)
Total	$	260		$	247

(1)

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Goodwill and Intangible Assets, Net (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of Changes in Goodwill

The following table summarizes our goodwill activity by segment for the periods presented:

	Hotel			Non-Hotel			Consolidated
	(in millions)
Balance as of December 31, 2014	$	442		$	292		$	734
Acquisitions (1)		1			16			17
Disposition		(1	)		—			(1	)
Other adjustments (2)		—			(18	)		(18	)
Balance as of December 31, 2015	$	442		$	290		$	732
Acquisitions (1)		10			7			17
Other adjustments (2)		(1	)		(12	)		(13	)
Ending balance as of December 31, 2016	$	451		$	285		$	736

(1)	The additions to goodwill relate to our business acquisitions. See “Note 3— Acquisitions and Dispositions,” for further information.

(2)	Primarily related to impact of changes in foreign currency exchange rates to goodwill.

Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination

Intangible assets, which were acquired in business combinations and recorded at fair value on the date of purchase, consist of the following for the periods presented:

	December 31,
		2016			2015
	(in millions)
Intangible assets with definite lives	$	217		$	198
Less: accumulated amortization		(80	)		(52	)
Intangible assets with definite lives, net		137			146
Intangible assets with indefinite lives		30			30
Total	$	167		$	176

Components of Intangible Assets with Definite Lives

The following table presents the components of our intangible assets with definite lives for the periods presented:

			December 31, 2016							December 31, 2015
	Weighted Average		Gross					Net		Gross					Net
	Remaining Life		Carrying		Accumulated			Carrying		Carrying		Accumulated			Carrying
	(in years)		Amount		Amortization			Amount		Amount		Amortization			Amount
			(in millions)							(in millions)
Trade names and trademarks		7.8	$	56	$	(14	)	$	42	$	53	$	(9	)	$	44
Customer lists and supplier relationships		4.6		84		(31	)		53		82		(20	)		62
Subscriber relationships		4.8		33		(15	)		18		29		(9	)		20
Technology and other		3.4		44		(20	)		24		34		(14	)		20
Total		5.4	$	217	$	(80	)	$	137	$	198	$	(52	)	$	146

Summary of Estimated Future Amortization Expense Related to Intangible Assets with Definite Lives

2017	$	31
2018		28
2019		26
2020		21
2021		14
2022 and thereafter		17
Total	$	137

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Debt (Tables)

12 Months Ended

Dec. 31, 2016

Debt Disclosure [Abstract]

Debt

The Company’s outstanding debt consisted of the following for the periods presented:

	December 31,		December 31,
	2016		2015
	(in millions)
Short-Term Debt:
Chinese Credit Facilities	$	7	$	1
2016 Credit Facility		73		—
Total Short-Term Debt (1)	$	80	$	1

Long-Term Debt:
2015 Credit Facility	$	91	$	200
Total Long-Term Debt	$	91	$	200

(1)

The weighted-average interest rate on short-term debt was 2.1% as of December 31, 2016.

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Summary of Our Domestic and Foreign Income Before Income Taxes

The following table presents a summary of our domestic and foreign income before income taxes:

	Year Ended December 31,
	2016		2015		2014
	(in millions)
Domestic	$	64	$	67	$	146
Foreign		87		172		176
Total	$	151	$	239	$	322

Summary of the Components of Our Provision for Income Taxes

The following table presents a summary of the components of our provision for income taxes:

	Year Ended December 31,
	2016			2015			2014
	(in millions)
Current income tax expense:
Federal	$	38		$	48		$	93
State		2			8			14
Foreign		11			22			6
Current income tax expense		51			78			113
Deferred income tax (benefit) expense:
Federal		(12	)		(29	)		(12	)
State		(3	)		(2	)		(1	)
Foreign		(5	)		(6	)		(4	)
Deferred income tax (benefit) expense:		(20	)		(37	)		(17	)
Provision for income taxes	$	31		$	41		$	96

Summary of Deferred Tax Assets and Deferred Tax Liabilities

The significant components of our deferred tax assets and deferred tax liabilities as of December 31, 2016 and 2015 are as follows:

	December 31,
	2016			2015
	(in millions)
Deferred tax assets:
Stock-based compensation	$	52		$	40
Net operating loss carryforwards		46			31
Provision for accrued expenses		12			12
Deferred rent		5			5
Lease financing obligation		33			33
Foreign advertising spend		10			8
Deferred expense related to cost-sharing arrangement		30			20
Charitable contribution carryforward		20			24
Other		7			4
Total deferred tax assets	$	215		$	177
Less: valuation allowance		(27	)		(17	)
Net deferred tax assets	$	188		$	160
Deferred tax liabilities:
Intangible assets	$	(83	)	$	(81	)
Property and equipment		(28	)		(27	)
Prepaid expenses		(6	)		(4	)
Building – corporate headquarters		(31	)		(31	)
Deferred income related to cost-sharing arrangement		(10	)		(7	)
Total deferred tax liabilities	$	(158	)	$	(150	)
Net deferred tax asset (liability)	$	30		$	10

Reconciliation of the Provision for Income Taxes

A reconciliation of the provision for income taxes to the amounts computed by applying the statutory federal income tax rate to income before income taxes is as follows:

	Year Ended December 31,
	2016			2015			2014
	(in millions)
Income tax expense at the federal statutory rate of 35%	$	53		$	84		$	113
Foreign rate differential		(35	)		(53	)		(49	)
State income taxes, net of effect of federal tax benefit		4			4			13
Unrecognized tax benefits and related interest		11			12			14
Change in cost-sharing treatment of stock-based compensation		(6	)		(13	)		—
Non-deductible transaction costs		—			1			1
Research tax credit		(10	)		(3	)		(2	)
Stock-based compensation		2			2			2
Change in valuation allowance		9			5			5
Other, net		3			2			(1	)
Provision for income taxes	$	31		$	41		$	96

Reconciliation of the Beginning and Ending Amount of Gross Unrecognized Tax Benefits

A reconciliation of the beginning and ending amount of gross unrecognized tax benefits (excluding interest and penalties) is as follows:

	December 31,
	2016			2015		2014
	(in millions)
Balance, beginning of year	$	89		$	67	$	36
Increases to tax positions related to the current year		16			15		13
Increases to tax positions related to the prior year		1			7		18
Reductions due to lapsed statute of limitations		(1	)		—		—
Decreases to tax positions related to the prior year		—			—		—
Settlements during current year		—			—		—
Balance, end of year	$	105		$	89	$	67

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Accrued Expenses and Other Current Liabilities (Tables)

12 Months Ended

Dec. 31, 2016

Payables And Accruals [Abstract]

Details of Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following for the periods presented:

	December 31, 2016		December 31, 2015
	(in millions)
Accrued employee salary, bonus, and related benefits	$	53	$	47
Accrued marketing costs		37		43
Other		37		33
Total	$	127	$	123

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Other Long-Term Liabilities (Tables)

12 Months Ended

Dec. 31, 2016

Other Liabilities Noncurrent [Abstract]

Schedule of Other Long-Term Liabilities

Other long-term liabilities consisted of the following for the periods presented:

	December 31, 2016		December 31, 2015
	(in millions)
Unrecognized tax benefits (1)	$	108	$	87
Financing obligation, net of current portion (2)		84		84
Other (3)		18		18
Total	$	210	$	189

(1)	See “Note 10—Income Taxes” for additional information on our unrecognized tax benefits. Amount includes accrued interest related to this liability.

(2)	Refer to “Note 13 – Commitments and Contingencies,” for additional information on our corporate headquarters lease.

(3)	Amounts primarily consist of long term deferred rent balances related to operating leases for office space.

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Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2016

Commitments And Contingencies Disclosure [Abstract]

Material Commitments and Obligations

The following table summarizes our material commitments and obligations as of December 31, 2016:

			By Period
	Total		Less than 1 year		1 to 3 years		3 to 5 years		More than 5 years
	(in millions)
Property leases, net of sublease income (1)	$	248	$	25	$	51	$	52	$	120
Expected interest payments on 2015 Credit Facility (2)		7		2		4		1		—
Expected commitment fee payments on 2015 Credit Facility (3)		7		2		4		1		—
Total (4)	$	262	$	29	$	59	$	54	$	120

(1)	Estimated future minimum rental payments under operating leases with non-cancelable lease terms, including our corporate headquarters lease in Needham, MA.

(2)

(3)	The amounts included as expected commitment fee payments in this table are based on the unused portion of credit facility, issued letters of credit, and current effective commitment fee rate as of December 31, 2016; however, these variables could change significantly in the future.

(4)

Future Minimum Commitments Under Our Corporate Headquarters Lease and Other Non-Cancelable Operating Leases

Year	Corporate Headquarters Lease (1)		Other Operating Leases		Sublease Income			Total Lease Commitments (Net of Sublease Income)
	(in millions)
2017	$	9	$	17	$	(1	)	$	25
2018		9		17		(1	)		25
2019		9		18		(1	)		26
2020		9		17		—			26
2021		10		16		—			26
Thereafter		87		33		—			120
Total minimum lease payments	$	133	$	118	$	(3	)	$	248

(1)	Amount includes an $84 million financing obligation, which we have recorded in other long-term liabilities on our consolidated balance sheet at December 31, 2016, related to our corporate headquarters lease.

XML 57 R42.htm IDEA: XBRL DOCUMENT

Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2016

Equity [Abstract]

Accumulated Other Comprehensive Loss Primarily Comprised of Accumulated Foreign Currency Translation Adjustments

Accumulated other comprehensive loss is primarily comprised of accumulated foreign currency translation adjustments, as follows for the periods presented:

	December 31, 2016			December 31, 2015
	(in millions)
Cumulative foreign currency translation adjustments (1)	$	(77	)	$	(63	)
Total accumulated other comprehensive loss (2)	$	(77	)	$	(63	)

(1)

We consider our foreign subsidiary earnings indefinitely reinvested; therefore; deferred taxes are not provided on foreign currency translation adjustments.

(2)

Our accumulated net unrealized gain (loss) on available for sale securities was not material as of December 31, 2016 and December 31, 2015.

XML 58 R43.htm IDEA: XBRL DOCUMENT

Segment and Geographic Information (Tables)

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Summary of Segment Information

	Year ended December 31, 2016
	Hotel		Non-Hotel			Corporate and unallocated			Total
	(in millions)
Revenue	$	1,190	$	290		$	—		$	1,480
Adjusted EBITDA (1)		380		(28	)		—			352
Depreciation							(69	)		(69	)
Amortization of intangible assets							(32	)		(32	)
Stock-based compensation							(85	)		(85	)
Operating income										166
Other expense, net										(15	)
Income before income taxes										151
Provision for income taxes										(31	)
Net income									$	120

	Year ended December 31, 2015
	Hotel		Non-Hotel			Corporate and unallocated			Total
	(in millions)
Revenue	$	1,263	$	229		$	—		$	1,492
Adjusted EBITDA (1)		472		(6	)		—			466
Depreciation							(57	)		(57	)
Amortization of intangible assets							(36	)		(36	)
Stock-based compensation							(72	)		(72	)
Non-cash charitable contribution (2)							(67	)		(67	)
Other non-recurring expenses							(2	)		(2	)
Operating income										232
Other income, net										7
Income before income taxes										239
Provision for income taxes										(41	)
Net income									$	198

	Year ended December 31, 2014
	Hotel		Non-Hotel			Corporate and unallocated			Total
	(in millions)
Revenue	$	1,135	$	111		$	—		$	1,246
Adjusted EBITDA (1)(3)		472		(4	)		—			468
Depreciation							(47	)		(47	)
Amortization of intangible assets							(18	)		(18	)
Stock-based compensation							(63	)		(63	)
Operating income										340
Other expense, net										(18	)
Income before income taxes										322
Provision for income taxes										(96	)
Net income									$	226

(1)	Includes allocated general and administrative expenses in our Hotel segment of $80 million, $85 million and $87 million; and in our Non-Hotel segment of $38 million, $28 million and $18 million for the years ended December 31, 2016, 2015 and 2014, respectively.

(2)

(3)	Hotel segment Adjusted EBITDA includes charitable contributions to the Foundation which were funded in cash of $8 million for the year ended December 31, 2014.

Summary of Total Revenue by Source

The following table presents revenue by source for the periods presented:

	Year ended December 31,
	2016		2015		2014
	(in millions)
TripAdvisor-branded click-based and transaction	$	750	$	837	$	764
TripAdvisor-branded display-based advertising and subscription		282		272		233
Other hotel revenue		158		154		138
Non-hotel revenue		290		229		111
Total revenue	$	1,480	$	1,492	$	1,246

Summary of Revenue by Geographic Area

The following table presents revenue by geographic area, the United States, the United Kingdom and all other countries, based on the geographic location of our websites for the periods presented:

	Year ended December 31,
	2016		2015		2014
	(in millions)
Revenue
United States	$	799	$	739	$	593
United Kingdom		210		215		191
All other countries		471		538		462
Total revenue	$	1,480	$	1,492	$	1,246

Property and Equipment, Net

The following table presents property and equipment, net for the United States and all other countries based on the geographic location of the assets for the periods presented:

	December 31,
	2016		2015
	(in millions)
Property and equipment, net
United States	$	222	$	217
All other countries		38		30
Total	$	260	$	247

XML 59 R44.htm IDEA: XBRL DOCUMENT

Interest Income and Other, Net (Tables)

12 Months Ended

Dec. 31, 2016

Other Income And Expenses [Abstract]

Summary of Interest Income and Other, Net

The following table presents the detail of interest income and other, net, for the periods presented:

	Year Ended December 31,
	2016			2015			2014
	(in millions)
Net loss, realized and unrealized, on foreign currency exchange and foreign currency derivative contracts and other, net	$	(4	)	$	(4	)	$	(10	)
Interest income		1			1			1
Gain on sale of business (1)		—			20			—
Total	$	(3	)	$	17		$	(9	)


(1)	See “Note 3 – Acquisitions and Dispositions” for information regarding our gain on sale of business in 2015.

XML 60 R45.htm IDEA: XBRL DOCUMENT

Quarterly Financial Information (Tables)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information

	Three Months Ended
	March 31 (3)		June 30 (3)		September 30		December 31
	(in millions, except per share data)
Year ended December 31, 2016
Revenue	$	352	$	391	$	421	$	316
Operating income		42		47		66		10
Net income		29		34		55		1
Basic earnings per share (1)	$	0.20	$	0.23	$	0.38	$	0.01
Diluted earnings per share (1)	$	0.20	$	0.23	$	0.37	$	0.01
Year ended December 31, 2015
Revenue	$	363	$	405	$	415	$	309
Operating income (loss) (2)		90		79		88		(25	)
Net income		63		58		74		3
Basic earnings per share (1)	$	0.44	$	0.40	$	0.51	$	0.02
Diluted earnings per share (1)	$	0.43	$	0.40	$	0.51	$	0.02


(1)	Earnings per share is computed independently for each of the quarters presented. Therefore, the sum of the quarterly earnings per share may not equal the total computed for the year.
(2)	During the fourth quarter of 2015, we recognized an incremental $59 million charge over the third quarter of 2015, related to a non-cash charitable contribution recorded to general and administrative expense on our consolidated statement of operations. Refer to “Note 17 – Segments and Geographic Information” for a discussion of this charitable contribution.
(3)	In the third quarter of 2016, the Company early adopted ASU 2016-09, Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. Refer to “Note 2 – Significant Accounting Policies” for the impact of the adoption of this guidance on the first and second quarters of 2016.

XML 61 R46.htm IDEA: XBRL DOCUMENT

Organization and Business Description - Additional Information (Details)		12 Months Ended
	Dec. 11, 2012 shares	Dec. 31, 2016 Vote / shares Market Brand shares
Description Of Business And Basis Of Presentation [Line Items]
Number of markets with localized versions of website \| Market		48
Number of other media brands with websites \| Brand		23
Common Stock
Description Of Business And Basis Of Presentation [Line Items]
Right to voting		one vote per share
Vote per common stock share \| Vote / shares		1
Class B Common Stock
Description Of Business And Basis Of Presentation [Line Items]
Right to voting		10 votes per share
Vote per common stock share \| Vote / shares		10
Liberty
Description Of Business And Basis Of Presentation [Line Items]
Common stock purchased by Liberty	4,799,848
Beneficially ownership of shares of common stock	18,159,752
Beneficially ownership of shares of Common Stock Class B	12,799,999
Percentage of interest held by related party		100.00%
LTRIP
Description Of Business And Basis Of Presentation [Line Items]
Beneficially ownership of shares of common stock		18,159,752
Percentage taken from outstanding shares of common stock		13.80%
Percentage taken from outstanding shares of Class B Common Stock		100.00%
Percentage of beneficially ownership of shares of common stock		21.50%
Right to voting		one vote per share
Beneficially ownership of equity securities		56.40%
LTRIP \| Common Stock
Description Of Business And Basis Of Presentation [Line Items]
Right to voting		one vote per share
Vote per common stock share \| Vote / shares		1
LTRIP \| Class B Common Stock
Description Of Business And Basis Of Presentation [Line Items]
Beneficially ownership of shares of common stock		12,799,999
Percentage taken from outstanding shares of common stock		100.00%
Right to voting		Ten votes per share
Vote per common stock share \| Vote / shares		10

XML 62 R47.htm IDEA: XBRL DOCUMENT

Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Jan. 01, 2016
Schedule Of Accounting Policies [Line Items]
Minimum maturities of short-term marketable securities	90 days	90 days
Maximum remaining maturity for short-term marketable securities	12 months	12 months
Maximum maturity period for marketable security	3 years
Weighted Average Maturity	18 months
Cost method investments	$ 14	$ 0
Minimum maturity at purchase date for a short term marketable security	90 days
Accounts receivable due period	30 days
Minimum probability that the fair value of the reporting unit is less than the carrying amount	50.00%
Foreign currency exchange losses	$ 4	4	$ 10
Advertising expense	543	507	341
Prepaid marketing expenses	5	2
Prepaid Expense, Current	5
Deferred merchant payables	$ 128	105
Foreign currency exchange contracts maturity period, maximum	90 days
Increase in cash flows from operating activities	$ 321	418	407
Reduction in cash flows from financing activities	143	189	61
New Accounting Pronouncement, Early Adoption \| ASU 2016-09
Schedule Of Accounting Policies [Line Items]
Increase in cash flows from operating activities		36	20
Reduction in cash flows from financing activities		$ 36	$ 20
Reduction to retained earnings				$ 1
Recognition of net excess tax expense (benefit) in provision for income taxes	$ 1
Customer Concentration Risk \| Sales \| Expedia and Priceline
Schedule Of Accounting Policies [Line Items]
Customer concentration risk	46.00%	46.00%	46.00%
Customer Concentration Risk \| Sales \| Expedia
Schedule Of Accounting Policies [Line Items]
Customer concentration risk	10.00%	10.00%	10.00%
Customer Concentration Risk \| Sales \| Priceline
Schedule Of Accounting Policies [Line Items]
Customer concentration risk	10.00%	10.00%	10.00%
Credit Concentration Risk \| Accounts Receivable \| Expedia
Schedule Of Accounting Policies [Line Items]
Customer concentration risk	12.00%	11.00%
Stock Options
Schedule Of Accounting Policies [Line Items]
Term of stock options, granted	10 years
Stock options requisite service period	4 years
Stock options vest period	4 years
Restricted Stock Units
Schedule Of Accounting Policies [Line Items]
Stock options vest period	4 years
Minimum
Schedule Of Accounting Policies [Line Items]
Depreciation over the estimated useful lives of assets	3 years
Amortized estimated useful lives of Intangible assets	1 year
Maximum
Schedule Of Accounting Policies [Line Items]
Depreciation over the estimated useful lives of assets	5 years
Amortized estimated useful lives of Intangible assets	12 years

XML 63 R48.htm IDEA: XBRL DOCUMENT

Significant Accounting Policies - Summary of Changes in the Allowance for Doubtful Accounts (Details) - Allowance for Doubtful Accounts - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance, beginning of period	$ 6	$ 7	$ 3
Charges (recoveries) to earnings	4	3	3
Write-offs, net of recoveries and other adjustments	(1)	(4)	1
Balance, end of period	$ 9	$ 6	$ 7

XML 64 R49.htm IDEA: XBRL DOCUMENT

Significant Accounting Policies - Adoption of New Guidance Impact on Previously Reported Quarterly Results (Details) - USD ($)
$ / shares in Units, $ in Millions

3 Months Ended

6 Months Ended

12 Months Ended

Dec. 31, 2016

Sep. 30, 2016

Jun. 30, 2016

Mar. 31, 2016

Dec. 31, 2015

Sep. 30, 2015

Jun. 30, 2015

^[1]

Mar. 31, 2015

^[1]

Jun. 30, 2016

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Consolidated Statement of Operations:

$ 10

$ 66

$ 47

^[1]

$ 42

^[1]

$ (25)

^[2]

$ 88

^[2]

$ 79

^[2]

$ 90

^[2]

$ 166

$ 232

$ 340

(31)

(41)

(96)

$ 1

$ 55

$ 34

^[1]

$ 29

^[1]

$ 3

$ 74

$ 58

$ 63

$ 120

$ 198

$ 226

$ 0.01

^[3]

$ 0.38

^[3]

$ 0.23

^[1],[3]

$ 0.20

^[1],[3]

$ 0.02

^[3]

$ 0.51

^[3]

$ 0.40

^[3]

$ 0.44

^[3]

$ 0.83

$ 1.38

$ 1.58

$ 0.01

^[3]

$ 0.37

^[3]

$ 0.23

^[1],[3]

$ 0.20

^[1],[3]

$ 0.02

^[3]

$ 0.51

^[3]

$ 0.40

^[3]

$ 0.43

^[3]

$ 0.82

$ 1.36

$ 1.55

$ 321

$ 418

$ 407

New Accounting Pronouncement, Early Adoption | ASU 2016-09

$ (143)

(189)

(61)

New Accounting Pronouncement, Early Adoption | ASU 2016-09 | As Reported

$ (36)

$ (20)

Consolidated Statement of Operations:

$ 48

$ 42

(11)

$ 34

$ 27

$ 0.23

$ 0.19

$ 0.23

$ 0.18

$ 120

$ 357

New Accounting Pronouncement, Early Adoption | ASU 2016-09 | As Adjusted

(94)

(123)

Consolidated Statement of Operations:

^[4]

$ 47

^[5]

^[4]

(10)

(9)

^[5]

^[4]

$ 34

$ 29

^[5]

^[4]

$ 0.23

$ 0.20

^[5]

^[4]

$ 0.23

$ 0.20

^[5]

^[5]

$ 124

^[4]

363

^[5]

$ (98)

^[4]

$ (129)

[1]	In the third quarter of 2016, the Company early adopted ASU 2016-09, Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. Refer to “Note 2 – Significant Accounting Policies” for the impact of the adoption of this guidance on the first and second quarters of 2016.
[2]	During the fourth quarter of 2015, we recognized an incremental $59 million charge over the third quarter of 2015, related to a non-cash charitable contribution recorded to general and administrative expense on our consolidated statement of operations. Refer to “Note 17 – Segments and Geographic Information” for a discussion of this charitable contribution.
[3]	Earnings per share is computed independently for each of the quarters presented. Therefore, the sum of the quarterly earnings per share may not equal the total computed for the year.
[4]	The election to account for forfeitures as they occur did not have a material impact for the three months ended March 31, 2016 and resulted in an increase to stock-based compensation expense of approximately $1 million for the three months ended June 30, 2016.
[5]	Includes the reclassification of cash flows related to excess tax benefits from financing activities to operating activities of $4 million and $2 million for the three months ending March 31, 2016 and June 30, 2016, respectively.

XML 65 R50.htm IDEA: XBRL DOCUMENT

Significant Accounting Policies - Adoption of New Guidance Impact on Previously Reported Quarterly Results (Parenthetical) (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Increase in stock-based compensation expense			$ 85	$ 72	$ 63
Reclassification of cash flows related to excess tax benefits from financing activities to operating activities			$ 321	418	407
New Accounting Pronouncement, Early Adoption \| ASU 2016-09
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Increase in stock-based compensation expense	$ 1
Reclassification of cash flows related to excess tax benefits from financing activities to operating activities				$ 36	$ 20
New Accounting Pronouncement, Early Adoption \| ASU 2016-09 \| Reclassification from Financing Activities to Operating Activities
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Reclassification of cash flows related to excess tax benefits from financing activities to operating activities	$ 2	$ 4

XML 66 R51.htm IDEA: XBRL DOCUMENT

Acquisitions and Dispositions - Additional Information (Details)
$ in Millions

1 Months Ended

12 Months Ended

Aug. 31, 2014

USD ($)

Dec. 31, 2016

USD ($)

Business

Dec. 31, 2015

USD ($)

Business

Dec. 31, 2014

USD ($)

Business

Aug. 31, 2015

USD ($)

Disposal group, gain on sale of subsidiary

$ 62

Cost method investments

$ 14

$ 0

^[1]

One of Chinese Subsidiaries

Disposal group, percentage of ownership interest sold

100.00%

Disposal group, total consideration

$ 28

Disposal group, deconsolidated assets on sale of business

Disposal group, cash included in deconsolidated asset

Disposal group, deconsolidated liabilities on sale of business

$ 4

Disposal group, gain on sale of subsidiary

Series of Individually Immaterial Business Acquisitions

Acquisition-related costs

$ 1

$ 4

Number of business acquired | Business

Total acquisition purchase price

$ 192

$ 34

$ 208

Cash consideration paid, net of cash acquired

132

$ 28

199

Cash held back on acquisition

Purchase price consideration

$ 34

^[2]

$ 28

^[3]

$ 400

Cash consideration paid

$ 187

Stock option issued related to acquisition | shares

100,595

Fair value of stock option issued related to acquisition

$ 5

Unrecognized compensation expense, Stock Options

$ 3

Period of recognition (in years)

3 years

Percentage of consolidated revenue accounted by acquisitions

3.00%

Series of Individually Immaterial Business Acquisitions | Viator, Inc [Member]

$ 55

Tous Au Restaurant

Business acquisition percentage of outstanding shares of capital stock

100.00%

Jan. 31, 2016

HouseTrip

Business acquisition percentage of outstanding shares of capital stock

100.00%

Apr. 30, 2016

Citymaps

Business acquisition percentage of outstanding shares of capital stock

100.00%

Aug. 31, 2016

Sneat

Business acquisition percentage of outstanding shares of capital stock

100.00%

Oct. 31, 2016

Couverts

Business acquisition percentage of outstanding shares of capital stock

100.00%

Oct. 31, 2016

ZeTrip

Business acquisition percentage of outstanding shares of capital stock

100.00%

Jan. 31, 2015

BestTables

Business acquisition percentage of outstanding shares of capital stock

100.00%

Mar. 31, 2015

Dimmi

Business acquisition percentage of outstanding shares of capital stock

100.00%

May 31, 2015

Vacation Home Rentals

Business acquisition percentage of outstanding shares of capital stock

100.00%

May 31, 2014

Tripbod

Business acquisition percentage of outstanding shares of capital stock

100.00%

May 31, 2014

Lafourchette

Business acquisition percentage of outstanding shares of capital stock

100.00%

May 31, 2014

MyTable and Restopolis

Business acquisition percentage of outstanding shares of capital stock

100.00%

Oct. 31, 2014

Iens

Business acquisition percentage of outstanding shares of capital stock

100.00%

Dec. 31, 2014

[1]	See “Note 3 – Acquisitions and Dispositions” for information regarding our gain on sale of business in 2015.
[2]	Subject to adjustment based on (i) final working capital adjustment calculations to be determined for Sneat and Couverts, and (ii) indemnification obligations for general representations and warranties of the acquired company stockholders.
[3]	Subject to adjustment based on indemnification obligations for general representations and warranties of certain acquired company stockholders.

XML 67 R52.htm IDEA: XBRL DOCUMENT

Acquisitions and Dispositions - Summary of Aggregate Purchase Price Consideration Allocated to Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($)
$ in Millions

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Series of Individually Immaterial Business Acquisitions

Goodwill

$ 736

$ 732

$ 734

Goodwill

^[1]

253

^[2]

Net tangible assets (liabilities)

^[3]

^[4]

194

^[5]

(8)

^[6]

(7)

^[7]

Deferred tax liabilities, net

(2)

(40)

Total purchase price consideration

$ 34

^[8]

$ 28

^[9]

$ 400

[1]	Goodwill is not deductible for tax purposes.
[2]	Goodwill in the amount of $5 million is expected to be deductible for tax purposes.
[3]	Identifiable definite-lived intangible assets acquired during 2016 were comprised of trade names of $4 million with a weighted average life of 10 years, customer lists and supplier relationships of $4 million with a weighted average life of 6 years, subscriber relationships of $5 million with a weighted average life of approximately 7 years, and technology and other of $12 million with a weighted average life of approximately 5 years. The overall weighted-average life of the identifiable definite-lived intangible assets acquired in the purchase of these businesses during 2016 was 6 years, and will be amortized on a straight-line basis over their estimated useful lives from acquisition date.
[4]	Identifiable definite-lived intangible assets acquired during 2015 were comprised of trade names of $2 million with a weighted average life of approximately 10 years, customer lists and supplier relationships of $7 million with a weighted average life of approximately 6 years and technology and other of $3 million with a weighted average life of approximately 2 years. The overall weighted-average life of the identifiable definite-lived intangible assets acquired in the purchase of these businesses during 2015 was 6 years, and will be amortized on a straight-line basis over their estimated useful lives from acquisition date.
[5]	Identifiable definite-lived intangible assets acquired during 2014 were comprised of trade names of $44 million with a weighted average life of 10 years, customer lists and supplier relationships of $82 million with an approximate weighted average life of 7 years, subscriber relationships of $25 million with a weighted average life of 6 years and developed technology and other of $43 million with an approximate weighted average life of 5 years. The overall weighted-average life of the identifiable definite-lived intangible assets acquired in the purchase of the companies during 2014 was approximately 7 years, and will be amortized on a straight-line basis over their estimated useful lives from acquisition date.
[6]	Primarily includes cash acquired of $4 million, accounts receivable of $2 million, and liabilities assumed, including accrued expenses and deferred merchant payables of $3 million and $10 million, respectively, which reflect their respective fair values at acquisition.
[7]	Includes assets acquired, including cash of $62 million and accounts receivable of $25 million and liabilities assumed, including deferred merchant payables of $76 million, accrued expenses and other current liabilities of $15 million and deferred revenue of $5 million which reflect their respective fair values at acquisition date.
[8]	Subject to adjustment based on (i) final working capital adjustment calculations to be determined for Sneat and Couverts, and (ii) indemnification obligations for general representations and warranties of the acquired company stockholders.
[9]	Subject to adjustment based on indemnification obligations for general representations and warranties of certain acquired company stockholders.

XML 68 R53.htm IDEA: XBRL DOCUMENT

Acquisitions and Dispositions - Summary of Aggregate Purchase Price Consideration Allocated to Fair Value of Assets Acquired and Liabilities Assumed (Parenthetical) (Details) - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Goodwill expected to be deductible for tax purposes

$ 62

Series of Individually Immaterial Business Acquisitions

Weighted average life of identifiable definite-lived intangible assets acquired

$ 25

^[1]

$ 12

^[2]

$ 194

^[3]

6 years

7 years

Assets acquired, accounts receivable

$ 4

$ 7

Liabilities assumed, deferred revenue

Series of Individually Immaterial Business Acquisitions | Accrued Expenses

Series of Individually Immaterial Business Acquisitions | Deferred Merchant Payables

Liabilities assumed

Series of Individually Immaterial Business Acquisitions | Trade Names

Liabilities assumed

Weighted average life of identifiable definite-lived intangible assets acquired

$ 4

$ 2

$ 44

10 years

Series of Individually Immaterial Business Acquisitions | Customer Lists and Supplier Relationships

Weighted average life of identifiable definite-lived intangible assets acquired

$ 4

$ 7

$ 82

6 years

7 years

Series of Individually Immaterial Business Acquisitions | Subscriber Relationships

Weighted average life of identifiable definite-lived intangible assets acquired

$ 5

$ 25

7 years

6 years

Series of Individually Immaterial Business Acquisitions | Developed Technology and Other

Weighted average life of identifiable definite-lived intangible assets acquired

$ 12

$ 3

$ 43

5 years

2 years

5 years

[1]	Identifiable definite-lived intangible assets acquired during 2016 were comprised of trade names of $4 million with a weighted average life of 10 years, customer lists and supplier relationships of $4 million with a weighted average life of 6 years, subscriber relationships of $5 million with a weighted average life of approximately 7 years, and technology and other of $12 million with a weighted average life of approximately 5 years. The overall weighted-average life of the identifiable definite-lived intangible assets acquired in the purchase of these businesses during 2016 was 6 years, and will be amortized on a straight-line basis over their estimated useful lives from acquisition date.
[2]	Identifiable definite-lived intangible assets acquired during 2015 were comprised of trade names of $2 million with a weighted average life of approximately 10 years, customer lists and supplier relationships of $7 million with a weighted average life of approximately 6 years and technology and other of $3 million with a weighted average life of approximately 2 years. The overall weighted-average life of the identifiable definite-lived intangible assets acquired in the purchase of these businesses during 2015 was 6 years, and will be amortized on a straight-line basis over their estimated useful lives from acquisition date.
[3]	Identifiable definite-lived intangible assets acquired during 2014 were comprised of trade names of $44 million with a weighted average life of 10 years, customer lists and supplier relationships of $82 million with an approximate weighted average life of 7 years, subscriber relationships of $25 million with a weighted average life of 6 years and developed technology and other of $43 million with an approximate weighted average life of 5 years. The overall weighted-average life of the identifiable definite-lived intangible assets acquired in the purchase of the companies during 2014 was approximately 7 years, and will be amortized on a straight-line basis over their estimated useful lives from acquisition date.

XML 69 R54.htm IDEA: XBRL DOCUMENT

Stock Based Awards and Other Equity Instruments - Amount of Stock-Based Compensation Expense Related to Stock-Based Awards, Primarily Stock Options and RSUs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 85	$ 72	$ 63
Income tax benefit from stock-based compensation expense	(31)	(26)	(24)
Total stock-based compensation expense, net of tax effect	54	46	39
Selling and Marketing
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	20	16	13
Technology and Content
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	40	28	27
General and Administrative
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 25	$ 28	$ 23

XML 70 R55.htm IDEA: XBRL DOCUMENT

Stock Based Awards and Other Equity Instruments - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions			12 Months Ended
	Sep. 12, 2014	Jun. 28, 2013	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 20, 2011
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Capitalized stock based compensation as internal-use software and website development costs			$ 12	$ 8	$ 8
Common shares registered for issuance under incentive plan						17,500,000
Common stock share issuance under plan		15,000,000
Cash received from stock option exercises			$ 7	12	3
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of stock options issued			1,064,000
Term of stock options, granted			10 years
Stock awards vest period			4 years
RSU
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock awards vest period			4 years
RSU's issued under incentive plan			2,016,000
2011 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common shares registered for issuance under incentive plan						17,400,000
Common shares previously registered for issuance under incentive plan						7,400,000
Share registered under amendment						10,000,000
Common stock share issuance under plan			15,051,221
2011 Plan \| Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of stock options issued			1,063,672
Term of stock options, granted			10 years
Stock awards vest period			4 years
Closing stock price			$ 46.37
Total intrinsic value			$ 24	$ 149	$ 75
Weighted-average grant date fair value of options granted			$ 22.95	$ 33.02	$ 46.65
Total fair value of stock options vested			$ 28	$ 36	$ 34
Cash received from stock option exercises			7	12	3
Income tax benefits from exercise or settlement of stock-based awards			$ 21	$ 63	$ 32
2011 Plan \| RSU
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock awards vest period			4 years
RSU's issued under incentive plan			2,015,898
Deferred Compensation Plan for Non Employee Directors
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common shares registered for issuance under incentive plan						100,000
2010 Stock Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock	100,595
2011 Plan \| Acquisition Related Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average grant date fair value of options granted					$ 80.31

XML 71 R56.htm IDEA: XBRL DOCUMENT

Stock Based Awards and Other Equity Instruments - Summary of Stock Option (Details) - Stock Options
$ / shares in Units, shares in Thousands, $ in Millions

12 Months Ended

Dec. 31, 2016

USD ($)

$ / shares

Options Outstanding

Options Outstanding, Beginning balance | shares

5,720

Options Outstanding, Granted | shares

1,064

Options Outstanding, Exercised | shares

(733)

^[1]

Options Outstanding, Cancelled or expired | shares

(233)

Options Outstanding, Ending balance | shares

5,818

Options Outstanding, Exercisable | shares

2,796

Weighted Average Exercise Price per share

Options Outstanding, Weighted Average Exercise Price, Beginning Balance | $ / shares

$ 53.71

Options Granted, Weighted Average Exercise Price | $ / shares

63.43

Options Exercised, Weighted Average Exercise Price | $ / shares

31.58

^[1]

Options Cancelled or expired, Weighted Average Exercise Price | $ / shares

70.76

Options Outstanding, Weighted Average Exercise Price, Ending balance | $ / shares

57.60

Options Exercisable, Weighted Average Exercise Price | $ / shares

$ 42.95

Weighted Average Remaining Contractual Life and Aggregate Intrinsic Value

Options Outstanding, Weighted Average Remaining Contractual Life

5 years 6 months

Options Exercisable, Weighted Average Remaining Contractual Life

4 years 3 months 18 days

Options Outstanding, Aggregate Intrinsic Value | $

$ 25

Options Exercisable, Aggregate Intrinsic Value | $

$ 24

[1]

XML 72 R57.htm IDEA: XBRL DOCUMENT

Stock Based Awards and Other Equity Instruments - Summary of Stock Option (Parenthetical) (Details)	12 Months Ended
	Dec. 31, 2016 shares
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options non converted into shares due to net share settlement	318,773

XML 73 R58.htm IDEA: XBRL DOCUMENT

Stock Based Awards and Other Equity Instruments - Weighted-Average Assumptions of Estimated Fair Value of Stock Option Grants (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Risk free interest rate	1.20%	1.58%	1.79%
Expected term (in years)	4 years 10 months 6 days	5 years 5 months 1 day	5 years 9 months 18 days
Expected volatility	41.81%	41.79%	44.04%

XML 74 R59.htm IDEA: XBRL DOCUMENT

Stock Based Awards and Other Equity Instruments - Summary of RSU Activity (Details) - Restricted Stock Units
$ / shares in Units, shares in Thousands, $ in Millions

12 Months Ended

Dec. 31, 2016

USD ($)

$ / shares

RSUs outstanding

Unvested RSUs outstanding, Beginning balance | shares

1,750

Unvested RSUs, Granted | shares

2,016

Unvested RSUs, Vested and released | shares

(627)

^[1]

Unvested RSUs, Cancelled | shares

(283)

Unvested RSUs outstanding, Ending balance | shares

2,856

Weighted Average Grant-Date Fair Value Per Share

Unvested RSUs outstanding, Weighted Average Grant-Date Fair Value Per Share, Beginning balance | $ / shares

$ 79.02

Weighted Average Grant-Date Fair Value Per Share, Granted | $ / shares

63.71

Weighted Average Grant-Date Fair Value Per Share, Vested and released | $ / shares

76.02

^[1]

Weighted Average Grant-Date Fair Value Per Share, Cancelled | $ / shares

73.06

Unvested RSUs outstanding, Weighted Average Grant-Date Fair Value Per Share, Ending balance | $ / shares

$ 69.35

Aggregate Intrinsic Value

Unvested RSUs outstanding, Aggregate Intrinsic Value | $

$ 132

[1]

XML 75 R60.htm IDEA: XBRL DOCUMENT

Stock Based Awards and Other Equity Instruments - Summary of RSU Activity (Parenthetical) (Details)	12 Months Ended
	Dec. 31, 2016 shares
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
RSUs withheld to satisfy withholding tax requirements	173,429

XML 76 R61.htm IDEA: XBRL DOCUMENT

Stock Based Awards and Other Equity Instruments - Summary of Unrecognized Compensation Expense and Weighted Average Period Remaining (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($)
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation expense	$ 48
Weighted average period remaining (in years)	2 years 3 months 18 days
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average period remaining (in years)	2 years 9 months 18 days
Unrecognized compensation expense, RSUs	$ 149

XML 77 R62.htm IDEA: XBRL DOCUMENT

Earnings Per Share - Reconciliation of Weighted Average Number of Shares of Common Stock Outstanding In Calculating EPS (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions

3 Months Ended

12 Months Ended

Dec. 31, 2016

Sep. 30, 2016

Jun. 30, 2016

^[1]

Mar. 31, 2016

^[1]

Dec. 31, 2015

Sep. 30, 2015

Jun. 30, 2015

^[1]

Mar. 31, 2015

^[1]

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Numerator:

Weighted average shares used to compute Basic EPS

$ 1

$ 55

$ 34

$ 29

$ 3

$ 74

$ 58

$ 63

$ 120

$ 198

$ 226

Denominator:

145,443

143,836

142,721

Weighted average effect of dilutive securities:

Stock options

1,129

1,839

2,734

RSUs and other dilutive securities

321

292

345

Weighted average shares used to compute Diluted EPS

146,893

145,967

145,800

$ 0.01

^[2]

$ 0.38

^[2]

$ 0.23

^[2]

$ 0.20

^[2]

$ 0.02

^[2]

$ 0.51

^[2]

$ 0.40

^[2]

$ 0.44

^[2]

$ 0.83

$ 1.38

$ 1.58

Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]

$ 0.01

^[2]

$ 0.37

^[2]

$ 0.23

^[2]

$ 0.20

^[2]

$ 0.02

^[2]

$ 0.51

^[2]

$ 0.40

^[2]

$ 0.43

^[2]

$ 0.82

$ 1.36

$ 1.55

[1]	In the third quarter of 2016, the Company early adopted ASU 2016-09, Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. Refer to “Note 2 – Significant Accounting Policies” for the impact of the adoption of this guidance on the first and second quarters of 2016.
[2]	Earnings per share is computed independently for each of the quarters presented. Therefore, the sum of the quarterly earnings per share may not equal the total computed for the year.

XML 78 R63.htm IDEA: XBRL DOCUMENT

Earnings Per Share - Common Shares Related to Stock Options and RSUs Excluded from Calculated Diluted EPS (Details) - shares
shares in Thousands

12 Months Ended

Dec. 31, 2016

^[1]

Dec. 31, 2015

^[2]

Dec. 31, 2014

^[3]

Antidilutive securities excluded from computation of earnings per share, amount

3,879

2,704

1,641

Stock Options

Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]

Antidilutive securities excluded from computation of earnings per share, amount

3,019

2,142

1,450

Restricted Stock Units

Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]

Antidilutive securities excluded from computation of earnings per share, amount

860

562

191

[1]	These totals do not include 125,000 performance based options and 12,799 performance based RSUs representing the right to acquire 137,799 shares of common stock for which all targets required to trigger vesting had not been achieved; therefore, such awards were excluded from the calculation of weighted average shares used to compute Diluted EPS for those reporting periods.
[2]	These totals do not include 66,666 performance based options and 12,799 performance based RSUs representing the right to acquire 79,465 shares of common stock for which all targets required to trigger vesting had not been achieved; therefore, such awards were excluded from the calculation of weighted average shares used to compute Diluted EPS for those reporting periods.
[3]	These totals do not include 66,666 performance based options and 44,000 performance based RSUs representing the right to acquire 110,666 shares of common stock, respectively, for which all targets required to trigger vesting had not been achieved; therefore, such awards were excluded from the calculation of weighted average shares used to compute Diluted EPS for those reporting periods.

XML 79 R64.htm IDEA: XBRL DOCUMENT

Earnings Per Share - Common Shares Related to Stock Options and RSUs Excluded from Calculated Diluted EPS (Parenthetical) (Details) - shares

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]

Antidilutive securities excluded from computation of earnings per share, amount

3,879,000

^[1]

2,704,000

^[2]

1,641,000

^[3]

Stock Options

Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]

Antidilutive securities excluded from computation of earnings per share, amount

3,019,000

^[1]

2,142,000

^[2]

1,450,000

^[3]

Restricted Stock Units

Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]

Antidilutive securities excluded from computation of earnings per share, amount

860,000

^[1]

562,000

^[2]

191,000

^[3]

Performance Shares

Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]

Antidilutive securities excluded from computation of earnings per share, amount

137,799

79,465

110,666

Performance Shares | Stock Options

Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]

Antidilutive securities excluded from computation of earnings per share, amount

125,000

66,666

Performance Shares | Restricted Stock Units

Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]

Antidilutive securities excluded from computation of earnings per share, amount

12,799

44,000

[1]	These totals do not include 125,000 performance based options and 12,799 performance based RSUs representing the right to acquire 137,799 shares of common stock for which all targets required to trigger vesting had not been achieved; therefore, such awards were excluded from the calculation of weighted average shares used to compute Diluted EPS for those reporting periods.
[2]	These totals do not include 66,666 performance based options and 12,799 performance based RSUs representing the right to acquire 79,465 shares of common stock for which all targets required to trigger vesting had not been achieved; therefore, such awards were excluded from the calculation of weighted average shares used to compute Diluted EPS for those reporting periods.
[3]	These totals do not include 66,666 performance based options and 44,000 performance based RSUs representing the right to acquire 110,666 shares of common stock, respectively, for which all targets required to trigger vesting had not been achieved; therefore, such awards were excluded from the calculation of weighted average shares used to compute Diluted EPS for those reporting periods.

XML 80 R65.htm IDEA: XBRL DOCUMENT

Financial Instruments - Schedule of Cash, Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash and Cash Equivalents	$ 612	$ 614
Short-Term Marketable Securities	118	47
Long-Term Marketable Securities	16	37
Cash	595	598
Cash, cash equivalents and marketable securities, Amortized Cost	746	698
Cash, cash equivalents and marketable securities, Fair Value	746	698
Money Market Funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents	17	11
Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Amortized Cost	134	89
Fair Value	134	89
Cash and Cash Equivalents		5
Short-Term Marketable Securities	118	47
Long-Term Marketable Securities	16	37
Level 2 \| U.S. Agency Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Amortized Cost	23	13
Fair Value	23	13
Short-Term Marketable Securities	21	9
Long-Term Marketable Securities	2	4
Level 2 \| US treasury securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Amortized Cost	8	16
Fair Value	8	16
Cash and Cash Equivalents		4
Short-Term Marketable Securities	8	12
Level 2 \| Certificates of Deposit
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Amortized Cost	16	5
Fair Value	16	5
Short-Term Marketable Securities	15	4
Long-Term Marketable Securities	1	1
Level 2 \| Commercial Paper
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Amortized Cost	5	1
Fair Value	5	1
Short-Term Marketable Securities	5	1
Level 2 \| Corporate Debt Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Amortized Cost	82	54
Fair Value	82	54
Cash and Cash Equivalents		1
Short-Term Marketable Securities	69	21
Long-Term Marketable Securities	$ 13	$ 32

XML 81 R66.htm IDEA: XBRL DOCUMENT

Financial Instruments - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Investments Debt And Equity Securities [Abstract]
Financial instruments including money market funds maturities period	90 days	90 days
Maximum maturities period of long-term marketable securities	3 years	3 years
Minimum maturities period of long-term marketable securities	1 year	1 year
Maximum remaining maturity for short-term marketable securities	12 months	12 months
Minimum maturities of short-term marketable securities	90 days	90 days
Net gain related to forward contracts	$ 2	$ 2	$ 1
Derivative instruments not designated as hedging instruments, description of terms	Our current forward contracts are not designated as hedges and have current maturities of less than 90 days
Cost method investments	$ 14	$ 0

XML 82 R67.htm IDEA: XBRL DOCUMENT

Financial Instruments - Fair Value and Notional Principal Amounts of Outstanding or Unsettled Derivative Instruments (Details) - USD ($)

Dec. 31, 2016

Dec. 31, 2015

Not Designated as Hedging Instrument | Foreign Exchange-forward Contracts

Derivatives Fair Value [Line Items]

Foreign currency exchange-forward contracts

^[1],[2]

$ 6,000,000

$ 25,000,000

[1]

Derivative contracts address foreign currency exchange fluctuations for the Euro versus the U.S. dollar. The Company was entered into two outstanding derivative contracts as of December 31, 2016.

[2]

XML 83 R68.htm IDEA: XBRL DOCUMENT

Property and Equipment, Net - Components of Property and Equipment (Details) - USD ($)
$ in Millions

Dec. 31, 2016

Dec. 31, 2015

Less: accumulated depreciation

$ 371

$ 335

(111)

(88)

Total

260

247

Capitalized Software and Website Development

153

127

Total

Building

^[1]

123

Leasehold Improvements

Computer Equipment and Purchased Software

Furniture, Office Equipment and Other

Chinese Credit Facilities

$ 19

$ 17

[1]

XML 84 R69.htm IDEA: XBRL DOCUMENT

Property and Equipment, Net - Components of Property and Equipment (Parenthetical) (Details)	12 Months Ended
	Dec. 31, 2016
Building
Property Plant And Equipment [Line Items]
Property Plant And Equipment Useful Life	40 years

XML 85 R70.htm IDEA: XBRL DOCUMENT

Property and Equipment, Net - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property Plant And Equipment [Line Items]
Property and equipment, net	$ 260	$ 247
Depreciation of property and equipment, including amortization of internal-use software and website development	69	57	$ 47
Capitalized Software and Website Development
Property Plant And Equipment [Line Items]
Property and equipment, net	86	71
Capitalized computer software and website development costs	62	52
Depreciation of property and equipment, including amortization of internal-use software and website development	46	$ 37	$ 30
Property and equipment, dispositions	$ 45

XML 86 R71.htm IDEA: XBRL DOCUMENT

Goodwill and Intangible Assets, Net - Summary of Changes in Goodwill (Details) - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Goodwill [Line Items]

Beginning balance

$ 732

$ 734

Acquisitions

^[1]

Disposition

(1)

Other adjustments

^[2]

(13)

(18)

Ending balance

736

732

Hotel Segment

Goodwill [Line Items]

442

^[1]

(1)

^[2]

(1)

Ending balance

451

442

Non-Hotel Segment

Goodwill [Line Items]

Beginning balance

290

292

Acquisitions

^[1]

Other adjustments

^[2]

(12)

(18)

Ending balance

$ 285

$ 290

[1]	The additions to goodwill relate to our business acquisitions. See “Note 3— Acquisitions and Dispositions,” for further information.
[2]	Primarily related to impact of changes in foreign currency exchange rates to goodwill.

XML 87 R72.htm IDEA: XBRL DOCUMENT

Goodwill and Intangible Assets, Net - Summary of Intangible Assets Acquired in Business Combinations (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Goodwill And Intangible Assets Disclosure [Abstract]
Intangible assets with definite lives	$ 217	$ 198
Less: accumulated amortization	(80)	(52)
Intangible assets with definite lives, net	137	146
Intangible assets with indefinite lives	30	30
Total	$ 167	$ 176

XML 88 R73.htm IDEA: XBRL DOCUMENT

Goodwill and Intangible Assets, Net - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization expense	$ 32,000,000	$ 36,000,000	$ 18,000,000
Goodwill, Impairment Loss	0	0	0
Indefinite-lived intangible assets, Impairment Loss	$ 0	$ 0	$ 0

XML 89 R74.htm IDEA: XBRL DOCUMENT

Goodwill and Intangible Assets, Net - Components of Intangible Assets with Definite Lives (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Finite Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	5 years 4 months 24 days
Gross Carrying Amount	$ 217	$ 198
Accumulated Amortization	(80)	(52)
Intangible assets with definite lives, net	$ 137	146
Trade Names and Trademarks
Finite Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	7 years 9 months 18 days
Gross Carrying Amount	$ 56	53
Accumulated Amortization	(14)	(9)
Intangible assets with definite lives, net	$ 42	44
Customer Lists and Supplier Relationships
Finite Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	4 years 7 months 6 days
Gross Carrying Amount	$ 84	82
Accumulated Amortization	(31)	(20)
Intangible assets with definite lives, net	$ 53	62
Subscriber Relationships
Finite Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	4 years 9 months 18 days
Gross Carrying Amount	$ 33	29
Accumulated Amortization	(15)	(9)
Intangible assets with definite lives, net	$ 18	20
Technology and Other
Finite Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	3 years 4 months 24 days
Gross Carrying Amount	$ 44	34
Accumulated Amortization	(20)	(14)
Intangible assets with definite lives, net	$ 24	$ 20

XML 90 R75.htm IDEA: XBRL DOCUMENT

Goodwill and Intangible Assets, Net - Summary of Estimated Future Amortization Expense Related to Intangible Assets with Definite Lives (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Goodwill And Intangible Assets Disclosure [Abstract]
2017	$ 31
2018	28
2019	26
2020	21
2021	14
2022 and thereafter	17
Intangible assets with definite lives, net	$ 137	$ 146

XML 91 R76.htm IDEA: XBRL DOCUMENT

Debt - Summary of Total Outstanding Debt (Details) - USD ($)
$ in Millions

Dec. 31, 2016

Dec. 31, 2015

Short-Term Debt:

Short-Term Debt

^[1]

$ 80

$ 1

Long-Term Debt:

Long-Term Debt

200

Long-Term Debt:

$ 91

$ 200

[1]	The weighted-average interest rate on short-term debt was 2.1% as of December 31, 2016.

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

Other Liabilities Noncurrent [Abstract]

XML 92 R77.htm IDEA: XBRL DOCUMENT

Debt - Summary of Total Outstanding Debt (Parenthetical) (Details)	Dec. 31, 2016
Debt Disclosure [Abstract]
Weighted-average interest rate on short-term debt	2.10%

XML 93 R78.htm IDEA: XBRL DOCUMENT

Debt - Two Thousand Eleven Credit Facility - Additional Information (Details) - USD ($)			12 Months Ended
	Jun. 26, 2015	Dec. 20, 2011	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Borrowing capacity under Credit Facility		$ 600,000,000
Total interest and commitments fees			$ 12,000,000	$ 10,000,000	$ 9,000,000
2011 Revolving Credit Facility
Debt Instrument [Line Items]
Borrowing capacity under Credit Facility		$ 200,000,000
Credit facility, expiration period		5 years
Credit facility, maturity date		Dec. 31, 2016
Term Loan
Debt Instrument [Line Items]
Term Loan Facility, principal amount		$ 400,000,000
Period of Term Loan Facility		5 years
Borrowings, maturity date		Dec. 31, 2016
Principal amount repaid	$ 290,000,000
Total interest and commitments fees				$ 3,000,000	$ 6,000,000
Gain (Loss) on Extinguishment of Debt	$ 0

XML 94 R79.htm IDEA: XBRL DOCUMENT

Debt - Two Thousand Fifteen Credit Facility - Additional Information (Details) - USD ($)		12 Months Ended
	Jun. 26, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 20, 2011
Debt Instrument [Line Items]
Borrowing capacity under Credit Facility					$ 600,000,000
Total interest and commitments fees		$ 12,000,000	$ 10,000,000	$ 9,000,000
Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding amount		3,000,000
2015 Credit Facility
Debt Instrument [Line Items]
Total interest and commitments fees		$ 4,000,000	$ 2,000,000
2015 Credit Facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Borrowing capacity under Credit Facility	$ 1,000,000,000
Interest rate description		Any overdue amounts under or in respect of the revolving credit facility not paid when due shall bear interest at (i) in the case of principal, the applicable interest rate plus 2.00% per annum, (ii) in the case of interest denominated in Sterling or Euro, the applicable rate plus 2.00% per annum and (iii) in the case of interest denominated in US dollars, 2.00% per annum plus the Alternate Base Rate plus the interest rate spread applicable to ABR loans.
Basis spread on variable rate		2.00%
Credit facility, maturity date		Jun. 26, 2020
Credit facility, expiration period		5 years
Amount borrowed	290,000,000
Lender fees and debt financing costs	$ 3,000,000
Line of credit facility additional borrowing		$ 101,000,000
Repayments of Debt		$ 210,000,000
Line Of Credit Facility Unused Capacity Commitment Fee Percentage		0.20%
2015 Credit Facility \| Revolving Credit Facility \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate		1.25%
Borrowings, interest rate description		borrowings bear interest at LIBOR plus 125 basis points
Borrowings, interest rate		2.00%
2015 Credit Facility \| Revolving Credit Facility \| GBP or EURO
Debt Instrument [Line Items]
Basis spread on variable rate		2.00%
2015 Credit Facility \| Revolving Credit Facility \| US Dollars
Debt Instrument [Line Items]
Basis spread on variable rate		2.00%
2015 Credit Facility \| Letter of Credit
Debt Instrument [Line Items]
Borrowing capacity under Credit Facility		$ 15,000,000
Letters of credit outstanding amount		3,000,000
2015 Credit Facility \| Borrowings On Same Day Notice
Debt Instrument [Line Items]
Borrowing capacity under Credit Facility		$ 40,000,000

XML 95 R80.htm IDEA: XBRL DOCUMENT

Debt - Two Thousand Sixteen Credit Facility - Additional Information (Details) - USD ($)	1 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2016	Sep. 07, 2016	Dec. 20, 2011
Debt Instrument [Line Items]
Borrowing capacity under Credit Facility				$ 600,000,000
2016 Credit Facility \| Revolving Credit Facility \| Lender
Debt Instrument [Line Items]
Borrowing capacity under Credit Facility			$ 73,000,000
Basis spread on variable rate		1.50%
Credit Facility, description		The Company may borrow from the 2016 Credit Facility in U.S dollars only and we may voluntarily repay any outstanding borrowing at any time without premium or penalty. Any overdue amounts under or in respect of the 2016 Credit Facility not paid when due shall bear interest in the case of principal at the applicable interest rate plus 1.50% per annum.
Amount borrowed	$ 73,000,000
Borrowings, interest rate		1.90%
2016 Credit Facility \| Revolving Credit Facility \| Lender \| Minimum
Debt Instrument [Line Items]
Repayment term of borrowings		1 month
2016 Credit Facility \| Revolving Credit Facility \| Lender \| Maximum
Debt Instrument [Line Items]
Repayment term of borrowings		6 months
2016 Credit Facility \| Revolving Credit Facility \| London Interbank Offered Rate (LIBOR) \| Lender
Debt Instrument [Line Items]
Basis spread on variable rate		1.125%
Borrowings, interest rate description		bear interest at LIBOR plus 112.5 basis points

XML 96 R81.htm IDEA: XBRL DOCUMENT

Debt - Chinese Credit Facilities - Additional Information (Details)	12 Months Ended
	Dec. 31, 2016 USD ($) CreditFacility	Dec. 31, 2016 CNY (¥)	Sep. 30, 2016 USD ($)	Sep. 30, 2016 CNY (¥)	Dec. 31, 2015 USD ($)	Dec. 20, 2011 USD ($)
Debt Instrument [Line Items]
Borrowing capacity under Credit Facility						$ 600,000,000
Chinese Credit Facilities
Debt Instrument [Line Items]
Outstanding borrowings	$ 7,000,000				$ 1,000,000
Number of credit facilities \| CreditFacility	2
Chinese Credit Facilities \| Chinese Credit Facility Boa
Debt Instrument [Line Items]
Outstanding borrowings	$ 0
Borrowing capacity under Credit Facility	$ 30,000,000
Period of credit facility	1 year
Line of credit rate basis	100.00%
Line of credit, interest rate basis	4.35%	4.35%
Interest rate description	Chinese Credit Facility—BOA currently bears interest at a 100% of the People’s Bank of China’s base rate which was 4.35% as of December 31, 2016.
Chinese Credit Facilities \| Chinese Credit Facility JPM
Debt Instrument [Line Items]
Outstanding borrowings	$ 7,000,000
Borrowing capacity under Credit Facility	$ 10,000,000	¥ 70,000,000	$ 18,000,000	¥ 125,000,000
Period of credit facility	1 year
Line of credit rate basis	100.00%
Line of credit, interest rate basis	4.35%	4.35%
Interest rate description	Chinese Credit Facility—JPM currently bears interest at a rate based on 100% of the People’s Bank of China’s base rate, which was 4.35% as of December 31, 2016.

XML 97 R82.htm IDEA: XBRL DOCUMENT

Income Taxes - Summary of Our Domestic and Foreign Income Before Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Domestic	$ 64	$ 67	$ 146
Foreign	87	172	176
Income before income taxes	$ 151	$ 239	$ 322

XML 98 R83.htm IDEA: XBRL DOCUMENT

Income Taxes - Summary of the Components of Our Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current income tax expense:
Federal	$ 38	$ 48	$ 93
State	2	8	14
Foreign	11	22	6
Current income tax expense	51	78	113
Deferred income tax (benefit) expense:
Federal	(12)	(29)	(12)
State	(3)	(2)	(1)
Foreign	(5)	(6)	(4)
Deferred income tax (benefit) expense:	(20)	(37)	(17)
Provision for income taxes	$ 31	$ 41	$ 96

XML 99 R84.htm IDEA: XBRL DOCUMENT

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

XML 100 R85.htm IDEA: XBRL DOCUMENT

Income Taxes - Summary of Deferred Tax Assets and Deferred Tax Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Stock-based compensation	$ 52	$ 40
Net operating loss carryforwards	46	31
Provision for accrued expenses	12	12
Deferred rent	5	5
Lease financing obligation	33	33
Foreign advertising spend	10	8
Deferred expense related to cost-sharing arrangement	30	20
Charitable contribution carryforward	20	24
Other	7	4
Total deferred tax assets	215	177
Less: valuation allowance	(27)	(17)
Net deferred tax assets	188	160
Deferred tax liabilities:
Intangible assets	(83)	(81)
Property and equipment	(28)	(27)
Prepaid expenses	(6)	(4)
Building – corporate headquarters	(31)	(31)
Deferred income related to cost-sharing arrangement	(10)	(7)
Total deferred tax liabilities	(158)	(150)
Net deferred tax asset (liability)	$ 30	$ 10

XML 101 R86.htm IDEA: XBRL DOCUMENT

Income Taxes - Reconciliation of the Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Expense Benefit Continuing Operations Income Tax Reconciliation [Abstract]
Income tax expense at the federal statutory rate of 35%	$ 53	$ 84	$ 113
Foreign rate differential	(35)	(53)	(49)
State income taxes, net of effect of federal tax benefit	4	4	13
Unrecognized tax benefits and related interest	11	12	14
Change in cost-sharing treatment of stock-based compensation	(6)	(13)
Non-deductible transaction costs		1	1
Research tax credit	(10)	(3)	(2)
Stock-based compensation	2	2	2
Change in valuation allowance	9	5	5
Other, net	3	2	(1)
Provision for income taxes	$ 31	$ 41	$ 96

XML 102 R87.htm IDEA: XBRL DOCUMENT

Income Taxes - Reconciliation of the Provision for Income Taxes (Parenthetical) (Details)	12 Months Ended
	Dec. 31, 2016
Income Tax Expense Benefit Continuing Operations Income Tax Reconciliation [Abstract]
Income tax expense at federal statutory rate	35.00%

XML 103 R88.htm IDEA: XBRL DOCUMENT

Income Taxes - Reconciliation of the Beginning and Ending Amount of Gross Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Balance, beginning of year	$ 89	$ 67	$ 36
Increases to tax positions related to the current year	16	15	13
Increases to tax positions related to the prior year	1	7	18
Reductions due to lapsed statute of limitations	(1)
Balance, end of year	$ 105	$ 89	$ 67

XML 104 R89.htm IDEA: XBRL DOCUMENT

Accrued Expenses and Other Current Liabilities - Details of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Payables And Accruals [Abstract]
Accrued employee salary, bonus, and related benefits	$ 53	$ 47
Accrued marketing costs	37	43
Other	37	33
Total	$ 127	$ 123

XML 105 R90.htm IDEA: XBRL DOCUMENT

Other Long-Term Liabilities - Schedule of Other Long-Term Liabilities (Details) - USD ($)
$ in Millions

Dec. 31, 2016

Dec. 31, 2015

Unrecognized tax benefits

^[1]

$ 108

$ 87

Financing obligation, net of current portion

^[2]

Other

^[3]

Total other long term liabilities

$ 210

$ 189

[1]	See “Note 10—Income Taxes” for additional information on our unrecognized tax benefits. Amount includes accrued interest related to this liability.
[2]	Refer to “Note 13 – Commitments and Contingencies,” for additional information on our corporate headquarters lease.
[3]	Amounts primarily consist of long term deferred rent balances related to operating leases for office space.

XML 106 R91.htm IDEA: XBRL DOCUMENT

Commitments and Contingencies - Material Contractual Obligations, Commercial Commitments and Outstanding Debt (Details) $ in Millions	Dec. 31, 2016 USD ($)
Commitment And Contingencies [Line Items]
Property leases, Total	$ 248
Property leases, Less than 1 year	25
Property leases, 1 to 3 years	51
Property leases, 3 to 5 years	52
Property leases, More than 5 years	120
Contractual Obligation, Total	262
Contractual Obligation, Less than 1 year	29
Contractual Obligation, 1 to 3 years	59
Contractual Obligation, 3 to 5 years	54
Contractual Obligation, More than 5 years	120
Expected Interest Payments on 2015 Credit Facility
Commitment And Contingencies [Line Items]
Contractual Obligation, Total	7
Contractual Obligation, Less than 1 year	2
Contractual Obligation, 1 to 3 years	4
Contractual Obligation, 3 to 5 years	1
Expected Commitment Fee Payments on 2015 Credit Facility
Commitment And Contingencies [Line Items]
Contractual Obligation, Total	7
Contractual Obligation, Less than 1 year	2
Contractual Obligation, 1 to 3 years	4
Contractual Obligation, 3 to 5 years	$ 1

XML 107 R92.htm IDEA: XBRL DOCUMENT

Commitments and Contingencies - Material Contractual Obligations, Commercial Commitments and Outstanding Debt (Parenthetical) (Details) - USD ($)
$ in Millions

Dec. 31, 2016

Dec. 31, 2015

Commitments And Contingencies Disclosure [Abstract]

Unrecognized tax benefits

^[1]

$ 108

$ 87

[1]	See “Note 10—Income Taxes” for additional information on our unrecognized tax benefits. Amount includes accrued interest related to this liability.

XML 108 R93.htm IDEA: XBRL DOCUMENT

Commitments and Contingencies - Additional Information (Details) $ in Millions	1 Months Ended	12 Months Ended
	Jun. 30, 2013 ft²	Dec. 31, 2016 USD ($) ft² Location	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Commitment And Contingencies [Line Items]
Rental expense		$ 18	$ 19	$ 17
Lease expiration date		Dec. 01, 2030
Leased area \| ft²	280,000
Total interest and commitments fees		$ 12	10	9
Depreciation		$ 69	57	47
Leased location \| Location		40
Letter of Credit
Commitment And Contingencies [Line Items]
Letters of credit outstanding amount		$ 3
North America And Europe And Asia Pacific
Commitment And Contingencies [Line Items]
Lease expiration date		Jun. 01, 2027
Leased area \| ft²		465,000
Corporate HQ Building
Commitment And Contingencies [Line Items]
Lease expiration date	Dec. 01, 2030
Initial term of Lease	15 years 7 months
Extended Lease Term	5 years
Total interest and commitments fees		$ 7	4	0
Depreciation		3	2	0
Rent expenses		2	$ 1	$ 1
Security deposits		$ 1

XML 109 R94.htm IDEA: XBRL DOCUMENT

Commitments and Contingencies - Future Minimum Commitments Under Our corporate Headquarters Lease and Other Non-Cancelable Operating Leases (Details) $ in Millions	Dec. 31, 2016 USD ($)
Commitment And Contingencies [Line Items]
2017	$ 25
Thereafter	120
Property leases, Total	248
2017	(1)
2018	(1)
2019	(1)
Total minimum lease payments	(3)
2017	25
2018	25
2019	26
2020	26
2021	26
Thereafter	120
Total minimum lease payments	248
Corporate Headquarters Lease
Commitment And Contingencies [Line Items]
2017	9
2018	9
2019	9
2020	9
2021	10
Thereafter	87
Property leases, Total	133
Other Operating Leases
Commitment And Contingencies [Line Items]
2017	17
2018	17
2019	18
2020	17
2021	16
Thereafter	33
Property leases, Total	$ 118

XML 110 R95.htm IDEA: XBRL DOCUMENT

Commitments and Contingencies - Future Minimum Commitments Under Our corporate Headquarters Lease and Other Non-Cancelable Operating Leases (Parenthetical) (Details) - USD ($)
$ in Millions

Dec. 31, 2016

Dec. 31, 2015

Commitments And Contingencies Disclosure [Abstract]

Other long-term liabilities under financial obligation

^[1]

$ 84

[1]	Refer to “Note 13 – Commitments and Contingencies,” for additional information on our corporate headquarters lease.

XML 111 R96.htm IDEA: XBRL DOCUMENT

Employee Benefit Plans - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Automatic enrollment feature pre-tax	6.00%
Maximum employer contribution	50.00%
Maximum employee contributions percentage to receive 50% matching	6.00%
Employer match, percent	3.00%
Contributions vested with the employees	2 years
Contributions to plans	$ 9	$ 7	$ 5
Director
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Common stock reserved for issuance to non-employee directors	1,662
Director \| 2011 Plan
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Common stock reserved for issuance to non-employee directors	100,000
Maximum
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
No of installments for payments upon termination	Payments upon termination will be made in either one lump sum or up to five annual installments, as elected by the eligible director at the time of the deferral election
Pre-tax basis
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Maximum annual employee contribution, percent	50.00%
After-tax basis
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Maximum annual employee contribution, percent	10.00%

XML 112 R97.htm IDEA: XBRL DOCUMENT

Stockholders' Equity - Additional Information (Details)	1 Months Ended		12 Months Ended
Stockholders' Equity - Additional Information (Details)	Dec. 31, 2016 USD ($) Vote / shares $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2016 USD ($) Vote / shares Directors $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 $ / shares shares	Dec. 31, 2013 shares	Feb. 15, 2013 USD ($)
Schedule Of Capitalization Equity [Line Items]
Preferred stock, shares authorized	100,000,000	100,000,000	100,000,000	100,000,000
Preferred stock, par value \| $ / shares	$ 0.001	$ 0.001	$ 0.001	$ 0.001
Preferred stock, shares issued	0	0	0	0
Common stock, shares authorized	1,600,000,000	1,600,000,000	1,600,000,000	1,600,000,000
Common stock, par value \| $ / shares	$ 0.001	$ 0.001	$ 0.001	$ 0.001
Percentage of directors elected by common stock holders	25.00%		25.00%
Number of directors \| Directors			2
Conversion of Class B common stock			100.00%
Common stock, shares issued	134,706,467	133,836,242	134,706,467	133,836,242
Common stock, shares outstanding	131,310,980	132,443,111	131,310,980	132,443,111
Authorized the repurchase of shares of common stock \| $							$ 250,000,000
Repurchase of common stock, shares	4,123,065		2,002,356	0	0
Average price of shares repurchased, common stock \| $ / shares	$ 60.63		$ 52.35
Issuance of treasury stock as charitable contribution, Shares (Note 16)		801,042
Treasury stock, shares	3,395,487	1,393,131	3,395,487	1,393,131
Aggregate cost of treasury stock \| $	$ 197,000,000	$ 92,000,000	$ 197,000,000	$ 92,000,000
Dividend declared on common stock \| $ / shares			$ 0	$ 0	$ 0
Class B Common Stock
Schedule Of Capitalization Equity [Line Items]
Common stock, shares authorized	400,000,000	400,000,000	400,000,000	400,000,000
Common stock, par value \| $ / shares	$ 0.001	$ 0.001	$ 0.001	$ 0.001
Right to voting			10 votes per share
Vote per common stock share \| Vote / shares	10		10
Common stock, shares issued	12,799,999	12,799,999	12,799,999	12,799,999
Common stock, shares outstanding	12,799,999	12,799,999	12,799,999	12,799,999	12,799,999	12,799,999
Common Stock
Schedule Of Capitalization Equity [Line Items]
Common stock, shares authorized	1,600,000,000		1,600,000,000
Common stock, par value \| $ / shares	$ 0.001		$ 0.001
Right to voting			one vote per share
Vote per common stock share \| Vote / shares	1		1
Common stock, shares outstanding	134,706,467	133,836,242	134,706,467	133,836,242	132,315,465	131,537,798

XML 113 R98.htm IDEA: XBRL DOCUMENT

Stockholders' Equity - Accumulated Other Comprehensive Loss Primarily Comprised of Accumulated Foreign Currency Translation (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income Loss [Line Items]
Total accumulated other comprehensive loss	$ (77)	$ (63)
Cumulative Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Total accumulated other comprehensive loss	$ (77)	$ (63)

XML 114 R99.htm IDEA: XBRL DOCUMENT

Related Party Transactions - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Class B Common Stock
Related Party Transaction [Line Items]
Right to voting	10 votes per share
LTRIP
Related Party Transaction [Line Items]
Beneficially ownership of shares of common stock	18,159,752
Percentage taken from outstanding shares of common stock	13.80%
Percentage of beneficially ownership of shares of common stock class B	21.50%
Right to voting	one vote per share
Beneficially ownership of equity securities	56.40%
Related party transactions	$ 0	$ 0	$ 0
LTRIP \| Class B Common Stock
Related Party Transaction [Line Items]
Beneficially ownership of shares of common stock	12,799,999
Percentage taken from outstanding shares of common stock	100.00%
Right to voting	Ten votes per share

XML 115 R100.htm IDEA: XBRL DOCUMENT

Segment and Geographic Information - Additional Information (Details)	12 Months Ended
	Dec. 31, 2016 Segment
Segment Reporting Information [Line Items]
Number of reportable segment	2
Non-Hotel Segment
Segment Reporting Information [Line Items]
Number of operating segments	3

XML 116 R101.htm IDEA: XBRL DOCUMENT

Segment and Geographic Information - Summary of Segment Information (Details) - USD ($)
$ in Millions

3 Months Ended

12 Months Ended

Dec. 31, 2016

Sep. 30, 2016

Jun. 30, 2016

^[1]

Mar. 31, 2016

^[1]

Dec. 31, 2015

Sep. 30, 2015

Jun. 30, 2015

^[1]

Mar. 31, 2015

^[1]

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

$ 316

$ 421

$ 391

$ 352

$ 309

$ 415

$ 405

$ 363

$ 1,480

$ 1,492

$ 1,246

Adjusted EBITDA

^[2]

352

466

^[3]

468

^[3]

Depreciation

(69)

(57)

(47)

(32)

(36)

(18)

Stock-based compensation

(85)

(72)

(63)

Other non-recurring expenses

^[4]

(67)

(2)

Other income (expense), net

(25)

^[5]

166

232

340

(15)

(18)

Income before income taxes

151

239

322

(31)

(41)

(96)

$ 1

$ 55

$ 34

$ 29

$ 3

$ 74

$ 58

$ 63

120

198

226

Non-Hotel Segment

Operating Segments | Hotel Segment

290

229

111

Operating Segments | Non-Hotel Segment

1,190

1,263

1,135

Adjusted EBITDA

^[2]

380

472

^[3]

472

^[3]

Corporate and Unallocated

290

229

111

Adjusted EBITDA

^[2]

(28)

(6)

^[3]

(4)

^[3]

Depreciation

(69)

(57)

(47)

(32)

(36)

(18)

Stock-based compensation

$ (85)

(72)

$ (63)

Other non-recurring expenses

^[4]

(67)

$ (2)

[1]	In the third quarter of 2016, the Company early adopted ASU 2016-09, Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. Refer to “Note 2 – Significant Accounting Policies” for the impact of the adoption of this guidance on the first and second quarters of 2016.
[2]	Includes allocated general and administrative expenses in our Hotel segment of $80 million, $85 million and $87 million; and in our Non-Hotel segment of $38 million, $28 million and $18 million for the years ended December 31, 2016, 2015 and 2014, respectively.
[3]	Hotel segment Adjusted EBITDA includes charitable contributions to the Foundation which were funded in cash of $8 million for the year ended December 31, 2014.
[4]	During the fourth quarter of 2015, we incurred an expense in the amount of $67 million to reflect a non-cash contribution to The TripAdvisor Charitable Foundation (the “Foundation”), which was recorded to general and administrative expense in our consolidated statement of operations. TripAdvisor had historically funded 2% of its annual operating income before amortization and stock-based compensation. TripAdvisor’s pledge agreement provided for an immediate satisfaction of all future annual contributions, by paying an amount equal to eight multiplied by TripAdvisor’s prior year contribution to the Foundation. TripAdvisor exercised this right under its pledge agreement in December 2015. We settled this obligation in treasury shares based on the fair value of our common stock on the date the treasury shares were issued to the Foundation and therefore given the use of stock to settle the obligation, the amount has been excluded from Adjusted EBITDA. TripAdvisor does not expect to make any future contributions to the Foundation.
[5]	During the fourth quarter of 2015, we recognized an incremental $59 million charge over the third quarter of 2015, related to a non-cash charitable contribution recorded to general and administrative expense on our consolidated statement of operations. Refer to “Note 17 – Segments and Geographic Information” for a discussion of this charitable contribution.

XML 117 R102.htm IDEA: XBRL DOCUMENT

Segment and Geographic Information - Summary of Segment Information (Parenthetical) (Details) - USD ($)
$ in Millions

3 Months Ended

12 Months Ended

Dec. 31, 2015

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

General and administrative

^[1]

$ 143

$ 210

$ 128

Percent of funded in annual operating income before amortization and stock-based compensation

^[2]

$ 67

2.00%

TripAdvisor Charitable Foundation

$ 67

Hotel Segment

Amounts of charitable contributions funded

Operating Segments | Hotel Segment

General and administrative

$ 85

Operating Segments | Non-Hotel Segment

General and administrative

$ 38

$ 28

$ 18

[1]

Includes stock-based compensation expense as follows:

[2]

XML 118 R103.htm IDEA: XBRL DOCUMENT

Segment and Geographic Information - Summary of Total Revenue by Source (Details) - USD ($)
$ in Millions

3 Months Ended

12 Months Ended

Dec. 31, 2016

Sep. 30, 2016

Jun. 30, 2016

^[1]

Mar. 31, 2016

^[1]

Dec. 31, 2015

Sep. 30, 2015

Jun. 30, 2015

^[1]

Mar. 31, 2015

^[1]

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Hotel Segment | TripAdvisor-Branded Click-Based and Transaction

$ 316

$ 421

$ 391

$ 352

$ 309

$ 415

$ 405

$ 363

$ 1,480

$ 1,492

$ 1,246

Hotel Segment | TripAdvisor-Branded Display-Based Advertising and Subscription

750

837

764

Hotel Segment | Other Hotel Revenue

282

272

233

158

154

138

Non-Hotel Segment

Revenues From External Customers And Long Lived Assets [Line Items]

$ 290

$ 229

$ 111

[1]

In the third quarter of 2016, the Company early adopted ASU 2016-09, Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. Refer to “Note 2 – Significant Accounting Policies” for the impact of the adoption of this guidance on the first and second quarters of 2016.

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Segment and Geographic Information - Summary of Revenue by Geographic Area (Details) - USD ($)
$ in Millions

3 Months Ended

12 Months Ended

Dec. 31, 2016

Sep. 30, 2016

Jun. 30, 2016

^[1]

Mar. 31, 2016

^[1]

Dec. 31, 2015

Sep. 30, 2015

Jun. 30, 2015

^[1]

Mar. 31, 2015

^[1]

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Revenues From External Customers And Long Lived Assets [Line Items]

$ 316

$ 421

$ 391

$ 352

$ 309

$ 415

$ 405

$ 363

$ 1,480

$ 1,492

$ 1,246

United States

Revenues From External Customers And Long Lived Assets [Line Items]

799

739

593

United Kingdom

Revenues From External Customers And Long Lived Assets [Line Items]

210

215

191

All Other Countries

Other Income And Expenses [Abstract]

$ 471

$ 538

$ 462

[1]

XML 120 R105.htm IDEA: XBRL DOCUMENT

Segment and Geographic Information - Property and Equipment, Net (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Revenues From External Customers And Long Lived Assets [Line Items]
Property and equipment, net	$ 260	$ 247
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Property and equipment, net	222	217
All Other Countries
Revenues From External Customers And Long Lived Assets [Line Items]
Property and equipment, net	$ 38	$ 30

XML 121 R106.htm IDEA: XBRL DOCUMENT

Interest Income and Other, Net - Summary of Interest Income and Other, Net (Details) - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Net loss, realized and unrealized, on foreign currency exchange and foreign currency derivative contracts and other, net

$ (4)

$ (10)

Interest income

Gain on sale of business

^[1]

Total

$ (3)

$ 17

$ (9)

[1]	See “Note 3 – Acquisitions and Dispositions” for information regarding our gain on sale of business in 2015.

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Quarterly Financial Information - Summary of Selected Unaudited Financial Information (Detail) - USD ($)
$ / shares in Units, $ in Millions

3 Months Ended

12 Months Ended

Dec. 31, 2016

Sep. 30, 2016

Jun. 30, 2016

^[1]

Mar. 31, 2016

^[1]

Dec. 31, 2015

Sep. 30, 2015

Jun. 30, 2015

^[1]

Mar. 31, 2015

^[1]

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Year ended December 31, 2016

$ 316

$ 421

$ 391

$ 352

$ 309

$ 415

$ 405

$ 363

$ 1,480

$ 1,492

$ 1,246

Operating income (loss)

(25)

^[2]

166

232

340