10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

ýQUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THESECURITIES EXCHANGE ACT OF 1934 

For the quarterly period ended September 30, 2015

OR

oTRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THESECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission File Number 1-36691

The Priceline Group Inc.

(Exact name of Registrant as specified in its charter) 

Delaware	06-1528493
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification Number)

800 Connecticut Avenue

Norwalk, Connecticut 06854

(address of principal executive offices)

(203) 299-8000

(Registrant's telephone number, including area code)

N/A

(Former name, former address and former fiscal year, if changed, since last report)

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports); and (2) has been subject to such filing requirements for the past 90 days.   Yes ý No o.

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).   Yes ý No o.

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of "large accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act (Check one): 

Large accelerated filer ý	Accelerated filer o
Non-accelerated filer o	Smaller reporting company o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).   Yes o No ý

Number of shares of Common Stock outstanding at November 2, 2015:

Common Stock, par value $0.008 per share	49,783,883
(Class)	(Number of Shares)

The Priceline Group Inc.

Form 10-Q

For the Three Months Ended September 30, 2015

PART I - FINANCIAL INFORMATION
Item 1. Financial Statements	3
Consolidated Balance Sheets (unaudited) at September 30, 2015 and December 31, 2014	3
Consolidated Statements of Operations (unaudited) For the Three and Nine Months Ended September 30, 2015 and    2014	4
Consolidated Statements of Comprehensive Income (unaudited) For the Three and Nine Months Ended September 30, 2015 and 2014	5
Consolidated Statement of Changes in Stockholders' Equity (unaudited) For the Nine Months Ended September 30,    2015	6
Consolidated Statements of Cash Flows (unaudited) For the Nine Months Ended September 30, 2015 and 2014	7
Notes to Unaudited Consolidated Financial Statements	8
Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations	29
Item 3. Quantitative and Qualitative Disclosures About Market Risk	47
Item 4. Controls and Procedures	48
PART II - OTHER INFORMATION
Item 1. Legal Proceedings	49
Item 1A. Risk Factors	49
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	69
Item 6. Exhibits	70
SIGNATURES	71

2

PART I — FINANCIAL INFORMATION

Item 1.  Financial Statements

The Priceline Group Inc.

UNAUDITED CONSOLIDATED BALANCE SHEETS

(In thousands, except share and per share data)

	September 30, 2015			December 31, 2014
ASSETS
Current assets:
Cash and cash equivalents	$	1,841,658		$	3,148,651
Restricted cash	827			843
Short-term investments	1,211,184			1,142,182
Accounts receivable, net of allowance for doubtful accounts of $17,149 and $14,212, respectively	890,532			643,894
Prepaid expenses and other current assets	264,256			178,050
Deferred income taxes	90,500			153,754
Total current assets	4,298,957			5,267,374
Property and equipment, net	257,135			198,953
Intangible assets, net	2,203,270			2,334,761
Goodwill	3,386,519			3,326,474
Long-term investments	6,327,630			3,755,653
Other assets	141,259			57,348
Total assets	$	16,614,770		$	14,940,563
LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
Accounts payable	$	388,528		$	281,480
Accrued expenses and other current liabilities	780,784			600,758
Deferred merchant bookings	413,495			460,558
Convertible debt	—			37,195
Total current liabilities	1,582,807			1,379,991
Deferred income taxes	952,388			1,040,260
Other long-term liabilities	131,474			103,533
Long-term debt	5,421,328			3,849,756
Total liabilities	8,087,997			6,373,540
Convertible debt	—			329
Stockholders' equity:
Common stock, $0.008 par value; authorized 1,000,000,000 shares, 62,026,743 and 61,821,097 shares issued, respectively	482			480
Treasury stock, 11,847,933 and 9,888,024 shares, respectively	(5,073,400		)	(2,737,585		)
Additional paid-in capital	5,097,560			4,923,196
Accumulated earnings	8,687,596			6,640,505
Accumulated other comprehensive loss	(185,465		)	(259,902		)
Total stockholders' equity	8,526,773			8,566,694
Total liabilities and stockholders' equity	$	16,614,770		$	14,940,563

See Notes to Unaudited Consolidated Financial Statements.

3

The Priceline Group Inc.

UNAUDITED CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except per share data)

	Three Months Ended September 30,						Nine Months Ended September 30,
	2015			2014			2015			2014
Agency revenues	$	2,345,673		$	2,099,629		$	5,127,174		$	4,615,169
Merchant revenues	596,503			613,535			1,637,191			1,707,786
Advertising and other revenues	160,725			123,333			459,627			278,919
Total revenues	3,102,901			2,836,497			7,223,992			6,601,874
Cost of revenues	155,619			216,519			511,568			692,429
Gross profit	2,947,282			2,619,978			6,712,424			5,909,445
Operating expenses:
Advertising — Online	801,147			699,814			2,215,181			1,860,317
Advertising — Offline	51,440			71,593			181,325			183,093
Sales and marketing	93,069			86,092			269,536			225,456
Personnel, including stock-based compensation of $58,274, $46,136, $172,446 and $120,108, respectively	305,329			259,471			853,469			675,854
General and administrative	109,706			97,902			308,829			261,950
Information technology	28,830			24,802			81,347			72,068
Depreciation and amortization	69,054			57,599			201,730			136,262
Total operating expenses	1,458,575			1,297,273			4,111,417			3,415,000
Operating income	1,488,707			1,322,705			2,601,007			2,494,445
Other income (expense):
Interest income	14,682			2,490			39,315			5,165
Interest expense	(41,436		)	(22,953		)	(116,462		)	(57,804		)
Foreign currency transactions and other	(5,783		)	3,347			(12,070		)	(4,399		)
Total other income (expense)	(32,537		)	(17,116		)	(89,217		)	(57,038		)
Earnings before income taxes	1,456,170			1,305,589			2,511,790			2,437,407
Income tax expense	259,438			243,336			464,699			467,485
Net income	$	1,196,732		$	1,062,253		$	2,047,091		$	1,969,922
Net income applicable to common stockholders per basic common share	$	23.67		$	20.27		$	39.87		$	37.65
Weighted-average number of basic common shares outstanding	50,550			52,405			51,344			52,319
Net income applicable to common stockholders per diluted common share	$	23.41		$	20.03		$	39.40		$	37.13
Weighted-average number of diluted common shares outstanding	51,130			53,024			51,952			53,048

See Notes to Unaudited Consolidated Financial Statements.

4

The Priceline Group Inc.

UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(In thousands)

	Three Months Ended September 30,						Nine Months Ended September 30,
	2015			2014			2015			2014
Net income	$	1,196,732		$	1,062,253		$	2,047,091		$	1,969,922
Other comprehensive income (loss), net of tax
Foreign currency translation adjustments (1)	(8,043		)	(124,412		)	(78,071		)	(130,997		)
Unrealized gain (loss) on marketable securities (2)	(134,299		)	(26,127		)	152,508			(25,936		)
Comprehensive income	$	1,054,390		$	911,714		$	2,121,528		$	1,812,989

(1) Net of tax benefit of $89 and tax of $41,930 for the three and nine months ended September 30, 2015, respectively, and net of tax of $18,046 and $33,391 for the three and nine months ended September 30, 2014, respectively, associated with net investment hedges. See Note 11.

(2) Net of tax benefit of $2,184 and $3,804 for the three and nine months ended September 30, 2015, respectively, and net of tax benefit of $8,747 and $8,693 for the three and nine months ended September 30, 2014, respectively.

See Notes to Unaudited Consolidated Financial Statements.

5

The Priceline Group Inc.

UNAUDITED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY

FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2015

(In thousands)

	Common Stock			Treasury Stock					Additional Paid-In Capital			Accumulated Earnings		Accumulated Other Comprehensive Loss
	Shares	Amount		Shares		Amount											Total
Balance, December 31, 2014	61,821	$	480	(9,888	)	$	(2,737,585	)	$	4,923,196		$	6,640,505	$	(259,902	)	$	8,566,694
Net income applicable to common stockholders	—	—		—		—			—			2,047,091		—			2,047,091
Foreign currency translation adjustments, net of tax of $41,930	—	—		—		—			—			—		(78,071		)	(78,071		)
Unrealized gain on marketable securities, net of tax benefit of $3,804	—	—		—		—			—			—		152,508			152,508
Reclassification adjustment for convertible debt in mezzanine	—	—		—		—			329			—		—			329
Exercise of stock options and vesting of restricted stock units and performance share units	206	2		—		—			19,137			—		—			19,139
Repurchase of common stock	—	—		(1,960	)	(2,335,815		)	—			—		—			(2,335,815		)
Stock-based compensation and other stock-based payments	—	—		—		—			174,068			—		—			174,068
Conversion of debt	—	—		—		—			(110,105		)	—		—			(110,105		)
Excess tax benefits on stock-based awards	—	—		—		—			90,935			—		—			90,935
Balance, September 30, 2015	62,027	$	482	(11,848	)	$	(5,073,400	)	$	5,097,560		$	8,687,596	$	(185,465	)	$	8,526,773

See Notes to Unaudited Consolidated Financial Statements.

6

The Priceline Group Inc.

UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

	Nine Months Ended September 30,
	2015			2014
OPERATING ACTIVITIES:
Net income	$	2,047,091		$	1,969,922
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	73,520			54,704
Amortization	128,210			81,558
Provision for uncollectible accounts, net	17,242			14,150
Deferred income taxes	(63,675		)	46,451
Stock-based compensation expense and other stock-based payments	174,068			122,120
Amortization of debt issuance costs	5,913			3,818
Amortization of debt discount	49,868			39,079
Loss on early extinguishment of debt	3			6,254
Changes in assets and liabilities:
Accounts receivable	(289,604		)	(353,357		)
Prepaid expenses and other current assets	(86,808		)	(35,341		)
Accounts payable, accrued expenses and other current liabilities	191,881			209,557
Other	(26,550		)	202
Net cash provided by operating activities	2,221,159			2,159,117
INVESTING ACTIVITIES:
Purchase of investments	(5,597,897		)	(7,327,635		)
Proceeds from sale of investments	3,180,981			9,703,032
Additions to property and equipment	(126,637		)	(90,725		)
Acquisitions and other investments, net of cash acquired	(135,664		)	(2,496,084		)
Proceeds from foreign currency contracts	453,818			14,354
Payments on foreign currency contracts	(448,640		)	(94,661		)
Change in restricted cash	—			9,309
Net cash used in investing activities	(2,674,039		)	(282,410		)
FINANCING ACTIVITIES:
Proceeds from revolving credit facility	—			995,000
Payments related to revolving credit facility	—			(995,000		)
Proceeds from the issuance of long-term debt	1,619,951			2,282,217
Payment of debt issuance costs	(13,507		)	(16,241		)
Payments related to conversion of senior notes	(147,629		)	(121,925		)
Repurchase of common stock	(2,267,384		)	(245,456		)
Payments of contingent consideration	(10,700		)	—
Proceeds from exercise of stock options	19,139			12,434
Excess tax benefits on stock-based awards	90,935			14,139
Net cash (used in) provided by financing activities	(709,195		)	1,925,168
Effect of exchange rate changes on cash and cash equivalents	(144,918		)	(48,145		)
Net (decrease) increase in cash and cash equivalents	(1,306,993		)	3,753,730
Cash and cash equivalents, beginning of period	3,148,651			1,289,994
Cash and cash equivalents, end of period	$	1,841,658		$	5,043,724
SUPPLEMENTAL CASH FLOW INFORMATION:
Cash paid during the period for income taxes	$	499,421		$	412,185
Cash paid during the period for interest	$	50,400		$	14,531
Non-cash investing activity for contingent consideration	$	9,170		$	13,310
Non-cash financing activity for acquisitions	$	—		$	13,752

See Notes to Unaudited Consolidated Financial Statements.

7

The Priceline Group Inc.

Notes to Unaudited Consolidated Financial Statements

1.BASIS OF PRESENTATION

Management of The Priceline Group Inc. (the "Company") is responsible for the Unaudited Consolidated Financial Statements included in this document.  The Unaudited Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") and include all normal and recurring adjustments that management of the Company considers necessary for a fair presentation of its financial position and operating results.  The Company prepared the Unaudited Consolidated Financial Statements following the requirements of the Securities and Exchange Commission for interim reporting.  As permitted under those rules, the Company condensed or omitted certain footnotes or other financial information that are normally required by GAAP for annual financial statements.  These statements should be read in combination with the Consolidated Financial Statements in the Company's Annual Report on Form 10-K for the year ended December 31, 2014.

The Unaudited Consolidated Financial Statements include the accounts of the Company and its wholly-owned subsidiaries, including its primary brands of Booking.com, priceline.com, KAYAK, agoda.com, rentalcars.com and, since its acquisition on July 24, 2014, OpenTable, Inc. ("OpenTable"). All inter-company accounts and transactions have been eliminated in consolidation.  The functional currency of the Company's foreign subsidiaries is generally the respective local currency. Assets and liabilities are translated into U.S. Dollars at the rate of exchange existing at the balance sheet date.  Income statement amounts are translated at the average exchange rates for the period.  Translation gains and losses are included as a component of "Accumulated other comprehensive loss" in the accompanying Unaudited Consolidated Balance Sheets.  Foreign currency transaction gains and losses are included in the Unaudited Consolidated Statements of Operations in "Foreign currency transactions and other."

Revenues, expenses, assets and liabilities can vary during each quarter of the year.  Therefore, the results and trends in these interim financial statements may not be the same as those for the full year.

Recent Accounting Pronouncements

In September 2015, the Financial Accounting Standard (“FASB”) issued a new accounting update which simplifies the accounting for measurement-period adjustments to provisional amounts recognized in a business combination. Under this new guidance, an acquirer must recognize these adjustments in the reporting period in which the adjustment amounts are determined. The new accounting guidance also requires an acquirer to present separately on the face of the income statement, or disclose in the notes, the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to provision amounts had been recognized as of the acquisition date. This update is effective for fiscal years beginning after December 15, 2015, including interim periods within those fiscal years. Early adoption is permitted for financial statements that have not been issued. The Company plans to adopt this new accounting standard in the fourth quarter of 2015.

In April 2015, the FASB issued a new accounting update which changes the presentation of debt issuance costs in our financial statements. Under this new guidance, debt issuance costs, excluding costs associated with a revolving credit facility, will be presented in our balance sheets as a direct deduction from the related debt liability rather than as an asset. Unamortized debt issuance costs at September 30, 2015 were $31.1 million. This accounting change is consistent with the current presentation under U.S. GAAP for debt discounts and it also converges the guidance under U.S. GAAP with that in the International Financial Reporting Standards ("IFRS"). Debt issuance costs will reduce the proceeds from debt borrowings in our cash flow statement instead of being presented as a separate caption in the financing section of that statement. Amortization of debt issuance costs will continue to be reported as interest expense in our income statements. This accounting update does not affect the current accounting guidance for the recognition and measurement of debt issuance costs. This update is effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is allowed for all entities for financial statements that have not been previously issued. The Company plans to adopt this new accounting standard in the fourth quarter of 2015.

In April 2015, the FASB issued a new accounting update which requires an entity that enters into a cloud computing arrangement to determine if the arrangement contains a software license. The accounting update cites software as a service, platform as a service, infrastructure as a service and other similar hosting arrangements as examples of cloud computing arrangements. A software license arrangement exists if both of the following criteria are met: (1) the customer has a contractual right to take possession of the underlying software without significant penalty and (2) it is feasible for the customer to run the software on their own hardware or to contract with another party unrelated to the vendor to run the software. If the

8

arrangement meets both of these criteria, the customer would need to identify what portion of the cost relates to purchasing the software and what portion relates to paying for the service of hosting the software. The purchased software would be accounted for using the internal-use software guidance and the service costs would be accounted for as an operating expense. If the arrangement does not meet both of the criteria, the cost is an operating expense for a service contract. The guidance in this update does not change the accounting for a service contract. The update is effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is allowed for all entities. The Company is currently evaluating the impact on its consolidated financial statements of adopting this new guidance.

In May 2014, the FASB and the International Accounting Standards Board ("IASB") issued a new accounting standard on the recognition of revenue from contracts with customers that is designed to create greater comparability for financial statement users across industries and jurisdictions. The core principle of the standard is that an "entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services." Additionally, the new guidance specified the accounting for some costs to obtain or fulfill a contract with a customer. The new standard will also require enhanced disclosures. The accounting standard is effective for public entities for annual and interim periods beginning after December 15, 2016. In July 2015, the FASB agreed to defer the effective date of the new revenue standard to annual periods beginning after December 15, 2017 with early adoption permitted as of the original effective date. The Company is currently evaluating the impact on its consolidated financial statements of adopting this new guidance.

In April 2014, the FASB issued an accounting update which amended the definition of a discontinued operation. The new definition limits discontinued operations reporting to disposals of components of an entity that represent strategic shifts that have or will have a major effect on an entity's operations and financial results. The new definition includes an acquired business that is classified as held for sale at the date of acquisition. The accounting update requires new disclosures of both discontinued operations and a disposal of an individually significant component of an entity. The accounting update is effective for annual and interim periods beginning on or after December 15, 2014. The Company adopted this update in the first quarter of 2015 and this accounting update did not have an impact on the Company's consolidated financial statements.

2.STOCK-BASED EMPLOYEE COMPENSATION

Stock-based compensation expense included in personnel expenses in the Unaudited Consolidated Statements of Operations was approximately $58.3 million and $46.1 million for the three months ended September 30, 2015 and 2014, respectively, and $172.4 million and $120.1 million for the nine months ended September 30, 2015 and 2014, respectively.

Stock-based compensation is recognized in the financial statements based upon fair value. Fair value is recognized as expense on a straight-line basis, net of estimated forfeitures, over the employee's requisite service period. The fair value of performance share units and restricted stock units is determined based on the number of units granted and the quoted price of the Company's common stock as of the grant date. Stock-based compensation related to performance share units reflects the estimated probable outcome at the end of the performance period. The fair value of employee stock options assumed in acquisitions was determined using the Black-Scholes model and the market value of the Company's common stock at the respective acquisition date.

Restricted Stock Units and Performance Share Units

The following table summarizes the activity of restricted stock units and performance share units ("share-based awards") during the nine months ended September 30, 2015: 

Share-Based Awards	Shares		Weighted-Average Grant Date Fair Value
Unvested at December 31, 2014	570,315			$	912.26
Granted	185,741			$	1,239.56
Vested	(153,478	)		$	742.70
Performance Share Units Adjustment	(339	)		$	1,171.04
Forfeited	(19,879	)		$	1,078.86
Unvested at September 30, 2015	582,360			$	1,058.84

9

As of September 30, 2015, there was $327.6 million of total future compensation cost related to unvested share-based awards to be recognized over a weighted-average period of 2.0 years.

During the nine months ended September 30, 2015, the Company made broad-based grants of 78,418 restricted stock units that generally vest after three years, subject to certain exceptions for terminations other than for "cause," for "good reason" or on account of death or disability. These share-based awards had a total grant date fair value of $97.4 million based on a weighted-average grant date fair value per share of $1,242.70.

In addition, during the nine months ended September 30, 2015, the Company granted 107,323 performance share units to executives and certain other employees.  The performance share units had a total grant date fair value of $132.8 million based upon a weighted-average grant date fair value per share of $1,237.28.  The performance share units are payable in shares of the Company's common stock upon vesting. Subject to certain exceptions for terminations other than for "cause," for "good reason" or on account of death or disability, recipients of these performance share units generally must continue their service through the requisite service period in order to receive any shares.  Stock-based compensation related to performance share units reflects the estimated probable outcome at the end of the performance period.  The actual number of shares to be issued on the vesting date will be determined upon completion of the performance period, which, for most of these performance share units, ends December 31, 2017, assuming there is no accelerated vesting for, among other things, a termination of employment under certain circumstances.  As of September 30, 2015, the estimated number of probable shares to be issued is a total of 105,982 shares.  If the maximum performance thresholds are met at the end of the performance period, a maximum number of 257,727 total shares could be issued.  If the minimum performance thresholds are not met, 52,368 shares would be issued at the end of the performance period.

2014 Performance Share Units

During the year ended December 31, 2014, the Company granted 72,277 performance share units with a grant date fair value of $96.1 million, based on a weighted-average grant date fair value per share of $1,329.11. The actual number of shares to be issued will be determined upon completion of the performance period which generally ends December 31, 2016.

At September 30, 2015, there were 69,767 unvested 2014 performance share units outstanding, net of performance share units that were forfeited or vested since the grant date. As of September 30, 2015, the number of shares estimated to be issued pursuant to these performance share units at the end of the performance period is a total of 109,124 shares. If the maximum thresholds are met at the end of the performance period, a maximum of 141,062 total shares could be issued pursuant to these performance share units. If the minimum performance thresholds are not met, 48,810 shares would be issued at the end of the performance period.

2013 Performance Share Units

During the year ended December 31, 2013, the Company granted 104,865 performance share units with a grant date fair value of $74.4 million, based on a weighted-average grant date fair value per share of $709.74.  The actual number of shares to be issued will be determined upon completion of the performance period which ends December 31, 2015.

At September 30, 2015, there were 98,677 unvested 2013 performance share units outstanding, net of performance share units that were forfeited or vested since the grant date.  As of September 30, 2015, the number of shares estimated to be issued pursuant to these performance share units at the end of the performance period is a total of 185,318 shares.  If the maximum performance thresholds are met at the end of the performance period, a maximum of 214,397 total shares could be issued pursuant to these performance share units. If the minimum performance thresholds are not met, 38,508 shares would be issued at the end of the performance period.

10

Stock Options

The following table summarizes the activity for the nine months ended September 30, 2015 for employee stock options: 

Employee Stock Options	Number of Shares		Weighted-Average Exercise Price			Aggregate  Intrinsic Value (in thousands)			Weighted-Average Remaining Contractual Term (in years)
Balance, December 31, 2014	146,385			$	380.05		$	111,277	6.5
Assumed in acquisitions	1,422			$	230.37
Exercised	(49,213	)		$	354.88
Forfeited	(4,103	)		$	527.59
Balance, September 30, 2015	94,491			$	384.44		$	80,546	5.8
Vested and exercisable as of September 30, 2015	69,473			$	342.20		$	62,155	5.3
Vested and exercisable as of September 30, 2015 and unvested expected to vest thereafter, net of estimated forfeitures	93,852			$	384.28		$	80,016	5.8

The aggregate intrinsic value of employee stock options exercised during the nine months ended September 30, 2015 was $42.8 million compared to $43.7 million for the nine months ended September 30, 2014. During the nine months ended September 30, 2015, stock options assumed in acquisitions vested for 29,527 shares of common stock with an acquisition-date fair value of $19.9 million, compared to 26,765 shares of common stock vested for stock options assumed in acquisitions with an acquisition-date fair value of $13.5 million for the nine months ended September 30, 2014.

For the three and nine months ended September 30, 2015, the Company recorded stock-based compensation expense related to employee stock options of $4.8 million and $19.8 million, respectively, compared to $8.1 million and $14.9 million for the three and nine months ended September 30, 2014, respectively. Employee stock options assumed in acquisitions during the nine months ended September 30, 2015 had a total acquisition-date fair value of $1.4 million based on a weighted-average acquisition date fair value of $1,015.81 per share. As of September 30, 2015, there was $15.1 million of total future compensation costs related to unvested employee stock options to be recognized over a weighted-average period of 1.3 years.

3.NET INCOME PER SHARE

The Company computes basic net income per share by dividing net income by the weighted-average number of common shares outstanding during the period.  Diluted net income per share is based upon the weighted-average number of common and common equivalent shares outstanding during the period.

Common equivalent shares related to stock options, restricted stock units and performance share units are calculated using the treasury stock method.  Performance share units are included in the weighted-average common equivalent shares based on the number of shares that would be issued if the end of the reporting period were the end of the performance period, if the result would be dilutive.

The Company's convertible notes have net share settlement features requiring the Company upon conversion to settle the principal amount of the debt for cash and the conversion premium for cash or shares of the Company's common stock, at the Company's option.  The convertible notes are included in the calculation of diluted net income per share if their inclusion is dilutive under the treasury stock method.

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A reconciliation of the weighted-average number of shares outstanding used in calculating diluted earnings per share is as follows (in thousands): 

	Three Months Ended September 30,		Nine Months Ended September 30,
	2015	2014	2015	2014
Weighted-average number of basic common shares outstanding	50,550	52,405	51,344	52,319
Weighted-average dilutive stock options, restricted stock units and performance share units	326	272	367	308
Assumed conversion of Convertible Senior Notes	254	347	241	421
Weighted-average number of diluted common and common equivalent shares outstanding	51,130	53,024	51,952	53,048
Anti-dilutive potential common shares	2,627	2,628	2,641	2,577

Anti-dilutive potential common shares for both the three and nine months ended September 30, 2015 include approximately 2.1 million shares that could be issued under the Company's outstanding convertible notes.  Under the treasury stock method, the convertible notes will generally have an anti-dilutive impact on net income per share if the conversion price for the convertible notes exceed the Company's average stock price.

4.INVESTMENTS

The following table summarizes, by major security type, the Company's investments as of September 30, 2015 (in thousands): 

	Cost		Gross  Unrealized  Gains		Gross  Unrealized Losses			Fair Value
Available-for-sale securities:
Short-term investments:
Foreign government securities	$	71,834	$	2	$	(4	)	$	71,832
U.S. government securities	638,131		263		—			638,394
Corporate debt securities	497,498		134		(405		)	497,227
Commercial paper	1,716		—		—			1,716
U.S. government agency securities	2,012		3		—			2,015
Total short-term investments	$	1,211,191	$	402	$	(409	)	$	1,211,184
Long-term investments:
Foreign government securities	$	485,783	$	381	$	(190	)	$	485,974
U.S. government securities	773,651		4,563		—			778,214
Corporate debt securities	3,749,053		6,175		(15,001		)	3,740,227
U.S. municipal securities	1,089		6		—			1,095
Ctrip convertible debt securities	750,000		—		(50,525		)	699,475
Ctrip equity securities	584,099		38,546		—			622,645
Total long-term investments	$	6,343,675	$	49,671	$	(65,716	)	$	6,327,630

The Company's investment policy seeks to preserve capital and maintain sufficient liquidity to meet operational and other needs of the business.  As of September 30, 2015, the weighted-average life of the Company’s fixed income investment portfolio, excluding the Company's investment in Ctrip convertible debt securities, was approximately 1.6 years with an average credit quality of A1/A+.

The Company invests in foreign government securities with high credit quality. As of September 30, 2015, investments in foreign government securities principally included debt securities issued by the governments of the Netherlands, France, Belgium, Austria and Sweden. 

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On May 26, 2015 and August 7, 2014, the Company invested $250 million and $500 million, respectively, in five-year senior convertible notes issued at par by Ctrip.com International Ltd. ("Ctrip"). Additionally, as of September 30, 2015, the Company had invested $584.1 million of its international cash, which includes $22.1 million settled in October 2015, in Ctrip American Depositary Shares ("ADSs"). As a result, the Unaudited Consolidated Balance Sheet at September 30, 2015 includes $22.1 million in "Accrued expenses and other current liabilities" for these unsettled ADS purchases. The convertible debt and equity securities of Ctrip have been marked-to-market in accordance with the accounting guidance for available-for-sale securities and at September 30, 2015 show an unrealized loss of $50.5 million and an unrealized gain of $38.5 million, respectively. In connection with the purchase of the convertible note in August 2014, Ctrip granted the Company the right to appoint an observer to Ctrip's board of directors and permission to acquire Ctrip shares (through the acquisition of Ctrip ADSs in the open market) over the twelve months following the purchase date, so that combined with ADSs issuable upon conversion of this note, the Company could hold up to 10% of Ctrip's outstanding equity. In connection with the purchase of the convertible note in May 2015, Ctrip granted the Company permission to acquire additional Ctrip shares (through the acquisition of Ctrip ADSs in the open market) over the twelve months following the purchase date, so that combined with ADSs issuable upon conversion of the two notes, the Company could hold up to an aggregate of 15% of Ctrip's outstanding equity.

The following table summarizes, by major security type, the Company's investments as of December 31, 2014 (in thousands): 

	Cost		Gross  Unrealized  Gains		Gross  Unrealized Losses			Fair Value
Available-for-sale securities:
Short-term investments:
Foreign government securities	$	52,524	$	—	$	(34	)	$	52,490
U.S. government securities	364,276		24		(34		)	364,266
Corporate debt securities	582,160		15		(652		)	581,523
Commercial paper	39,092		—		—			39,092
U.S. government agency securities	104,829		—		(18		)	104,811
Total short-term investments	$	1,142,881	$	39	$	(738	)	$	1,142,182
Long-term investments:
Foreign government securities	$	12,707	$	—	$	(36	)	$	12,671
U.S. government securities	557,130		80		(762		)	556,448
Corporate debt securities	2,332,030		2,299		(5,296		)	2,329,033
U.S. government agency securities	95,108		97		(111		)	95,094
U.S. municipal securities	1,114		—		(12		)	1,102
Ctrip convertible debt securities	500,000		—		(74,039		)	425,961
Ctrip equity securities	421,930		—		(86,586		)	335,344
Total long-term investments	$	3,920,019	$	2,476	$	(166,842	)	$	3,755,653

The Company has classified its investments as available-for-sale securities. These securities are carried at estimated fair value with the aggregate unrealized gains and losses related to these investments, net of taxes, reflected as a part of "Accumulated other comprehensive loss" in the Unaudited Consolidated Balance Sheets. Classification as short-term or long-term investment is based upon the maturity of the debt securities.

The Company recognized $0.3 million of net realized losses and $3.1 million of net realized gains related to investments for the three and nine months ended September 30, 2015, respectively. There were no significant realized gains or losses related to investments for the three and nine months ended September 30, 2014.

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5.FAIR VALUE MEASUREMENTS

Financial assets and liabilities carried at fair value as of September 30, 2015 are classified in the tables below in the categories described below (in thousands): 

	Level 1		Level 2		Total
ASSETS:
Cash equivalents:
U.S. Treasury money market funds	$	76,282	$	—	$	76,282
Foreign government securities	—		298,375		298,375
U.S. government securities	—		525,381		525,381
Commercial paper	—		20,910		20,910
Short-term investments:
Foreign government securities	—		71,832		71,832
U.S. government securities	—		638,394		638,394
Corporate debt securities	—		497,227		497,227
Commercial paper	—		1,716		1,716
U.S. government agency securities	—		2,015		2,015
Foreign exchange derivatives	—		358		358
Long-term investments:
Foreign government securities	—		485,974		485,974
U.S. government securities	—		778,214		778,214
Corporate debt securities	—		3,740,227		3,740,227
U.S. municipal securities	—		1,095		1,095
Ctrip convertible debt securities	—		699,475		699,475
Ctrip equity securities	622,645		—		622,645
Total assets at fair value	$	698,927	$	7,761,193	$	8,460,120

	Level 1		Level 2		Total
LIABILITIES:
Foreign exchange derivatives	$	—	$	317	$	317

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Financial assets and liabilities carried at fair value as of December 31, 2014 are classified in the tables below in the categories described below (in thousands):

	Level 1		Level 2		Total
ASSETS:
Cash equivalents:
U.S. Treasury money market funds	$	155,608	$	—	$	155,608
Foreign government securities	—		974,855		974,855
U.S. government securities	—		676,503		676,503
Corporate debt securities	—		45,340		45,340
Commercial paper	—		382,544		382,544
U.S. government agency securities	—		10,000		10,000
Short-term investments:
Foreign government securities	—		52,490		52,490
U.S. government securities	—		364,266		364,266
Corporate debt securities	—		581,523		581,523
Commercial paper	—		39,092		39,092
U.S. government agency securities	—		104,811		104,811
Foreign exchange derivatives	—		336		336
Long-term investments:
Foreign government securities	—		12,671		12,671
U.S. government securities	—		556,448		556,448
Corporate debt securities	—		2,329,033		2,329,033
U.S. government agency securities	—		95,094		95,094
U.S. municipal securities	—		1,102		1,102
Ctrip convertible debt securities	—		425,961		425,961
Ctrip equity securities	335,344		—		335,344
Total assets at fair value	$	490,952	$	6,652,069	$	7,143,021

	Level 1		Level 2		Total
LIABILITIES:
Foreign exchange derivatives	$	—	$	129	$	129

There are three levels of inputs to measure fair value.  The definition of each input is described below:

Level 1: Quoted prices in active markets that are accessible by the Company at the measurement date for

identical assets and liabilities.

Level 2: Inputs that are observable, either directly or indirectly.  Such prices may be based upon quoted

prices for identical or comparable securities in active markets or inputs not quoted on active

markets, but corroborated by market data.

Level 3: Unobservable inputs are used when little or no market data is available.

Investments in corporate debt securities, U.S. and foreign government securities, commercial paper, government agency securities, convertible debt securities and municipal securities are considered "Level 2" valuations because the Company has access to quoted prices, but does not have visibility to the volume and frequency of trading for all of these investments.  For the Company's investments, a market approach is used for recurring fair value measurements and the valuation techniques use inputs that are observable, or can be corroborated by observable data, in an active marketplace. 

The Company's derivative instruments are valued using pricing models.  Pricing models take into account the contract terms as well as multiple inputs where applicable, such as interest rate yield curves, option volatility and currency rates. Derivatives are considered "Level 2" fair value measurements. The Company's derivative instruments are typically short term in nature.

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As of September 30, 2015 and December 31, 2014, the Company's cash consisted of bank deposits and cash held in investment accounts.  Other financial assets and liabilities, including restricted cash, accounts receivable, accounts payable, accrued expenses and deferred merchant bookings are carried at cost which approximates their fair value because of the short-term nature of these items.  As of September 30, 2015, the Company held investments in equity securities of private companies of approximately $64 million and these investments are accounted for under the cost method (see Note 7). See Note 4 for information on the carrying value of investments and Note 8 for the estimated fair value of the Company's outstanding Senior Notes. See Note 12 for the Company's contingent liabilities associated with business acquisitions.

In the normal course of business, the Company is exposed to the impact of foreign currency fluctuations.  The Company limits these risks by following established risk management policies and procedures, including the use of derivatives.  The Company does not use derivatives for trading or speculative purposes.  All derivative instruments are recognized in the Unaudited Consolidated Balance Sheets at fair value.  Gains and losses resulting from changes in the fair value of derivative instruments that are not designated as hedging instruments for accounting purposes are recognized in the Unaudited Consolidated Statements of Operations in the period that the changes occur.  Changes in the fair value of derivatives designated as net investment hedges are recorded as currency translation adjustments to offset a portion of the translation adjustment from Euro-denominated net assets held by certain subsidiaries and are recognized in the Unaudited Consolidated Balance Sheets in "Accumulated other comprehensive loss."

Derivatives Not Designated as Hedging Instruments — The Company is exposed to adverse movements in currency exchange rates as the operating results of its international operations are translated from local currency into U.S. Dollars upon consolidation.  The Company's derivative contracts principally address short-term foreign exchange fluctuations for the Euro and British Pound Sterling versus the U.S. Dollar.  As of September 30, 2015 and December 31, 2014, there were no outstanding derivative contracts related to foreign currency translation risk.  Foreign exchange losses of $6.4 million and $6.2 million for the three and nine months ended September 30, 2015, respectively, compared to foreign exchange gains of $8.3 million and $12.5 million for the three and nine months ended September 30, 2014, respectively, are recorded in "Foreign currency transactions and other" in the Unaudited Consolidated Statements of Operations.

The Company also enters into foreign currency forward contracts to hedge its exposure to the impact of movements in currency exchange rates on its transactional balances denominated in currencies other than the functional currency. Foreign exchange derivatives outstanding as of September 30, 2015 associated with foreign currency transaction risks resulted in a net asset of $0.1 million, with an asset in the amount of $0.4 million recorded in "Prepaid expenses and other current assets" and a liability in the amount of $0.3 million recorded in "Accrued expenses and other current liabilities" in the Unaudited Consolidated Balance Sheet. Foreign exchange derivatives outstanding as of December 31, 2014 associated with foreign exchange transactions resulted in a net asset of $0.2 million, with an asset in the amount of $0.3 million recorded in "Prepaid expenses and other current assets" and a liability in the amount of $0.1 million recorded in "Accrued expenses and other current liabilities" in the Unaudited Consolidated Balance Sheet.  Derivatives associated with these transaction risks resulted in foreign exchange gains of $13.4 million and foreign exchange losses of $12.6 million for the three and nine months ended September 30, 2015, respectively, compared to foreign exchange losses of $15.0 million and $19.0 million for the three and nine months ended September 30, 2014, respectively. These mark-to-market adjustments on the derivative contracts, offset by the effect of changes in currency exchange rates on transactions denominated in currencies other than the functional currency, resulted in net gains of $3.4 million and net losses of $4.2 million for the three months ended September 30, 2015 and 2014, respectively, and net losses of $2.9 million and $7.6 million for the nine months ended September 30, 2015 and 2014, respectively. The net impacts related to these derivatives are recorded in "Foreign currency transactions and other" in the Unaudited Consolidated Statements of Operations.

The settlement of derivative contracts not designated as hedging instruments resulted in net cash outflows of $20.1 million and $10.0 million for the nine months ended September 30, 2015 and 2014, respectively, and are reported within "Net cash provided by operating activities" in the Unaudited Consolidated Statements of Cash Flows.

Derivatives Designated as Hedging Instruments — The Company had no foreign currency forward contracts designated as hedges of its net investment in a foreign subsidiary outstanding as of September 30, 2015 or December 31, 2014. A net cash inflow of $5.2 million for the nine months ended September 30, 2015 compared to a net cash outflow of $80.3 million for the nine months ended September 30, 2014 related to foreign currency forward contracts designated as hedges of the Company's net investment in a foreign subsidiary are reported within "Net cash used in investing activities" in the Unaudited Consolidated Statements of Cash Flows.

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6.INTANGIBLE ASSETS AND GOODWILL

The Company's intangible assets at September 30, 2015 and December 31, 2014 consisted of the following (in thousands): 

	September 30, 2015							December 31, 2014
	Gross  Carrying  Amount		Accumulated Amortization			Net  Carrying  Amount		Gross  Carrying  Amount		Accumulated Amortization			Net  Carrying  Amount		Amortization Period	Weighted  Average  Useful Life
Supply and distribution agreements	$	826,860	$	(218,654	)	$	608,206	$	842,642	$	(188,441	)	$	654,201	10 - 20 years	16 years
Technology	111,483		(56,813		)	54,670		108,987		(43,746		)	65,241		1 - 5 years	5 years
Patents	1,623		(1,553		)	70		1,623		(1,524		)	99		15 years	15 years
Internet domain names	38,764		(19,910		)	18,854		41,652		(16,895		)	24,757		2 - 20 years	8 years
Trade names	1,672,122		(163,262		)	1,508,860		1,674,218		(100,850		)	1,573,368		5 - 20 years	20 years
Non-compete agreements	21,900		(9,290		)	12,610		21,000		(3,908		)	17,092		3 - 4 years	3 years
Other	135		(135		)	—		141		(138		)	3
Total intangible assets	$	2,672,887	$	(469,617	)	$	2,203,270	$	2,690,263	$	(355,502	)	$	2,334,761

Intangible assets with determinable lives are amortized on a straight-line basis.  Intangible asset amortization expense was approximately $42.2 million and $128.2 million for the three and nine months ended September 30, 2015, respectively, and $35.8 million and $81.6 million for the three and nine months ended September 30, 2014, respectively.

The amortization expense for intangible assets for the remainder of 2015, the annual expense for the next five years, and the expense thereafter is expected to be as follows (in thousands): 

2015	$	42,107
2016	167,413
2017	160,088
2018	141,499
2019	131,380
2020	124,089
Thereafter	1,436,694
	$	2,203,270

The change in goodwill for the nine months ended September 30, 2015 consists of the following (in thousands): 

Balance at December 31, 2014	$	3,326,474
Acquisitions	77,720
Currency translation adjustments	(17,675		)
Balance at September 30, 2015	$	3,386,519

A substantial portion of the intangibles and goodwill relates to the acquisition of OpenTable in July 2014 and KAYAK in May 2013.

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As of September 30, 2015, the Company performed its annual goodwill impairment testing and concluded that there was no impairment of goodwill. Other than OpenTable, the fair values of the Company's reporting units substantially exceeded their respective carrying values as of September 30, 2015.

As of September 30, 2015, OpenTable’s carrying value was $2.5 billion, of which $1.5 billion relates to goodwill. The fair value of OpenTable slightly exceeded its carrying value as of September 30, 2015. OpenTable’s fair value was estimated using a combination of standard valuation techniques, including an income approach (discounted cash flows) and market approaches (EBITDA multiples of comparable publicly-traded companies and for precedent transactions).

7.OTHER ASSETS

Other assets at September 30, 2015 and December 31, 2014 consisted of the following (in thousands): 

	September 30, 2015		December 31, 2014
Deferred debt issuance costs	$	34,827	$	27,204
Security deposits	14,168		12,368
Deferred tax assets	9,912		8,548
Investments	63,926		588
Other	18,426		8,640
Total	$	141,259	$	57,348

Deferred debt issuance costs arose from (i) the $1.0 billion aggregate principal amount of 1.0% Convertible Senior Notes, due March 15, 2018, issued in March 2012; (ii) the $1.0 billion aggregate principal amount of 0.35% Convertible Senior Notes, due June 15, 2020, issued in May 2013; (iii) the $1.0 billion aggregate principal amount of 0.9% Convertible Senior Notes, due September 15, 2021, issued in August 2014; (iv) the 1.0 billion Euro aggregate principal amount of 2.375% Senior Notes, due September 23, 2024, issued in September 2014; (v) the 1.0 billion Euro aggregate principal amount of 1.8% Senior Notes, due March 3, 2027, issued in March 2015, (vi) the $500 million aggregate principal amount of 3.65% Senior Notes, due March 15, 2025, issued in March 2015, and (vii) the $2.0 billion revolving credit facility entered into in June 2015.  Included in the December 31, 2014 balance were debt issuance costs related to the $575.0 million aggregate principal amount of 1.25% Convertible Senior Notes, due March 15, 2015, issued in March 2010 and the $1.0 billion revolving credit facility entered into in October 2011. Deferred debt issuance costs are being amortized using the effective interest rate method and the period of amortization was determined at inception of the related debt agreements based upon the stated maturity dates. The termination of the revolving credit facility entered into in October 2011 resulted in a charge to interest expense of$1.0 million in June 2015 to write off the remaining unamortized debt issuance costs (see Note 8).

As of September 30, 2015, the Company held investments in equity securities of private companies of approximately $64 million, and these investments are accounted for under the cost method. As of September 30, 2015, the Company did not estimate the fair value of these cost-method investments because there were no identified events or changes in circumstances that may have a significant adverse impact on the carrying values of these investments.

8.DEBT

Revolving Credit Facility

In June 2015, the Company entered into a $2.0 billionfive-year unsecured revolving credit facility with a group of lenders. Borrowings under the revolving credit facility will bear interest, at the Company’s option, at a rate per annum equal to either (i) the adjusted LIBOR for the interest period in effect for such borrowing plus an applicable margin ranging from 0.875% to 1.50%; or (ii) the greatest of (a) Bank of America, N.A.'s prime lending rate, (b) the federal funds rate plus 0.50%, and (c) an adjusted LIBOR for an interest period of one month plus 1.00%, plus an applicable margin ranging from 0.00% to 0.50%. Undrawn balances available under the revolving credit facility are subject to commitment fees at the applicable rate ranging from 0.085% to 0.20%.

The revolving credit facility provides for the issuance of up to $70.0 million of letters of credit as well as borrowings of up to $50.0 million on same-day notice, referred to as swingline loans. Borrowings under the revolving credit facility may be made in U.S. Dollars, Euros, British Pounds Sterling and any other foreign currency agreed to by the lenders. The proceeds

18

of loans made under the facility will be used for working capital and general corporate purposes, which could include acquisitions or share repurchases. As of September 30, 2015, there were no borrowings outstanding and approximately $2.5 million of letters of credit issued under this new facility. The Company paid $4.0 million in debt issuance costs related to the revolving credit facility during the nine months ended September 30, 2015.

Upon entering into this new revolving credit facility, the Company terminated its $1.0 billionfive-year revolving credit facility entered into in October 2011 and recognized interest expense of $1.0 million related to the write-off of the remaining unamortized debt issuance costs. As of December 31, 2014, there were no borrowings outstanding and approximately $4.0 million of letters of credit issued under this revolving credit facility.

Outstanding Debt

Outstanding debt as of September 30, 2015 consisted of the following (in thousands): 

September 30, 2015	Outstanding Principal  Amount		Unamortized Debt Discount			Carrying Value
Long-term debt:
1.0% Convertible Senior Notes due March 2018	$	1,000,000	$	(57,851	)	$	942,149
0.35% Convertible Senior Notes due June 2020	1,000,000		(120,355		)	879,645
0.9% Convertible Senior Notes due September 2021	1,000,000		(122,277		)	877,723
2.375% (€1 Billion) Senior Notes due September 2024	1,116,445		(9,506		)	1,106,939
3.65% Senior Notes due March 2025	500,000		(1,231		)	498,769
1.8% (€1 Billion) Senior Notes due March 2027	1,116,445		(342		)	1,116,103
Total long-term debt	$	5,732,890	$	(311,562	)	$	5,421,328

Outstanding debt as of December 31, 2014 consisted of the following (in thousands): 

December 31, 2014	Outstanding Principal  Amount		Unamortized Debt Discount			Carrying Value
Short-term debt:
1.25% Convertible Senior Notes due March 2015	$	37,524	$	(329	)	$	37,195
Long-term debt:
1.0% Convertible Senior Notes due March 2018	$	1,000,000	$	(74,834	)	$	925,166
0.35% Convertible Senior Notes due June 2020	1,000,000		(138,114		)	861,886
0.9% Convertible Senior Notes due September 2021	1,000,000		(136,299		)	863,701
2.375% (€1 Billion) Senior Notes due September 2024	1,210,068		(11,065		)	1,199,003
Total long-term debt	$	4,210,068	$	(360,312	)	$	3,849,756

The 2015 Notes (as defined below) became convertible on December 15, 2014, at the option of the holders, and remained convertible until the scheduled trading day immediately preceding the maturity date of March 15, 2015. Since these notes were convertible at the option of the holders and the principal amount is required to be paid in cash, the difference between the principal amount and the carrying value was reflected as convertible debt in the mezzanine section in the Company's Unaudited Consolidated Balance Sheet as of December 31, 2014. Therefore, with respect to the 2015 Notes, the Company reclassified the unamortized debt discount for these 1.25% Notes in the amount of $0.3 million before tax as of December 31, 2014, from additional paid-in capital to convertible debt in the mezzanine section in the Company's Unaudited Consolidated Balance Sheets.

Based upon the closing price of the Company's common stock for the prescribed measurement period during the three months ended September 30, 2015 and December 31, 2014, the respective contingent conversion thresholds of the 2018 Notes (as defined below), the 2020 Notes (as defined below) and the 2021 Notes (as defined below) were not exceeded and therefore these notes are reported as non-current liabilities in the Unaudited Consolidated Balance Sheets.

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Fair Value of Debt

As of September 30, 2015 and December 31, 2014, the estimated market value of all outstanding Senior Notes was approximately $6.1 billion and $4.8 billion, respectively, and was considered a "Level 2" fair value measurement (see Note 5). Fair value was estimated based upon actual trades at the end of the reporting period or the most recent trade available as well as the Company's stock price at the end of the reporting period.  A substantial portion of the market value of the Company's debt in excess of the outstanding principal amount relates to the conversion premium on the Convertible Senior Notes.

Convertible Debt

If the note holders exercise their option to convert, the Company delivers cash to repay the principal amount of the notes and delivers shares of common stock or cash, at its option, to satisfy the conversion value in excess of the principal amount.  In cases where holders decide to convert prior to the maturity date, the Company charges the proportionate amount of remaining debt issuance costs to interest expense.

Description of Senior Convertible Notes

In August 2014, the Company issued in a private placement $1.0 billion aggregate principal amount of Convertible Senior Notes due September 15, 2021, with an interest rate of 0.9% (the "2021 Notes"). The Company paid $11.0 million in debt issuance costs during the year ended December 31, 2014, related to this offering. The 2021 Notes are convertible, subject to certain conditions, into the Company's common stock at a conversion price of approximately $2,055.50 per share. The 2021 Notes are convertible, at the option of the holder, prior to September 15, 2021, upon the occurrence of specific events, including but not limited to a change in control, or if the closing sales price of the Company's common stock for at least 20 trading days in the period of 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter is more than 150% of the applicable conversion price in effect for the notes on the last trading day of the immediately preceding quarter. In the event that all or substantially all of the Company's common stock is acquired on or prior to the maturity of the 2021 Notes in a transaction in which the consideration paid to holders of the Company's common stock consists of all or substantially all cash, the Company would be required to make additional payments in the form of additional shares of common stock to the holders of the 2021 Notes in an aggregate value ranging from $0 to approximately $375 million depending upon the date of the transaction and the then current stock price of the Company. As of June 15, 2021, holders will have the right to convert all or any portion of the 2021 Notes. The 2021 Notes may not be redeemed by the Company prior to maturity.  The holders may require the Company to repurchase the 2021 Notes for cash in certain circumstances.  Interest on the 2021 Notes is payable on March 15 and September 15 of each year.

In May 2013, the Company issued in a private placement $1.0 billion aggregate principal amount of Convertible Senior Notes due June 15, 2020, with an interest rate of 0.35% (the "2020 Notes"). The 2020 Notes were issued with an initial discount of $20.0 million. The Company paid $1.0 million in debt issuance costs during the year ended December 31, 2013, related to this offering. The 2020 Notes are convertible, subject to certain conditions, into the Company's common stock at a conversion price of approximately $1,315.10 per share. The 2020 Notes are convertible, at the option of the holder, prior to June 15, 2020, upon the occurrence of specific events, including but not limited to a change in control, or if the closing sales price of the Company's common stock for at least 20 trading days in the period of 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter is more than 150% of the applicable conversion price in effect for the notes on the last trading day of the immediately preceding quarter. In the event that all or substantially all of the Company's common stock is acquired on or prior to the maturity of the 2020 Notes in a transaction in which the consideration paid to holders of the Company's common stock consists of all or substantially all cash, the Company would be required to make additional payments in the form of additional shares of common stock to the holders of the 2020 Notes in an aggregate value ranging from $0 to approximately $397 million depending upon the date of the transaction and the then current stock price of the Company. As of March 15, 2020, holders will have the right to convert all or any portion of the 2020 Notes. The 2020 Notes may not be redeemed by the Company prior to maturity.  The holders may require the Company to repurchase the 2020 Notes for cash in certain circumstances.  Interest on the 2020 Notes is payable on June 15 and December 15 of each year.

In March 2012, the Company issued in a private placement $1.0 billion aggregate principal amount of Convertible Senior Notes due March 15, 2018, with an interest rate of 1.0% (the "2018 Notes"). The Company paid $20.9 million in debt issuance costs during the year ended December 31, 2012, related to this offering. The 2018 Notes are convertible, subject to certain conditions, into the Company's common stock at a conversion price of approximately $944.61 per share. The 2018 Notes are convertible, at the option of the holder, prior to March 15, 2018, upon the occurrence of specific events, including but not limited to a change in control, or if the closing sales price of the Company's common stock for at least 20 trading days in the period of 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter is more than 150% of the applicable conversion price in effect for the notes on the last trading day of the immediately preceding

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quarter. In the event that all or substantially all of the Company's common stock is acquired on or prior to the maturity of the 2018 Notes in a transaction in which the consideration paid to holders of the Company's common stock consists of all or substantially all cash, the Company would be required to make additional payments in the form of additional shares of common stock to the holders of the 2018 Notes in aggregate value ranging from $0 to approximately $344 million depending upon the date of the transaction and the then current stock price of the Company. As of December 15, 2017, holders will have the right to convert all or any portion of the 2018 Notes. The 2018 Notes may not be redeemed by the Company prior to maturity.  The holders may require the Company to repurchase the 2018 Notes for cash in certain circumstances.  Interest on the 2018 Notes is payable on March 15 and September 15 of each year.

In March 2010, the Company issued in a private placement $575.0 million aggregate principal amount of Convertible Senior Notes due March 15, 2015, with an interest rate of 1.25% (the "2015 Notes").  The 2015 Notes were convertible, subject to certain conditions, into the Company's common stock at a conversion price of approximately $303.06 per share.  For the three months ended March 31, 2015, in connection with the maturity or conversion prior to maturity of the remaining outstanding 1.25% Convertible Senior Notes, the Company paid $37.5 million to satisfy the aggregate principal amount due and paid an additional $110.1 million in satisfaction of the conversion value in excess of the principal amount, which was charged to additional paid-in capital. During the nine months ended September 30, 2014, the Company delivered cash of $121.9 million to repay the aggregate principal amount and issued 299,657 shares of its common stock in satisfaction of the conversion value in excess of the principal amount associated with 1.25% Convertible Senior Notes due March 2015 that were converted prior to maturity.

Accounting guidance requires that cash-settled convertible debt, such as the Company's Convertible Senior Notes, be separated into debt and equity components at issuance and each be assigned a value.  The value assigned to the debt component is the estimated fair value, as of the issuance date, of a similar bond without the conversion feature.  The difference between the bond cash proceeds and this estimated fair value, representing the value assigned to the equity component, is recorded as a debt discount.  Debt discount is amortized using the effective interest method over the period from the origination date through the stated maturity date.  The Company estimated the straight debt borrowing rates at debt origination to be 3.50% for the 2018 Notes, 3.13% for the 2020 Notes and 3.18% for the 2021 Notes.  The yield to maturity was estimated at an at-market coupon priced at par.

Debt discount after tax of $82.5 million ($142.9 million before tax) and financing costs associated with the equity component of convertible debt of $1.6 million after tax were recorded in additional paid-in capital related to the 2021 Notes at December 31, 2014. Debt discount after tax of $92.4 million ($154.3 million before tax) and financing costs associated with the equity component of convertible debt of $0.1 million after tax were recorded in additional paid-in capital related to the 2020 Notes at June 30, 2013. Debt discount after tax of $80.9 million ($135.2 million before tax) and financing costs associated with the equity component of convertible debt of $2.8 million after tax were recorded in additional paid-in capital related to the 2018 Notes at March 31, 2012. Debt discount after tax of $69.1 million ($115.2 million before tax) and financing costs associated with the equity component of convertible debt of $1.6 million after tax were recorded in additional paid-in-capital related to the 2015 Notes at March 31, 2010.

For the three months ended September 30, 2015 and 2014, the Company recognized interest expense of $23.1 million and $20.4 million, respectively, related to convertible notes.  Interest expense related to convertible notes for the three months ended September 30, 2015 and 2014 was comprised of $5.6 million and $4.6 million, respectively, for the contractual coupon interest, $16.4 million and $14.8 million, respectively, related to the amortization of debt discount, and $1.1 million and $1.0 million, respectively, related to the amortization of debt issuance costs.  For the three months ended September 30, 2015 and 2014, included in the amortization of debt discount mentioned above was $0.7 million of original issuance discount for each period related to the 2020 Notes. The remaining period for amortization of debt discount and debt issuance costs is the stated maturity dates for the respective debt. The weighted-average effective interest rate for the three months ended September 30, 2015 and 2014 was 3.4% and 3.6%, respectively, related to convertible notes.

For the nine months ended September 30, 2015 and 2014, the Company recognized interest expense of $69.4 million and $53.9 million, respectively, related to convertible notes.  Interest expense related to convertible notes for the nine months ended September 30, 2015 and 2014 was comprised of $17.0 million and $11.6 million, respectively, for the contractual coupon interest, $49.1 million and $39.1 million, respectively, related to the amortization of debt discount, and $3.3 million and $3.2 million, respectively, for each period related to the amortization of debt issuance costs.  For the nine months ended September 30, 2015 and 2014, included in the amortization of debt discount mentioned above was $2.0 million of original issuance discount for each period related to the 2020 Notes. In addition, the Company incurred interest expense of $0.5 million related to debt conversions during the nine months ended September 30, 2014. The remaining period for amortization of debt discount and debt issuance costs is the stated maturity dates for the respective debt. The weighted-average effective interest rate for the nine months ended September 30, 2015 and 2014 was 3.4% and 3.6%, respectively, related to convertible notes.

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In addition, if the Company's convertible debt is redeemed or converted prior to maturity, a gain or loss on extinguishment is recognized.  The gain or loss is the difference between the fair value of the debt component immediately prior to extinguishment and its carrying value.  To estimate the fair value of the debt at the conversion date, the Company estimated its straight debt borrowing rate, considering its credit rating and straight debt of comparable corporate issuers.  For the three and nine months ended September 30, 2014, the Company recognized a non-cash loss of $0.2 million ($0.1 million after tax) and $6.3 million ($3.8 million after tax), respectively, in "Foreign currency transactions and other" in the Unaudited Consolidated Statements of Operations in connection with the conversion of the 2015 Notes.

Other Long-term Debt

In March 2015, the Company issued Senior Notes due March 15, 2025, with an interest rate of 3.65% (the "2025 Notes") for an aggregate principal amount of $500 million. The 2025 Notes were issued with an initial discount of $1.3 million. In addition, the Company paid $3.2 million in debt issuance costs during the nine months ended September 30, 2015. Interest on the 2025 Notes is payable semi-annually on March 15 and September 15, beginning September 15, 2015.

In March 2015, the Company issued Senior Notes due March 3, 2027, with an interest rate of 1.8% (the "2027 Notes") for an aggregate principal amount of 1.0 billion Euros. The 2027 Notes were issued with an initial discount of 0.3 million Euros. In addition, the Company paid $6.3 million in debt issuance costs during the nine months ended September 30, 2015. Interest on the 2027 Notes is payable annually on March 3, beginning March 3, 2016. Subject to certain limited exceptions, all payments of interest and principal for the 2027 Notes will be made in Euros.

In September 2014, the Company issued Senior Notes due September 23, 2024, with an interest rate of 2.375% (the "2024 Notes") for an aggregate principal amount of 1.0 billion Euros. The 2024 Notes were issued with an initial discount of 9.4 million Euros. In addition, the Company paid $6.5 million in debt issuance costs during the year ended December 31, 2014. Interest on the 2024 Notes is payable annually on September 23, beginning September 23, 2015. Subject to certain limited exceptions, all payments of interest and principal for the 2024 Notes will be made in Euros.

The aggregate principal value of the 2024 Notes and 2027 Notes and accrued interest thereon are designated as a hedge of the Company's net investment in certain Euro functional currency subsidiaries. The foreign currency transaction gains or losses on these liabilities are measured based upon changes in spot rates and are recorded in "Accumulated other comprehensive loss." The Euro-denominated net assets of these subsidiaries are translated into U.S. Dollars at each balance sheet date, with effects of foreign currency changes also reported in "Accumulated other comprehensive loss." Since the notional amount of the recorded Euro-denominated debt and related interest are not greater than the notional amount of the Company's net investment, the Company does not expect to incur any ineffectiveness on this hedge.

Debt discount is amortized using the effective interest method over the period from the origination date through the stated maturity date.  The Company estimated the effective interest rates at debt origination to be 2.48% for the 2024 Notes, 1.80% for the 2027 Notes and 3.68% for the 2025 Notes.

For the three and nine months ended September 30, 2015, the Company recognized interest expense of $16.8 million and $43.0 million, respectively, related to other long-term debt which was comprised of $16.2 million and $41.3 million, respectively, for the contractual coupon interest, $0.2 million and $0.7 million, respectively, related to the amortization of debt discount and $0.4 million and $1.0 million, respectively, related to the amortization of debt issuance costs. The remaining period for amortization of debt discount and debt issuance costs is the stated maturity date for the debt.

9.TREASURY STOCK

In the first quarter of 2015, the Company's Board of Directors authorized the repurchase of up to $3.0 billion of the Company's common stock, in addition to amounts previously authorized. In the nine months ended September 30, 2015, the Company repurchased 1,897,446 shares of its common stock in the open market for an aggregate cost of $2.3 billion, which included stock repurchases in September 2015 of 57,241 shares for an aggregate cost of $68.4 million that were settled in October 2015. As a result, the Unaudited Consolidated Balance Sheet at September 30, 2015 includes $68.4 million in "Accrued expenses and other current liabilities" for these unsettled stock repurchases. The Unaudited Consolidated Statement of Cash Flows for the nine months ended September 30, 2015 excludes the impact of these stock repurchases settled in October 2015.

As of September 30, 2015, the Company had a remaining authorization of $748.8 million to purchase its common stock. During the period from October 1, 2015 through October 30, 2015, the Company repurchased 397,038 additional shares

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for an aggregate cost of $519.6 million. The Company may make additional repurchases of shares under its stock repurchase programs, depending on prevailing market conditions, alternate uses of capital and other factors. Whether and when to initiate and/or complete any purchase of common stock and the amount of common stock purchased will be determined at the Company's discretion.

The Board of Directors has given the Company the general authorization to repurchase shares of its common stock to satisfy employee withholding tax obligations related to stock-based compensation.  The Company repurchased 62,463 shares and 73,502 shares at aggregate costs of $77.4 million and $98.2 million in the nine months ended September 30, 2015 and 2014, respectively, to satisfy employee withholding taxes related to stock-based compensation.

As of September 30, 2015, there were approximately 11.8 million shares of the Company's common stock held in treasury.

10.INCOME TAXES

Income tax expense consists of U.S. and international income taxes, determined using an estimate of the Company's annual effective tax rate.  A deferred tax liability is recognized for all taxable temporary differences, and a deferred tax asset is recognized for all deductible temporary differences and operating loss and tax credit carryforwards.  A valuation allowance is provided when it is more likely than not that some portion or all of a deferred tax asset will not be realized.

The Company recognizes income tax expense based upon the applicable tax rates and tax laws of the countries in which the income is generated.  During the three and nine months ended September 30, 2015 and 2014, a substantial majority of the Company's international sourced income was generated in the Netherlands.  Income tax expense for the three and nine months ended September 30, 2015 and 2014 differs from the expected tax expense at the U.S. federal statutory rate of 35%, primarily due to lower international tax rates, partially offset by U.S. state income taxes and certain non-deductible expenses.

According to Dutch corporate income tax law, income generated from qualifying innovative activities is taxed at a rate of 5% ("Innovation Box Tax") rather than the Dutch statutory rate of 25%. A portion of Booking.com's earnings during the three and nine months ended September 30, 2015 and 2014 qualifies for Innovation Box Tax treatment, which had a significant beneficial impact on the Company's effective tax rate for those periods.

The Company has significant deferred tax assets, resulting principally from U.S. net operating loss carryforwards ("NOLs"). The amount of NOLs available for the Company's use is limited by Section 382 of the U.S. Internal Revenue Code ("IRC Section 382"). At December 31, 2014, after considering the impact of IRC Section 382, the Company had approximately $1.2 billion of available NOLs for U.S. federal income tax purposes, comprised of $22 million of NOLs generated from operating losses and approximately $1.2 billion of NOLs generated from equity-related transactions, including equity-based compensation and stock warrants. The NOLs mainly expire from December 31, 2019 to December 31, 2021. The utilization of these NOLs is dependent upon the Company's ability to generate sufficient future taxable income in the United States. Pursuant to accounting guidance, tax benefits related to equity deductions will be recognized by crediting additional paid-in capital when they are realized by reducing the Company's current income tax liability. The Company periodically evaluates the likelihood of the realization of deferred tax assets, and reduces the carrying amount of these deferred tax assets by a valuation allowance to the extent it believes a portion will not be realized. The Company considers many factors when assessing the likelihood of future realization of the deferred tax assets, including its recent cumulative earnings experience by taxing jurisdiction, expectations of future income, tax planning strategies, the carryforward periods available for tax reporting purposes, and other relevant factors.

It is the practice and current intention of the Company to reinvest the earnings of its international subsidiaries in those operations, therefore, at September 30, 2015, no provision had been made for U.S. taxes on international earnings.  At December 31, 2014, international earnings intended to be indefinitely reinvested outside of the United States amounted to approximately $7.3 billion.  It is not practicable to determine the U.S. federal income tax liability that would be payable if such earnings were not indefinitely reinvested.

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11.ACCUMULATED OTHER COMPREHENSIVE LOSS

The table below provides the balances for each classification of accumulated other comprehensive loss as of September 30, 2015 and December 31, 2014 (in thousands): 

	September 30, 2015			December 31, 2014
Foreign currency translation adjustments, net of tax (1)	$	(180,829	)	$	(102,758	)
Net unrealized gain (loss) on marketable securities, net of tax (2)	(4,636		)	(157,144		)
Accumulated other comprehensive loss	$	(185,465	)	$	(259,902	)

(1) Foreign currency translation adjustments, net of tax, includes net losses from fair value adjustments at September 30, 2015 of $34.8 million after tax ($52.6 million before tax) and net losses from fair value adjustments at December 31, 2014 of $37.8 million after tax ($57.8 million before tax) associated with derivatives designated as net investment hedges (see Note 5).

Foreign currency translation adjustments, net of tax, includes foreign currency transaction gains at September 30, 2015 of $106.7 million after tax ($181.9 million before tax) associated with the Company's 2024 Notes and 2027 Notes and foreign currency transaction gains at December 31, 2014 of $48.3 million after tax ($83.8 million before tax) associated with the Company's 2024 Notes. The 2024 Notes and 2027 Notes are Euro-denominated debt and are designated as hedges of certain of the Company's Euro-denominated net assets (see Note 8).

The remaining balance in currency translation adjustments excludes income taxes as a result of the Company's current intention to indefinitely reinvest the earnings of its international subsidiaries outside of the United States.

(2) The unrealized loss before tax at September 30, 2015 was $16.0 million, of which unrealized gains of $30.6 million were exempt from tax under the Dutch participation exemption and unrealized losses of $46.6 million were taxable. The unrealized loss before tax at December 31, 2014 was $164.7 million, of which unrealized losses of $134.6 million were exempt from tax under the Dutch participation exemption and unrealized losses of $30.1 million were taxable.

12.COMMITMENTS AND CONTINGENCIES

Competition Reviews

Certain business practices common to the online travel industry have become the subject of investigations by various national competition authorities ("NCAs"), particularly in Europe. Investigations related to Booking.com's contractual parity arrangements with accommodation providers, sometimes also referred to as "most favored nation" or "MFN" provisions, were initiated by NCAs in France, Germany, Italy, Austria, Sweden, Ireland and Switzerland, and a number of other NCAs are looking at these issues.  The investigations primarily relate to whether Booking.com's price parity provisions are anti-competitive because they require accommodation providers to provide Booking.com with room rates that are at least as low as those offered to other online travel companies ("OTCs") or through the accommodation provider's website.

On April 21, 2015, the French, Italian and Swedish NCAs, working in close cooperation with the European Commission, announced that they had accepted "commitments" offered by Booking.com to resolve and close the investigations in France, Italy and Sweden. Under the commitments, Booking.com replaced its existing price parity agreements with accommodation providers with "narrow" price parity agreements. Under a "narrow" price parity agreement, subject to certain exceptions, an accommodation provider is still required to offer the same or better rates on Booking.com as it offers to a consumer directly online, but it is no longer required to offer the same or better rates on Booking.com as it offers to other OTCs. The commitments also allow an accommodation provider to, among other things, offer different terms and conditions (e.g., free WiFi) and availability to consumers that book with on-line travel companies that offer lower rates of commission or other benefits, offer lower rates to consumers that book through off-line channels and continue to discount through, among other things, accommodation loyalty programs, as long as those rates are not published or marketed online. The commitments apply to accommodations in France, Italy and Sweden and were effective on July 1, 2015. The foregoing description is a summary only and is qualified in its entirety by reference to the commitments published by the NCAs on April 21, 2015. On October 6, 2015 the Irish NCA closed its investigation on the basis of identical commitments to those given to the French, Italian and Swedish NCAs.

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The Company is in ongoing discussions with various NCAs in other countries regarding their concerns. On July 1, 2015, Booking.com voluntarily implemented the commitments given to the French, Italian and Swedish NCAs throughout the European Economic Area and Switzerland and is working with certain other European NCAs towards closing their investigations or inquiries. A number of additional NCAs in the European Economic Area have now closed their investigations following Booking.com's implementation of the commitments in their jurisdictions. However, the Company is currently unable to predict the impact the implementation of these commitments throughout the European Economic Area and Switzerland will have on Booking.com's business or on the on-going investigations in other European countries, or on industry practice more generally. In particular, the Company notes that the German NCA has alleged that any parity requirements (narrow or otherwise) are anti-competitive and has required Hotel Reservation Service to remove its rate parity clause from its contracts with hotels (Hotel Reservation Service's initial appeal was denied). The Company expects the German NCA to impose similar requirements on Booking.com. The Company is unable to predict how the investigations in the other countries will ultimately be resolved. Possible outcomes include requiring Booking.com to amend or remove its rate parity clause from its contracts with accommodation providers in those jurisdictions and/or the imposition of fines. An Italian hotel association has filed an appeal in respect of the Italian NCA's decision to accept the commitments by Booking.com, and the Company is unable to predict the outcome of that appeal.

In August 2015, French legislation known as the "Macron Law" became effective. Among other things, the Macron Law makes price parity agreements illegal, including the "narrow" price parity agreements agreed to by the French NCA in April 2015. The law also requires that agreements between OTCs and hotels comply with a French contract form called a "mandatory contract." It is not yet clear what, if any, action can be taken in response to the law or how it may affect the Company's business in France. Similar legislation prohibiting "narrow" price parity agreements has been proposed in Italy and currently is awaiting action by the Italian Senate. It is not yet clear whether the legislation will be enacted or, if it is, how it may affect the Company's business in Italy.

Prior to the initiation of the investigations described above, Booking.com, along with certain other parties, was the subject of an investigation by competition authorities in the United Kingdom related to alleged agreements or concerted practices between hotels and Booking.com and at least one other OTC that restricted Booking.com's (and the other OTC's) ability to discount hotel room reservations and that this was a form of resale price maintenance. The investigation was initially closed based on commitments by the parties, including Booking.com, that provided that (a) while hotels would continue to be able to set retail prices for hotel room reservations on OTC websites, OTCs would have the flexibility to discount a hotel's retail price up to the OTC's commission, but only to members of closed groups (a concept that is defined in the commitments) who have previously made a reservation through the OTC and (b) rate parity clauses would not apply to rates provided by other OTCs or hotels to members of their closed groups so long as the discounted rate is not made public. The U.K. Competition Appeal Tribunal ("CAT") vacated the resolution of the investigation on appeal and remitted the matter to the U.K. Competition and Markets Authority ("CMA") for reconsideration in September 2014. The CMA did not appeal the CAT's decision, and on September 16, 2015 the CMA closed its investigation on administrative grounds, making no findings as to the legality of the discounting restrictions.

To the extent that regulatory authorities impose fines on the Company or require changes to the Company's business practices or to those currently common to the industry, the Company's business, competitive position and results of operations could be materially and adversely affected. Negative publicity regarding any such investigations could adversely affect the Company's brands and therefore its market share and results of operations. Further, the Macron Law and any similar legislation enacted by other countries, or a decision by the German NCA to prohibit any price parity requirements, could have a material adverse effect on the Company's business and its results of operations, in particular if consumers use its services to shop for accommodation reservations but make their reservations directly with an accommodation provider.

Litigation Related to Travel Transaction Taxes

The Company and certain third-party OTCs are currently involved in approximately forty lawsuits, including certified and putative class actions, brought by or against U.S. states, cities and counties over issues involving the payment of travel transaction taxes (e.g., hotel occupancy taxes, excise taxes, sales taxes, etc.).  The Company's subsidiaries priceline.com LLC, Lowestfare.com LLC and Travelweb LLC are named in some but not all of these cases.  Generally, the complaints allege, among other things, that the OTCs violated each jurisdiction's respective relevant travel transaction tax ordinance with respect to the charge and remittance of amounts to cover taxes under each law.  The complaints typically seek compensatory damages, disgorgement, penalties available by law, attorneys' fees and other relief.  In addition, several U.S. jurisdictions have initiated audit proceedings, issued proposed tax assessments or started inquiries relating to the payment of travel transaction taxes.  Additional state and local jurisdictions are likely to assert that the Company is subject to travel transaction taxes and could seek to collect such taxes, retroactively and/or prospectively.

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With respect to the principal claims in these matters, the Company believes that the laws at issue do not apply to the services it provides, namely the facilitation of travel reservations, and, therefore, that it does not owe the taxes that are claimed to be owed.  Rather, the Company believes that the laws at issue generally impose travel transaction taxes on entities that own, operate or control hotels (or similar businesses) or furnish or provide hotel rooms or similar accommodations or other travel services.  In addition, in many of these matters, the taxing jurisdictions have asserted claims for "conversion" - essentially, that the Company has collected a tax and wrongfully "pocketed" those tax dollars - a claim that the Company believes is without basis and has contested.  The taxing jurisdictions that are currently involved in litigation and other proceedings with the Company, and that may be involved in future proceedings, have asserted contrary positions and will likely continue to do so.  From time to time, the Company has found it expedient to settle, and may in the future agree to settle, claims pending in these matters without conceding that the claims at issue are meritorious or that the claimed taxes are in fact due to be paid.

In connection with some of these tax audits and assessments, the Company may be required to pay any assessed taxes, which amounts may be substantial, prior to being allowed to contest the assessments and the applicability of the laws in judicial proceedings.  This requirement is commonly referred to as "pay to play" or "pay first."  For example, the City and County of San Francisco assessed the Company approximately $3.4 million (an amount that includes interest and penalties) relating to hotel occupancy taxes, which the Company paid in July 2009, and issued a second assessment totaling approximately $2.7 million, which the Company paid in January 2013.  Payment of these amounts, if any, is not an admission that the Company believes it is subject to such taxes.  In the San Francisco action, for example, the court ruled in February 2013 that the Company and OTCs do not owe transient accommodations tax to the city and ordered the city to refund the amount paid in July 2009; the Company also is seeking a refund of the amount paid in January 2013. San Francisco has appealed the court's ruling and has not refunded the amount paid in July 2009 pending resolution of the appeal. The matter has been stayed while the appeal in another case with the City of San Diego is pending before the California Supreme Court.

In a mixed decision, on March 17, 2015, the Hawaii Supreme Court affirmed a ruling of the Tax Appeal Court for the State of Hawaii holding that the Company and other OTCs are not liable for the State's transient accommodations tax and upheld, in part, the Tax Court's ruling that the OTCs, including the Company, are liable for the State's general excise tax ("GET") on the margin and fee retained by an OTC as compensation in a transaction. The Hawaii Supreme Court reversed that portion of the Tax Court's decision that had held that OTCs are liable for GET on the full amount the OTC collects from the customer for a hotel room reservation, not just margin and fee, without any offset for amounts passed through to the hotel. The Company had recorded an accrual for travel transaction taxes (including estimated interest and penalties), with a corresponding charge to cost of revenues, of approximately $16.5 million in December 2012 and approximately $18.7 million in the three months ended March 31, 2013, primarily related to the Tax Court ruling. Also, during the year ended December 31, 2014 and nine months ended September 30, 2015, the Company had paid approximately $2.2 million and $0.6 million, respectively, to the State of Hawaii related to the Tax Court ruling. The March 2015 ruling by the Hawaii Supreme Court significantly reduced the Company's (and other OTCs') liability under the GET statute since GET is now owed only on the Company's margin and fee, not the gross amount charged to a customer in a transaction. As a result, the Company reduced its accrual for travel transaction taxes (including estimated interest and penalties) by $16.4 million with a corresponding reduction to cost of revenues in the first quarter of 2015. In addition, the Company recognized a net reduction in cost of revenue in the third quarter of 2015 of $13.7 million related to travel transaction taxes, principally due to a cash refund from the State of Hawaii for payments made in 2013. The Company is seeking additional refund from the State of Hawaii totaling approximately $4 million in tax previously paid in excess of its actual liability, which will be recorded as a reduction in cost of revenues in the periods in which the cash refunds are received.

Litigation is subject to uncertainty and there could be adverse developments in these pending or future cases and proceedings. An unfavorable outcome or settlement of pending litigation may encourage the commencement of additional litigation, audit proceedings or other regulatory inquiries and also could result in substantial liabilities for past and/or future bookings, including, among other things, interest, penalties, punitive damages and/or attorneys' fees and costs.  In connection with some of these tax audits and assessments, the Company may be required to pay any assessed taxes, which amounts may be substantial, prior to being allowed to contest the assessments and the applicability of the laws in judicial proceedings. This requirement is commonly referred to as "pay to play" or "pay first." There have been, and will continue to be, substantial ongoing costs, which may include "pay first" payments, associated with defending the Company's position in pending and any future cases or proceedings.  An adverse outcome in one or more of these unresolved proceedings could have a material adverse effect on the Company's business and could be material to the Company's results of operations or cash flow in any given operating period. However, the Company believes that even if it were to suffer adverse determinations in the near term in more of the pending proceedings than currently anticipated, given results to date it would not have a material impact on the Company's liquidity because of the Company's available cash.

To the extent that any tax authority succeeds in asserting that the Company's services are subject to travel transaction taxes and that the Company has a tax collection responsibility for those taxes, or the Company determines that it has such a

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responsibility, with respect to future transactions, the Company may collect any such additional tax obligation from its customers, which would have the effect of increasing the cost of travel reservations to its customers and, consequently, could make the Company's travel reservation services less competitive (as compared to the services of other OTCs or travel service providers) and reduce the Company's travel reservation transactions; alternatively, the Company could choose to reduce the compensation for its services.  Either action could have a material adverse effect on the Company's business and results of operations.

In many of the judicial and other proceedings initiated to date, the taxing jurisdictions seek not only historical taxes that are claimed to be owed on the Company's gross profit, but also, among other things, interest, penalties, punitive damages and/or attorneys' fees and costs.  In addition, some jurisdictions have attempted to seek tax from the Company on amounts that the Company has already remitted to hotels for payment to taxing authorities. Therefore, any liability associated with travel transaction tax matters is not constrained to the Company's liability for tax owed on its historical gross profit, but may also include, among other things, tax on the amounts paid to hotels (as well as on our margin), penalties, interest and attorneys' fees.  With respect to taxing jurisdictions that have not initiated proceedings to date, it is possible that they will do so in the future or that they will seek to amend their tax statutes and seek to collect taxes from the Company only on a prospective basis.

Accrual for Travel Transaction Taxes

As a result of this litigation and other attempts by jurisdictions to levy similar taxes, the Company has established an accrual (including estimated interest and penalties) for the potential resolution of issues related to travel transaction taxes in the amount of approximately $27 million at September 30, 2015 and $52 million at December 31, 2014. The March 2015 ruling by the Hawaii Supreme Court significantly reduced the Company's (and other OTCs') liability and as a result the Company reduced its accrual for travel transaction taxes (including estimated interest and penalties) by $16.4 million with a corresponding reduction to cost of revenues in the first quarter of 2015. The Company's legal expenses for these matters are expensed as incurred and are not reflected in the amount accrued. The actual cost may be less or greater, potentially significantly, than the liabilities recorded. An estimate for a reasonably possible loss or range of loss in excess of the amount accrued cannot be reasonably made.

Patent Infringement

On February 9, 2015, International Business Machines Corporation ("IBM") filed a complaint in the U.S. District Court for the District of Delaware against The Priceline Group Inc. and its subsidiaries KAYAK Software Corporation, OpenTable, Inc. and priceline.com LLC (the "Subject Companies").  In the complaint, IBM alleges that the Subject Companies have infringed and continue to willfully infringe certain IBM patents that IBM claims relate to the presentation of applications and advertising in an interactive service, preserving state information in online transactions and single sign-on processes in a computing environment and seeks unspecified damages (including a request that the amount of compensatory damages be trebled), injunctive relief and costs and reasonable attorneys’ fees.  The Company believes the claims to be without merit and intends to contest them.

French Tax Audit

French tax authorities have been conducting an audit of the years 2006 through 2012 to determine whether the Company is in compliance with its tax obligations in France, and the Company currently expects to receive a formal assessment in the fourth quarter of 2015.  While the Company believes that it has been, and continues to be, in compliance with French tax law, as a result of the audit the Company expects the French tax authorities to claim that Booking.com has a permanent establishment in France and seek to recover unpaid income taxes and value-added taxes ("VAT") of approximately 350 million Euros, the majority of which would represent penalties and interest.  The Company intends to contest any such assessment. If the Company is unable to resolve the matter with the French authorities, it would expect to challenge the assessment in the French courts. In order to contest the assessment in court, the Company would be required to pay, upfront, the full amount of any such assessment, though any such payment would not constitute an admission by it that it owes the tax. French authorities may decide to also audit subsequent tax years, which could result in additional assessments.

Other

The Company intends to defend against the claims in all of the proceedings described in this Note 12.  The Company has accrued for certain legal contingencies where it is probable that a loss has been incurred and the amount can be reasonably estimated.  Such accrued amounts are not material to the Company's consolidated balance sheets and provisions recorded have not been material to the Company's consolidated results of operations or cash flows.  An estimate for a reasonably possible loss or range of loss in excess of the amount accrued cannot be reasonably made.

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From time to time, the Company has been, and expects to continue to be, subject to legal proceedings and claims in the ordinary course of business, including claims of alleged infringement of third-party intellectual property rights.  Such claims, even if not meritorious, could result in the expenditure of significant financial and managerial resources, divert management's attention from the Company's business objectives and adversely affect the Company's business, results of operations, financial condition and cash flows.

Contingent Consideration for Business Acquisitions

As of December 31, 2014, the Company recognized a liability of $10.7 million for estimated contingent payments related to an acquisition. In the three months ended September 30, 2015, the Company paid $18.4 million to settle this contingent liability. The cash payment related to the acquisition-date estimated fair value of $10.7 million is reported as a financing activity and the remaining cash payment of $7.7 million, which was charged to operating expense as a fair value adjustment, is included as an operating activity on the Unaudited Consolidated Statement of Cash Flows for the nine months ended September 30, 2015.

As of September 30, 2015, the Company recognized a liability of approximately $9 million for estimated contingent payments related to another acquisition. The estimated acquisition-date contingent liability is based upon the probability-weighted average payments for specific performance factors from the acquisition date through the performance period which ends at March 31, 2019. The range of undiscounted outcomes for the estimated contingent payments is approximately $0 to $90 million.

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Item 2.  Management's Discussion and Analysis of Financial Condition and Results of Operations

The following discussion should be read in conjunction with our Unaudited Consolidated Financial Statements, including the notes to those statements, included elsewhere in this Quarterly Report, and the Section entitled "Special Note Regarding Forward-Looking Statements" in this Quarterly Report.  As discussed in more detail in the Section entitled "Special Note Regarding Forward-Looking Statements," this discussion contains forward-looking statements, which involve risks and uncertainties.  Our actual results may differ materially from the results discussed in the forward-looking statements.  Factors that might cause those differences include those discussed in "Risk Factors" and elsewhere in this Quarterly Report. The information on our websites is not a part of this Quarterly Report and is not incorporated herein by reference.

We evaluate our results of operations on both an as reported and constant currency basis. We calculate constant currency by converting our current-period financial results for transactions recorded in currencies other than U.S. Dollars using the prior-period monthly average exchange rates rather than the current-period monthly average exchange rates.

Overview

We are a leading provider of online travel and travel-related reservation and search services. Through our online travel reservation services, we connect consumers wishing to make travel reservations with providers of travel services around the world. We offer consumers accommodation reservations (including hotels, bed and breakfasts, hostels, apartments, vacation rentals and other properties) through our Booking.com, priceline.com and agoda.com brands. Our priceline.com brand also offers consumers reservations for rental cars, airline tickets, vacation packages and cruises. We offer rental car reservations worldwide through rentalcars.com. We also allow consumers to easily compare airline ticket, hotel reservation and rental car reservation information from hundreds of travel websites at once through KAYAK. We provide restaurants with reservation management services and consumers with the ability to make restaurant reservations at participating restaurants through OpenTable, a leading provider of online restaurant reservations. We refer to our company and all of our subsidiaries and brands, including Booking.com, priceline.com, KAYAK, agoda.com, rentalcars.com and, as of July 24, 2014, OpenTable, collectively as "The Priceline Group," the "Company," "we," "our" or "us."

We launched our business in the United States in 1998 under the priceline.com brand and have since expanded our operations to include Booking.com, agoda.com, rentalcars.com, KAYAK and OpenTable, which are independently managed and operated brands.  Our principal goal is to serve consumers and our travel service provider and restaurant partners with worldwide leadership in online reservation services.  Our business is driven primarily by international results, which consist of the results of Booking.com, agoda.com and rentalcars.com and the results of the internationally based websites of KAYAK and, as of July 24, 2014, OpenTable (in each case regardless of where the consumer resides, where the consumer is physically located while making a reservation or the location of the travel service provider or restaurant). During the year ended December 31, 2014, our international business (the substantial majority of which is generated by Booking.com) represented approximately 87% of our gross bookings (an operating and statistical metric referring to the total dollar value, generally inclusive of all taxes and fees, of all travel services purchased by our customers), and approximately 94% of our consolidated operating income. A significant majority of our gross profit is earned in connection with facilitating accommodation reservations.

We derive substantially all of our gross profit from the following sources:

• Commissions earned from facilitating reservations of accommodations, rental cars, cruises and other travel services;

• Transaction gross profit and customer processing fees from our accommodation, rental car, airline ticket and vacation package reservation services;

• Advertising revenues primarily earned by KAYAK from sending referrals to online travel companies ("OTCs") and travel service providers, as well as from advertising placements on KAYAK's websites and mobile apps;

• Beginning on July 24, 2014, revenues recognized by OpenTable, which consist of reservation revenues (a fee for restaurant guests seated through OpenTable's online reservation service), subscription fees for restaurant reservation management services and other revenues; and

• Damage excess waiver fees, travel insurance fees and global distribution system ("GDS") reservation booking fees, in each case related to certain of our travel services.

Our priceline.com brand offers merchant Name Your Own Price^® opaque travel services, which are recorded in revenue on a "gross" basis and have associated cost of revenue. All of our other services are recorded in revenue on a "net" basis and have no associated cost of revenue. Therefore, revenue increases and decreases are impacted by changes in the mix

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of our revenues between Name Your Own Price^® travel services and other services. Gross profit reflects the commission or net margin earned for all of our services. Consequently, gross profit is an important measure to evaluate growth in our business because, in contrast to our revenues, it is not affected by the different methods of recording revenue and cost of revenue between our Name Your Own Price^® travel reservation services and our other services.

Trends

Over the last several years we have experienced strong growth in our accommodation reservation services. We believe this growth is the result of, among other things, the broader shift of travel purchases from offline to online, the widespread adoption of mobile devices, the high growth of travel overall in emerging markets such as Asia-Pacific and South America, and the continued innovation and execution by our teams around the world to build accommodation supply, content and distribution and to improve the customer experience on our websites and mobile apps. These year-over-year growth rates have generally decelerated in recent years. For example, for the three months ended September 30, 2015, our accommodation room night reservation growth was 22% compared to 27% in the three months ended September 30, 2014. Given the size of our hotel reservation business, we expect that our year-over-year growth rates will continue to decelerate, though the rate of deceleration may fluctuate.

The size of the travel market outside of the United States is substantially greater than that within the United States. Historically, Internet use and e-commerce activity of international consumers have trailed that of consumers in the United States. However, international consumers are increasingly moving to online means for purchasing travel. Accordingly, recent international online travel growth rates have substantially exceeded, and are expected to continue to exceed, the growth rates within the United States. We expect that over the long term, international online travel growth rates will follow a similar trend to that experienced in the United States. In addition, the base of hotel properties in Europe and Asia is particularly fragmented compared to that in the United States, where the hotel market is dominated by large hotel chains. We believe online reservation systems like ours may be more appealing to small chains and independent hotels more commonly found outside of the United States. We believe these trends and factors have enabled us to become the leading online accommodation reservation service provider in the world as measured by room nights booked. We believe that the opportunity to continue to grow our business exists for the markets in which we operate.

Our growth has primarily been generated by our worldwide accommodation reservation service brand, Booking.com, which is our most significant brand, and has been due, in part, to the availability of a large and growing number of directly bookable properties through Booking.com. Booking.com included over 820,000 properties on its website as of November 3, 2015, which included about 378,000 vacation rental properties (updated property counts are available on the Booking.com website), and compares to approximately 594,000 properties (including approximately 237,000 vacation rental properties) a year ago. In September 2015, Booking.com changed the way it calculates property counts. As a result, properties that are contracted with Booking.com but temporarily do not have availability on Booking.com (for example properties that are closed during their off-peak season or for renovations) will remain included in Booking.com's property counts during these temporary periods. Booking.com previously excluded properties that were temporarily unavailable for booking. We believe that continuously including them provides a more consistent and useful property count. We believe that continuing to expand the number and variety of accommodations available through our services, in particular Booking.com, will enable us to continue to grow our accommodation reservation business.

As our international business represents the substantial majority of our financial results, we expect to continue to see our operating results and other financial metrics largely driven by international performance. For example, certain markets in which we operate that are in earlier stages of development have lower operating margins compared to more mature markets, which could have a negative impact on our overall margins as these markets increase in size over time. Also, we intend to continue to invest in adding accommodations available for reservation on our websites, including hotels, bed and breakfasts, hostels and vacation rentals. Vacation rentals generally consist of, among others, properties categorized as single-unit and multi-unit villas, apartments, "aparthotels" (which are apartments with a front desk and cleaning service) and chalets and are generally self-catered (i.e., include a kitchen), directly bookable properties. The approximately 378,000 vacation rental properties on Booking.com's website as of November 3, 2015 (updated property counts are available on the Booking.com's website) represent approximately 1.9 million instantly bookable and confirmable units within these properties. Many of the newer accommodations we add to our travel reservation services, especially in highly penetrated markets, may have fewer rooms, lower average daily rates ("ADRs") or higher credit risk and may appeal to a smaller subset of consumers (e.g., hostels and bed and breakfasts), and therefore may also negatively impact our margins. For example, because a vacation rental is either a single unit or a small collection of independent units, vacation rental properties represent more limited booking opportunities than non-vacation rental properties, which generally have more units to rent per property. Our non-hotel accommodations in general may be subject to increased seasonality due to local tourism seasons, weather or other factors. As we increase our non-hotel accommodation business, these different market characteristics could negatively impact our profit margins; and, to the

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extent these properties represent an increasing percentage of the properties added to our websites, our gross bookings growth rate and property growth rate will likely diverge over time (since each such property has fewer booking opportunities). As a result of the foregoing, as the percentage of non-hotel accommodations increases, the number of reservations per property will likely decrease.

Concerns persist about the outlook for the global economy in general, including the European Union, with recent declines in broad Eurozone economic indicators raising fears about the pace of economic growth and the risk of deflation. In addition, many governments around the world, including the U.S. government and certain European governments, continue to operate at large financial deficits, resulting in high levels of sovereign debt in such countries. Greece, Ireland, Portugal and certain other European Union countries with high levels of sovereign debt at times have had difficulty refinancing their debt. Failure to reach political consensus regarding workable solutions to these issues has resulted in a high level of uncertainty regarding the future economic outlook. This uncertainty, as well as concern over governmental austerity measures including higher taxes and reduced government spending, could impair consumer spending and adversely affect travel demand. At times, we have experienced volatility in transaction growth rates, cancellation rates, and weaker trends in hotel ADRs across many regions of the world, particularly in those European countries that appear to be most affected by economic uncertainties. We believe that these business trends are likely impacted by weak economic conditions and sovereign debt concerns. Disruptions in the economies of such countries could cause, contribute to or be indicative of deteriorating macro-economic conditions.

Greece, in particular, has recently faced and continues to face significant economic challenges, in large part due to its high levels of sovereign debt and difficulties re-financing that debt. Although Greece's newly elected government has accepted various austerity measures, it campaigned against austerity measures and in a recent referendum the Greek people rejected certain austerity measures. As a result, it is uncertain whether Greece's recent austerity measures and debt agreement with the European Union will result in a long-term solution to the country's debt crisis. This may increase the likelihood that Greece, and in turn other countries, could exit the European Union, which could lead to added economic uncertainty and further devaluation or eventual abandonment of the Euro common currency. These and other macro-economic uncertainties, such as sovereign default risk becoming more widespread, declining oil prices and geopolitical tensions, have led to significant volatility in the exchange rate between the Euro, the U.S. Dollar and other currencies. The European Central Bank, in an effort to stimulate the European economy, recently launched a quantitative easing program to purchase public debt, which in turn has contributed to the weakening of the Euro compared to the U.S. Dollar.

As noted earlier, our international business represents a substantial majority of our financial results. Therefore, because we report our results in U.S. Dollars, we face exposure to adverse movements in currency exchange rates as the financial results of our international businesses are translated from local currency (principally Euros and British Pounds Sterling) into U.S. Dollars. The U.S. Dollar significantly strengthened against the Euro during 2014, moving from an exchange rate of 1.38 U.S. Dollars per Euro as of January 1, 2014 to 1.21 U.S. Dollars per Euro as of December 31, 2014. The U.S. Dollar has strengthened further in 2015 to an exchange rate of 1.12 U.S. Dollars per Euro as of September 30, 2015. The U.S. Dollar also strengthened significantly during this time frame as compared to many other currencies. As a result, our foreign currency denominated net assets, gross bookings, gross profit, operating expenses and net income have been negatively impacted as expressed in U.S. Dollars. Since our expenses are generally denominated in foreign currencies on a basis similar to our revenues, our operating margins are not significantly impacted by currency fluctuations. The aggregate principal value of our Euro-denominated 2024 Notes and 2027 Notes, and accrued interest thereon, provide a natural hedge of the net assets of certain of our Euro functional currency subsidiaries.

Gross profit from our international operations grew year-over-year on a constant currency basis by approximately 29% and 28%, respectively, for the three and nine months ended September 30, 2015 compared to the three and nine months ended September 30, 2014, but, as a result of the impact of changes in currency exchange rates, grew 11.4% for both the three and nine months ended September 30, 2015, as reported in U.S. Dollars. We generally enter into derivative instruments to minimize the impact of short-term currency fluctuations on our consolidated operating results. However, such derivative instruments are short term in nature and not designed to hedge against currency fluctuations that could impact our gross bookings, revenues or gross profit (see Note 5 to the Unaudited Consolidated Financial Statements for additional information on our derivative contracts).

Significant fluctuations in currency exchange rates can also impact consumer travel behavior. For example, dramatic depreciation of the Russian Ruble in 2014 resulted in it becoming more expensive for Russians to travel to Europe and most other non-Ruble destinations. Consumers traveling from a country whose currency has weakened against other currencies may book lower ADR accommodations, choose to shorten or cancel their international travel plans or choose to travel domestically rather than internationally, any of which could adversely affect our gross bookings, revenues and results of operations, in particular when expressed in U.S. Dollars.

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The uncertainty of macro-economic factors, the volatility in foreign exchange rates and their impact on consumer behavior, which may differ across regions, makes it more difficult to forecast industry and consumer trends and the timing and degree of their impact on our markets and business, which in turn could adversely affect our ability to effectively manage our business and adversely affect our results of operations.

We compete with both online and traditional travel and travel-related reservation and search services. The market for the travel reservation and search services we offer is intensely competitive, a trend we expect to continue, and current and new competitors can launch new services at a relatively low cost. We currently, or may potentially in the future, compete with a variety of companies, including:

• online travel reservation services such as those owned by Expedia (which acquired Travelocity in January 2015 and Orbitz in September 2015), Ctrip, Rakuten, eDreams ODIGEO and Jalan;

• online accommodation search and/or reservation services, such as Airbnb and HomeAway (which has agreed to be acquired by Expedia), focused on vacation rental properties, including individually owned properties;

• large online companies, including search, social networking and marketplace companies such as Google, Facebook, Alibaba and Groupon;

• traditional travel agencies, wholesalers and tour operators, such as Carlson Wagonlit, American Express, Thomas Cook and Tui Travel, as well as thousands of individual travel agencies around the world;

• travel service providers such as accommodation providers, rental car companies and airlines;

• online travel search and price comparison services (generally referred to as "meta-search" services), such as TripAdvisor, trivago (in which Expedia holds a majority ownership interest), Qunar and HotelsCombined; and

• online restaurant reservation services, such as TripAdvisor's LaFourchette and Yelp's SeatMe.

For more detail regarding the competitive trends and risks we face, see Part II Item 1A Risk Factors - "Intense competition could reduce our market share and harm our financial performance." and "Consumer adoption and use of mobile devices create new challenges and may enable device companies such as Apple to compete directly with us."

After entering into an exclusive, long-term strategic marketing agreement in August 2013, Expedia acquired Travelocity in January 2015. And, in September 2015, Expedia acquired Orbitz. To the extent these acquisitions enhance Expedia's ability to compete with us, in particular in the United States, which is Expedia's, Travelocity's and Orbitz's largest market, our market share and results of operations could be adversely affected.

Widespread adoption of mobile devices, such as the iPhone, Android-enabled smart phones and tablets such as the iPad, coupled with the improved web browsing functionality and development of thousands of useful "apps" available on these devices, is driving substantial online traffic and commerce to mobile platforms.  We have experienced a significant shift of business to mobile platforms and our advertising partners are also seeing a rapid shift of traffic to mobile platforms. Our major competitors and certain new market entrants are offering mobile apps for travel products and other mobile functionality, including proprietary last-minute discounts for accommodation reservations.  Advertising and distribution opportunities may be more limited on mobile devices given their smaller screen sizes.  The gross profit earned on a mobile transaction may be less than a typical desktop transaction due to different consumer purchasing patterns. For example, accommodation reservations made on a mobile device typically are for shorter lengths of stay and are not made as far in advance. Further, given the device sizes and technical limitations of tablets and smart phones, mobile consumers may not be willing to download multiple apps from multiple companies providing a similar service and instead prefer to use one or a limited number of apps for their mobile travel and restaurant research and reservation activity. As a result, the consumer experience with mobile apps as well as brand recognition and loyalty are likely to become increasingly important. Our mobile offerings have received generally strong reviews and achieved solid download trends, and are driving a material and increasing share of our business. We believe that mobile bookings present an opportunity for growth and are necessary to maintain and grow our business as consumers increasingly turn to mobile devices instead of a personal computer and to mobile apps in addition to a web browser. If we are unable to continue to rapidly innovate and create new, user-friendly and differentiated mobile offerings and efficiently and effectively advertise and distribute on these platforms, or if our mobile apps are not downloaded and used by consumers, we could lose market share to existing competitors or new entrants and our future growth and results of operations could be adversely affected.

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In addition, we have observed an increase in promotional pricing to closed user groups (such as loyalty program participants or customers with registered accounts), including through mobile apps. If we are not as effective as our competitors in offering discounted prices to closed user groups or if we are unable to entice members of our competitors' closed user groups to use our services, our ability to grow and compete could be harmed. If we need to fund discounts out of our gross profit, our profitability could be adversely affected. Further, growth in discounted closed user group retail prices for hotel rooms lessens the price difference for members of closed user groups between a retail hotel reservation and an opaque hotel reservation, which we believe has led to fewer consumers using our opaque hotel reservation services. In addition, hotels typically make available only a limited number of hotel rooms for opaque services like those of our priceline.com business, especially during periods of high occupancy. Recent high hotel occupancy levels in the United States (which have had an adverse impact on our access to hotel rooms for our opaque hotel reservation services) and, we believe, the increased use by consumers of discounted closed user group retail prices for hotel rooms have negatively affected our opaque hotel reservation gross profit.

We have established widely used and recognized e-commerce brands through aggressive marketing and promotional campaigns. Both our online and offline advertising expense has increased significantly in recent years, a trend we expect to continue. For the nine months ended September 30, 2015, our total online advertising expense was approximately $2.2 billion, primarily related to the use of online search engines (primarily Google), meta-search and travel research services and affiliate marketing to generate traffic to our websites. We also invested approximately $181 million in offline advertising during that period. We intend to continue a strategy of aggressively promoting brand awareness, primarily through online means although we also intend to increase our offline advertising efforts, including by expanding offline campaigns into additional markets. For example, building on its first offline advertising campaign, which it launched in the United States in 2013, Booking.com has begun offline advertising campaigns in other markets, including Australia, Canada, the United Kingdom, Germany, France, Brazil and Japan. We have observed increased offline advertising by OTCs, meta-search services and travel service providers, particularly in North America and Europe, which may make our offline advertising efforts more expensive and less effective.

Online advertising efficiency, expressed as online advertising expense as a percentage of gross profit, is impacted by a number of factors that are subject to variability and that are, in some cases, outside of our control, including ADRs, costs per click, cancellation rates, foreign exchange rates, our ability to convert paid traffic to booking customers and the extent to which consumers come directly to our websites or mobile apps for bookings. For example, competition for desired rankings in search results and/or a decline in ad clicks by consumers could increase our costs-per-click and reduce our online advertising efficiency. From 2011 to 2013, our online advertising expense grew faster than our gross profit due to (1) year-over-year declines in online advertising returns on investment ("ROIs") and (2) brand mix within The Priceline Group as our international brands grew faster than our U.S. brands and spent a higher percentage of gross profit on online advertising. In 2014, these long-term trends continued, but were more than offset by the inclusion of KAYAK and OpenTable because they spend a lower percentage of gross profit on online advertising than our other brands. Also, our consolidated results exclude intercompany advertising by our brands on KAYAK since our acquisition of KAYAK in May 2013. In the first three quarters of 2015, online advertising efficiency declined compared to the prior year, mainly due to lower ROIs. If Google changes how it presents travel search results or the manner in which it conducts the auction for placement among search results in a manner that is competitively disadvantageous to us, whether to support its own travel-related services or otherwise, our ability to efficiently generate traffic to our websites could be harmed. See Part II Item 1A Risk Factors- "We rely on online advertising channels to enhance our brand awareness and to generate a significant amount of traffic to our websites." and "Our business could be negatively affected by changes in Internet search engine algorithms and dynamics or traffic-generating arrangements."

The national competition authorities ("NCAs") of many governments have begun investigations into competitive practices within the online travel industry, and we may be involved or affected by such investigations and their results. For example, between July 2012 and September 2015 Booking.com was the subject of a competition investigation by U.K. competition authorities. Other NCAs, including those in France, Germany, Italy, Austria, Sweden, Ireland and Switzerland, more recently opened investigations that focus on Booking.com's contractual parity arrangements with accommodation providers in those jurisdictions, and a number of other NCAs are looking at these issues. It is uncertain how these issues will finally be resolved. For example, the French, Italian and Swedish NCAs accepted commitments offered by Booking.com to resolve and close their investigations and Booking.com voluntarily implemented these commitments throughout the European Economic Area and Switzerland on July 1, 2015, which resolved the concerns of various other countries. However, in August 2015 France adopted legislation known as the "Macron Law" making price parity agreements illegal, including those that had been approved by the French NCA. For more information on these investigations and their potential effects on our business, see Footnote 12 to our Unaudited Consolidated Financial Statements and Part II Item 1A Risk Factors - "As the size of our business grows, we may become increasingly subject to the scrutiny of anti-trust and competition regulators." To the extent that regulatory authorities impose fines or require changes to our business practices or to those currently common to the industry or legislation is enacted with a similar effect, our business, competitive position and results of operations could be materially and

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adversely affected. Negative publicity regarding any such investigations could adversely affect our brand and therefore our market share and results of operations.

Seasonality

A meaningful amount of our gross bookings are generated early in the year, as customers plan and reserve their spring and summer vacations in Europe and North America. From a cost perspective, we expense the substantial majority of our advertising activities as the expense is incurred, which is typically in the quarter in which reservations are booked. However, we generally do not recognize associated revenue until future quarters when the travel occurs. As a result, we typically experience our highest levels of profitability in the second and third quarters of the year, which is when we experience the highest levels of accommodation checkouts for the year for our European and North American businesses.

In addition, the date on which certain holidays fall can have an impact on our quarterly results. For example, in 2013 our second quarter year-over-year growth rates in revenue, gross profit, operating income and operating margins were adversely affected by Easter falling in the first quarter instead of the second quarter, as it did in 2012. Conversely, our second quarter 2014 year-over-year growth rates in revenue, gross profit, operating income and operating margins were favorably impacted by Easter falling in the second quarter instead of the first quarter, as it did in 2013.

The impact of seasonality can be exaggerated in the short term by the gross bookings growth rate of the business. For example, in periods where our growth rate substantially decelerates, our operating margins typically benefit from relatively less variable advertising expense. In addition, gross profit growth is typically less impacted in the near term due to the benefit of revenue related to reservations booked in previous quarters.

We experience the highest levels of booking and travel consumption for our Asia-Pacific and South American businesses in the first and fourth quarters. Therefore, if these businesses grow faster than our European and North American businesses, our operating results for the first and fourth quarters of the year may become more significant over time as a percentage of full-year operating results.

Other Factors

We believe that our future success depends in large part on our ability to continue to profitably grow our brands worldwide, and, over time, to offer other travel and travel-related services and further expand into other international markets. Factors beyond our control, such as worldwide recession, oil prices, terrorist attacks, unusual weather patterns, natural disasters such as earthquakes, hurricanes, tsunamis, floods and volcanic eruptions, travel-related health concerns including pandemics and epidemics such as Ebola, Influenza H1N1, avian bird flu, SARS and MERS, political instability, regional hostilities, imposition of taxes or surcharges by regulatory authorities or travel-related accidents, could adversely affect our business and results of operations. For example, our business and operations were negatively impacted by Hurricane Sandy, which disrupted travel in the northeastern United States in late 2012; a major earthquake, tsunami and nuclear emergency in Japan in 2011; severe flooding in Thailand in October 2011; and disruptive civil unrest in Thailand in 2010 and 2014. In addition, MERS has had an adverse impact on our business in northeast Asia in 2015. Future natural disasters, health concerns or civil or political unrest could further disrupt our business and operations.

We intend to continue to invest in marketing and promotion, technology and personnel within parameters consistent with attempts to improve long-term operating results, even if those expenditures create pressure on operating margins. We have experienced pressure on operating margins as we prioritize initiatives that drive growth. For example, we are investing in growth initiatives at OpenTable, including international expansion, and in building our BookingSuite partner-facing software services platform. We also intend to broaden the scope of our business, and to that end, we explore strategic alternatives from time to time in the form of, among other things, mergers and acquisitions. Our goal is to grow gross profit and achieve healthy operating margins in an effort to maintain profitability. The uncertain environment described above makes the prediction of future results of operations difficult, and accordingly, we may not be able to sustain gross profit growth and profitability.

Critical Accounting Policies and Estimates

As of September 30, 2015, we performed our annual goodwill impairment testing and concluded that there was no impairment of goodwill. A substantial portion of our intangibles and goodwill relates to our acquisitions of OpenTable in July 2014 and KAYAK in May 2013. Other than OpenTable, the fair values of our reporting units substantially exceeded their respective carrying values as of September 30, 2015.

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As of September 30, 2015, OpenTable’s carrying value was $2.5 billion, of which $1.5 billion relates to goodwill. The fair value of OpenTable slightly exceeded its carrying value as of September 30, 2015. OpenTable’s fair value was determined using a combination of standard valuation techniques, including an income approach (discounted cash flows) and market approaches (EBITDA multiples of comparable publicly-traded companies and for precedent transactions). Since the acquisition, we have invested, and intend to continue to invest, in OpenTable to accelerate its global expansion, increase the value offered to its restaurant partners and enhance the end-to-end experience for customers across desktop and mobile devices. As expected, these investments resulted in lower OpenTable post-acquisition EBITDA compared to pre-acquisition levels. However, the time required to execute these investments has exceeded our initial expectations. Despite the delays, we continue to believe that these investments will result in significant future earnings. Future events and changing market conditions may, however, lead us to reevaluate the assumptions we have used to test for goodwill impairment, including key assumptions regarding OpenTable's expected growth rates and operating margins, as well as other key assumptions with respect to matters outside of our control, such as discount rates, currency exchange rates and market EBITDA comparables. If OpenTable’s investments, in particular its investments in its global expansion efforts, are not successful, there is a substantial likelihood that we would recognize a related goodwill impairment, which could have a material adverse affect on our results of operations.

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Results of Operations

Three and Nine Months Ended September 30, 2015 compared to the Three and Nine Months Ended September 30, 2014

Operating and Statistical Metrics

Our financial results are driven by certain operating metrics that encompass the booking and other business activity generated by our travel and travel-related services.  Specifically, reservations of accommodation room nights, rental car days and airline tickets capture the volume of units purchased by our travel reservation services customers.  Gross bookings, net of cancellations, is an operating and statistical metric that captures the total dollar value, generally inclusive of taxes and fees, of all travel services booked by our customers and is widely used in the travel business.  International gross bookings reflect gross bookings generated principally by our Booking.com, agoda.com and rentalcars.com businesses and U.S. gross bookings reflect gross bookings generated principally by our priceline.com business, in each case regardless of where the consumer resides, where the consumer is physically located while making a reservation or the location of the travel service provider. We follow a similar approach for reporting the international and U.S. revenue and gross profit of those businesses.

Gross bookings resulting from accommodation room nights, rental car days and airline tickets reserved through our international and U.S. operations for the three and nine months ended September 30, 2015 and 2014 were as follows (numbers may not total due to rounding): 

	Three Months Ended September 30, (in millions)						Nine Months Ended September 30, (in millions)
	2015		2014		Change		2015		2014		Change
International	$	13,078	$	12,080	8.3	%	$	38,273	$	34,406	11.2	%
U.S.	1,700		1,743		(2.5	)%	5,240		5,235		0.1	%
Total	$	14,778	$	13,823	6.9	%	$	43,513	$	39,641	9.8	%

Gross bookings increased by 6.9% and 9.8% for the three and nine months ended September 30, 2015, respectively, compared to the three and nine months ended September 30, 2014 (growth on a constant currency basis was approximately 22% and 25%, respectively), principally due to growth of 22.0% and 24.5%, respectively, in accommodation room night reservations, 2% growth on a constant currency basis in ADRs for each period and growth of 13.0% and 17.0%, respectively, in rental car day reservations. International gross bookings grew by 8.3% and 11.2%, respectively, for the three and nine months ended September 30, 2015 compared to the three and nine months ended September 30, 2014 (growth on a constant currency basis was approximately 25% and 28%, respectively). International gross bookings growth on a constant currency basis was primarily attributable to growth in accommodation room night reservations for our Booking.com business, as well as growth in rental car day reservations for our rentalcars.com business and accommodation room night reservations for our agoda.com business.  The U.S. Dollar significantly strengthened against the Euro during 2014, moving from an exchange rate of 1.38 U.S. Dollars per Euro as of January 1, 2014 to 1.21 U.S. Dollars per Euro as of December 31, 2014. The U.S. Dollar has strengthened further during 2015 to an exchange rate of 1.12 U.S. Dollars per Euro as of September 30, 2015. The U.S. Dollar has also strengthened against many other currencies since January 1, 2014. At these exchange rates, the growth of our international and total gross bookings, expressed in U.S. Dollars, has been and will continue to be significantly adversely impacted through the remainder of 2015. We therefore believe that unit growth rates and total gross bookings, international gross bookings and gross profit growth on a constant currency basis, excluding the impact of foreign exchange rate fluctuations, are important measures to understand the fundamental performance of the business.

U.S. gross bookings decreased by 2.5% for the three months ended September 30, 2015 compared to the three months ended September 30, 2014 due to declines in gross bookings by priceline.com’s retail airline ticket service (primarily due to lower airfares, partially offset by an increase in the number of retail airline ticket reservations), Name Your Own Price^®reservation services and vacation package reservation service, partially offset by increases in gross bookings by priceline.com’s retail hotel, retail rental car and Express Deals^®hotel reservation services and the inclusion of our Rocketmiles hotel reservation service (which we acquired in February 2015). U.S. gross bookings increased by 0.1% for the nine months ended September 30, 2015 compared to the nine months ended September 30, 2014, primarily due to increases in gross bookings by priceline.com's retail hotel and rental car reservation services, priceline.com's Express Deals^®hotel reservation service and the inclusion of our Rocketmiles hotel reservation service, mostly offset by declines in gross bookings by priceline.com's retail airline ticket service (due to lower airfares, partially offset by an increase in the number of airline ticket reservations), Name Your Own Price^®reservation services and vacation package reservation service. Travel service providers typically provide a limited amount of availability to opaque services like those of priceline.com, especially during periods of healthy travel

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demand. As a result, the recent healthy travel environment (which has had an adverse impact on our access to availability) and the increased use by consumers of discounted closed user group retail prices for hotel rooms have negatively affected our opaque reservation services.

Gross bookings resulting from reservations of accommodation room nights, rental car days and airline tickets made through our agency and merchant models for the three and nine months ended September 30, 2015 and 2014 were as follows (numbers may not total due to rounding): 

	Three Months Ended September 30, (in millions)						Nine Months Ended September 30, (in millions)
	2015		2014		Change		2015		2014		Change
Agency	$	12,850	$	11,821	8.7	%	$	37,625	$	33,917	10.9	%
Merchant	1,928		2,002		(3.7	)%	5,889		5,724		2.9	%
Total	$	14,778	$	13,823	6.9	%	$	43,513	$	39,641	9.8	%

Agency gross bookings are derived from travel-related transactions where we are not the merchant of record and merchant gross bookings are derived from services where we are the merchant of record. Agency gross bookings increased 8.7% and 10.9% for the three and nine months ended September 30, 2015, respectively, compared to the three and nine months ended September 30, 2014, primarily due to growth in gross bookings from Booking.com accommodation room night reservations, as well as growth in gross bookings by priceline.com and agoda.com agency retail hotel reservation services, rentalcars.com and priceline.com agency retail rental car reservation services, partially offset by lower retail airfares. Merchant gross bookings decreased 3.7% for the three months ended September 30, 2015 compared to the three months ended September 30, 2014 due to the impact of the stronger U.S. Dollar on agoda.com’s merchant retail hotel reservation services and declines in gross booking by priceline.com's Name Your Own Price^®reservation services, partially offset by increases in gross bookings by merchant retail hotel reservation services for Booking.com and priceline.com, priceline.com's Express Deals^®hotel reservation service, rentalcars.com rental car reservations and the inclusion of our Rocketmiles hotel reservation service. Merchant gross bookings increased 2.9% for the nine months ended September 30, 2015 compared to the nine months ended September 30, 2014, primarily due to increases in gross bookings by merchant retail hotel reservation services for priceline.com and Booking.com, priceline.com's Express Deals^®hotel reservation services, rentalcars.com rental car reservation services and the inclusion of our Rocketmiles hotel reservation service, partially offset by declines in gross bookings by priceline.com's Name Your Own Price^®reservation services and the impact of the stronger U.S. Dollar on agoda.com's merchant retail hotel reservation services. The U.S. Dollar is significantly stronger against the Euro and many other currencies as of September 30, 2015 compared to 2014. At these exchange rates, the growth of our agency and merchant gross bookings, expressed in U.S. Dollars, has been and will continue to be significantly adversely impacted through the remainder of 2015.

Accommodation room nights, rental car days and airline tickets reserved through our services for the three and nine months ended September 30, 2015 and 2014 were as follows:

	Three Months Ended September 30, (in millions)				Nine Months Ended September 30, (in millions)
	2015	2014	Change		2015	2014	Change
Room Nights	115.6	94.8	22.0	%	333.3	267.8	24.5	%
Rental Car Days	16.0	14.2	13.0	%	47.7	40.8	17.0	%
Airline Tickets	2.0	2.0	(1.1	)%	6.1	6.1	(1.3	)%

Accommodation room night reservations increased by 22.0% and 24.5% for the three and nine months ended September 30, 2015, respectively, compared to the three and nine months ended September 30, 2014, due to an increase in Booking.com, agoda.com and priceline.comaccommodation room night reservations and the inclusion of Rocketmiles accommodation room night reservations. Booking.com included over 820,000 properties on its website as of November 3, 2015, which included about 378,000 vacation rental properties (updated property counts are available on the Booking.com website), and compares to approximately 594,000 properties (including approximately 237,000 vacation rental properties) a year ago. In September 2015, Booking.com changed the way it calculates property counts. As a result, properties that are contracted with Booking.com but temporarily do not have availability on Booking.com (for example, properties that are closed during their off-peak season or for renovations) will remain included in Booking.com's property counts during these temporary periods. Booking.com previously excluded properties that were temporarily unavailable for booking. We believe that continuously including them provides a more consistent and useful property count.

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Rental car day reservations increased by 13.0% and 17.0% for the three and nine months ended September 30, 2015, respectively, compared to the three and nine months ended September 30, 2014, due to an increase in price-disclosed rental car day reservations for rentalcars.com and priceline.com, partially offset by a decline in priceline.com's Name Your Own Price^® rental car day reservations.

Airline ticket reservations decreased by 1.1% and 1.3% for the three and nine months ended September 30, 2015, respectively, compared to the three and nine months ended September 30, 2014, due to a decline in priceline.com's Name Your Own Price^® airline ticket reservations, partially offset by an increase in priceline.com's retail airline ticket reservations.

Revenues

We classify our revenue into three categories:

• Agency revenues are derived from travel-related transactions where we are not the merchant of record and where the prices of the travel services are determined by third parties. Agency revenues include travel commissions, GDS reservation booking fees related to certain travel services, travel insurance fees and customer processing fees and are reported at the net amounts received, without any associated cost of revenue. Substantially all of the revenue for Booking.com is agency revenue comprised of travel commissions.

• Merchant revenues are derived from services where we are the merchant of record and therefore charge the customer's credit card for the travel services provided. Merchant revenues include (1) transaction net revenues (i.e., to the extent applicable, the amount charged to a customer, less the amount charged to us by travel service providers) in connection with (a) the accommodation reservations provided through our merchant price-disclosed hotel reservation services at agoda.com, priceline.com, Booking.com and Rocketmiles and (b) the reservations provided through our merchant rental car service at rentalcars.com and merchant Express Deals^® reservation services at priceline.com; (2) transaction revenues representing the price of Name Your Own Price^® hotel, rental car and airline ticket reservations and vacation packages charged to a customer (with a corresponding travel service provider cost recorded in cost of revenues); (3) customer processing fees charged in connection with priceline.com's Express Deals^® reservation services, Name Your Own Price^® reservation services and merchant retail hotel reservation service; and (4) ancillary fees, including damage excess waiver and travel insurance fees and GDS reservation booking fees related to certain of the services listed above.

• Advertising and other revenues are derived primarily from (1) revenues earned by KAYAK for (a) sending referrals to OTCs and travel service providers and (b) advertising placements on KAYAK's websites and mobile apps; (2) revenues earned by OpenTable for (a) reservation fees (a fee for restaurant guests seated through OpenTable's online reservation service) and (b) subscription fees earned by OpenTable for restaurant reservation management services; (3) revenues earned by priceline.com for advertising on its websites; and (4) revenues generated by Booking.com's BookingSuite branded hotel marketing services. Revenue from KAYAK is net of intercompany revenues earned by KAYAK from other Priceline Group brands.

	Three Months Ended September 30, (in thousands)						Nine Months Ended September 30, (in thousands)
	2015		2014		Change		2015		2014		Change
Agency Revenues	$	2,345,673	$	2,099,629	11.7	%	$	5,127,174	$	4,615,169	11.1	%
Merchant Revenues	596,503		613,535		(2.8	)%	1,637,191		1,707,786		(4.1	)%
Advertising and Other Revenues	160,725		123,333		30.3	%	459,627		278,919		64.8	%
Total Revenues	$	3,102,901	$	2,836,497	9.4	%	$	7,223,992	$	6,601,874	9.4	%

Agency Revenues

Agency revenues for the three and nine months ended September 30, 2015 increased 11.7% and 11.1%, respectively, compared to the three and nine months ended September 30, 2014, primarily as a result of growth in the business of Booking.com, the agency hotel businesses of priceline.com and agoda.com and the agency rental car businesses of rentalcars.com and priceline.com. The U.S. Dollar is significantly stronger against the Euro and many other currencies as of

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September 30, 2015 compared to 2014. At these exchange rates, the growth of our agency revenues, expressed in U.S. Dollars, has been and will continue to be significantly adversely impacted through the remainder of 2015.

Merchant Revenues

Merchant revenues for the three and nine months ended September 30, 2015 decreased 2.8% and 4.1%, respectively, compared to the three and nine months ended September 30, 2014, primarily due to decreases in revenues from priceline.com's Name Your Own Price^®hotel, airline ticket and rental car reservation services, partially offset by increases in our merchant price-disclosed hotel and rental car businesses. Our priceline.com Name Your Own Price^® reservation services, which declined year-over-year, are recorded "gross" with a corresponding travel service provider cost recorded in cost of revenues. Our other merchant revenues, which grew year-over-year, are recorded in revenue "net" of travel service provider costs. As a result, changes in Name Your Own Price^® reservation revenue disproportionately affect merchant revenues as compared to our other merchant revenues. We therefore believe that gross profit is an important measure of evaluating growth in our business. The U.S. Dollar is significantly stronger against the Euro and many other currencies as of September 30, 2015 compared to 2014. At these exchange rates, the growth of our merchant revenues, expressed in U.S. Dollars, has been and will continue to be significantly adversely impacted through the remainder of 2015.

Advertising and Other Revenues

Advertising and other revenues during the three and nine months ended September 30, 2015 consisted primarily of advertising revenues, restaurant reservation revenues and subscription revenues for restaurant reservation management services. Other revenues for the three and nine months ended September 30, 2015 includes $64.8 million and $187.5 million, respectively, of OpenTable revenue. Other revenues for the three and nine months ended September 30, 2014 included $41.2 million of OpenTable revenue earned since its acquisition on July 24, 2014.

Cost of Revenues

	Three Months Ended September 30, (in thousands)						Nine Months Ended September 30, (in thousands)
	2015		2014		Change		2015		2014		Change
Cost of Revenues	$	155,619	$	216,519	(28.1	)%	$	511,568	$	692,429	(26.1	)%

For the three and nine months ended September 30, 2015, cost of revenues consisted primarily of: (1) the cost paid to travel service providers for priceline.com's Name Your Own Price^® reservation services, net of applicable taxes and charges; (2) fees paid to third parties by KAYAK and priceline.com to return travel itinerary information for customer search queries; and (3) costs related to accruals for travel transaction taxes (e.g., hotel occupancy taxes, excise taxes, sales taxes, etc.). Cost of revenues for the three and nine months ended September 30, 2015 decreased by 28.1% and 26.1%, respectively, compared to the three and nine months ended September 30, 2014, primarily due to a decrease in priceline.com's Name Your Own Price^® reservation services. For the nine months ended September 30, 2015, cost of revenue benefited from a reversal of previously accrued travel transaction taxes of $16.4 million (including estimated interest and penalties) recorded in the first quarter of 2015 related to a favorable ruling in the State of Hawaii. For the three and nine months ended September 30, 2015, we recognized a net reduction in cost of revenue in the third quarter of 2015 of $13.7 million related to travel transaction taxes, principally due to a cash refund from the State of Hawaii for the aforementioned favorable ruling.

Agency revenues have no cost of revenue. Agency revenues principally consist of travel commissions on accommodation reservations.

Gross Profit

	Three Months Ended September 30, (in thousands)								Nine Months Ended September 30, (in thousands)
	2015			2014			Change		2015			2014			Change
Gross Profit	$	2,947,282		$	2,619,978		12.5	%	$	6,712,424		$	5,909,445		13.6	%
Gross Margin	95.0		%	92.4		%			92.9		%	89.5		%

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Total gross profit for the three and nine months ended September 30, 2015 increased by 12.5% and 13.6%, respectively, compared to the three and nine months ended September 30, 2014 (growth on a constant currency basis was approximately 29% for both the three and nine months), primarily as a result of the increased revenue discussed above.  Total gross margin (gross profit as a percentage of total revenue) increased during the three and nine months ended September 30, 2015 compared to the three and nine months ended September 30, 2014, because our revenues are disproportionately affected by priceline.com's Name Your Own Price^® reservation services. Name Your Own Price^® revenues are recorded "gross" with a corresponding travel service provider cost recorded in cost of revenues, and in the three and nine months ended September 30, 2015 these revenues represented a smaller percentage of total revenues than in the three and nine months ended September 30, 2014. Our retail and semi-opaque reservation services, which are recorded in revenue "net" of travel service provider costs, have been growing faster than priceline.com's Name Your Own Price^®reservation services. As a result, we believe that gross profit is an important measure for evaluating growth in our business.

Our international operations accounted for approximately $2.6 billion and $5.8 billion of our gross profit for the three and nine months ended September 30, 2015, respectively, which compares to $2.3 billion and $5.2 billion, respectively, for the three and nine months ended September 30, 2014. Gross profit attributable to our international operations increased by 11.4% for both the three and nine months ended September 30, 2015 compared to the three and nine months ended September 30, 2014 (growth on a constant currency basis was approximately 29% and 28% for the three and nine months, respectively). Gross profit attributable to our U.S. businesses increased by 21.9% and 29.8% for the three and nine months ended September 30, 2015 compared to the three and nine months ended September 30, 2014. Gross profit for the three and nine months ended September 30, 2015 was positively impacted by the inclusion of OpenTable, which benefited year-over-year comparisons through the anniversary of the acquisition on July 24, 2015. In addition, gross profit for the nine months ended September 30, 2015 was positively impacted by a reversal of previously accrued travel transaction taxes of $16.4 million (including estimated interest and penalties) recorded in the first quarter of 2015 related to a favorable ruling in the State of Hawaii. Gross profit for the three and nine months ended September 30, 2015 was also positively impacted by a net reduction in cost of revenue in the third quarter of 2015 of $13.7 million related to travel transaction taxes, principally due to a cash refund from the State of Hawaii for the aforementioned favorable ruling.

The U.S. Dollar is significantly stronger against the Euro and many other currencies as of September 30, 2015 compared to 2014. At these exchange rates, the growth of our total and international gross profit, expressed in U.S. Dollars, has been and will continue to be significantly adversely impacted through the remainder of 2015.

Operating Expenses

Advertising

	Three Months Ended September 30, (in thousands)								Nine Months Ended September 30, (in thousands)
	2015			2014			Change		2015			2014			Change
Online Advertising	$	801,147		$	699,814		14.5	%	$	2,215,181		$	1,860,317		19.1	%
% of Total Gross Profit	27.2		%	26.7		%			33.0		%	31.5		%
Offline Advertising	$	51,440		$	71,593		(28.1	)%	$	181,325		$	183,093		(1.0	)%
% of Total Gross Profit	1.7		%	2.7		%			2.7		%	3.1		%

Online advertising expenses consist primarily of the costs of (1) search engine keyword purchases; (2) referrals from meta-search and travel research websites; (3) affiliate programs; and (4) banner, pop-up and other Internet and mobile advertisements. For the three and nine months ended September 30, 2015, online advertising expenses increased over the three and nine months ended September 30, 2014, primarily to generate increased gross bookings. Online advertising as a percentage of gross profit for the three and nine months ended September 30, 2015 benefited from the inclusion of OpenTable because OpenTable spends a lower percentage of gross profit on online advertising relative to our other brands. In addition, the share of our business coming directly to our websites with no associated online advertising expense increased during the three and nine months ended September 30, 2015 compared to the three and nine months ended September 30, 2014. These favorable impacts were more than offset for the three and nine months ended September 30, 2015 by a year-over-year decline in advertising ROIs, a trend that we expect to continue.

Offline advertising expenses are primarily related to our Booking.com, KAYAK and priceline.com businesses and primarily consist of television advertising. For the three and nine months ended September 30, 2015, offline advertising

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decreased by 28.1% and 1.0%, respectively, compared to the three and nine months ended September 30, 2014, primarily due to lower spending at KAYAK and, to a lesser extent, priceline.com.

Sales and Marketing

	Three Months Ended September 30, (in thousands)								Nine Months Ended September 30, (in thousands)
	2015			2014			Change		2015			2014			Change
Sales and Marketing	$	93,069		$	86,092		8.1	%	$	269,536		$	225,456		19.6	%
% of Total Gross Profit	3.2		%	3.3		%			4.0		%	3.8		%

Sales and marketing expenses consist primarily of (1) credit card processing fees associated with merchant transactions; (2) fees paid to third parties that provide call center, website content translations and other services; (3) customer relations costs; (4) provisions for credit card chargebacks; (5) provisions for bad debt, primarily related to agency accommodation commission receivables; and (6) public relations costs. For the three and nine months ended September 30, 2015, sales and marketing expenses, which are substantially variable in nature, increased compared to the three and nine months ended September 30, 2014 due primarily to increased gross booking volumes, customer relations costs and the inclusion of OpenTable since its acquisition on July 24, 2014.

Personnel

	Three Months Ended September 30, (in thousands)								Nine Months Ended September 30, (in thousands)
	2015			2014			Change		2015			2014			Change
Personnel	$	305,329		$	259,471		17.7	%	$	853,469		$	675,854		26.3	%
% of Total Gross Profit	10.4		%	9.9		%			12.7		%	11.4		%

Personnel expenses consist of compensation to our personnel, including salaries, stock-based compensation, bonuses, payroll taxes and employee health benefits. Personnel expenses increased during the three and nine months ended September 30, 2015 compared to the three and nine months ended September 30, 2014 due primarily to increased headcount to support the growth of our businesses. Additionally, the inclusion of OpenTable in our consolidated results since its acquisition on July 24, 2014 contributed to this increase in personnel expenses for the three and nine months ended September 30, 2015 compared to the three and nine months ended September 30, 2014.

Stock-based compensation expense was $58.3 million and $172.4 million for the three and nine months ended September 30, 2015 compared to $46.1 million and $120.1 million for the three and nine months ended September 30, 2014.

General and Administrative

	Three Months Ended September 30, (in thousands)								Nine Months Ended September 30, (in thousands)
	2015			2014			Change		2015			2014			Change
General and Administrative	$	109,706		$	97,902		12.1	%	$	308,829		$	261,950		17.9	%
% of Total Gross Profit	3.7		%	3.7		%			4.6		%	4.4		%

General and administrative expenses consist primarily of: (1) occupancy and office expenses; (2) personnel-related expenses such as travel, recruiting and training expenses; and (3) fees for outside professionals, including litigation expenses. General and administrative expenses increased during the three and nine months ended September 30, 2015 compared to the three and nine months ended September 30, 2014, due to $7.7 million of expense for a fair value adjustment to the contingent liability related to an acquisition, higher occupancy and office expenses related to the expansion of our international businesses and higher personnel-related expenses related to increased headcount in all of our businesses. Additionally, the inclusion of OpenTable in our consolidated results since its acquisition on July 24, 2014 contributed to the increase in general and administrative expenses for the three and nine months ended September 30, 2015 compared to the three and nine months ended September 30, 2014.

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Information Technology

	Three Months Ended September 30, (in thousands)								Nine Months Ended September 30, (in thousands)
	2015			2014			Change		2015			2014			Change
Information Technology	$	28,830		$	24,802		16.2	%	$	81,347		$	72,068		12.9	%
% of Total Gross Profit	1.0		%	0.9		%			1.2		%	1.2		%

Information technology expenses consist primarily of: (1) software license and system maintenance fees; (2) data communications and other expenses associated with operating our services; (3) outsourced data center costs; and (4) payments to outside consultants. Information technology expense increased during the three and nine months ended September 30, 2015 compared to the three and nine months ended September 30, 2014, due primarily to growth in our worldwide operations. Additionally, the inclusion of OpenTable in our consolidated results since its acquisition on July 24, 2014 contributed to the increase in information technology expenses for the three and nine months ended September 30, 2015 compared to the three and nine months ended September 30, 2014.

Depreciation and Amortization

	Three Months Ended September 30, (in thousands)								Nine Months Ended September 30, (in thousands)
	2015			2014			Change		2015			2014			Change
Depreciation and Amortization	$	69,054		$	57,599		19.9	%	$	201,730		$	136,262		48.0	%
% of Total Gross Profit	2.3		%	2.2		%			3.0		%	2.3		%

Depreciation and amortization expenses consist of: (1) amortization of intangible assets with determinable lives; (2) depreciation on computer equipment; (3) depreciation of leasehold improvements, furniture and fixtures and office equipment; and (4) depreciation of internally developed and purchased software. For the three and nine months ended September 30, 2015, depreciation and amortization expense increased compared to the three and nine months ended September 30, 2014 due primarily to increased intangible amortization from the OpenTable acquisition and increased depreciation expense due to capital expenditures for additional data center capacity and office build-outs to support growth and geographic expansion, principally related to our Booking.com business. Additionally, the inclusion of OpenTable in our consolidated results since its acquisition on July 24, 2014 contributed to the increase in depreciation expense for the three and nine months ended September 30, 2015 compared to the three and nine months ended September 30, 2014.

Other Income (Expense)

	Three Months Ended September 30, (in thousands)								Nine Months Ended September 30, (in thousands)
	2015			2014			Change		2015			2014			Change
Interest Income	$	14,682		$	2,490		489.6	%	$	39,315		$	5,165		661.2	%
Interest Expense	(41,436		)	(22,953		)	80.5	%	(116,462		)	(57,804		)	101.5	%
Foreign Currency Transactions and   Other	(5,783		)	3,347			(272.8	)%	(12,070		)	(4,399		)	174.4	%
Total	$	(32,537	)	$	(17,116	)	90.1	%	$	(89,217	)	$	(57,038	)	56.4	%

For the three and nine months ended September 30, 2015, interest income on cash and marketable securities increased compared to the three and nine months ended September 30, 2014, primarily due to higher yields and an increase in the average invested balance.

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Interest expense increased for the three and nine months ended September 30, 2015 as compared to the three and nine months ended September 30, 2014, primarily due to interest expense attributable to our Senior Notes issued in August 2014, September 2014 and March 2015, partially offset by the maturity of our 1.25% Convertible Senior Notes in March 2015. The termination of the revolving credit facility entered into in October 2011 resulted in a charge to interest expense of$1.0 million in June 2015 to write off the remaining unamortized debt issuance costs (see Note 8).

Derivative contracts that hedge our exposure to the impact of currency fluctuations on the translation of our international operating results into U.S. Dollars upon consolidation resulted in foreign exchange losses of $6.4 million and $6.2 million for the three and nine months ended September 30, 2015, respectively, compared to foreign exchange gains of $8.3 million and $12.5 million for the three and nine months ended September 30, 2014, respectively, and are recorded in "Foreign currency transactions and other" in the Unaudited Consolidated Statements of Operations.

Foreign exchange transaction losses, including costs related to foreign exchange transactions, resulted in gains of $1.1 million and losses of $8.5 million for the three and nine months ended September 30, 2015, respectively, compared to foreign exchange losses of $5.8 million and $11.8 million for the three and nine months ended September 30, 2014, respectively, and are recorded in "Foreign currency transactions and other" in the Unaudited Consolidated Statements of Operations.

For the three and nine months ended September 30, 2015, we recognized $0.3 million of net realized losses and $3.1 million of net realized gains, respectively, related to investments, which are recorded in "Foreign currency transactions and other" in the Unaudited Consolidated Statements of Operations.

The conversion of our convertible debt prior to maturity in the three and nine months ended September 30, 2014 resulted in non-cash losses of $0.2 million and $6.3 million, respectively, and are recorded in "Foreign currency transactions and other" in the Unaudited Consolidated Statements of Operations.

Income Taxes

	Three Months Ended September 30, (in thousands)						Nine Months Ended September 30, (in thousands)
	2015		2014		Change		2015		2014		Change
Income Tax Expense	$	259,438	$	243,336	6.6	%	$	464,699	$	467,485	(0.6	)%

Our effective tax rates for the three and nine months ended September 30, 2015 were 17.8% and 18.5%, respectively, compared to 18.6% and 19.2% for the three and nine months ended September 30, 2014. Our effective tax rate differs from the U.S. federal statutory tax rate of 35%, due to lower tax rates outside the United States, partially offset by U.S. state income taxes and certain non-deductible expenses. Our effective tax rate was lower for the three and nine months ended September 30, 2015, compared to the three and nine months ended September 30, 2014, due to an increased proportion of our income being taxed at lower international tax rates. According to Dutch corporate income tax law, income generated from qualifying innovative activities is taxed at a rate of 5% ("Innovation Box Tax") rather than the Dutch statutory rate of 25%. A portion of Booking.com's earnings during the three and nine months ended September 30, 2015 and 2014 qualified for Innovation Box Tax treatment, which had a significant beneficial impact on the Company's effective tax rate for those periods. While we expect Booking.com to continue to qualify for Innovation Box Tax treatment with respect to a portion of its earnings for the foreseeable future, the loss of the Innovation Box Tax benefit, whether due to a change in tax law or a determination by the Dutch government that Booking.com's activities are not "innovative" or for any other reason, would substantially increase our effective tax rate and adversely impact our results of operations.

Until our U.S. net operating loss carryforwards are utilized or expire, most of our U.S. income will not be subject to a cash tax liability, other than federal alternative minimum tax and state income taxes. However, we expect to pay foreign taxes on our international income except in countries where we have operating loss carryforwards. We expect that our international operations will grow their pretax income faster than the U.S. business over the long term and, therefore, it is our expectation that our cash tax payments will increase as our international businesses generate an increasing share of our pretax income.

We will be subject to increased income taxes in the event that our cash balances held outside the United States are remitted to the United States. As of September 30, 2015, we held approximately $8.7 billion of cash, cash equivalents, short-term investments and long-term investments outside of the United States. We currently intend to use our cash held outside the United States to reinvest in our international operations. If our cash balances outside the United States continue to grow and our ability to reinvest those balances outside the United States diminishes, under U.S. GAAP we will be obligated to record

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additional income tax expense in the United States with respect to our unremitted international earnings. We would not make additional income tax payments unless we were to actually repatriate our international cash to the United States. We would pay only U.S. federal alternative minimum tax and certain U.S. state income taxes as long as we have net operating loss carryforwards available to offset our U.S. taxable income. This could result in us being subject to a cash income tax liability on the earnings of our U.S. businesses sooner than would otherwise have been the case.

Liquidity and Capital Resources

As of September 30, 2015, we had $9.4 billion in cash, cash equivalents, short-term investments and long-term investments. Approximately $8.7 billion is held by our international subsidiaries and is denominated primarily in U.S. Dollars, Euros and, to a lesser extent, British Pounds Sterling and other currencies. We currently intend to indefinitely reinvest these funds outside of the United States. If we repatriate cash to the United States, we would utilize our net operating loss carryforwards and beyond that amount incur additional tax payments in the United States. Cash equivalents, short-term investments and long-term investments are comprised of U.S. and foreign corporate bonds, U.S. and foreign government securities, high-grade commercial paper, U.S. government agency securities, foreign equity securities and bank deposits.

On May 26, 2015, we invested $250 million in five-year senior convertible notes issued at par by Ctrip.com International Ltd. ("Ctrip"). Additionally, as of September 30, 2015, we had invested $584.1 million in Ctrip American Depositary Shares ("ADSs"), which includes $22.1 million settled in October 2015. In October 2015, we invested an additional $46.2 million in Ctrip ADSs.

In June 2015, we entered into a $2.0 billion five-year unsecured revolving credit facility with a group of lenders. Borrowings under the revolving credit facility will bear interest, at our option, at a rate per annum equal to either (i) the adjusted LIBOR for the interest period in effect for such borrowing plus an applicable margin ranging from 0.875% to 1.50%; or the greatest of (a) Bank of America, N.A.'s prime lending rate, (b) the federal funds rate plus 0.50%, and (c) an adjusted LIBOR for an interest period of one month plus 1.00%, plus an applicable margin ranging from 0.00% to 0.50%. Undrawn balances available under the revolving credit facility are subject to commitment fees at the applicable rate ranging from 0.085% to 0.20%.

The revolving credit facility provides for the issuance of up to $70.0 million of letters of credit as well as borrowings of up to $50.0 million on same-day notice, referred to as swingline loans. Borrowings under the revolving credit facility may be made in U.S. Dollars, Euros, British Pounds Sterling and any other foreign currency agreed to by the lenders. The proceeds of loans made under the facility will be used for working capital and general corporate purposes. As of September 30, 2015, there were no borrowings outstanding and approximately $2.5 million of letters of credit issued under the facility. In October 2015, we borrowed $100.0 million under this revolving credit facility.

During the nine months ended September 30, 2015, we repurchased 1,897,446 shares of our common stock for an aggregate cost of $2.3 billion. As of September 30, 2015, we had a remaining authorization in the amount of $748.8 million from our Board of Directors to purchase our common stock. Stock repurchases in September 2015 of 57,241 shares for an aggregate cost of $68.4 million were settled in October 2015. During the period from October 1, 2015 through October 30, 2015, we repurchased 397,038 additional shares for an aggregate cost of $519.6 million. We may from time to time make additional repurchases of our common stock, depending on prevailing market conditions, alternate uses of capital and other factors.

In September 2015, we paid $18.4 million to settle a contingent liability related to an acquisition. The portion of the payment related to the acquisition-date estimated fair value of $10.7 million is shown as a financing activity and the remaining portion of the payment for $7.7 million, which was charged to operating expense as a fair value adjustment, is included as an operating activity on the Unaudited Consolidated Statement of Cash Flows for the nine months ended September 30, 2015.

In March 2015, we issued 1.0 billion Euro aggregate principal amount of Senior Notes due 2027, with an interest rate of 1.8%. Interest on the notes is payable annually on March 3, beginning March 3, 2016. In addition, in March 2015, we issued $500 million aggregate principal amount of Senior Notes due 2025, with an interest rate of 3.65%. Interest on the 2025 Notes is payable semi-annually on March 15 and September 15, beginning September 15, 2015. The net proceeds of these notes were used for general corporate purposes. See Note 8 to the Unaudited Consolidated Financial Statements for further details on these notes.

For the three months ended March 31, 2015, in connection with the maturity or conversion prior to maturity of the remaining outstanding 1.25% Convertible Senior Notes due March 15, 2015, we paid $37.5 million to satisfy the aggregate

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principal amount due and paid an additional $110.1 million in satisfaction of the conversion value in excess of the principal amount.

Our merchant transactions are structured such that we collect cash up front from our customers and then we pay most of our travel service providers at a subsequent date. We therefore tend to experience significant swings in accounts receivable, deferred merchant bookings and travel service provider payables seasonally depending on the absolute level of our merchant transactions during the last few weeks of every quarter.

Net cash provided by operating activities for the nine months ended September 30, 2015 was $2.2 billion, resulting from net income of $2.0 billion and a favorable impact of $385.1 million for non-cash items not affecting cash flows, partially offset by net unfavorable changes in working capital and other assets and liabilities of $211.1 million. For the nine months ended September 30, 2015, prepaid expenses and other current assets increased by $86.8 million, primarily related to a prepayment of 2015 income taxes in the first six months by Booking.com to earn a prepayment discount. For the nine months ended September 30, 2015, accounts receivable increased $289.6 million and accounts payable, accrued expenses and other current liabilities increased by $191.9 million, primarily related to seasonality and increases in business volumes. Our bookings and revenues are generally higher in the third quarter of the year than in the fourth quarter of the year which typically results in higher accounts receivable, accounts payable and accrued expenses at September 30 compared to December 31. Deferred merchant bookings decreased by $50.9 million for the nine months ended September 30, 2015, primarily due to the seasonality of our agoda.com business, which experiences the highest levels of booking and travel consumption in the first and fourth quarters combined with an initiative which allows their customers to pay near the time of travel rather than at the time of making a reservation. Non-cash items were principally associated with stock-based compensation expense, depreciation and amortization, amortization of debt discount of our convertible notes and deferred income taxes.

Net cash provided by operating activities for the nine months ended September 30, 2014 was $2.2 billion, resulting from net income of $2.0 billion and a favorable impact of $368.1 million for non-cash items not affecting cash flows, partially offset by net unfavorable changes in working capital and other assets and liabilities of $178.9 million. For the nine months ended September 30, 2014, accounts receivable increased $353.4 million and accounts payable, accrued expenses and other current liabilities increased by $209.6 million. The increase in these working capital balances was primarily related to seasonality and increases in business volumes. Non-cash items were principally associated with stock-based compensation expense, depreciation and amortization, amortization of debt discount of our convertible notes and deferred income taxes.

Net cash used in investing activities was $2.7 billion for the nine months ended September 30, 2015. Investing activities for the nine months ended September 30, 2015 were affected by net purchases of investments of $2.4 billion, $135.7 million used for acquisitions, net of cash acquired, partially offset by net proceeds of $5.2 million for the settlement of foreign currency contracts. Net cash used in investing activities was $282 million for the nine months ended September 30, 2014. Investing activities for the nine months ended September 30, 2014 were affected by $2.5 billion used for acquisitions, net of cash acquired, and net payments of $80.3 million for the settlement of foreign currency contracts, mostly offset by net sales of investments of $2.4 billion.  Cash invested in purchase of property and equipment was $126.6 million and $90.7 million in the nine months ended September 30, 2015 and 2014, respectively.

Net cash used in financing activities was $709.2 million for the nine months ended September 30, 2015. Cash used in financing activities for the nine months ended September 30, 2015 primarily consisted of treasury stock purchases of $2.3 billion, payments of $147.6 million related to the conversion of Senior Notes, payment of $13.5 million related to debt issuance cost and payment of $10.7 million related to the settlement of the acquisition-date estimated contingent liability related to an acquisition, partially offset by the total proceeds of $1.6 billion from the issuance of Senior Notes, excess tax benefits from stock-based compensation of $90.9 million and the exercise of employee stock options of $19.1 million. Net cash provided by financing activities was $1.9 billion for the nine months ended September 30, 2014. The cash provided by financing activities for the nine months ended September 30, 2014 primarily consisted of total proceeds of $2.3 billion from the issuance of Convertible Senior Notes and Euro denominated Senior Notes, the exercise of employee stock options of $12.4 million and excess tax benefits from stock-based compensation of $14.1 million, partially offset by treasury stock purchases of $245.5 million and payments of $121.9 million related to the conversion of senior notes.

Contingencies

A number of U.S. jurisdictions have initiated lawsuits against online travel companies, including us, related to, among other things, the payment of travel transaction taxes (e.g., hotel occupancy taxes, excise taxes, sales taxes, etc.). In addition, a number of U.S. states, counties and municipalities have initiated audit proceedings, issued proposed tax assessments or started inquiries relating to the payment of travel transaction taxes. To date, the majority of taxing jurisdictions in which we facilitate the making of travel reservations have not asserted that taxes are due and payable on our travel services. With respect to

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jurisdictions that have not initiated proceedings to date, it is possible that they will do so in the future or that they will seek to amend their tax statutes and seek to collect taxes from us only on a prospective basis. For additional information, see Note 12 to the Unaudited Consolidated Financial Statements and Part II Item 1A Risk Factors- "Adverse application of U.S. state and local tax laws could have an adverse effect on our business and results of operations" in this Quarterly Report.

As a result of this litigation and other attempts by U.S. jurisdictions to levy similar taxes, we have established an accrual for the potential resolution of issues related to travel transaction taxes in the amount of approximately $27 million at September 30, 2015 and $52 million at December 31, 2014. A March 2015 ruling by the Hawaii Supreme Court significantly reduced the Company's (and other OTCs') liability and as a result the Company reduced its accrual for travel transaction taxes (including estimated interest and penalties) by $16.4 million with a corresponding reduction to cost of revenues in the first quarter of 2015. The accrual is based on our estimate of the probable cost of resolving these issues. Our legal expenses for these matters are expensed as incurred and are not reflected in the amount accrued. The actual cost may be less or greater, potentially significantly, than the liabilities recorded. An estimate for a reasonably possible loss or range of loss in excess of the amount accrued cannot be reasonably made. If we were to suffer adverse determinations in the near term in more of the pending proceedings than currently anticipated given results to date, because of our available cash we believe that it would not have a material impact on our liquidity.

French tax authorities have been conducting an audit of the years 2006 through 2012 to determine whether we are in compliance with our tax obligations in France, and we currently expect to receive a formal assessment in the fourth quarter of 2015.  While we believe that we have been, and continue to be, in compliance with French tax law, as a result of the audit we expect the French tax authorities to claim that Booking.com has a permanent establishment in France and seek to recover unpaid income taxes and VAT of approximately 350 million Euros, the majority of which would represent penalties and interest.  We intend to contest any such assessment. If we are unable to resolve the matter with the French authorities, we would expect to challenge the assessment in the French courts. In order to contest the assessment in court, we would be required to pay, upfront, the full amount of any such assessment, though any such payment would not constitute an admission by us that we owe the taxes. French authorities may decide to also audit subsequent tax years, which could result in additional assessments.

In general, governments in the United States and Europe are increasingly focused on ways to increase tax revenues, which has contributed to an increase in audit activity and harsher stances taken by tax authorities.  Any such additional taxes or other assessments may be in excess of our current tax provisions or may require us to modify our business practices in order to reduce our exposure to additional taxes going forward, any of which could have a material adverse effect on our business, results of operations and financial condition.

Off-Balance Sheet Arrangements

As of September 30, 2015, we did not have any off-balance sheet arrangements that have, or are reasonably likely to have, a current or future effect on our financial condition, results of operations, liquidity, capital expenditures or capital resources.

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

Sections of this Form 10-Q including, in particular, our Management's Discussion and Analysis of Financial Condition and Results of Operations above and the Risk Factors contained in Part II Item 1A hereof, contain forward-looking statements.  These forward-looking statements reflect the views of our management regarding current expectations and projections about future events and are based on currently available information. These forward-looking statements are not guarantees of future performance and are subject to risks, uncertainties and assumptions that are difficult to predict; therefore, actual results could differ materially from those described in the forward-looking statements.

Expressions of future goals and expectations and similar expressions, including "may," "will," "should," "could," "expects," "plans," "anticipates," "intends," "believes," "estimates," "predicts," "potential," "targets," or "continue," reflecting something other than historical fact are intended to identify forward-looking statements.  Our actual results could differ materially from those described in the forward-looking statements for various reasons including the risks we face which are more fully described in Part II Item 1A, Risk Factors.  Unless required by law, we undertake no obligation to update publicly any forward-looking statements, whether as a result of new information, future events or otherwise.  However, readers should carefully review the reports and documents we file or furnish from time to time with the Securities and Exchange Commission, particularly our Annual Report on Form 10-K for the year ended December 31, 2014, and our subsequent Quarterly Reports on Form 10-Q and Current Reports on Form 8-K.

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Item 3. Quantitative and Qualitative Disclosures About Market Risk

We manage our exposure to interest rate risk and foreign currency risk through internally established policies and procedures and, when deemed appropriate, through the use of derivative financial instruments. We use foreign exchange derivative contracts to manage short-term foreign currency risk.

The objective of our policies is to mitigate potential income statement, cash flow and fair value exposures resulting from possible future adverse fluctuations in rates. We evaluate our exposure to market risk by assessing the anticipated near-term and long-term fluctuations in interest rates and foreign exchange rates. This evaluation includes the review of leading market indicators, discussions with financial analysts and investment bankers regarding current and future economic conditions and the review of market projections as to expected future rates. We utilize this information to determine our own investment strategies as well as to determine if the use of derivative financial instruments is appropriate to mitigate any potential future market exposure that we may face. Our policy does not allow speculation in derivative instruments for profit or execution of derivative instrument contracts for which there are no underlying exposures. We do not use financial instruments for trading purposes and are not a party to any leveraged derivatives. To the extent that changes in interest rates and currency exchange rates affect general economic conditions, we would also be affected by such changes.

We did not experience any material changes in interest rate exposures during the three months ended September 30, 2015. Based upon economic conditions and leading market indicators at September 30, 2015, we do not foresee a significant adverse change in interest rates in the near future.

Fixed rate investments are subject to unrealized gains and losses due to interest rate volatility. We performed a sensitivity analysis to determine the impact a change in interest rates would have on the fair value of our available-for-sale investments assuming an adverse change of 100 basis points. A hypothetical 100 basis point (1.0%) increase in interest rates would have resulted in a decrease in the fair values of our investments as of September 30, 2015 of approximately $111 million. These hypothetical losses would only be realized if we sold the investments prior to their maturity.

As of September 30, 2015, the outstanding aggregate principal amount of our debt was approximately $5.7 billion. We estimate that the market value of such debt was approximately $6.1 billion as of September 30, 2015. A substantial portion of the market value of our debt in excess of the outstanding principal amount is related to the conversion premium on our outstanding convertible notes.

We conduct a significant portion of our business outside the United States through subsidiaries with functional currencies other than the U.S. Dollar (primarily Euros). As a result, we face exposures to adverse movements in currency exchange rates as the operating results of our international operations are translated from local currency into U.S. Dollars upon consolidation. If the U.S. Dollar weakens against the local currency, the translation of these foreign-currency-denominated balances will result in increased net assets, gross bookings, gross profit, operating expenses, and net income. Similarly, our net assets, gross bookings, gross profit, operating expenses, and net income will decrease if the U.S. Dollar strengthens against the local currency. Additionally, foreign exchange rate fluctuations on transactions, denominated in currencies other than the functional currency, result in gains and losses that are reflected in the Unaudited Consolidated Statements of Operations.

The U.S. Dollar significantly strengthened against the Euro during 2014, moving from an exchange rate of 1.38 U.S. Dollars per Euro as of January 1, 2014 to 1.21 U.S. Dollars per Euro as of December 31, 2014. The U.S. Dollar has strengthened further in 2015 to an exchange rate of 1.12 U.S. Dollars per Euro as of September 30, 2015. The U.S. Dollar also strengthened significantly during this time frame as compared to many other currencies. As a result, our foreign currency denominated net assets, gross bookings, gross profit, operating expenses and net income have been negatively impacted as expressed in U.S. Dollars. Since our expenses are generally denominated in foreign currencies on a basis similar to our revenues, our operating margins are not significantly impacted by currency fluctuations. The aggregate principal value of the Euro-denominated 2024 Notes and 2027 Notes, and accrued interest thereon, provide a natural hedge of the net assets of certain of our Euro functional currency subsidiaries.

From time to time, we enter into foreign exchange derivative contracts to minimize the impact of short-term foreign currency fluctuations on our consolidated operating results. These derivative contracts principally address foreign exchange fluctuation risk for the Euro and the British Pound Sterling versus the U.S. Dollar. As of September 30, 2015 and December 31, 2014, there were no such outstanding derivative contracts. Foreign exchange losses of $6.4 million and $6.2 million for the three and nine months ended September 30, 2015, respectively, compared to foreign exchange gains of $8.3 million and $12.5 million for the three and nine months ended September 30, 2014, respectively, are recorded in "Foreign currency transactions and other" in the Unaudited Consolidated Statements of Operations.

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Item 4. Controls and Procedures

Under the supervision and with the participation of our management, including our principal executive officer and our principal financial officer, we conducted an evaluation of our disclosure controls and procedures, as such term is defined under Exchange Act Rule 13a-15(e).  Based on this evaluation, our principal executive officer and our principal financial officer concluded that our disclosure controls and procedures were effective as of the end of the period covered by this report.

No change in our internal control over financial reporting, as defined in Exchange Act Rule 13a-15(e), occurred during the three months ended September 30, 2015 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

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PART II - OTHER INFORMATION

Item 1. Legal Proceedings

A description of material legal proceedings to which we are a party, and updates thereto, is contained in Note 12 to our Unaudited Consolidated Financial Statements included in this Quarterly Report on Form 10-Q for the three months ended September 30, 2015, and is incorporated into this Item 1 by reference thereto.

Item 1A.  Risk Factors

The following risk factors and other information included in this Quarterly Report should be carefully considered.  The risks and uncertainties described below are not the only ones we face.  Additional risks and uncertainties not presently known to us or that we currently believe are immaterial may also impair our business, results of operations or financial condition.  If any of the following risks occur, our business, financial condition, operating results and cash flows could be materially adversely affected.

Declines or disruptions in the travel industry could adversely affect our business and financial performance.

Our financial results and prospects are significantly dependent upon the sale of travel services, particularly leisure travel. Travel, including accommodation (including hotels, bed and breakfasts, hostels, apartments, vacation rentals and other properties), rental car and airline ticket reservations, is dependent on discretionary spending levels. As a result, sales of travel services tend to decline during general economic downturns and recessions when consumers engage in less discretionary spending, are concerned about unemployment or inflation, have reduced access to credit or experience other concerns or effects that reduce their ability or willingness to travel. For example, the recent worldwide recession led to a weakening in the fundamental demand for our travel reservation services and an increase in the number of consumers who canceled existing travel reservations with us. Also during the recession, the accommodation industry experienced a significant decrease in occupancy rates and average daily rates ("ADRs"). While lower occupancy rates have historically resulted in accommodation providers increasing their distribution of accommodation reservations through third-party intermediaries such as us, our remuneration for accommodation reservation transactions changes proportionately with price, and therefore, lower ADRs generally have a negative effect on our accommodation reservation business and a negative effect on our gross profit. Further, during periods of higher occupancy rates, accommodation providers may decrease their distribution of accommodation reservations through third-party intermediaries like us, in particular through our discount services such as priceline.com's Name Your Own Price^® and Express Deals^®.

Many governments around the world, including the U.S. government and certain European governments, are operating at large financial deficits, resulting in high levels of sovereign debt in such countries. Greece, Ireland, Portugal and certain other European Union countries with high levels of sovereign debt at times have had difficulty refinancing their debt. Failure to reach political consensus regarding workable solutions to these issues has resulted in a high level of uncertainty regarding the future economic outlook. This uncertainty, as well as concern over governmental austerity measures including higher taxes and reduced government spending, could impair consumer spending and adversely affect travel demand. Greece, in particular, has recently faced and continues to face significant economic challenges, in large part due to its high levels of sovereign debt and difficulties re-financing that debt. Although Greece's newly elected government has accepted various austerity measures, it campaigned against austerity measures and in a recent referendum the Greek people rejected certain austerity measures. As a result, it is uncertain whether Greece's recent austerity measures and debt agreement with the European Union will result in a long-term solution to the country's debt crisis. This may increase the likelihood that Greece, and in turn other countries, could exit the European Union, which could lead to added economic uncertainty and further devaluation or eventual abandonment of the Euro common currency. At times, we have experienced volatility in transaction growth rates and weaker trends in hotel ADRs across many regions of the world, particularly in those European countries that appear to be most affected by economic uncertainties. We believe that these business trends are likely impacted by weak economic conditions and sovereign debt concerns. Disruptions in the economies of such countries could cause, contribute to or be indicative of deteriorating macro-economic conditions.

The uncertainty of macro-economic factors and their impact on consumer behavior, which may differ across regions, makes it more difficult to forecast industry and consumer trends and the timing and degree of their impact on our markets and business, which in turn could adversely affect our ability to effectively manage our business and adversely affect our results of operations.

In addition, other unforeseen events beyond our control, such as oil prices, terrorist attacks, unusual or extreme weather or natural disasters such as earthquakes, hurricanes, tsunamis, floods, droughts and volcanic eruptions, travel-related

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health concerns including pandemics and epidemics such as Ebola, Influenza H1N1, avian bird flu, SARS and MERS, political instability, regional hostilities, imposition of taxes or surcharges by regulatory authorities or travel-related accidents, can disrupt travel or otherwise result in declines in travel demand. Because these events or concerns are largely unpredictable, they can dramatically and suddenly affect travel behavior by consumers, and therefore demand for our services, which can adversely affect our business and results of operations. For example, our business and operations were negatively impacted by Hurricane Sandy, which disrupted travel in the northeastern United States in late 2012; a major earthquake, tsunami and nuclear emergency in Japan in 2011; severe flooding in Thailand in October 2011; and disruptive civil unrest in Thailand in 2010 and 2014. In addition, MERS has had an adverse impact on our business in northeast Asia in 2015. Future natural disasters, health concerns or civil or political unrest could further disrupt our business and operations and adversely affect our results of operations.

We face risks related to the growth rate and expansion of our international business.

We derive a substantial portion of our revenues, and have significant operations, outside the United States. Our international operations include the Netherlands-based accommodation reservation service Booking.com, the Asia-based accommodation reservation service agoda.com, the U.K.-based rental car reservation service rentalcars.com and, to a lesser extent, KAYAK's international meta-search services and OpenTable's international restaurant reservation business. Our international operations have achieved significant year-over-year growth in their gross bookings (an operating and statistical metric referring to the total dollar value, generally inclusive of all taxes and fees, of all travel services purchased by our customers). This growth rate, which has contributed significantly to our growth in consolidated revenue, gross profit and earnings, has declined, a trend we expect to continue as the absolute level of our gross bookings grows larger. Other factors may also slow the growth rates of our international businesses, including, for example, worldwide economic conditions, any strengthening of the U.S. Dollar versus the Euro and other currencies, declines in ADRs, increases in cancellations, adverse changes in travel market conditions and the competitiveness of the market. A decline in the growth rates of our international businesses could have a negative impact on our future consolidated revenue, gross profit and earnings growth rates and, as a consequence, our stock price.

Our strategy involves continued international expansion in regions throughout the world. Many of these regions have different economic conditions, customs, languages, currencies, consumer expectations, levels of consumer acceptance and use of the Internet for commerce, legislation, regulatory environments (including labor laws and customs), tax laws and levels of political stability, and we are subject to associated risks typical of international businesses. International markets may have strong local competitors with an established brand and travel service provider or restaurant relationships that may make expansion in that market difficult and costly and take more time than anticipated. In addition, compliance with legal, regulatory or tax requirements in multiple jurisdictions places demands on our time and resources, and we may nonetheless experience unforeseen and potentially adverse legal, regulatory or tax consequences. In some markets such as China, legal and other regulatory requirements may prohibit or limit participation by foreign businesses, such as by making foreign ownership or management of Internet or travel-related businesses illegal or difficult, or may make direct participation in those markets uneconomic, which could make our entry into and expansion in those markets difficult or impossible, require that we work with a local partner or result in higher operating costs. If we are unsuccessful in rapidly expanding in new and existing markets and effectively managing that expansion, our business, results of operations and financial condition could be adversely affected.

Certain markets in which we operate that are in earlier stages of development have lower operating margins compared to more mature markets, which could have a negative impact on our overall margins as these markets increase in size over time. Also, we intend to continue to invest in adding accommodations available for reservation on our websites, including hotels, bed and breakfasts, hostels and vacation rentals. Vacation rentals generally consist of, among others, properties categorized as single-unit and multi-unit villas, apartments, "aparthotels" (which are apartments with a front desk and cleaning service) and chalets and are generally self-catered (i.e., include a kitchen), directly bookable properties. Many of the newer accommodations we add to our travel reservation services, especially in highly penetrated markets, may have fewer rooms, lower ADRs or higher credit risk and may appeal to a smaller subset of consumers (e.g., hostels and bed and breakfasts), and therefore may also negatively impact our margins. For example, because a vacation rental is typically either a single unit or a small collection of independent units, vacation rental properties represent more limited booking opportunities than non-vacation rental properties, which generally have more units to rent per property. Our non-hotel accommodations in general may be subject to increased seasonality due to local tourism seasons, weather or other factors. As we increase our non-hotel accommodation business, these different market characteristics could negatively impact our profit margins; and, to the extent these properties represent an increasing percentage of the properties added to our websites, our gross bookings growth rate and property growth rate will likely diverge over time (since each such property has fewer booking opportunities). As a result of the foregoing, as the percentage of non-hotel accommodations increases, the number of reservations per property will likely decrease.

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We believe that the increase in the number of accommodation providers that participate on our websites, and the corresponding access to accommodation room nights, has been a key driver of the growth of our accommodation reservation business. The growth in our accommodation bookings typically makes us an attractive source of consumer demand for our accommodation providers. However, accommodation providers may wish to limit the amount of business that flows through a single distribution channel. As a result, we may experience constraints on the number of accommodation room nights available to us, which could negatively impact our growth rate and results of operations.

The number of our employees worldwide has grown from less than 700 in the first quarter of 2007, to approximately 15,500 as of September 30, 2015, which growth is mostly comprised of hires by our international operations. We may not be able to hire, train, retain, motivate and manage required personnel, which may limit our growth, damage our reputation, negatively affect our financial performance, and otherwise harm our business. In addition, expansion increases the complexity of our business and places additional strain on our management, operations, technical performance, financial resources and internal financial control and reporting functions. Our current and planned personnel, systems, procedures and controls may not be adequate to support and effectively manage this growth and our future operations, especially as we employ personnel in multiple geographic locations around the world.

Intense competition could reduce our market share and harm our financial performance.

We compete with both online and traditional travel and travel-related reservation and search services. The market for the travel reservation and search services we offer is intensely competitive, and current and new competitors can launch new services at a relatively low cost. Some of our current and potential competitors, such as Google, Apple, Alibaba, Amazon and Facebook, have access to significantly greater and more diversified resources than we do, and they may be able to leverage other aspects of their businesses (e.g., search or mobile device businesses) to enable them to compete more effectively with us. For example, Google has entered various aspects of the online travel market through its acquisition in 2011 of ITA Software, Inc., a major flight information software company, its hotel search and reservation booking business ("Book on Google") and its license of hotel-booking software from Room 77.

We currently, or may potentially in the future, compete with a variety of companies, including:

• online travel reservation services such as Expedia, Hotels.com, Hotwire, Orbitz, Travelocity, eLong, Wotif, Cheaptickets, ebookers, HotelClub, RatesToGo, CarRentals.com and Venere, which are owned by Expedia; laterooms, which is owned by Tui Travel; Hotel Reservation Service and hotel.de, which are owned by Hotel Reservation Service; and AutoEurope, Car Trawler, Ctrip, MakeMyTrip, Webjet, Rakuten, Jalan, Hotel Urbano, ViajaNet, Submarino Viagens, Despegar/Decolar, 17u.com, Bookit.com, CheapOair, Mr. and Mrs. Smith and eDreams ODIGEO;

• online accommodation search and/or reservation services, such as Airbnb and HomeAway (which has agreed to be acquired by Expedia), focused on vacation rental properties, including individually owned properties;

• large online companies, including search, social networking and marketplace companies such as Google, Facebook, Alibaba and Groupon;

• traditional travel agencies, wholesalers and tour operators, many of which combine physical locations, telephone services and online services, such as Carlson Wagonlit, American Express, Thomas Cook and Tui Travel, as well as thousands of individual travel agencies around the world;

• travel service providers such as accommodation providers, rental car companies and airlines, many of which have their own branded websites to which they drive business, including joint efforts by travel service providers such as Room Key, an online hotel reservation service owned by several major hotel companies;

• online travel search and price comparison services (generally referred to as "meta-search" services), such as TripAdvisor, trivago (in which Expedia has acquired a majority ownership interest), Qunar, Skyscanner and HotelsCombined; and

• online restaurant reservation services, such as TripAdvisor's LaFourchette and Yelp's SeatMe.

TripAdvisor, a leading travel research and review website, Google, the world's largest search engine, and other large, established companies with substantial resources and expertise in developing online commerce and facilitating Internet traffic have launched search, meta-search and/or reservation booking services and may create additional inroads into online travel,

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both in the United States and internationally. Meta-search services leverage their search technology to aggregate travel search results for the consumer's specific itinerary across travel service provider (e.g., accommodations, rental car companies or airlines), online travel company ("OTC") and other travel websites and, in many instances, compete directly with us for customers. Meta-search services intend to appeal to consumers by showing broader travel search results than may be available through OTCs or other travel websites, which could lead to travel service providers or others gaining a larger share of search traffic. TripAdvisor has begun supporting its meta-search service with offline advertising, and trivago, a leading meta-search service in Europe, has been aggressively advertising in the United States since 2013. Through our KAYAK meta-search service, we compete directly with other meta-search services. KAYAK depends on access to information related to travel service pricing, schedules, availability and other related information from OTCs and travel service providers. To the extent OTCs or travel service providers do not provide such information to KAYAK, KAYAK's business and results of operations could be harmed.

Consumers may favor travel services offered by meta-search websites or search companies over OTCs, which could reduce traffic to our travel reservation websites, increase consumer awareness of our competitors' brands and websites and increase our advertising and other customer acquisition costs. To the extent any such consumer behavior leads to growth in our KAYAK meta-search business, such growth may not result in sufficient increases in profits from our KAYAK meta-search business to offset any related decrease in profits experienced by our travel service reservation brands. Further, meta-search services may evolve into more traditional OTCs by offering consumers the ability to make travel reservations directly through their websites. For example, TripAdvisor facilitates hotel reservations on its transaction websites Tingo and Jetsetter and, with respect to some accommodations, allows consumers to make a reservation while staying on TripAdvisor through its "Instant Booking" offering. Instant Booking now includes participation from six out of the top 10 global hotel brands, including Marriott International, Hyatt Hotels and Best Western International. We recently agreed to participate in "Instant Booking," and we do not yet know how this participation will affect our business. For example, while we expect to benefit from incremental business generated through "Instant Booking," participation could cannibalize business that would otherwise come to us directly (including after a consumer first visits TripAdvisor) or through other channels, some of which may be more profitable to us than reservations generated through "Instant Booking." Other meta-search providers may also offer direct booking services with travel service providers, which may lead to more consumers booking directly with a travel service provider rather than an OTC. For example, Google recently announced the discontinuation of its Hotel Finder meta-search service in favor of integrating hotels directly into search results and encouraging users to book hotel reservations directly through Google's "Book on Google" service, which it is now expanding from mobile phones to both desktops and tablets. To the extent consumers book travel services through a service such as Google's "Book on Google," a meta-search website or directly with a travel service provider after visiting a meta-search website or meta-search utility on a traditional search engine without using an OTC like us, or if meta-search services limit our participation within their search results or evolve into more traditional OTCs, we may need to increase our advertising or other customer acquisition costs to maintain or grow our reservation bookings and our business, gross bookings and results of operations could be adversely affected.

Our OpenTable restaurant reservation business competes or may in the future compete with other restaurant reservation providers, such as LaFourchette, a European restaurant reservation business owned by TripAdvisor, and Yelp's SeatMe service.

Travel service providers, including multi-national hotel chains, rental car companies and airlines with which we conduct business, compete with us in online channels to drive consumers to their own websites in lieu of third-party distributors such as us. Travel service providers may charge lower prices and, in some instances, offer advantages such as loyalty points or special discounts to members of closed user groups (such as loyalty program participants or customers with registered accounts), any of which could make their offerings more attractive to consumers than our services. Discounting may increase as competition authorities seek to allow increased pricing flexibility among providers of travel service reservations. We may need to offer similar advantages to maintain or grow our reservation bookings, which could adversely impact our profitability.

There has been a proliferation of new channels through which accommodation providers can offer reservations.  For example, companies such as HomeAway and Airbnb offer services focused on providing vacation rental property owners, particularly individuals, an online place to list their accommodations where travelers can search and book such properties. Groupon offers discounted travel reservation services through "Groupon Getaways." Companies such as HotelTonight, Tingo (owned by TripAdvisor) and Hipmunk have developed differentiated offerings that endeavor to provide savings on accommodation reservations to consumers and that compete directly with us. Further, meta-search services may lower the cost for new companies to enter the market by providing a distribution channel without the cost of promoting the new entrant's brand to drive consumers directly to its website.  If any of these services are successful in attracting consumers who would otherwise use our services, our business and results of operations would be harmed.

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Competition in U.S. online travel remains intense and online travel companies are creating new promotions and consumer value features in an effort to gain competitive advantages. In particular, the competition to provide "opaque" accommodation reservation services to consumers, an area in which our priceline.com business has been a leader, has become more intense. For example, Expedia makes opaque accommodation room reservations available through its Hotwire brand and on its principal website under the name "Expedia Unpublished Rates" and has, we believe, supported this initiative with steeper discounts through lower margins. We believe these offerings, in particular "Expedia Unpublished Rates," have adversely impacted the market share and year-over-year growth rate for priceline.com's Name Your Own Price^® opaque hotel reservation service, which has been experiencing a decline in room night reservations since 2011. These and other competitors could also launch opaque rental car services, which could negatively impact priceline.com's opaque Name Your Own Price^® rental car reservation service. If Expedia or others are successful in growing their opaque reservation services, we may have less consumer demand for our opaque reservation services over time, and we would face more competition for access to the limited supply of discounted reservation rates. As a result of this increased competition, our share of the discount accommodation reservation market in the United States could further decrease, which could harm our business and results of operations. In addition, high hotel occupancy levels in the United States have had an adverse impact on our access to hotel rooms for our opaque hotel reservation services. Further, growth in discounted closed user group retail prices for hotel rooms lessens the price difference for members of the closed user group between a retail hotel reservation and an opaque hotel reservation, which we believe has led to fewer consumers using our opaque hotel reservation services.

After entering into an exclusive, long-term strategic marketing agreement in August 2013, Expedia acquired Travelocity in January 2015. And, in September 2015, Expedia acquired Orbitz. To the extent these acquisitions enhance Expedia's ability to compete with us, in particular in the United States, which is Expedia's, Travelocity's and Orbitz's largest market, our market share and results of operations could be adversely affected.

We are exposed to fluctuations in currency exchange rates.

We conduct a substantial majority of our business outside the United States but we report our results in U.S. Dollars. As a result, we face exposure to adverse movements in currency exchange rates as the financial results of our international businesses are translated from local currency (principally Euros and British Pounds Sterling) into U.S. Dollars. The U.S. Dollar significantly strengthened against the Euro during 2014 and the first nine months of 2015, moving from an exchange rate of 1.38 U.S. Dollars per Euro as of January 1, 2014 to 1.12 U.S. Dollars per Euro as of September 30, 2015. The U.S. Dollar also strengthened significantly during this time frame as compared to many other currencies. As a result, our foreign currency denominated net assets, gross bookings, gross profit, operating expenses and net income have been negatively impacted as expressed in U.S. Dollars. For example, gross profit from our international businesses grew year-over-year on a constant currency basis by approximately 29% for the three months ended September 30, 2015, but, as a result of the impact of changes in currency exchange rates, grew by approximately 11% as reported in U.S. Dollars.

Certain European Union countries with high levels of sovereign debt have had difficulty at times refinancing their debt. Concern around devaluation or abandonment of the Euro common currency, or that sovereign default risk may become more widespread, has led to significant volatility in the exchange rate between the Euro, the British Pound Sterling, the U.S. Dollar and other currencies. The European Central Bank, in an effort to stimulate the European economy, recently launched a quantitative easing program to purchase public debt, which in turn has contributed to the weakening of the Euro compared to the U.S. Dollar.

Significant fluctuations in currency exchange rates can affect consumer travel behavior. For example, dramatic depreciation of the Russian Ruble in 2014 resulted in it becoming more expensive for Russians to travel to Europe and most other non-Ruble destinations. Consumers traveling from a country whose currency has weakened against other currencies may book lower ADR accommodations, choose to shorten or cancel their international travel plans or choose to travel domestically rather than internationally, any of which could adversely affect our gross bookings, revenues and results of operations, in particular when expressed in U.S. Dollars.

Additionally, foreign exchange rate fluctuations on transactions denominated in currencies other than the functional currency result in gains and losses that are reflected in our financial results.

Volatility in foreign exchange rates and its impact on consumer behavior, which may differ across regions, makes it more difficult to forecast industry and consumer trends and the timing and degree of their impact on our markets and business, which in turn could adversely affect our ability to effectively manage our business and adversely affect our results of operations.

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We rely on online advertising channels to enhance our brand awareness and to generate a significant amount of traffic to our websites.

We believe that maintaining and expanding the Booking.com, priceline.com, KAYAK, agoda.com, rentalcars.com and OpenTable brands, along with our other owned brands, are important aspects of our efforts to attract and retain customers. Effective online advertising has been an important factor in our growth, and we believe it will continue to be important to our future success. As our competitors spend increasingly more on advertising, we are required to spend more in order to maintain our brand recognition and, in the case of online advertising, to maintain and grow traffic to our websites. In addition, we have invested considerable money and resources in the establishment and maintenance of our brands, and we will continue to invest resources in advertising, marketing and other brand building efforts to preserve and enhance consumer awareness of our brands. We may not be able to successfully maintain or enhance consumer awareness and acceptance of our brands, and, even if we are successful in our branding efforts, such efforts may not be cost-effective. If we are unable to maintain or enhance consumer awareness and acceptance of our brands in a cost-effective manner, our business, market share and results of operations would be materially adversely affected.

Our online advertising efficiency, expressed as online advertising as a percentage of gross profit, is impacted by a number of factors that are subject to variability and that are, in some cases, outside of our control, including ADRs, costs per click, cancellation rates, foreign exchange rates, our ability to convert paid traffic to booking customers and the extent to which consumers come directly to our websites or mobile apps for bookings. For example, competition for desired rankings in search results and/or a decline in ad clicks by consumers, could increase our costs-per-click and reduce our online advertising efficiency. We use third-party websites, including online search engines (primarily Google), meta-search and travel research services, and affiliate marketing as primary means of generating traffic to our websites. Our online advertising expense has increased significantly in recent years, a trend we expect to continue. In addition, from 2011 to 2013 our online advertising grew faster than our gross profit due to (1) year-over-year declines in online advertising returns on investment and (2) brand mix within The Priceline Group as our international brands grew faster than our U.S. brands and spent a higher percentage of gross profit on online advertising. In 2014, these long-term trends continued, but were more than offset by the inclusion of KAYAK and OpenTable because they spend a lower percentage of gross profit on online advertising than our other brands. Also, our consolidated results exclude intercompany advertising by our brands on KAYAK. In the first three quarters of 2015, online advertising efficiency declined compared to the prior year, mainly due to lower ROIs. Any reduction in our online advertising efficiency could have an adverse effect on our business and results of operations, whether through reduced gross profit or gross profit growth or through advertising expenses increasing faster than gross profit and thereby reducing margins and earnings growth.

We believe that a number of factors could cause consumers to increase their shopping behavior before making a travel purchase. Increased shopping behavior reduces our online advertising efficiency and effectiveness because traffic becomes less likely to result in a purchase on our website, and such traffic is more likely to be obtained through paid online advertising channels than through free direct channels. Further, consumers may favor travel services offered by search companies or meta-search sites over OTCs, which could reduce traffic to our travel reservation websites, increase consumer awareness of our competitors' brands and websites, increase our advertising and other customer acquisition costs and adversely affect our business, margins and results of operations. To the extent any such increased shopping behavior leads to growth in our KAYAK meta-search business, such growth may not result in sufficient increases in revenues from our KAYAK meta-search business to offset any related decrease in gross profit or increase in advertising and other customer acquisition costs experienced by our online travel service reservation brands.

Our business could be negatively affected by changes in Internet search engine algorithms and dynamics or traffic-generating arrangements.

We use Google to generate a significant portion of the traffic to our websites, and, to a lesser extent, we use other search engines and meta-search websites to generate traffic to our websites, principally through pay-per-click advertising campaigns. The pricing and operating dynamics on these search engines can experience rapid change commercially, technically and competitively. For example, Google frequently updates and changes the logic which determines the placement and display of results of a consumer's search, such that the placement of links to our websites can be negatively affected and our costs to improve or maintain our placement in search results can increase. If Google changes how it presents travel search results or the manner in which it conducts the auction for placement among search results, in either case in a manner that is competitively disadvantageous to us, whether to support its own travel-related services (such as "Book on Google") or otherwise, our ability to efficiently generate traffic to our websites could be harmed, which in turn would have an adverse effect on our business, market share and results of operations.

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In addition, we purchase website traffic from a number of other sources, including some operated by our competitors, in the form of pay-per-click arrangements that can be terminated with little or no notice. If one or more of such arrangements is terminated, our business, market share and results of operations could be adversely affected. Lastly, we rely on various third-party distribution channels (i.e., marketing affiliates) to distribute accommodation, rental car and airline ticket reservations. Should one or more of such third parties cease distribution of reservations made through us, or suffer deterioration in its search engine ranking, due to changes in search engine algorithms or otherwise, our business and results of operations could be negatively affected.

Consumer adoption and use of mobile devices creates new challenges and may enable device companies such as Apple to compete directly with us.

Widespread adoption of mobile devices, such as the iPhone, Android-enabled smart phones and tablets such as the iPad, coupled with the improved web browsing functionality and development of thousands of useful "apps" available on these devices, is driving substantial online traffic and commerce to mobile platforms. We have experienced a significant shift of business to mobile platforms and our advertising partners are also seeing a rapid shift of traffic to mobile platforms. Our major competitors and certain new market entrants are offering mobile applications for travel products and other functionality, including proprietary last-minute discounts for accommodation reservations. Advertising and distribution opportunities may be more limited on mobile devices given their smaller screen sizes. The gross profit earned on a mobile transaction may be less than a typical desktop transaction due to different consumer purchasing patterns. For example, accommodation reservations made on a mobile device typically are for shorter lengths of stay and are not made as far in advance. Further, given the device sizes and technical limitations of tablets and smartphones, mobile consumers may not be willing to download multiple apps from multiple companies providing a similar service and instead prefer to use one or a limited number of apps for their mobile travel and restaurant research and reservation activity. As a result, the consumer experience with mobile apps as well as brand recognition and loyalty are likely to become increasingly important. Our mobile offerings have received generally strong reviews and are driving a material and increasing share of our business. We believe that mobile bookings present an opportunity for growth and are necessary to maintain and grow our business as consumers increasingly turn to mobile devices instead of a personal computer. As a result, it is increasingly important for us to develop and maintain effective mobile apps and websites optimized for mobile devices to provide customers with an appealing, easy-to-use mobile experience. If we are unable to continue to rapidly innovate and create new, user-friendly and differentiated mobile offerings and efficiently and effectively advertise and distribute on these platforms, or if our mobile offerings are not used by consumers, we could lose market share to existing competitors or new entrants and our future growth and results of operations could be adversely affected.

Apple, one of the most innovative and successful companies in the world and producer of, among other things, the iPhone and iPad, obtained a patent for "iTravel," a mobile app that would allow a traveler to check in for a travel reservation. In addition, Apple's iPhone operating system includes "Wallet" (formerly known as "Passbook"), a virtual wallet app that holds tickets, boarding passes, coupons and gift cards, and, along with iTravel, may be indicative of Apple's intent to enter the travel reservations business in some capacity. Apple has substantial market share in the smart phone category and controls integration of offerings, including travel services, into its mobile operating system. Apple also has more experience producing and developing mobile apps and has access to greater resources than we have. Apple may use or expand iTravel, Wallet, Siri (Apple's voice recognition "concierge" service), Apple Pay (Apple's mobile payment system) or another mobile app or functionality as a means of entering the travel reservations marketplace. Similarly, Google's Android operating system is the leading smart phone operating system in the world. As a result, Google could leverage its Android operating system to give its travel services a competitive advantage, either technically or with prominence on its Google Play app store or within its mobile search results. To the extent Apple or Google use their mobile operating systems or app distribution channels to favor their own travel service offerings, our business could be harmed.

Our processing, storage, use and disclosure of personal data exposes us to risks of internal or external security breaches and could give rise to liabilities.

The security of data when engaging in electronic commerce is essential to maintaining consumer and travel service provider confidence in our services. Any security breach whether instigated internally or externally on our system or other Internet-based systems could significantly harm our reputation and therefore our business, brand, market share and results of operations. We currently require consumers who use certain of our services to guarantee their offers with their credit card, either online or, in some instances, through our toll-free telephone service. We require user names and passwords in order to access our information technology systems. We also use encryption and authentication technologies to secure the transmission and storage of data and prevent access to our data or accounts. It is possible that computer circumvention capabilities, new discoveries or advances or other developments, including our own acts or omissions, could result in a compromise or breach of consumer data. For example, third parties may attempt to fraudulently induce employees or customers to disclose user names,

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passwords or other sensitive information ("phishing"), which may in turn be used to access our information technology systems or to defraud our customers. We have experienced targeted and organized phishing attacks and may experience more in the future. Our efforts to protect information from unauthorized access may be unsuccessful or may result in the rejection of legitimate attempts to book reservations through our services, any of which could result in lost business and materially adversely affect our business, reputation and results of operations.

Our existing security measures may not be successful in preventing security breaches. A party (whether internal, external, an affiliate or unrelated third party) that is able to circumvent our security systems could steal consumer information or transaction data or other proprietary information. In the last few years, several major companies, including Sony, HomeDepot, JPMorgan, Target, Zappos, Apple, AOL, LinkedIn, Google, and Yahoo! experienced high-profile security breaches that exposed their customers' and employees' personal information. We expend significant resources to protect against security breaches, and we may need to increase our security-related expenditures to maintain or increase our systems' security or to address problems caused and liabilities incurred by breaches. These issues are likely to become more difficult to manage as we expand the number of places where we operate and as the tools and techniques used in such attacks become more advanced. As recently experienced by Sony, security breaches could result in severe damage to our information technology infrastructure, including damage that could impair our ability to offer our services or the ability of consumers to make reservations or conduct searches through our services, as well as loss of customer, financial or other data that could materially and adversely affect our ability to conduct our business, satisfy our commercial obligations or meet our public reporting requirements in a timely fashion or at all. Security breaches could also result in negative publicity, damage our reputation, expose us to risk of loss or litigation and possible liability, subject us to regulatory penalties and sanctions, or cause consumers to lose confidence in our security and choose to use the services of our competitors, any of which would have a negative effect on the value of our brand, our market share and our results of operations. Our insurance policies carry low coverage limits, and would likely not be adequate to reimburse us for losses caused by security breaches.

We also face risks associated with security breaches affecting third parties conducting business over the Internet. Consumers generally are concerned with security and privacy on the Internet, and any publicized security problems could inhibit the growth of the Internet and negatively affect consumers' willingness to provide private information or effect commercial transactions on the Internet generally, including through our services. Some of our business is conducted with third-party marketing affiliates, which may generate travel reservations through our infrastructure or through other systems. Additionally, consumers using our services could be affected by security breaches at third parties such as travel service providers, payroll providers, health plan providers, payment processors or global distribution systems ("GDSs") upon which we rely. A security breach at any such third-party marketing affiliate, travel service provider, GDS or other third party on which we rely could be perceived by consumers as a security breach of our systems and in any event could result in negative publicity, damage our reputation, expose us to risk of loss or litigation and possible liability and subject us to regulatory penalties and sanctions. In addition, such third parties may not comply with applicable disclosure requirements, which could expose us to liability.

In our processing of travel transactions, we receive and store a large volume of personally identifiable data. This data is increasingly subject to legislation and regulations in numerous jurisdictions around the world, such as the European Union's Data Protection Directive and variations and implementations of that directive in the member states of the European Union. In addition, the European Union is actively considering a new General Data Protection Regulation designed to unify data protection within the European Union under a single law, which may result in significantly greater compliance burdens for companies with users and operations in the European Union.  Under the draft General Data Protection Regulation fines of up to 100,000,000 Euros or up to 5% of the annual global turnover of the infringer could be imposed. This government action is typically intended to protect the privacy of personal data that is collected, processed and transmitted in or from the governing jurisdiction. In many cases, these laws apply not only to third-party transactions, but also to transfers of information between us and our subsidiaries, including employee information. For several years, we participated in the U.S-.E.U. Safe Harbor Arrangement (the "Safe Harbor") to address the European Union's data transfer regulations that would otherwise restrict the transfer of certain data from the European Union to the United States. In October 2015, the European Court of Justice invalidated the Safe Harbor, and, as a result, we may need to pursue consent and/or other solutions with respect to certain data transfers from the European Union to the United States. Such consents and/or solutions could be time consuming, costly or complicated to obtain or implement, or we may not be successful in such efforts, any of which could adversely affect our operations and financial results. These laws and their interpretations continue to develop and may be inconsistent from jurisdiction to jurisdiction. Non-compliance with these laws could result in penalties or significant legal liability. We could be adversely affected if legislation or regulations are expanded to require changes in our business practices or if governing jurisdictions interpret or implement their legislation or regulations in ways that negatively affect our business, results of operations or financial condition.

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We are also subject to payment card association rules and obligations under our contracts with payment card processors. Under these rules and obligations, if information is compromised, we could be liable to payment card issuers for associated expenses and penalties. In addition, if we fail to follow payment card industry security standards, even if no customer information is compromised, we could incur significant fines or experience a significant increase in payment card transaction costs.

System capacity constraints, system failures or "denial-of-service" or other attacks could harm our business.

We have experienced rapid growth in consumer traffic to our websites and through our mobile apps, the number of accommodations on our extranets and the geographic breadth of our operations. If our systems cannot be expanded to cope with increased demand or fail to perform, we could experience unanticipated disruptions in service, slower response times, decreased customer service and customer satisfaction and delays in the introduction of new services, any of which could impair our reputation, damage our brands and materially and adversely affect our results of operations. Further, as an online business, we are dependent on the Internet and maintaining connectivity between ourselves and consumers, sources of Internet traffic, such as Google, and our travel service providers. As consumers increasingly turn to mobile devices, we also become dependent on consumers' access to the Internet through mobile carriers and their systems. Disruptions in Internet access, whether generally, in a specific market or otherwise, especially if widespread or prolonged, could materially adversely affect our business and results of operations. While we do maintain redundant systems and hosting services, it is possible that we could experience an interruption in our business, and we do not carry business interruption insurance sufficient to compensate us for all losses that may occur.

Our computer hardware for operating our services is currently located at hosting facilities around the world. These systems and operations are vulnerable to damage or interruption from human error, floods, fires, power loss, telecommunication failures and similar events. They are also subject to break-ins, sabotage, intentional acts of vandalism, terrorism and similar misconduct. Despite any precautions we may take, the occurrence of any disruption of service due to any such misconduct, natural disaster or other unanticipated problems at such facilities, or the failure by such facilities to provide our required data communications capacity could result in lengthy interruptions or delays in our services. Any system failure that causes an interruption or delay in service could impair our reputation, damage our brands or result in consumers choosing to use a competitive service, any of which could have a material adverse effect on our business and results of operations.

Our existing security measures may not be successful in preventing attacks on our systems, and any such attack could cause significant interruptions in our operations. For instance, from time to time, we have experienced "denial-of-service" type attacks on our systems that have made portions of our websites slow or unavailable for periods of time. There are numerous other potential forms of attack, such as "phishing" (where a third party attempts to infiltrate our systems or acquire information by posing as a legitimate inquiry or electronic communication), SQL injection (where a third party attempts to obtain information or otherwise insert malicious code into our software through data entry fields in our websites) and attempting to use our websites as a platform to launch a "denial-of-service" attack on another party, each of which could cause significant interruptions in our operations and potentially adversely affect our brand, operations and results of operations or involve us in legal or regulatory proceedings. We expend significant resources in an attempt to prepare for and mitigate the effects of any such attacks. Reductions in website availability and response time could cause loss of substantial business volumes during the occurrence of any such attack on our systems, and measures we may take to divert suspect traffic in the event of such an attack could result in the diversion of bona fide customers. These issues are likely to become more difficult to manage as we expand the number of places where we operate and as the tools and techniques used in such attacks become more advanced. Successful attacks could result in negative publicity, damage our reputation and prevent consumers from booking travel services, researching travel services or making restaurant reservations through us during the attack, any of which could cause consumers to use the services of our competitors, which would have a negative effect on the value of our brands, our market share and our results of operations.

We rely on certain third-party computer systems and third-party service providers, including GDSs and computerized central reservation systems of the accommodation, rental car and airline industries in connection with providing some of our services. Any interruption in these third-party services and systems or deterioration in their performance could prevent us from booking related accommodation, rental car and airline reservations and have a material adverse effect on our business, brands and results of operations. Our agreements with some third-party service providers are terminable upon short notice and often do not provide recourse for service interruptions. In the event our arrangement with any such third party is terminated, we may not be able to find an alternative source of systems support on a timely basis or on commercially reasonable terms and, as a result, it could have a material adverse effect on our business and results of operations.

We depend upon various third parties to process credit cards for our merchant transactions around the world. In addition, we rely on third parties to provide credit card numbers which we use as a payment mechanism for merchant transactions. If any such third party were wholly or partially compromised, our cash flows could be disrupted or we may not be

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able to generate merchant transactions (and related revenues) until such a time as a replacement process could be put in place with a different vendor.

We do not have a completely formalized or comprehensive disaster recovery plan in every geographic region in which we conduct business. In the event of certain system failures, we may not be able to switch to back-up systems immediately and the time to full recovery could be prolonged. Like many online businesses, we have experienced system failures from time to time. In addition to placing increased burdens on our engineering staff, these outages create a significant amount of consumer questions and complaints that need to be addressed by our customer support personnel. Any unscheduled interruption in our service could result in an immediate loss of revenues that can be substantial, increase customer service cost, harm our reputation and cause some consumers to switch to our competitors. If we experience frequent or persistent system failures, our reputation and brand could be permanently and significantly harmed. We have taken and continue to take steps to increase the reliability and redundancy of our systems. These steps are expensive, may reduce our margins and may not be successful in reducing the frequency or duration of unscheduled downtime.

We use both internally developed systems and third-party systems to operate our services, including transaction processing, order management and financial systems. If the number of consumers using our services increases substantially, or if critical third-party systems stop operating as designed, we will need to significantly expand and upgrade our technology, transaction processing systems, financial and accounting systems and other infrastructure. We may not be able to upgrade our systems and infrastructure to accommodate such conditions in a timely manner, and, depending on the third-party systems affected, our transactional, financial and accounting systems could be impacted for a meaningful amount of time before upgrade, expansion or repair.

We may have exposure to additional tax liabilities.

As an international business providing reservation and advertising services around the world, we are subject to income taxes and non-income based taxes in the United States and various international jurisdictions. Due to economic and political conditions, tax rates and tax regimes in various jurisdictions may be subject to significant change. Our future effective tax rates could be affected by changes in the mix of earnings in countries with differing statutory tax rates, changes in the valuation of deferred tax assets or changes in tax laws or their interpretation. If our effective tax rates were to increase, our cash flows, financial condition and results of operations would be adversely affected.

Although we believe that our tax filing positions are reasonable and comply with applicable law, the final determination of tax audits or tax disputes may be different from what is reflected in our historical income tax provisions and accruals. To date, we have been audited in several taxing jurisdictions with no significant impact on our financial condition, results of operations or cash flows. If future audits find that additional taxes are due, we may be subject to incremental tax liabilities, possibly including interest and penalties, which could have a material adverse effect on our cash flows, financial condition and results of operations.

For example, French tax authorities have been conducting an audit of the years 2006 through 2012 to determine whether we are in compliance with our tax obligations in France, and we currently expect to receive a formal assessment in the fourth quarter of 2015.  While we believe that we have been, and continue to be, in compliance with French tax law, as a result of the audit we expect the French tax authorities to claim that Booking.com has a permanent establishment in France and seek to recover unpaid income taxes and value-added taxes ("VAT") of approximately 350 million Euros, the majority of which would represent penalties and interest.  We intend to contest any such assessment. If we are unable to resolve the matter with the French authorities, we would expect to challenge the assessment in the French courts. In order to contest the assessment in court, we would be required to pay, upfront, the full amount of any such assessment, though any such payment would not constitute an admission by us that we owe the taxes. French authorities may decide to also audit subsequent tax years, which could result in additional assessments.

In general, governments in the United States and Europe are increasingly focused on ways to increase tax revenues, which has contributed to an increase in audit activity and harsher stances taken by tax authorities.  Any such additional taxes or other assessments may be in excess of our current tax provisions or may require us to modify our business practices in order to reduce our exposure to additional taxes going forward, any of which could have a material adverse effect on our business, results of operations and financial condition.

We will be subject to increased income taxes in the event that our cash balances held outside the United States are remitted to the United States. As of September 30, 2015, we held approximately $8.7 billion of cash, cash equivalents, short-term investments and long-term investments outside of the United States. We currently intend to use our cash held outside the United States to reinvest in our international operations. If our cash balances outside the United States continue to grow and our ability to reinvest those balances outside the United States diminishes, under U.S. GAAP we will be obligated to record

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additional income tax expense in the United States with respect to our unremitted international earnings. We would not make additional income tax payments unless we were to actually repatriate our international cash to the United States. If we were to repatriate our international cash to the United States, we would pay only U.S. federal alternative minimum tax and certain U.S. state income taxes in connection with such repatriation as long as we have net operating loss carryforwards available to offset our U.S. taxable income. Such use of our net operating loss carryforwards would result in us being subject to a cash income tax liability on the earnings of our U.S. businesses sooner than would otherwise have been the case.

Various legislative proposals that would reform U.S. corporate income tax laws have been proposed by President Obama's administration as well as members of the U.S. Congress, including proposals that would significantly impact how U.S. multinational corporations are taxed on foreign earnings.  Such proposals include changes that would reduce U.S. tax deferral on certain foreign digital goods and services transactions, impose a minimum U.S. tax on foreign earnings, impose a one-time 14% tax on previously untaxed non-U.S. earnings, limit U.S. deductions for interest expense related to un-repatriated international-source income, limit interest and royalty deductions in connection with certain related party transactions and put in place certain tax disincentives for offshoring jobs or business segments.  We cannot determine whether some or all of these or other proposals will be enacted into law or what, if any, changes may be made to such proposals prior to being enacted into law.  If U.S. tax laws change in a manner that increases our tax obligations, our financial position and results of operations could be adversely impacted.

Additionally, in October 2015 the Organisation for Economic Co-operation and Development ("OECD") issued "final reports" in connection with its "base erosion and profit shifting" project. The OECD, with the support of the G20, initiated this project in 2013 in response to concerns that international tax standards have not kept pace with changes in global business practices and that changes are needed to international tax laws to address situations where multinationals may pay little or no tax in certain jurisdictions by shifting profits away from jurisdictions where the activities creating those profits may take place. The final reports have been endorsed by the G20 finance ministers and are expected to be presented to G20 country leaders for adoption in November 2015. The final reports address the 15 actions the OECD determined were needed to address base erosion and profit shifting, including: (a) enhancing transparency through the sharing of tax information between countries; (b) prescribing standardized country-by-country reporting and other documentation requirements aimed at identifying where profits, tax and economic activities occur; (c) preventing harmful tax practices including the use of preferential tax regimes; (d) modernizing the OECD's transfer pricing rules related to intangibles; (e) changing the definition of permanent establishment to prevent artificial avoidance of tax nexus; and (f) limiting tax base erosion through interest deductions and other financial payments. The measures also contemplate the development of a multilateral instrument to incorporate and facilitate changes to tax treaties. We expect many countries to change their tax laws in response to this project, and several countries have already changed or proposed changes to their tax laws in anticipation of the final reports. Any changes to international tax laws, including new definitions of permanent establishment or changes affecting the benefits of preferential tax regimes such as the Dutch "Innovation Box Tax" (discussed below), could impact the tax treatment of our foreign earnings and adversely impact our effective tax rate. Further, changes to tax laws and additional reporting requirements could increase the complexity, burden and cost of compliance. Due to the large and expanding scale of our international business activities, any changes in U.S. or international taxation of our activities may increase our worldwide effective tax rate, increase the complexity and costs associated with tax compliance (especially if changes are implemented or interpreted inconsistently across tax jurisdictions) and adversely affect our financial position and results of operations.

We are also subject to non-income based taxes, such as value-added, payroll, sales, use, net worth, property and goods and services taxes, in the United States and various international jurisdictions, as well as the potential for travel transaction taxes in the United States as discussed below and in Note 12 to our Unaudited Consolidated Financial Statements. For example, in July 2012 and December 2013, the Dutch Government enacted certain amendments to Dutch tax law including one-time levies on an employer applied to employee earnings, equal to 16% of an employee's earnings in excess of 150,000 Euros. These irrevocable levies resulted in additional payroll taxes of approximately $12 million (approximately $9 million after tax) in the fourth quarter of 2013 and approximately $14 million (approximately $10 million after tax) principally recorded in the third quarter of 2012. From time to time, we are under audit by tax authorities with respect to these non-income based taxes and may have exposure to additional non-income based tax liabilities.

We may not be able to maintain our "Innovation Box Tax" benefit.

The Netherlands corporate income tax law provides that income generated from qualifying innovative activities is taxed at the rate of 5% ("Innovation Box Tax") rather than the Dutch statutory rate of 25%. A portion of Booking.com's earnings currently qualifies for Innovation Box Tax treatment.

In order to be eligible for Innovation Box Tax treatment, Booking.com must, among other things, apply for and obtain a research and development ("R&D") certificate from a Dutch governmental agency every six months confirming that the activities that Booking.com intends to be engaged in over the subsequent six month period are "innovative." The R&D

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certificate is current but should Booking.com fail to secure such a certificate in any future period - for example, because the governmental agency does not view Booking.com's new or anticipated activities as innovative - or should this agency determine that the activities contemplated to be performed in a prior period were not performed as contemplated or did not comply with the agency's requirements, Booking.com may lose its certificate and, as a result, the Innovation Box Tax benefit may be reduced or eliminated. Booking.com intends to apply for continued Innovation Box Tax treatment for future periods. However, Booking.com's application may not be accepted, or, if accepted, the amount of qualifying earnings may be reduced.

In addition, tax laws may change resulting in a reduction or elimination of the tax benefit. As discussed above, the OECD's action plan involves, in part, evaluation of tax regimes such as the Innovation Box Tax. The European Union Council of Economics and Finance Ministers ("ECOFIN") has endorsed changes to limit member states' existing innovation and patent box tax regimes providing benefits related to profits derived from intangible assets such as intellectual property. The OECD's October 2015 final reports recommend that intellectual property qualifying for such tax regimes generally be limited to patents and other intellectual property assets that are functionally equivalent to patents (such as copyrighted software) if those other assets are both legally protected and subject to similar approval and registration processes as apply to patents. We expect the European Union to endorse the OECD's approach, which would require the new approach to be fully implemented in member states no later than July 2021. The Netherlands has already announced its intention to propose related legislative changes to the Innovation Box Tax regime by September 2016 to be effective January 1, 2017, though we expect such legislative changes will include transition rules. To the extent Booking.com's intellectual property developed by its innovative activities do not meet the requirements under any new legislation, Booking.com would eventually lose the benefit of the Innovation Box Tax.

While we expect Booking.com to continue to qualify for Innovation Box Tax treatment with respect to a portion of its earnings for the foreseeable future, the loss of the Innovation Box Tax benefit (or any material portion thereof), whether due to a change in tax law or a determination by the Dutch government that Booking.com's activities are not "innovative" or for any other reason, would substantially increase our effective tax rate and adversely impact our results of operations.

Our financial results will likely be materially impacted by payment of income taxes in the future.

Until our U.S. net operating loss carryforwards are utilized or expire, we do not expect to make tax payments on most of our U.S. income, except for U.S. federal alternative minimum tax and state income taxes. However, we expect to pay international taxes on our international income other than in countries where we have operating loss carryforwards. We expect that our international business will continue to generate most of our revenues and profits and will continue to grow pretax income at a higher rate than our U.S. business and, therefore, we expect that our tax payments will continue to increase. Any increase in our effective tax rate would have an adverse effect on our results of operations.

Adverse application of U.S. state and local tax laws could have an adverse effect on our business and results of operations.

A number of jurisdictions in the United States have initiated lawsuits against online travel companies, including us, related to, among other things, the payment of travel transaction taxes (e.g., hotel occupancy taxes, excise taxes, sales taxes, etc.). In addition, a number of U.S. states, counties and municipalities have initiated audit proceedings, issued proposed tax assessments or started inquiries relating to the payment of travel transaction taxes. Additional state and local jurisdictions may assert that we are subject to, among other things, travel transaction taxes and could seek to collect such taxes, either retroactively or prospectively, or both.

In connection with some travel transaction tax audits and assessments, we may be required to pay any assessed taxes, which amounts may be substantial, prior to being allowed to contest the assessments and the applicability of the laws in judicial proceedings. This requirement is commonly referred to as "pay to play" or "pay first." Payment of these amounts, if any, is not an admission that we believe that we are subject to such taxes and, even if we make such payments, we intend to continue to assert our position that we should not be subject to such taxes.

Litigation is subject to uncertainty and there could be adverse developments in these pending or future cases and proceedings. Adverse tax decisions could have a material adverse effect on our business, margins and results of operations. An unfavorable outcome or settlement of pending litigation may encourage the commencement of additional litigation, audit proceedings or other regulatory inquiries. In addition, an unfavorable outcome or settlement of these actions or proceedings could result in substantial liabilities for past and/or future bookings, including, among other things, interest, penalties, punitive damages and/or attorneys' fees and costs. There have been, and will continue to be, substantial ongoing costs, which may include "pay first" payments, associated with defending our position in pending and any future cases or proceedings. An adverse outcome in one or more of these unresolved proceedings could have a material adverse effect on our business and results of operations and could be material to our results of operations or cash flows in any given fiscal period.

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To the extent that any tax authority succeeds in asserting that we have a tax collection responsibility, or we determine that we have such a responsibility, with respect to future transactions we may collect any such additional tax obligation from our customers, which would have the effect of increasing the cost of travel reservations to our customers and, consequently, could make our travel reservation service less competitive (i.e., versus the websites of other online travel companies or travel service providers) and reduce our travel reservation transactions; alternatively, we could choose to reduce our profit on affected travel transactions.  Either action could have a material adverse effect on our business and results of operations.

In many of the judicial and other proceedings initiated to date, the taxing jurisdictions seek not only historical taxes that are claimed to be owed on our gross profit, but also, among other things, interest, penalties, punitive damages and/or attorneys' fees and costs.  Therefore, any liability associated with travel transaction tax matters is not constrained to our liability for tax owed, but may also include, among other things, penalties, interest and attorneys' fees.  To date, the majority of the taxing jurisdictions in which we facilitate travel reservations have not asserted that taxes are due and payable on our travel services.  With respect to taxing jurisdictions that have not initiated proceedings to date, it is possible that they will do so in the future or that they will seek to amend their tax statutes and seek to collect taxes from us only on a prospective basis.

We face increased risks as the level of our debt increases.

We have a substantial amount of outstanding indebtedness and we may incur substantial additional indebtedness in the future, including through public or private offerings of debt securities. Our outstanding indebtedness and any additional indebtedness we incur may have significant consequences, which could include:

• requiring the dedication of a portion of our cash flow from operations to service our indebtedness, thereby reducing the amount of cash flow available for other purposes, including capital expenditures, share repurchases and acquisitions;

• increased vulnerability to downturns in our business, to competitive pressures and to adverse changes in general economic and industry conditions;

• decreased ability to obtain additional financing for working capital, capital expenditures, acquisitions, share repurchases or other general corporate purposes; and

• decreased flexibility when planning for or reacting to changes in our business and industry.

Our ability to make payments of principal of and interest on our indebtedness depends upon our future performance, which will be subject to general economic conditions, industry cycles and financial, business and other factors affecting our consolidated results of operations and financial condition, many of which are beyond our control. Further, we may not have access to equity or debt markets or other sources of financing, or such financing may not be available to us on commercially reasonable terms, to repay or refinance our debt as it comes due or, in the case of our convertible notes, upon conversion. If we are unable to generate sufficient cash flow from our U.S. operations in the future to service our debt, we may be required to, among other things, repatriate funds to the United States at substantial tax cost.

We are dependent on providers of accommodations, rental cars and airline tickets and on restaurants.

We rely on providers of accommodations, rental cars and airline tickets and on restaurants to make their services available to consumers through us. Our arrangements with travel service providers generally do not require them to make available any specific quantity of accommodation reservations, rental cars or airline tickets, or to make accommodation reservations, rental cars or airline tickets available in any geographic area, for any particular route or at any particular price. Similarly, our arrangements with restaurants generally do not require them to provide all of their available tables and reservations to customers through us. During the course of our business, we are in continuous dialog with our major travel service providers about the nature and extent of their participation in our services. A significant reduction on the part of any of our major travel service providers or providers that are particularly popular with consumers in their participation in our services for a sustained period of time or their complete withdrawal could have a material adverse effect on our business, market share and results of operations. To the extent any of those major or popular travel service providers ceased to participate in our services in favor of one of our competitors' systems or decided to require consumers to purchase services directly from them, our business, market share and results of operations could be harmed. Further, as consolidation among travel service providers increases, the potential adverse effect of a decision by any particular significant travel service provider (such as a large hotel chain, airline or rental car company) to withdraw from or reduce its participation in our services also increases. To the extent restaurants limit the availability of reservations through OpenTable, consumers may not continue to use our services and/or our

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revenues could be adversely affected, especially if reservations during highly desirable times on high volume days are not made available through us.

Further, KAYAK, a meta-search service, depends on access to information related to travel service pricing, schedules, availability and other related information from OTCs and travel service providers to attract consumers. To obtain this information, KAYAK maintains relationships with travel service providers and OTCs. Many of KAYAK's agreements with travel service providers and OTCs are short-term agreements that may be terminated on 30 days' notice. To the extent OTCs or travel service providers no longer provide such information to KAYAK, KAYAK's ability to provide comprehensive travel service information to consumers could be diminished and its brand, business and results of operations could be harmed. To the extent consumers do not view KAYAK as a reliable source of comprehensive travel service information, fewer consumers would likely visit its websites, which would also likely have a negative impact on KAYAK's advertising revenue and results of operations. In addition, if travel service providers or OTCs choose not to advertise with KAYAK or choose to reduce or eliminate the fees paid to KAYAK for referrals from query results, KAYAK's results of operations could be adversely affected.

We rely on the performance of highly skilled personnel; and, if we are unable to retain or motivate key personnel or hire, retain and motivate qualified personnel, our business would be harmed.

Our performance is largely dependent on the talents and efforts of highly skilled individuals. Our future success depends on our continuing ability to identify, hire, develop, motivate and retain highly skilled personnel for all areas of our organization. In particular, the contributions of certain key senior management in the United States, Europe and Asia are critical to the overall management of our business. We may not be able to retain the services of any members of our senior management or other key employees, the loss of whom could harm our business.

In addition, competition for well-qualified employees in all aspects of our business, including software engineers, mobile communication talent and other technology professionals, is intense both in the United States and abroad. Our international success in particular has led to increased efforts by our competitors and others to hire our international employees. Our continued ability to compete effectively depends on our ability to attract new employees and to retain and motivate existing employees. If we do not succeed in attracting well-qualified employees or retaining and motivating existing employees, our business would be adversely affected. We do not maintain any key person life insurance policies.

As the size of our business grows, we may become increasingly subject to the scrutiny of anti-trust and competition regulators.

Certain business practices common to the online travel industry have become the subject of investigations by various national competition authorities ("NCAs"), particularly in Europe. Investigations related to Booking.com's contractual parity arrangements with accommodation providers, sometimes also referred to as "most favored nation" or "MFN" provisions, were initiated by NCAs in the France, Germany, Italy, Austria, Sweden, Ireland and Switzerland, and a number of other NCAs are looking at these issues. The investigations primarily relate to whether Booking.com's price parity provisions are anti-competitive because they require accommodation providers to provide Booking.com with room rates that are at least as low as those offered to other online travel companies ("OTCs") or through the accommodation provider's website.

On April 21, 2015, the French, Italian and Swedish NCAs, working in close cooperation with the European Commission, announced that they had accepted "commitments" offered by Booking.com to resolve and close the investigations in France, Italy and Sweden. Under the commitments, Booking.com replaced its existing price parity agreements with accommodation providers with "narrow" price parity agreements. Under a "narrow" price parity agreement, subject to certain exceptions, an accommodation provider is still required to offer the same or better rates on Booking.com as it offers to a consumer directly online, but it is no longer required to offer the same or better rates on Booking.com as it offers to other OTCs. The commitments also allow an accommodation provider to, among other things, offer different terms and conditions (e.g., free WiFi) and availability to consumers that book with on-line travel companies that offer lower rates of commission or other benefits, offer lower rates to consumers that book through off-line channels and continue to discount through, among other things, accommodation loyalty programs, as long as those rates are not published or marketed online. The commitments apply to accommodations in France, Italy and Sweden and were effective on July 1, 2015. The foregoing description is a summary only and is qualified in its entirety by reference to the commitments published by the NCAs on April 21, 2015. On October 6, 2015 the Irish NCA closed its investigation on the basis of identical commitments to those given to the French, Italian and Swedish NCAs.

We are in ongoing discussions with various NCAs in other countries regarding their concerns. On July 1, 2015, Booking.com voluntarily implemented the commitments given to the French, Italian and Swedish NCAs throughout the European Economic Area and Switzerland and is working with certain other European NCAs towards closing their

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investigations or inquiries. A number of additional NCAs in the European Economic Area have now closed their investigations following Booking.com's implementation of the commitments in their jurisdictions. However, we are currently unable to predict the impact the implementation of these commitments throughout the European Economic Area and Switzerland will have on Booking.com's business or on the on-going investigations in other European countries, or on industry practice more generally. In particular, we note that the German NCA has alleged that any parity requirements (narrow or otherwise) are anti-competitive and has required Hotel Reservation Service to remove its rate parity clause from its contracts with hotels (Hotel Reservation Service's initial appeal was denied). We expect the German NCA to impose similar requirements on Booking.com. We are unable to predict how the investigations in the other countries will ultimately be resolved. Possible outcomes include requiring Booking.com to amend or remove its rate parity clause from its contracts with accommodation providers in those jurisdictions and/or the imposition of fines. An Italian hotel association has filed an appeal in respect of the Italian NCA's decision to accept the commitments by Booking.com, and we are unable to predict the outcome of that appeal.

In August 2015, French legislation known as the "Macron Law" became effective. Among other things, the Macron Law makes price parity agreements illegal, including the "narrow" price parity agreements agreed to by the French NCA in April 2015. The law also requires that agreements between OTCs and hotels comply with a French contract form called a "mandatory contract." It is not yet clear what, if any, action can be taken in response to the law or how it may affect our business in France. Similar legislation prohibiting "narrow" price parity agreements has been proposed in Italy and currently is awaiting action by the Italian Senate. It is not yet clear whether the legislation will be enacted or, if it is, how it may affect our business in Italy.

To the extent that regulatory authorities impose fines on us or require changes to our business practices or to those currently common to the industry, our business, competitive position and results of operations could be materially and adversely affected. Negative publicity regarding competition investigations could adversely affect our brands and therefore our market share and results of operations. Further, the Macron Law and any similar legislation enacted by other countries, or a decision by the German NCA to prohibit any price parity requirements, could have a material adverse effect on our business and our results of operations, in particular if consumers use our services to shop for accommodation reservations but make their reservations directly with an accommodation provider.

Prior to the initiation of the investigations described above, Booking.com, along with certain other parties, was the subject of an investigation by competition authorities in the United Kingdom related to alleged agreements or concerted practices between hotels and Booking.com and at least one other OTC that restricted Booking.com's (and the other OTC's) ability to discount hotel room reservations and that this was a form of resale price maintenance. The investigation was initially closed based on commitments by the parties, including Booking.com, that provided that (a) while hotels would continue to be able to set retail prices for hotel room reservations on OTC websites, OTCs would have the flexibility to discount a hotel's retail price up to the OTC's commission, but only to members of closed groups (a concept that is defined in the commitments) who have previously made a reservation through the OTC and (b) rate parity clauses would not apply to rates provided by other OTCs or hotels to members of their closed groups so long as the discounted rate is not made public. The U.K. Competition Appeal Tribunal ("CAT") vacated the resolution of the investigation on appeal and remitted the matter to the U.K. Competition and Markets Authority ("CMA") for reconsideration in September 2014. The CMA did not appeal the CAT's decision, and on September 16, 2015 the CMA closed its investigation on administrative grounds, making no findings as to the legality of the discounting restrictions. Many industry participants have been operating based on the substance of these discounting-related commitments, and we expect that to continue.

In addition, as our business grows, we may increasingly become the target of competition investigations or be limited by anti-trust or competition laws. For example, our size and market share may negatively affect our ability to obtain regulatory approval of proposed acquisitions, our ability to expand into complementary businesses or our latitude in dealing with travel service providers (such as by limiting our ability to provide discounts, rebates or incentives or to exercise contractual rights), any of which could adversely affect our ability to grow and compete.

Regulatory and legal requirements and uncertainties could harm our business.

The services we offer are subject to legal regulations (including laws, ordinances, rules and other requirements and regulations) of national and local governments and regulatory authorities around the world, many of which are evolving and subject to the possibility of new or revised interpretations. Our ability to provide our services is and will continue to be affected by such regulations. For example, laws and proposed legislation relating to data localization in some countries could adversely affect our ability to conduct business in those countries. The implementation of unfavorable regulations or unfavorable interpretations of existing regulations by judicial or regulatory bodies could require us to incur significant compliance costs, cause the development of the affected markets to become impractical and otherwise have a material adverse effect on our business and results of operations.

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Compliance with the laws and regulations of multiple jurisdictions increases our cost of doing business. These laws and regulations, which vary and sometimes conflict, include the U.S. Foreign Corrupt Practices Act, the U.K. Bribery Act and local laws which also prohibit corrupt payments to governmental officials or third parties, data privacy requirements, labor relations laws, tax laws, anti-trust or competition laws, U.S., E.U. or U.N. sanctioned country or sanctioned persons mandates, and consumer protection laws. Violations of these laws and regulations could result in fines and/or criminal sanctions against us, our officers or our employees and/or prohibitions on the conduct of our business. Any such violations could result in prohibitions on our ability to offer our services in one or more countries, could delay or prevent potential acquisitions, and could also materially damage our reputation, our brands, our international expansion efforts, our ability to attract and retain employees, our business and our operating results. In addition, these restrictions may provide a competitive advantage to our competitors unless they are also subject to comparable restrictions. Our success depends, in part, on our ability to anticipate these risks and manage these difficulties. We are also subject to a variety of other regulatory and legal risks and challenges in managing an organization operating in various countries, including those related to:

• regulatory changes or other government actions;

• additional complexity to comply with regulations in multiple jurisdictions, as well as overlapping or inconsistent legal regimes, in particular with respect to tax, labor, consumer protection, digital content, advertising, promotions, privacy and anti-trust laws;

• our ability to repatriate funds held by our international subsidiaries to the United States at favorable tax rates;

• difficulties in transferring funds from or converting currencies in certain countries; and

• reduced protection for intellectual property rights in some countries.

Our business has grown substantially over the last several years and continues to expand into new geographic locations. In addition, we have made efforts and expect to make further efforts to integrate access to travel services across our various brands. These changes add complexity to legal and tax compliance, and our increased size and operating history may increase the likelihood that we will be subject to audits by tax authorities in various jurisdictions.

"Cookie" laws could negatively impact the way we do business.

A "cookie" is a text file that is stored on a user's web browser by a website. Cookies are common tools used by thousands of websites, including ours, to, among other things, store or gather information (e.g., remember log-on details so a user does not have to re-enter them when revisiting a website), market to consumers and enhance the user experience on a website. Cookies are valuable tools for websites like ours to improve the customer experience and increase conversion on their websites.

The European Union's ePrivacy Directive requires member countries to adopt regulations governing the use of "cookies" by websites servicing consumers in the European Union. For example, on June 5, 2012, an amendment to the Dutch Telecommunications Act became effective. The amended act requires websites, including Booking.com, to provide Dutch users with clear and comprehensive information about the storage and use of certain cookies and obtain prior consent from the user before placing certain cookies on a user's web browser. To the extent any such regulations require "opt-in" consent before certain cookies can be placed on a user's web browser, our ability, in particular Booking.com's ability, to serve certain customers in the manner we currently do might be adversely affected and our ability to continue to improve and optimize performance on our websites might be impaired, either of which could negatively affect a consumer's experience using our services. As a result, these regulations could have a material adverse effect on our business, market share and results of operations.

Our stock price is highly volatile.

The market price of our common stock is highly volatile and is likely to continue to be subject to wide fluctuations in response to factors such as the following, some of which are beyond our control:

• operating results that vary from the expectations of securities analysts and investors;

• quarterly variations in our operating results;

• changes in expectations as to our future financial performance, including financial estimates by securities analysts and investors;

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• worldwide economic conditions in general and in Europe in particular;

• fluctuations in currency exchange rates, particularly between the U.S. Dollar and the Euro;

• announcements of technological innovations or new services by us or our competitors;

• changes in our capital structure;

• changes in market valuations of other Internet or online service companies;

• announcements by us or our competitors of price reductions, promotions, significant contracts, acquisitions, strategic partnerships, joint ventures or capital commitments;

• loss of a major travel service provider participant, such as a hotel chain, rental car company or airline, from our services;

• changes in the status of our intellectual property rights;

• lack of success in the expansion of our business models geographically;

• announcements by third parties of significant claims or initiation of litigation proceedings against us or adverse developments in pending proceedings;

• occurrences of a significant security breach;

• additions or departures of key personnel; and

• trading volume fluctuations.

Sales of a substantial number of shares of our common stock, including through the conversion of our convertible notes, could adversely affect the market price of our common stock by introducing a large number of sellers to the market. Given the volatility that exists for our shares, such sales could cause the market price of our common stock to decline significantly. In addition, fluctuations in our stock price and our price-to-earnings multiple may have made our stock attractive to momentum, hedge or day-trading investors who often shift funds into and out of stocks rapidly, exacerbating price fluctuations in either direction, particularly when viewed on a quarterly basis.

The trading prices of Internet company stocks in general, including ours, have experienced extreme price and volume fluctuations. To the extent that the public's perception of the prospects of Internet or e-commerce companies is negative, our stock price could decline, regardless of our results. Other broad market and industry factors may decrease the market price of our common stock, regardless of our operating performance. Market fluctuations, as well as general political and economic conditions, such as a recession or interest rate or currency rate fluctuations, could cause our stock price to decline. Negative market conditions could adversely affect our ability to raise additional capital or the value of our stock for purposes of acquiring other companies or businesses.

We have, in the past, been a defendant in securities class action litigation. Securities class action litigation has often been brought against a company following periods of volatility in the market price of its securities. To the extent our stock price declines or is volatile, we may in the future be the target of additional litigation. This additional litigation could result in substantial costs and divert management's attention and resources, either of which could adversely affect our business, financial condition and results of operations.

We may not be able to keep up with rapid technological changes.

The markets in which we compete are characterized by rapidly changing technology, evolving industry standards, consolidation, frequent new service announcements, introductions and enhancements and changing consumer demands. We may not be able to keep up with these rapid changes. In addition, these market characteristics are heightened by the progress of technology adoption in various markets, including the continuing adoption of the Internet and online commerce in certain geographies and the emergence and growth of the use of smart phones and tablets for mobile e-commerce transactions, including through the increasing use of mobile apps. As a result, our future success will depend on our ability to adapt to

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rapidly changing technologies, to adapt our services to evolving industry standards and to continually innovate and improve the performance, features and reliability of our services in response to competitive service offerings and the evolving demands of the marketplace. In particular, we believe that it will be increasingly important for us to effectively offer our services through mobile applications and mobile optimized websites on smart phones and tablets. Any failure by us to successfully develop and achieve customer adoption of our mobile applications and mobile optimized websites would likely have a material and adverse effect on our growth, market share, business and results of operations. Further, to the extent mobile devices enable users to block advertising content on their devices, our advertising revenue and our ability to market our brands and acquire new customers may be negatively affected. We believe that increasingly ease-of-use, comprehensive functionality and the look and feel of our mobile apps and mobile optimized websites will be competitively critical as consumers obtain more of their travel and restaurant services through mobile devices. As a result, we intend to continue to spend significant resources maintaining, developing and enhancing our websites, including our mobile optimized websites, and our mobile apps and other technology.

In addition, the widespread adoption of new Internet, networking or telecommunications technologies or other technological changes could require us to incur substantial expenditures to modify or adapt our services or infrastructure to those new technologies, which could adversely affect our results of operations or financial condition. For example, KAYAK generates revenues, in part, by allowing consumers to compare search results that appear in additional "pop-under" windows. Changes in browser functionality, such as changes that either block or otherwise limit the use of "pop-under" windows, at times has had a negative impact on our revenues. Any failure to implement or adapt to new technologies in a timely manner or at all could adversely affect our ability to compete, increase our customer acquisition costs or otherwise adversely affect our business, and therefore adversely affect our brand, market share and results of operations.

We face risks related to our intellectual property.

We regard our intellectual property as critical to our success, and we rely on domain name, trademark, copyright and patent law, trade secret protection and confidentiality and/or license agreements with our employees, travel service providers, partners and others to protect our proprietary rights. We have filed various applications for protection of certain aspects of our intellectual property in the United States and other jurisdictions, and we currently hold a number of issued patents in multiple jurisdictions. Further, in the future we may acquire additional patents or patent portfolios, which could require significant cash expenditures. However, we may choose not to patent or otherwise register some of our intellectual property and instead rely on trade secret or other means of protecting our intellectual property. We have licensed in the past, and may license in the future, certain of our proprietary rights, such as trademarks or copyrighted material, to third parties, and these licensees may take actions that diminish the value of our proprietary rights or harm our reputation. In addition, effective intellectual property protection may not be available in every country in which our services are made available online. We may be required to expend significant time and resources to prevent infringement or to enforce our intellectual property rights.

While we believe that our intellectual property rights, including our issued patents and pending patent applications, help to protect our business, there can be no assurance that:

• a third party will not have or obtain one or more patents that can prevent us from practicing features of our business or that will require us to pay for a license to use those features;

• our operations do not or will not infringe valid, enforceable patents of third parties;

• we can successfully defend our patents against challenges by third parties;

• pending patent applications will result in the issuance of patents;

• competitors or potential competitors will not devise new methods of competing with us that are not covered by our patents or patent applications;

• because of variations in the application of our business model to each of our services, our patents will be effective in preventing one or more third parties from utilizing a copycat business model to offer the same service in one or more categories;

• new prior art will not be discovered that may diminish the value of or invalidate an issued patent; or

• legislative or judicial action will not directly or indirectly affect the scope and validity of any of our patent rights, including the ability to obtain and enforce so called "business method patents".

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If we are not successful in protecting our intellectual property, it could have a material adverse effect on our business, brands and results of operations.

From time to time, in the ordinary course of our business, we have been subject to, and are currently subject to, legal proceedings and claims relating to the intellectual property rights of others, and we expect that third parties will continue to assert intellectual property claims, in particular patent claims, against us, particularly as we expand the complexity and scope of our business. For example, in February 2015, IBM sued us and certain of our subsidiaries asserting that we infringe certain IBM patents and claiming damages and injunctive relief. While we believe the suit to be without merit and intend to contest it, litigation is uncertain and we may not be successful. We endeavor to defend our intellectual property rights diligently, but intellectual property litigation is extremely expensive and time consuming, and may divert managerial attention and resources from our business objectives. Successful infringement claims against us could result in significant monetary liability or prevent us from operating our business, or portions of our business. In addition, resolution of claims may require us to obtain licenses to use intellectual property rights belonging to third parties, which may be expensive to procure, or possibly to cease using those rights altogether. Any of these events could have a material adverse effect on our business, results of operations or financial condition.

Our use of "open source" software could adversely affect our ability to protect our proprietary software and subject us to possible litigation.

We use open source software in connection with our software development. From time to time, companies that use open source software have faced claims challenging the use of open source software and/or compliance with open source license terms. We could be subject to suits by parties claiming ownership of what we believe to be open source software, or claiming non-compliance with open source licensing terms. Some open source licenses require users who distribute software containing open source to make available all or part of such software, which in some circumstances could include valuable proprietary code of the user. While we monitor our use of open source software and try to ensure that none is used in a manner that would require us to disclose our proprietary source code or that would otherwise breach the terms of an open source agreement, such use could inadvertently occur, in part because open source license terms are often ambiguous. Any requirement to disclose our proprietary source code or pay damages for breach of contract could be harmful to our business, results of operations or financial condition, and could help our competitors develop services that are similar to or better than ours.

Our business is exposed to risks associated with processing credit card transactions.

Our results have been negatively impacted by purchases made using fraudulent credit cards. Because we act as the merchant of record in many of our transactions, including a majority of our priceline.com, agoda.com and rentalcars.com transactions, we may be held liable for accepting fraudulent credit cards on our websites as well as other payment disputes with our customers. Additionally, we may be held liable for accepting fraudulent credit cards in certain retail transactions when we do not act as merchant of record. Accordingly, we calculate and record an allowance for the resulting credit card chargebacks. If we are unable to combat the use of fraudulent credit cards on our websites, our business, results of operations and financial condition could be materially adversely affected.

In addition, in the event that one of our major travel service providers voluntarily or involuntarily declares bankruptcy, we could experience an increase in credit card chargebacks from customers with travel reservations with such travel service provider. For example, airlines that participate in our services and declare bankruptcy or cease operations may be unable or unwilling to honor tickets sold for their flights. Our policy in such event is to direct customers seeking a refund or exchange to the airline, and not to provide a remedy ourselves. Because we are the merchant-of-record on sales of Name Your Own Price^® and Express Deals^® airline tickets to our customers, however, we could experience a significant increase in demands for refunds or credit card chargebacks from customers, which could materially adversely affect our results of operations and financial condition. For example, in April 2008, Aloha Airlines and ATA Airlines each ceased operations, and we experienced an increase in credit card chargebacks from customers with tickets on those airlines. Agoda.com and rentalcars.com process credit card transactions and operate in numerous currencies. Credit card costs are typically higher for foreign currency transactions and in instances where cancellations occur.

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The success of our acquisition of OpenTable is subject to numerous risks and uncertainties.

On July 24, 2014, we acquired OpenTable, a leading brand for booking online restaurant reservations. We believe that the online restaurant reservation business is complementary to our online travel businesses, and that both OpenTable and our travel businesses will benefit from adding OpenTable to The Priceline Group. As a result of our acquisition of OpenTable, we are subject to risks associated with OpenTable's business, many of which are the same risks that our other businesses face. Other risks include: OpenTable's ability to increase the number of restaurants and diners using its products and services and retain existing restaurants and diners; competition both to provide reservation management services to restaurants and to attract diners to make reservations through OpenTable's websites and apps; OpenTable's ability to expand internationally; OpenTable's ability to effectively and efficiently market to new restaurants and diners; and any risks that cause people to refrain from dining at restaurants, such as economic downturns, severe weather, outbreaks of pandemic or contagious diseases, or threats of terrorist attacks. We have invested since the acquisition and intend to continue to invest in OpenTable to accelerate its global expansion, increase the value offered to its restaurant partners and enhance the end-to-end experience for customers across desktop and mobile devices. As expected, these investments resulted in lower OpenTable post-acquisition EBITDA compared to pre-acquisition levels. However, the time required to execute these investments has exceeded our initial expectations. Despite the delays, we continue to believe that these investments will result in significant future earnings. Future events and changing market conditions may, however, lead us to reevaluate the assumptions we have used to test for goodwill impairment, including key assumptions regarding OpenTable's expected growth rates and operating margins, as well as other key assumptions with respect to matters outside of our control, such as discount rates, currency exchange rates and market EBITDA comparables. If OpenTable’s investments, in particular its investments in its global expansion efforts, are not successful, there is a substantial likelihood that we would recognize a related goodwill impairment, which could have a material adverse affect on our results of operations.

Investment in new business strategies and acquisitions could disrupt our ongoing business and present risks not originally contemplated.

We have invested, and in the future may invest, in new business strategies and acquisitions. Such endeavors may involve significant risks and uncertainties, including distraction of management from current operations, greater than expected liabilities and expenses, inadequate return on capital, and unidentified issues not discovered in our investigations and evaluations of those strategies and acquisitions. We may decide to make minority investments, including through joint ventures, in which we have limited or no management or operational control. The controlling person in such a case may have business interests, strategies or goals that are inconsistent with ours, and decisions of the company or venture in which we invested may result in harm to our reputation or adversely affect the value of our investment. Further, we may issue shares of our common stock in these transactions, which could result in dilution to our stockholders.

The value of our investments could decline, which could adversely affect our financial condition and results of operations.

We maintain an investment portfolio of various holdings, types and maturities. These securities are predominantly classified as available-for-sale and, consequently, are recorded on our Unaudited Consolidated Balance Sheets at fair value with unrealized gains or losses reported as a component of accumulated other comprehensive income, net of tax. Our portfolio includes fixed income securities and equity securities of publicly traded companies, the values of which are subject to market price volatility. If such investments suffer market price declines, we may recognize in earnings the decline in the fair value of our investments below their cost basis when the decline is judged to be other than temporary. We have invested a significant amount in Ctrip convertible notes and ADSs. See Footnote 4 to our Unaudited Consolidated Balance Sheets for more information regarding our investments in Ctrip securities. The value of these securities is subject to the risks associated with Ctrip's business.

We also invest from time to time in private companies and these investments are generally accounted for under the cost method. Such investments are inherently risky in that such companies are typically at an early stage of development, may have no or limited revenues, may not be or ever become profitable, may not be able to secure additional funding or their technologies, services or products may not be successfully developed or introduced to the market. Further, our ability to liquidate any such investments is typically dependent on a liquidity event, such as a public offering or acquisition, as no public market exists for such securities. Valuations of privately-held companies are inherently complex and uncertain due to the lack of a liquid market for the company's securities. If we determine that any of our investments in such companies have experienced a decline in value, we may be required to record an other than temporary impairment.

We could lose the full amount of any of our investments, and any impairment of our investments could have a material adverse affect on our financial condition and results of operations.

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Item 2.  Unregistered Sales of Equity Securities and Use of Proceeds

The following table sets forth information relating to repurchases of our equity securities during the three months ended September 30, 2015.

ISSUER PURCHASES OF EQUITY SECURITIES 

Period	(a) Total Number of Shares (or Units) Purchased		(b) Average Price Paid per Share (or Unit)		(c) Total Number of Shares (or Units) Purchased as Part of Publicly Announced Plans or Programs	(d) Maximum Number (or Approximate Dollar Value) of Shares (or Units) that May Yet Be Purchased Under the Plans or Programs
July 1, 2015 –	436,182	(1)	$	1,146.31	—	$	1,415,739,546	(1)
July 31, 2015	218	(2)	$	1,194.34	N/A	N/A
August 1, 2015 –	393,578	(1)	$	1,230.50	—	$	931,442,958	(1)
August 31, 2015	1,432	(2)	$	1,314.55	N/A	N/A
September 1, 2015 –	149,796	(1)	$	1,219.10	—	$	748,827,264	(1)
September 30, 2015	3,481	(2)	$	1,245.08	N/A	N/A
Total	984,687		$	1,191.64	—	$	748,827,264

 _____________________________

(1) Pursuant to a stock repurchase program announced on February 19, 2015, whereby the Company was authorized to repurchase up to $3,000,000,000 of its common stock.

(2) Pursuant to a general authorization, not publicly announced, whereby the Company is authorized to repurchase shares of its common stock to satisfy employee withholding tax obligations related to stock-based compensation.

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Item 6.  Exhibits

The exhibits listed below are filed as part of this Quarterly Report on Form 10-Q.

Exhibit Number	Description
3.1(a)	Restated Certificate of Incorporation.
3.2(b)	Amended and Restated By-Laws, dated July 23, 2015.
12.1	Statement of Ratio of Earnings to Fixed Charges.
31.1	Certification of Darren R. Huston, the Chief Executive Officer, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2	Certification of Daniel J. Finnegan, the Chief Financial Officer, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1	Certification of Darren R. Huston, the Chief Executive Officer, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	Certification of Daniel J. Finnegan, the Chief Financial Officer, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101	The following materials from the Company's Quarterly Report on Form 10-Q for the three months ended September 30, 2015 are furnished herewith, formatted in XBRL (Extensible Business Reporting Language): (i) Unaudited Consolidated Balance Sheets, (ii) Unaudited Consolidated Statements of Operations, (iii) Unaudited Consolidated Statements of Comprehensive Income, (iv) Unaudited Consolidated Statements of Cash Flows, and (v) Notes to Unaudited Consolidated Financial Statements.

(a) Previously filed as an exhibit to our Current Report on Form 8-K filed on July 18, 2014 and incorporated herein by reference.

(b) Previously filed as an exhibit to our Current Report on Form 8-K filed on July 28, 2015 and incorporated herein by reference.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

			THE PRICELINE GROUP INC.
			(Registrant)
Date:	November 9, 2015	By:	/s/ Daniel J. Finnegan
			Name:  Daniel J. Finnegan Title:    Chief Financial Officer
			(On behalf of the Registrant and as principal financial officer)

71

Exhibit Index

Exhibit Number	Description
3.1(a)	Restated Certificate of Incorporation.
3.2(b)	Amended and Restated By-Laws, dated July 23, 2015.
12.1	Statement of Ratio of Earnings to Fixed Charges.
31.1	Certification of Darren R. Huston, the Chief Executive Officer, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2	Certification of Daniel J. Finnegan, the Chief Financial Officer, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1	Certification of Darren R. Huston, the Chief Executive Officer, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	Certification of Daniel J. Finnegan, the Chief Financial Officer, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101	The following materials from the Company's Quarterly Report on Form 10-Q for the three months ended September 30, 2015 are furnished herewith, formatted in XBRL (Extensible Business Reporting Language): (i) Unaudited Consolidated Balance Sheets, (ii) Unaudited Consolidated Statements of Operations, (iii) Unaudited Consolidated Statements of Comprehensive Income, (iv) Unaudited Consolidated Statements of Cash Flows, and (v) Notes to Unaudited Consolidated Financial Statements.

(a) Previously filed as an exhibit to our Current Report on Form 8-K filed on July 18, 2014 and incorporated herein by reference.

(b) Previously filed as an exhibit to our Current Report on Form 8-K filed on July 28, 2015 and incorporated herein by reference.

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EX-12.1

Exhibit 12.1

The Priceline Group Inc.

Ratio of Earnings to Fixed Charges

(In thousands, except ratio data)

	Three Months Ended September 30,				Nine Months Ended September 30,
	2015		2014		2015		2014
Earnings Computation:
Earnings before income taxes	$	1,456,170	$	1,305,589	$	2,511,790	$	2,437,407
Fixed charges	49,142		29,284		138,228		75,369
Total earnings as adjusted	$	1,505,312	$	1,334,873	$	2,650,018	$	2,512,776
Fixed Charges Computation:
Interest Expense	$	41,436	$	22,953	$	116,462	$	57,804
Assumed interest element included in rent expense	7,706		6,331		21,765		17,565
Total fixed charges	$	49,142	$	29,284	$	138,227	$	75,369
Ratio of earnings to fixed charges	30.6		45.6		19.2		33.3

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Darren R. Huston, certify that:

1. I have reviewed the Quarterly Report on Form 10-Q of The Priceline Group Inc. (the “Registrant”);

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary in order to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Registrant as of, and for, the periods presented in this report;

4. The Registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15(d)-15(f)) for the Registrant and we have:

a. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. evaluated the effectiveness of the Registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. disclosed in this report any change in the Registrant’s internal control over financial reporting that occurred during the Registrant’s most recent fiscal quarter (the Registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the Registrant’s internal control over financial reporting; and

5. The Registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Registrant’s auditors and the audit committee of the Registrant’s board of directors (or persons performing the equivalent functions):

a. all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Registrant’s ability to record, process, summarize and report financial information; and

b. any fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant’s internal control over financial reporting.

Dated:	November 9, 2015		/s/ Darren R. Huston
		Name:	Darren R. Huston
		Title:	President and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Daniel J. Finnegan, certify that:

1. I have reviewed the Quarterly Report on Form 10-Q of The Priceline Group Inc. (the “Registrant”);

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary in order to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Registrant as of, and for, the periods presented in this report;

4. The Registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the Registrant and we have:

a. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. evaluated the effectiveness of the Registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. disclosed in this report any change in the Registrant’s internal control over financial reporting that occurred during the Registrant’s most recent fiscal quarter (the Registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the Registrant’s internal control over financial reporting; and

5. The Registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Registrant’s auditors and the audit committee of the Registrant’s board of directors (or persons performing the equivalent functions):

a. all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Registrant’s ability to record, process, summarize and report financial information; and

b. any fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant’s internal control over financial reporting.

Dated:	November 9, 2015		/s/ Daniel J. Finnegan
		Name:	Daniel J. Finnegan
		Title:	Chief Financial Officer

EX-32.1

Exhibit 32.1

Certification

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

(Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code)

Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter 63 of title 18, United States Code), the undersigned officer of The Priceline Group Inc., a Delaware corporation (the “Company”), hereby certifies that, to his knowledge:

The Quarterly Report on Form 10-Q for the quarter ended September 30, 2015 (the “Report”) of the Company fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 and information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated:	November 9, 2015		/s/ Darren R. Huston
		Name:	Darren R. Huston
		Title:	President and Chief Executive Officer

The foregoing certification is being furnished solely pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter 63 of title 18, United States Code) and is not being filed as part of the Report or as a separate disclosure document.

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

Exhibit 32.2

Certification

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

(Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code)

Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter 63 of title 18, United States Code), the undersigned officer of The Priceline Group Inc., a Delaware corporation (the “Company”), hereby certifies that, to his knowledge:

The Quarterly Report on Form 10-Q for the quarter ended September 30, 2015 (the “Report”) of the Company fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 and information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated:	November 9, 2015		/s/ Daniel J. Finnegan
		Name:	Daniel J. Finnegan
		Title:	Chief Financial Officer

The foregoing certification is being furnished solely pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter 63 of title 18, United States Code) and is not being filed as part of the Report or as a separate disclosure document.

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

XML

FAIR VALUE MEASUREMENTS (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Investments	$ 63,926		$ 63,926		$ 588
Derivatives Not Designated as Hedging Instruments
Foreign exchange gains (losses), net of derivative activity	3,400	$ (4,200)	(2,900)	$ (7,600)
Derivatives Designated as Hedging Instruments
Net cash inflow from foreign currency contracts			453,818	14,354
Net cash outflow on settlement of foreign currency contracts included in investing activities			448,640	94,661
Foreign Currency Contracts [Member]
Derivatives Not Designated as Hedging Instruments
Net cash outflow from settlement of derivative contracts included in operating activities			20,100	10,000
Foreign Currency Contracts [Member] | Net Investment Hedging [Member]
Derivatives Designated as Hedging Instruments
Net cash inflow from foreign currency contracts			5,200
Net cash outflow on settlement of foreign currency contracts included in investing activities				80,300
Foreign Exchange Contracts, Translation Risk [Member] | Foreign Currency Contracts [Member]
Derivatives Not Designated as Hedging Instruments
Foreign exchange gains (losses) recorded in Foreign currency transactions and other	(6,400)	8,300	(6,200)	12,500
Foreign Exchange Contracts, Transaction Risk [Member] | Foreign Currency Contracts [Member]
Derivatives Not Designated as Hedging Instruments
Foreign exchange gains (losses) recorded in Foreign currency transactions and other	13,400	$ (15,000)	(12,600)	$ (19,000)
Foreign currency derivative instruments not designated as hedging instruments at fair value, net	100		100		200
Foreign exchange derivative liabilities recorded in Accrued expenses and other current liabilities	300		300		100
Foreign exchange derivative assets recorded in Prepaid expenses and other current assets	$ 400		$ 400		$ 300

XML

COMMITMENTS AND CONTINGENCIES (Details) € in Millions	1 Months Ended		3 Months Ended				9 Months Ended	12 Months Ended
	Jan. 31, 2013 USD ($)	Jul. 31, 2009 USD ($)	Sep. 30, 2015 USD ($) Cases	Sep. 30, 2015 EUR (€)	Mar. 31, 2015 USD ($)	Mar. 31, 2013 USD ($)	Sep. 30, 2015 USD ($) Cases	Dec. 31, 2014 USD ($)	Dec. 31, 2012 USD ($)
Travel Transaction Taxes
Cash paid to settle contingent consideration, total			$ 18,400,000
Cash paid to settle contingent consideration, financing activities			10,700,000
Cash paid to settle contingent consideration, operating activities			$ 7,700,000
Litigation related to travel transaction taxes [Member]
Travel Transaction Taxes
Approximate number of lawsuits brought by or against states, cities and counties over issues involving the payment of travel transaction taxes (in cases) | Cases			40				40
Accrual for the potential resolution of issues related to travel transaction taxes (in dollars)			$ 27,000,000				$ 27,000,000	$ 52,000,000
French Tax Audit [Member]
Travel Transaction Taxes
Assessed taxes including interest and penalties | €				€ 350
City and County of San Francisco [Member] | Litigation related to travel transaction taxes [Member]
Travel Transaction Taxes
Assessed taxes including interest and penalties	$ 2,700,000	$ 3,400,000
Hawaii [Member] | Litigation related to travel transaction taxes [Member]
Travel Transaction Taxes
Assessed taxes including interest and penalties						$ 18,700,000			$ 16,500,000
Payments of tax and interest for loss contingency related to travel transaction taxes (in dollars)							600,000	2,200,000
Loss contingency, refund amount based on rulings			13,700,000				4,000,000
Loss contingency, reversal of liability based on rulings					$ 16,400,000
Series of individually immaterial business acquisitions [Member]
Travel Transaction Taxes
Contingent consideration liability			9,000,000				9,000,000	$ 10,700,000
Contingent consideration arrangements, range of outcomes, minimum value			0				0
Contingent consideration arrangements, range of outcomes, maximum value			$ 90,000,000				$ 90,000,000

XML

STOCK-BASED EMPLOYEE COMPENSATION (Details) - Restricted Stock Units and Performance Share Units [Member]	9 Months Ended
	Sep. 30, 2015 $ / shares shares
Share-Based Awards - Shares
Unvested at December 31, 2014 | shares	570,315
Granted (in shares) | shares	185,741
Vested (in shares) | shares	(153,478)
Performance Share Units Adjustment (in shares) | shares	(339)
Forfeited (in shares) | shares	(19,879)
Unvested at September 30, 2015 | shares	582,360
Share-Based Awards - Weighted Average Grant Date Fair Value
Unvested at December 31, 2014	$ 912.26
Granted (in dollars per share)	1,239.56
Vested (in dollars per share)	742.70
Performance Share Units Adjustment (in dollars per share)	1,171.04
Forfeited (in shares)	1,078.86
Unvested at September 30, 2015	$ 1,058.84

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NET INCOME PER SHARE (Tables)

9 Months Ended

Sep. 30, 2015

Earnings Per Share [Abstract]

Reconciliation of the weighted average number of shares outstanding used in calculating diluted earnings per share

A reconciliation of the weighted-average number of shares outstanding used in calculating diluted earnings per share is as follows (in thousands): 

	Three Months Ended September 30,		Nine Months Ended September 30,
	2015	2014	2015	2014
Weighted-average number of basic common shares outstanding	50,550	52,405	51,344	52,319
Weighted-average dilutive stock options, restricted stock units and performance share units	326	272	367	308
Assumed conversion of Convertible Senior Notes	254	347	241	421
Weighted-average number of diluted common and common equivalent shares outstanding	51,130	53,024	51,952	53,048
Anti-dilutive potential common shares	2,627	2,628	2,641	2,577

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OTHER ASSETS (Narrative) (Details) € in Billions	3 Months Ended	9 Months Ended
	Jun. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2015 EUR (€)	Jun. 19, 2015 USD ($)	Mar. 13, 2015 USD ($)	Mar. 03, 2015 EUR (€)	Dec. 31, 2014 USD ($)	Dec. 31, 2014 EUR (€)	Sep. 23, 2014 EUR (€)	Aug. 20, 2014 USD ($)	May. 31, 2013 USD ($)	Mar. 31, 2012 USD ($)	Oct. 31, 2011 USD ($)	Mar. 31, 2010 USD ($)
Debt Instrument
Investments			$ 63,926,000					$ 588,000
Convertible Debt Converted Debt [Member]
Debt Instrument
Charge off of deferred debt issuance cost		$ 500,000
1.00% Convertible Senior Notes Due March 2018 [Member]
Debt Instrument
Aggregate Principal Amount													$ 1,000,000,000
Interest rate on Long-term Debt			1.00%	1.00%				1.00%	1.00%				1.00%
0.35 % Convertible Senior Notes Due June 2020 [Member]
Debt Instrument
Aggregate Principal Amount												$ 1,000,000,000
Interest rate on Long-term Debt			0.35%	0.35%				0.35%	0.35%			0.35%
0.9% Convertible Senior Notes Due September 2021 [Member]
Debt Instrument
Aggregate Principal Amount											$ 1,000,000,000
Interest rate on Long-term Debt			0.90%	0.90%				0.90%	0.90%		0.90%
2.375% Senior Notes Due September 2024 [Member]
Debt Instrument
Aggregate Principal Amount | €				€ 1.0					€ 1.0	€ 1.0
Interest rate on Long-term Debt			2.375%	2.375%				2.375%	2.375%	2.375%
1.8% Senior Notes Due March 2027 [Member]
Debt Instrument
Aggregate Principal Amount | €				€ 1.0			€ 1.0
Interest rate on Long-term Debt			1.80%	1.80%			1.80%
3.65% Senior Notes Due March 2025 [Member]
Debt Instrument
Aggregate Principal Amount						$ 500,000,000
Interest rate on Long-term Debt			3.65%	3.65%		3.65%
1.25% Convertible Senior Notes due March 2015 [Member]
Debt Instrument
Aggregate Principal Amount															$ 575,000,000
Interest rate on Long-term Debt								1.25%	1.25%						1.25%
Revolving Credit Facility [Member]
Debt Instrument
Revolving credit facility, maximum borrowing capacity					$ 2,000,000,000									$ 1,000,000,000
Charge off of deferred debt issuance cost	$ 1,000,000

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INVESTMENTS (Details) - USD ($)			3 Months Ended		9 Months Ended
	May. 26, 2015	Aug. 07, 2014	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Investments
Weighted maturity of investments					1 year 7 months
Marketable Securities, Realized Gain (Loss)			$ (300,000)	$ 0	$ 3,100,000	$ 0
Ctrip.com International, Ltd. [Member]
Investments
Debt Investment, Term	5 years	5 years
Period over which Ctrip ADSs can be acquired	12 months	12 months
Maximum Ownership Percentage in Ctrip	15.00%	10.00%
Short-term Investments [Member]
Investments
Cost			1,211,191,000		1,211,191,000		$ 1,142,881,000
Gross Unrealized Gains			402,000		402,000		39,000
Gross Unrealized Losses			(409,000)		(409,000)		(738,000)
Fair Value			1,211,184,000		1,211,184,000		1,142,182,000
Short-term Investments [Member] | Foreign government securities
Investments
Cost			71,834,000		71,834,000		52,524,000
Gross Unrealized Gains			2,000		2,000		0
Gross Unrealized Losses			(4,000)		(4,000)		(34,000)
Fair Value			71,832,000		71,832,000		52,490,000
Short-term Investments [Member] | U.S. government securities
Investments
Cost			638,131,000		638,131,000		364,276,000
Gross Unrealized Gains			263,000		263,000		24,000
Gross Unrealized Losses			0		0		(34,000)
Fair Value			638,394,000		638,394,000		364,266,000
Short-term Investments [Member] | Corporate debt securities
Investments
Cost			497,498,000		497,498,000		582,160,000
Gross Unrealized Gains			134,000		134,000		15,000
Gross Unrealized Losses			(405,000)		(405,000)		(652,000)
Fair Value			497,227,000		497,227,000		581,523,000
Short-term Investments [Member] | Commercial paper
Investments
Cost			1,716,000		1,716,000		39,092,000
Gross Unrealized Gains			0		0		0
Gross Unrealized Losses			0		0		0
Fair Value			1,716,000		1,716,000		39,092,000
Short-term Investments [Member] | U.S. government agency securities
Investments
Cost			2,012,000		2,012,000		104,829,000
Gross Unrealized Gains			3,000		3,000		0
Gross Unrealized Losses			0		0		(18,000)
Fair Value			2,015,000		2,015,000		104,811,000
Long-term Investments [Member]
Investments
Cost			6,343,675,000		6,343,675,000		3,920,019,000
Gross Unrealized Gains			49,671,000		49,671,000		2,476,000
Gross Unrealized Losses			(65,716,000)		(65,716,000)		(166,842,000)
Fair Value			6,327,630,000		6,327,630,000		3,755,653,000
Long-term Investments [Member] | Foreign government securities
Investments
Cost			485,783,000		485,783,000		12,707,000
Gross Unrealized Gains			381,000		381,000		0
Gross Unrealized Losses			(190,000)		(190,000)		(36,000)
Fair Value			485,974,000		485,974,000		12,671,000
Long-term Investments [Member] | U.S. government securities
Investments
Cost			773,651,000		773,651,000		557,130,000
Gross Unrealized Gains			4,563,000		4,563,000		80,000
Gross Unrealized Losses			0		0		(762,000)
Fair Value			778,214,000		778,214,000		556,448,000
Long-term Investments [Member] | Corporate debt securities
Investments
Cost			3,749,053,000		3,749,053,000		2,332,030,000
Gross Unrealized Gains			6,175,000		6,175,000		2,299,000
Gross Unrealized Losses			(15,001,000)		(15,001,000)		(5,296,000)
Fair Value			3,740,227,000		3,740,227,000		2,329,033,000
Long-term Investments [Member] | U.S. government agency securities
Investments
Cost							95,108,000
Gross Unrealized Gains							97,000
Gross Unrealized Losses							(111,000)
Fair Value							95,094,000
Long-term Investments [Member] | U.S. municipal securities
Investments
Cost			1,089,000		1,089,000		1,114,000
Gross Unrealized Gains			6,000		6,000		0
Gross Unrealized Losses			0		0		(12,000)
Fair Value			1,095,000		1,095,000		1,102,000
Long-term Investments [Member] | Ctrip convertible debt securities | Ctrip.com International, Ltd. [Member]
Investments
Cost	$ 250,000,000	$ 500,000,000	750,000,000		750,000,000		500,000,000
Investments purchased but unsettled by period end, amount			22,100,000		22,100,000
Gross Unrealized Gains			0		0		0
Gross Unrealized Losses			(50,525,000)		(50,525,000)		(74,039,000)
Fair Value			699,475,000		699,475,000		425,961,000
Long-term Investments [Member] | Ctrip equity securities | Ctrip.com International, Ltd. [Member]
Investments
Cost			584,099,000		584,099,000		421,930,000
Gross Unrealized Gains			38,546,000		38,546,000		0
Gross Unrealized Losses			0		0		(86,586,000)
Fair Value			$ 622,645,000		$ 622,645,000		$ 335,344,000

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ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Thousands		Sep. 30, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation adjustments, net of tax (1)	[1]	$ (180,829)	$ (102,758)
Net unrealized gain (loss) on marketable securities, net of tax (2)	[2]	(4,636)	(157,144)
Accumulated other comprehensive loss		(185,465)	(259,902)
Net unrealized gain (loss) on investment securities, before tax		(16,000)	(164,700)
Amount of nontaxable Unrealized Gain/(Loss) on Investments under dutch participation exemption		30,600	(134,600)
Amount of taxable Unrealized Gain/(Loss) on Investments		(46,600)	(30,100)
Euro Senior Notes [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net gains (losses) from fair value adjustments associated with net investment hedges, before tax		181,900	83,800
Euro debt and interest used in net investment hedge, net of tax		106,700	48,300
Foreign Exchange Forward [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Derivatives used in net investment hedge, net of tax		(34,800)	(37,800)
Net gains (losses) from fair value adjustments associated with net investment hedges, before tax		$ (52,600)	$ (57,800)

[1] Foreign currency translation adjustments, net of tax, includes net losses from fair value adjustments at September 30, 2015 of $34.8 million after tax ($52.6 million before tax) and net losses from fair value adjustments at December 31, 2014 of $37.8 million after tax ($57.8 million before tax) associated with derivatives designated as net investment hedges (see Note 5).Foreign currency translation adjustments, net of tax, includes foreign currency transaction gains at September 30, 2015 of $106.7 million after tax ($181.9 million before tax) associated with the Company's 2024 Notes and 2027 Notes and foreign currency transaction gains at December 31, 2014 of $48.3 million after tax ($83.8 million before tax) associated with the Company's 2024 Notes. The 2024 Notes and 2027 Notes are Euro-denominated debt and are designated as hedges of certain of the Company's Euro-denominated net assets (see Note 8). The remaining balance in currency translation adjustments excludes income taxes as a result of the Company's current intention to indefinitely reinvest the earnings of its international subsidiaries outside of the United States.

[2] The unrealized loss before tax at September 30, 2015 was $16.0 million, of which unrealized gains of $30.6 million were exempt from tax under the Dutch participation exemption and unrealized losses of $46.6 million were taxable. The unrealized loss before tax at December 31, 2014 was $164.7 million, of which unrealized losses of $134.6 million were exempt from tax under the Dutch participation exemption and unrealized losses of $30.1 million were taxable.

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UNAUDITED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Stockholders' Equity [Abstract]
Tax (benefit) associated with Net Investment Hedges	$ (89)	$ 18,046	$ 41,930	$ 33,391
Tax (benefit) associated with gain (loss) on marketable securities	$ (2,184)	$ (8,747)	$ (3,804)	$ (8,693)

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DEBT (Narrative) (Details) - USD ($)				1 Months Ended		3 Months Ended				9 Months Ended		12 Months Ended
	Jun. 19, 2015	Aug. 20, 2014	Oct. 31, 2011	May. 31, 2013	Mar. 31, 2012	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2013	Mar. 31, 2010
Debt Instrument
Line of Credit Facility, term (in years)	5 years		5 years
Letters of credit issued						$ 2,500,000				$ 2,500,000		$ 4,000,000
Long-term Debt						5,421,328,000				5,421,328,000		3,849,756,000
Estimated market value of outstanding debt						6,100,000,000				6,100,000,000		4,800,000,000
Description of Senior Notes
Unamortized debt discount						311,562,000				311,562,000		360,312,000
Amortization of debt discount included in interest expense										49,868,000	$ 39,079,000
Gains (Losses) on Extinguishment of Debt										(3,000)	(6,254,000)
Convertible Notes [Member]
Description of Senior Notes
Interest expense related to debt						23,100,000			$ 20,400,000	69,400,000	53,900,000
Contractual coupon interest related to debt included in interest expense						5,600,000			4,600,000	17,000,000	11,600,000
Amortization of debt discount included in interest expense						16,400,000			14,800,000	49,100,000	39,100,000
Amortization of debt issuance costs						1,100,000			1,000,000	3,300,000	3,200,000
Gains (Losses) on Extinguishment of Debt									(200,000)		(6,300,000)
Extinguishment of Debt, Gain (Loss), Net of Tax									(100,000)		(3,800,000)
1.25% Convertible Senior Notes due March 2015 [Member]
Debt Instrument
Reclassification of Unamortized Debt Discount												$ 300,000
Description of Senior Notes
Aggregate Principal Amount																$ 575,000,000
Interest rate on Long-term Debt												1.25%				1.25%
Convertible debt conversion price (in dollars per share)																$ 303.06
Unamortized debt discount												$ 329,000
Debt Conversion Cash Delivered for Principal Due on Converted Debt								$ 37,500,000			$ 121,900,000
Debt Conversion, Converted Instrument, Shares Issued											299,657
Debt Conversion, Converted Instrument, Shares Issued								$ 110,100,000
Debt discount related to convertible notes, net of tax																$ 69,100,000
Debt discount related to convertible notes, before tax																115,200,000
Debt Instrument, Convertible Carrying Amount Of The Equity Component Related To Finance Costs Net Of Tax																$ 1,600,000
1.00% Convertible Senior Notes Due March 2018 [Member]
Debt Instrument
Long-term Debt						$ 942,149,000				$ 942,149,000		$ 925,166,000
Description of Senior Notes
Aggregate Principal Amount					$ 1,000,000,000
Interest rate on Long-term Debt					1.00%	1.00%				1.00%		1.00%
Debt financing costs paid														$ 20,900,000
Convertible debt conversion price (in dollars per share)					$ 944.61
Ratio of closing share price to conversion price as a condition for conversion of convertible 2015 Senior Notes, minimum					150.00%
Unamortized debt discount						$ 57,851,000				$ 57,851,000		$ 74,834,000
Effective interest rate at debt origination or modification					3.50%
Debt discount related to convertible notes, net of tax					$ 80,900,000
Debt discount related to convertible notes, before tax					135,200,000
Debt Instrument, Convertible Carrying Amount Of The Equity Component Related To Finance Costs Net Of Tax					$ 2,800,000
0.35 % Convertible Senior Notes Due June 2020 [Member]
Debt Instrument
Long-term Debt						$ 879,645,000				$ 879,645,000		$ 861,886,000
Description of Senior Notes
Aggregate Principal Amount				$ 1,000,000,000
Interest rate on Long-term Debt				0.35%		0.35%				0.35%		0.35%
Debt financing costs paid													$ 1,000,000
Convertible debt conversion price (in dollars per share)				$ 1,315.10
Ratio of closing share price to conversion price as a condition for conversion of convertible 2015 Senior Notes, minimum				150.00%
Unamortized debt discount				$ 20,000,000		$ 120,355,000				$ 120,355,000		$ 138,114,000
Effective interest rate at debt origination or modification				3.13%
Debt discount related to convertible notes, net of tax															$ 92,400,000
Debt discount related to convertible notes, before tax															154,300,000
Debt Instrument, Convertible Carrying Amount Of The Equity Component Related To Finance Costs Net Of Tax															$ 100,000
Amortization of debt discount included in interest expense						700,000			$ 700,000		$ 2,000,000
0.9% Convertible Senior Notes Due September 2021 [Member]
Debt Instrument
Long-term Debt						$ 877,723,000				$ 877,723,000		$ 863,701,000
Description of Senior Notes
Aggregate Principal Amount		$ 1,000,000,000
Interest rate on Long-term Debt		0.90%				0.90%				0.90%		0.90%
Debt financing costs paid												$ 11,000,000
Convertible debt conversion price (in dollars per share)		$ 2,055.50
Ratio of closing share price to conversion price as a condition for conversion of convertible 2015 Senior Notes, minimum		150.00%
Unamortized debt discount						$ 122,277,000				$ 122,277,000		136,299,000
Effective interest rate at debt origination or modification		3.18%
Debt discount related to convertible notes, net of tax												82,500,000
Debt discount related to convertible notes, before tax												142,900,000
Debt Instrument, Convertible Carrying Amount Of The Equity Component Related To Finance Costs Net Of Tax												1,600,000
Convertible Debt Liability [Member]
Description of Senior Notes
Debt, Weighted Average Interest Rate						3.40%			3.60%	3.40%	3.60%
Minimum [Member] | 1.00% Convertible Senior Notes Due March 2018 [Member]
Description of Senior Notes
Minimum and Maximum consecutive days the closing sales price of common stock must exceed a specified percentage of conversion price to trigger conversion feature of note (in days)					20 days
Additional Payment To Debt Holder Settled In Shares Aggregate Value Of Shares					$ 0
Minimum [Member] | 0.35 % Convertible Senior Notes Due June 2020 [Member]
Description of Senior Notes
Minimum and Maximum consecutive days the closing sales price of common stock must exceed a specified percentage of conversion price to trigger conversion feature of note (in days)				20 days
Additional Payment To Debt Holder Settled In Shares Aggregate Value Of Shares				$ 0
Minimum [Member] | 0.9% Convertible Senior Notes Due September 2021 [Member]
Description of Senior Notes
Minimum and Maximum consecutive days the closing sales price of common stock must exceed a specified percentage of conversion price to trigger conversion feature of note (in days)		20 days
Additional Payment To Debt Holder Settled In Shares Aggregate Value Of Shares		$ 0
Maximum [Member] | 1.00% Convertible Senior Notes Due March 2018 [Member]
Description of Senior Notes
Minimum and Maximum consecutive days the closing sales price of common stock must exceed a specified percentage of conversion price to trigger conversion feature of note (in days)					30 days
Additional Payment To Debt Holder Settled In Shares Aggregate Value Of Shares					$ 344,000,000
Maximum [Member] | 0.35 % Convertible Senior Notes Due June 2020 [Member]
Description of Senior Notes
Minimum and Maximum consecutive days the closing sales price of common stock must exceed a specified percentage of conversion price to trigger conversion feature of note (in days)				30 days
Additional Payment To Debt Holder Settled In Shares Aggregate Value Of Shares				$ 397,000,000
Maximum [Member] | 0.9% Convertible Senior Notes Due September 2021 [Member]
Description of Senior Notes
Minimum and Maximum consecutive days the closing sales price of common stock must exceed a specified percentage of conversion price to trigger conversion feature of note (in days)		30 days
Additional Payment To Debt Holder Settled In Shares Aggregate Value Of Shares		$ 375,000,000
Convertible Debt Converted Debt [Member]
Description of Senior Notes
Charge off of deferred debt issuance cost											$ 500,000
Revolving Credit Facility [Member]
Debt Instrument
Revolving credit facility, maximum borrowing capacity	$ 2,000,000,000		$ 1,000,000,000
Long-term Debt						$ 0				$ 0		$ 0
Description of Senior Notes
Debt financing costs paid						$ 4,000,000.0
Charge off of deferred debt issuance cost							$ 1,000,000
Revolving Credit Facility [Member] | Minimum [Member]
Debt Instrument
Commitment fee rate	0.085%
Revolving Credit Facility [Member] | Maximum [Member]
Debt Instrument
Commitment fee rate	0.20%
Letter of Credit [Member]
Debt Instrument
Revolving credit facility, maximum borrowing capacity	$ 70,000,000
Swingline Loans [Member]
Debt Instrument
Revolving credit facility, maximum borrowing capacity	$ 50,000,000.0
Rate 2C [Member] | Revolving Credit Facility [Member] | Minimum [Member]
Debt Instrument
Basis spread on variable rate	0.00%
Rate 2C [Member] | Revolving Credit Facility [Member] | Maximum [Member]
Debt Instrument
Basis spread on variable rate	0.50%
London Interbank Offered Rate (LIBOR) [Member] | Rate 1 [Member] | Revolving Credit Facility [Member] | Minimum [Member]
Debt Instrument
Basis spread on variable rate	0.875%
London Interbank Offered Rate (LIBOR) [Member] | Rate 1 [Member] | Revolving Credit Facility [Member] | Maximum [Member]
Debt Instrument
Basis spread on variable rate	1.50%
Federal funds rate [Member] | Rate 2B [Member] | Revolving Credit Facility [Member]
Debt Instrument
Basis spread on variable rate	0.50%
One month LIBOR [Member] | Rate 2C [Member] | Revolving Credit Facility [Member]
Debt Instrument
Basis spread on variable rate	1.00%

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OTHER ASSETS (Tables)

9 Months Ended

Sep. 30, 2015

Other Assets, Noncurrent [Abstract]

Components of other assets

Other assets at September 30, 2015 and December 31, 2014 consisted of the following (in thousands): 

	September 30, 2015		December 31, 2014
Deferred debt issuance costs	$	34,827	$	27,204
Security deposits	14,168		12,368
Deferred tax assets	9,912		8,548
Investments	63,926		588
Other	18,426		8,640
Total	$	141,259	$	57,348

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INTANGIBLE ASSETS AND GOODWILL (Tables)

9 Months Ended

Sep. 30, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible assets

The Company's intangible assets at September 30, 2015 and December 31, 2014 consisted of the following (in thousands): 

	September 30, 2015							December 31, 2014
	Gross  Carrying  Amount		Accumulated Amortization			Net  Carrying  Amount		Gross  Carrying  Amount		Accumulated Amortization			Net  Carrying  Amount		Amortization Period	Weighted  Average  Useful Life
Supply and distribution agreements	$	826,860	$	(218,654	)	$	608,206	$	842,642	$	(188,441	)	$	654,201	10 - 20 years	16 years
Technology	111,483		(56,813		)	54,670		108,987		(43,746		)	65,241		1 - 5 years	5 years
Patents	1,623		(1,553		)	70		1,623		(1,524		)	99		15 years	15 years
Internet domain names	38,764		(19,910		)	18,854		41,652		(16,895		)	24,757		2 - 20 years	8 years
Trade names	1,672,122		(163,262		)	1,508,860		1,674,218		(100,850		)	1,573,368		5 - 20 years	20 years
Non-compete agreements	21,900		(9,290		)	12,610		21,000		(3,908		)	17,092		3 - 4 years	3 years
Other	135		(135		)	—		141		(138		)	3
Total intangible assets	$	2,672,887	$	(469,617	)	$	2,203,270	$	2,690,263	$	(355,502	)	$	2,334,761

Annual estimated amortization expense for intangible assets for the remainder of 2015, the next five years and thereafter

The amortization expense for intangible assets for the remainder of 2015, the annual expense for the next five years, and the expense thereafter is expected to be as follows (in thousands): 

2015	$	42,107
2016	167,413
2017	160,088
2018	141,499
2019	131,380
2020	124,089
Thereafter	1,436,694
	$	2,203,270

Goodwill

The change in goodwill for the nine months ended September 30, 2015 consists of the following (in thousands): 

Balance at December 31, 2014	$	3,326,474
Acquisitions	77,720
Currency translation adjustments	(17,675		)
Balance at September 30, 2015	$	3,386,519

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DEBT (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Sep. 30, 2015 EUR (€)	Mar. 13, 2015 USD ($)	Mar. 03, 2015 EUR (€)	Dec. 31, 2014 EUR (€)	Sep. 23, 2014 EUR (€)	Aug. 20, 2014 USD ($)	May. 31, 2013 USD ($)	Mar. 31, 2012 USD ($)	Mar. 31, 2010 USD ($)
Debt Instrument
Amortization of debt discount			$ 49,868,000	$ 39,079,000
Total Carrying Value of Long-Term Debt	$ 5,421,328,000		5,421,328,000		$ 3,849,756,000
Gains (Losses) on Extinguishment of Debt			(3,000)	(6,254,000)
Outstanding Principal Amount	5,732,890,000		5,732,890,000		4,210,068,000
Unamortized Debt Discount	(311,562,000)		(311,562,000)		(360,312,000)
Convertible Notes [Member]
Debt Instrument
Amortization of debt discount	16,400,000	$ 14,800,000	49,100,000	39,100,000
Gains (Losses) on Extinguishment of Debt		(200,000)		(6,300,000)
Extinguishment of Debt, Gain (Loss), Net of Tax		(100,000)		(3,800,000)
Interest expense related to debt	23,100,000	20,400,000	69,400,000	53,900,000
Contractual coupon interest related to debt included in interest expense	5,600,000	4,600,000	17,000,000	11,600,000
Amortization of debt issuance costs	1,100,000	1,000,000	3,300,000	3,200,000
1.25% Convertible Senior Notes due March 2015 [Member]
Debt Instrument
Short-term Debt, Gross					37,524,000
Short-term Debt					37,195,000
Unamortized Debt Discount					$ (329,000)
Interest rate on Long-term Debt					1.25%						1.25%					1.25%
Aggregate Principal Amount																$ 575,000,000
1.00% Convertible Senior Notes Due March 2018 [Member]
Debt Instrument
Total Carrying Value of Long-Term Debt	942,149,000		942,149,000		$ 925,166,000
Outstanding Principal Amount	1,000,000,000		1,000,000,000		1,000,000,000
Unamortized Debt Discount	$ (57,851,000)		$ (57,851,000)		$ (74,834,000)
Interest rate on Long-term Debt	1.00%		1.00%		1.00%			1.00%			1.00%				1.00%
Aggregate Principal Amount															$ 1,000,000,000
Debt financing costs paid							$ 20,900,000
Effective interest rate at debt origination or modification															3.50%
0.35 % Convertible Senior Notes Due June 2020 [Member]
Debt Instrument
Amortization of debt discount	$ 700,000	$ 700,000		$ 2,000,000
Total Carrying Value of Long-Term Debt	879,645,000		$ 879,645,000		$ 861,886,000
Outstanding Principal Amount	1,000,000,000		1,000,000,000		1,000,000,000
Unamortized Debt Discount	$ (120,355,000)		$ (120,355,000)		$ (138,114,000)									$ (20,000,000)
Interest rate on Long-term Debt	0.35%		0.35%		0.35%			0.35%			0.35%			0.35%
Aggregate Principal Amount														$ 1,000,000,000
Debt financing costs paid						$ 1,000,000
Effective interest rate at debt origination or modification														3.13%
0.9% Convertible Senior Notes Due September 2021 [Member]
Debt Instrument
Total Carrying Value of Long-Term Debt	$ 877,723,000		$ 877,723,000		$ 863,701,000
Outstanding Principal Amount	1,000,000,000		1,000,000,000		1,000,000,000
Unamortized Debt Discount	$ (122,277,000)		$ (122,277,000)		$ (136,299,000)
Interest rate on Long-term Debt	0.90%		0.90%		0.90%			0.90%			0.90%		0.90%
Aggregate Principal Amount													$ 1,000,000,000
Debt financing costs paid					$ 11,000,000
Effective interest rate at debt origination or modification													3.18%
2.375% Senior Notes Due September 2024 [Member]
Debt Instrument
Total Carrying Value of Long-Term Debt	$ 1,106,939,000		$ 1,106,939,000		1,199,003,000
Outstanding Principal Amount	1,116,445,000		1,116,445,000		1,210,068,000
Unamortized Debt Discount	$ (9,506,000)		$ (9,506,000)		$ (11,065,000)							€ (9,400,000)
Interest rate on Long-term Debt	2.375%		2.375%		2.375%			2.375%			2.375%	2.375%
Aggregate Principal Amount | €								€ 1,000,000,000			€ 1,000,000,000	€ 1,000,000,000
Debt financing costs paid					$ 6,500,000
Effective interest rate at debt origination or modification												2.48%
3.65% Senior Notes Due March 2025 [Member]
Debt Instrument
Total Carrying Value of Long-Term Debt	$ 498,769,000		$ 498,769,000
Outstanding Principal Amount	500,000,000		500,000,000
Unamortized Debt Discount	$ (1,231,000)		$ (1,231,000)						$ (1,300,000.0)
Interest rate on Long-term Debt	3.65%		3.65%					3.65%	3.65%
Aggregate Principal Amount									$ 500,000,000
Debt financing costs paid			$ 3,200,000
Effective interest rate at debt origination or modification									3.68%
1.8% Senior Notes Due March 2027 [Member]
Debt Instrument
Total Carrying Value of Long-Term Debt	$ 1,116,103,000		1,116,103,000
Outstanding Principal Amount	1,116,445,000		1,116,445,000
Unamortized Debt Discount	$ (342,000)		$ (342,000)							€ (300,000.0)
Interest rate on Long-term Debt	1.80%		1.80%					1.80%		1.80%
Aggregate Principal Amount | €								€ 1,000,000,000		€ 1,000,000,000
Debt financing costs paid			$ 6,300,000
Effective interest rate at debt origination or modification										1.80%
Other Long-term Debt [Member]
Debt Instrument
Amortization of debt discount	$ 200,000		700,000
Interest expense related to debt	16,800,000		43,000,000
Contractual coupon interest related to debt included in interest expense	16,200,000		41,300,000
Amortization of debt issuance costs	$ 400,000		$ 1,000,000
Convertible Debt Liability [Member]
Debt Instrument
Debt, Weighted Average Interest Rate	3.40%	3.60%	3.40%	3.60%
Convertible Debt Converted Debt [Member]
Debt Instrument
Charge off of deferred debt issuance cost				$ 500,000

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DEBT (Tables)

9 Months Ended

Sep. 30, 2015

Debt Disclosure [Abstract]

Schedule of Debt [Table Text Block]

Outstanding Debt

Outstanding debt as of September 30, 2015 consisted of the following (in thousands): 

September 30, 2015	Outstanding Principal  Amount		Unamortized Debt Discount			Carrying Value
Long-term debt:
1.0% Convertible Senior Notes due March 2018	$	1,000,000	$	(57,851	)	$	942,149
0.35% Convertible Senior Notes due June 2020	1,000,000		(120,355		)	879,645
0.9% Convertible Senior Notes due September 2021	1,000,000		(122,277		)	877,723
2.375% (€1 Billion) Senior Notes due September 2024	1,116,445		(9,506		)	1,106,939
3.65% Senior Notes due March 2025	500,000		(1,231		)	498,769
1.8% (€1 Billion) Senior Notes due March 2027	1,116,445		(342		)	1,116,103
Total long-term debt	$	5,732,890	$	(311,562	)	$	5,421,328

Outstanding debt as of December 31, 2014 consisted of the following (in thousands): 

December 31, 2014	Outstanding Principal  Amount		Unamortized Debt Discount			Carrying Value
Short-term debt:
1.25% Convertible Senior Notes due March 2015	$	37,524	$	(329	)	$	37,195
Long-term debt:
1.0% Convertible Senior Notes due March 2018	$	1,000,000	$	(74,834	)	$	925,166
0.35% Convertible Senior Notes due June 2020	1,000,000		(138,114		)	861,886
0.9% Convertible Senior Notes due September 2021	1,000,000		(136,299		)	863,701
2.375% (€1 Billion) Senior Notes due September 2024	1,210,068		(11,065		)	1,199,003
Total long-term debt	$	4,210,068	$	(360,312	)	$	3,849,756

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ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)

9 Months Ended

Sep. 30, 2015

Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]

Balances for each classification of accumulated other comprehensive income (loss)

The table below provides the balances for each classification of accumulated other comprehensive loss as of September 30, 2015 and December 31, 2014 (in thousands): 

	September 30, 2015			December 31, 2014
Foreign currency translation adjustments, net of tax (1)	$	(180,829	)	$	(102,758	)
Net unrealized gain (loss) on marketable securities, net of tax (2)	(4,636		)	(157,144		)
Accumulated other comprehensive loss	$	(185,465	)	$	(259,902	)

(1) Foreign currency translation adjustments, net of tax, includes net losses from fair value adjustments at September 30, 2015 of $34.8 million after tax ($52.6 million before tax) and net losses from fair value adjustments at December 31, 2014 of $37.8 million after tax ($57.8 million before tax) associated with derivatives designated as net investment hedges (see Note 5).

Foreign currency translation adjustments, net of tax, includes foreign currency transaction gains at September 30, 2015 of $106.7 million after tax ($181.9 million before tax) associated with the Company's 2024 Notes and 2027 Notes and foreign currency transaction gains at December 31, 2014 of $48.3 million after tax ($83.8 million before tax) associated with the Company's 2024 Notes. The 2024 Notes and 2027 Notes are Euro-denominated debt and are designated as hedges of certain of the Company's Euro-denominated net assets (see Note 8).

The remaining balance in currency translation adjustments excludes income taxes as a result of the Company's current intention to indefinitely reinvest the earnings of its international subsidiaries outside of the United States.

(2) The unrealized loss before tax at September 30, 2015 was $16.0 million, of which unrealized gains of $30.6 million were exempt from tax under the Dutch participation exemption and unrealized losses of $46.6 million were taxable. The unrealized loss before tax at December 31, 2014 was $164.7 million, of which unrealized losses of $134.6 million were exempt from tax under the Dutch participation exemption and unrealized losses of $30.1 million were taxable.

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UNAUDITED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY - 9 months ended Sep. 30, 2015 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Accumulated Earnings	Accumulated Other Comprehensive Loss
Balance at Dec. 31, 2014	$ 8,566,694	$ 480	$ (2,737,585)	$ 4,923,196	$ 6,640,505	$ (259,902)
Balance (in shares) at Dec. 31, 2014		61,821	(9,888)
Increase (Decrease) in Stockholders' Equity
Net income applicable to common stockholders	2,047,091				2,047,091
Foreign currency translation adjustments, net of tax of $41,930	(78,071)					(78,071)
Unrealized gain on marketable securities, net of tax benefit of $3,804	152,508					152,508
Reclassification adjustment for convertible debt in mezzanine	329			329
Exercise of stock options and vesting of restricted stock units and performance share units	19,139	$ 2		19,137
Exercise of stock options and vesting of restricted stock units and/or performance share units (in shares)		206
Repurchase of common stock	(2,335,815)		$ (2,335,815)
Repurchase of common stock (in shares)			(1,960)
Stock-based compensation and other stock-based payments	174,068			174,068
Conversion of debt	(110,105)	$ 0		(110,105)
Conversion of debt (in shares)		0
Excess tax benefits on stock-based awards	90,935			90,935
Balance (in shares) at Sep. 30, 2015		62,027	(11,848)
Balance at Sep. 30, 2015	$ 8,526,773	$ 482	$ (5,073,400)	$ 5,097,560	$ 8,687,596	$ (185,465)

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BASIS OF PRESENTATION details (Details) $ in Millions	Sep. 30, 2015 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Unamortized debt issuance expense, excluding revolving credit facilities	$ 31.1

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INTANGIBLE ASSETS AND GOODWILL (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Finite-lived intangible assets
Gross Carrying Amount	$ 2,672,887		$ 2,672,887		$ 2,690,263
Accumulated Amortization	(469,617)		(469,617)		(355,502)
Net Carrying Amount	2,203,270		2,203,270		2,334,761
Amortization	42,200	$ 35,800	128,210	$ 81,558
Annual estimated amortization expense for intangible assets
2015	42,107		42,107
2016	167,413		167,413
2017	160,088		160,088
2018	141,499		141,499
2019	131,380		131,380
2020	124,089		124,089
Thereafter	1,436,694		1,436,694
Total	2,203,270		2,203,270
Goodwill:
Balance at December 31, 2014			3,326,474
Acquisitions			77,720
Currency translation adjustments			(17,675)
Balance at September 30, 2015	3,386,519		3,386,519
Supply and distribution agreements [Member]
Finite-lived intangible assets
Gross Carrying Amount	826,860		826,860		842,642
Accumulated Amortization	(218,654)		(218,654)		(188,441)
Net Carrying Amount	608,206		$ 608,206		654,201
Finite lived intangibles, weighted average useful life			16 years
Technology [Member]
Finite-lived intangible assets
Gross Carrying Amount	111,483		$ 111,483		108,987
Accumulated Amortization	(56,813)		(56,813)		(43,746)
Net Carrying Amount	54,670		$ 54,670		65,241
Finite lived intangibles, weighted average useful life			5 years
Patents [Member]
Finite-lived intangible assets
Gross Carrying Amount	1,623		$ 1,623		1,623
Accumulated Amortization	(1,553)		(1,553)		(1,524)
Net Carrying Amount	70		$ 70		99
Amortization period (in years)			15 years
Finite lived intangibles, weighted average useful life			15 years
Internet domain names [Member]
Finite-lived intangible assets
Gross Carrying Amount	38,764		$ 38,764		41,652
Accumulated Amortization	(19,910)		(19,910)		(16,895)
Net Carrying Amount	18,854		$ 18,854		24,757
Finite lived intangibles, weighted average useful life			8 years
Trade Names [Member]
Finite-lived intangible assets
Gross Carrying Amount	1,672,122		$ 1,672,122		1,674,218
Accumulated Amortization	(163,262)		(163,262)		(100,850)
Net Carrying Amount	1,508,860		$ 1,508,860		1,573,368
Finite lived intangibles, weighted average useful life			20 years
Noncompete Agreements [Member]
Finite-lived intangible assets
Gross Carrying Amount	21,900		$ 21,900		21,000
Accumulated Amortization	(9,290)		(9,290)		(3,908)
Net Carrying Amount	12,610		$ 12,610		17,092
Finite lived intangibles, weighted average useful life			3 years
Other [Member]
Finite-lived intangible assets
Gross Carrying Amount	135		$ 135		141
Accumulated Amortization	(135)		(135)		(138)
Net Carrying Amount	0		$ 0		$ 3
Minimum [Member] | Supply and distribution agreements [Member]
Finite-lived intangible assets
Amortization period (in years)			10 years
Minimum [Member] | Technology [Member]
Finite-lived intangible assets
Amortization period (in years)			1 year
Minimum [Member] | Internet domain names [Member]
Finite-lived intangible assets
Amortization period (in years)			2 years
Minimum [Member] | Trade Names [Member]
Finite-lived intangible assets
Amortization period (in years)			5 years
Minimum [Member] | Noncompete Agreements [Member]
Finite-lived intangible assets
Amortization period (in years)			3 years
Maximum [Member] | Supply and distribution agreements [Member]
Finite-lived intangible assets
Amortization period (in years)			20 years
Maximum [Member] | Technology [Member]
Finite-lived intangible assets
Amortization period (in years)			5 years
Maximum [Member] | Internet domain names [Member]
Finite-lived intangible assets
Amortization period (in years)			20 years
Maximum [Member] | Trade Names [Member]
Finite-lived intangible assets
Amortization period (in years)			20 years
Maximum [Member] | Noncompete Agreements [Member]
Finite-lived intangible assets
Amortization period (in years)			4 years
OpenTable [Member]
Goodwill:
Balance at September 30, 2015	1,500,000		$ 1,500,000
Reporting Unit, Amount of Carrying Value	$ 2,500,000		$ 2,500,000

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UNAUDITED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 1,841,658	$ 3,148,651
Restricted cash	827	843
Short-term investments	1,211,184	1,142,182
Accounts receivable, net of allowance for doubtful accounts of $17,149 and $14,212, respectively	890,532	643,894
Prepaid expenses and other current assets	264,256	178,050
Deferred income taxes	90,500	153,754
Total current assets	4,298,957	5,267,374
Property and equipment, net	257,135	198,953
Intangible assets, net	2,203,270	2,334,761
Goodwill	3,386,519	3,326,474
Long-term investments	6,327,630	3,755,653
Other assets	141,259	57,348
Total assets	16,614,770	14,940,563
Current liabilities:
Accounts payable	388,528	281,480
Accrued expenses and other current liabilities	780,784	600,758
Deferred merchant bookings	413,495	460,558
Convertible debt	0	37,195
Total current liabilities	1,582,807	1,379,991
Deferred income taxes	952,388	1,040,260
Other long-term liabilities	131,474	103,533
Long-term debt	5,421,328	3,849,756
Total liabilities	8,087,997	6,373,540
Convertible debt	0	329
Stockholders' equity:
Common stock, $0.008 par value; authorized 1,000,000,000 shares, 62,026,743 and 61,821,097 shares issued, respectively	482	480
Treasury stock, 11,847,933 and 9,888,024 shares, respectively	(5,073,400)	(2,737,585)
Additional paid-in capital	5,097,560	4,923,196
Accumulated earnings	8,687,596	6,640,505
Accumulated other comprehensive loss	(185,465)	(259,902)
Total stockholders' equity	8,526,773	8,566,694
Total liabilities and stockholders' equity	$ 16,614,770	$ 14,940,563

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TREASURY STOCK (Details) - USD ($) $ in Millions	1 Months Ended	9 Months Ended
	Oct. 30, 2015	Sep. 30, 2015	Sep. 30, 2014	Mar. 31, 2015	Dec. 31, 2014
Subsequent Event [Line Items]
Treasury Stock Shares Acquired Excluding Shares Paid for Tax Withholding for Share-based Compensation		1,897,446
Treasury Stock Value Acquired, Cost Method Excluding Shares Paid Value for Tax Withholding for Share-based Compensation		$ 2,300.0
Treasury stock acquired repurchase authorization additional value				$ 3,000.0
Treasury Stock Repurchased but unsettled by period end		57,241
Treasury stock value acquired, excluding shares paid value for tax withholding for share-based compensation		$ 68.4
Remaining authorization of repurchase common stock		$ 748.8
Repurchase of common shares to satisfy employee withholding tax obligations related to stock-based compensation (in shares)		62,463	73,502
Repurchase of common shares to satisfy employee withholding tax obligations related to stock-based compensation		$ 77.4	$ 98.2
Treasury stock, shares (in shares)		11,847,933			9,888,024
Subsequent Event [Member]
Subsequent Event [Line Items]
Treasury Stock Shares Acquired Excluding Shares Paid for Tax Withholding for Share-based Compensation	397,038
Treasury Stock Value Acquired, Cost Method Excluding Shares Paid Value for Tax Withholding for Share-based Compensation	$ 519.6

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UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net income		$ 1,196,732	$ 1,062,253	$ 2,047,091	$ 1,969,922
Other comprehensive income (loss), net of tax
Foreign currency translation adjustments	[1]	(8,043)	(124,412)	(78,071)	(130,997)
Unrealized gain (loss) on marketable securities	[2]	(134,299)	(26,127)	152,508	(25,936)
Comprehensive income		$ 1,054,390	$ 911,714	$ 2,121,528	$ 1,812,989

[1] Net of tax benefit of $89 and tax of $41,930 for the three and nine months ended September 30, 2015, respectively, and net of tax of $18,046 and $33,391 for the three and nine months ended September 30, 2014, respectively, associated with net investment hedges. See Note 11.

[2] Net of tax benefit of $2,184 and $3,804 for the three and nine months ended September 30, 2015, respectively, and net of tax benefit of $8,747 and $8,693 for the three and nine months ended September 30, 2014, respectively.

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STOCK-BASED EMPLOYEE COMPENSATION (Schedule of Assumed Stock Options) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Vested and exercisable as of September 30, 2015 and unvested expected to vest thereafter, net of estimated forfeitures
Allocated Share-based Compensation Expense	$ 58,274	$ 46,136	$ 172,446	$ 120,108
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options exercised, total intrinsic value			$ 42,800	$ 43,700
Share Based Compensation Arrangement By Share Based Payment Award Options Vested in Period Number Of Shares			29,527	26,765
Number of Shares
Beginning balance (in shares)			146,385
Assumed in acquisitions (in shares)			1,422
Exercised (in shares)			(49,213)
Forfeited (in shares)			(4,103)
Ending balance (in shares)	94,491.000		94,491.000		146,385
Weighted-Average Exercise Price
Beginning balance (in dollars per share)			$ 380.05
Assumed in acquisitions (in dollars per share)			230.37
Exercised (in dollars per share)			354.88
Forfeited (in dollars per share)			527.59
Ending balance (in dollars per share)	$ 384.44		$ 384.44		$ 380.05
Aggregate Intrinsic Value	$ 80,546		$ 80,546		$ 111,277
Weighted Average Remaining Contractual Term			5 years 10 months		6 years 6 months
Vested and exercisable as of September 30, 2015
Number of Shares	69,473		69,473
Weighted Average Exercise Price (in dollars per share)	$ 342.20		$ 342.20
Aggregate Intrinsic Value	$ 62,155		$ 62,155
Weighted Average Remaining Contractual Term, Exercisable			5 years 4 months
Vested and exercisable as of September 30, 2015 and unvested expected to vest thereafter, net of estimated forfeitures
Number of Shares	93,852		93,852
Weighted Average Exercise Price (in dollars per share)	$ 384.28		$ 384.28
Aggregate Intrinsic Value	$ 80,016		$ 80,016
Weighted Average Remaining Contractual Term			5 years 9 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value			$ 19,900	$ 13,500
Allocated Share-based Compensation Expense	$ 4,800	$ 8,100	$ 19,800	$ 14,900

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COMMITMENTS AND CONTINGENCIES

9 Months Ended

Sep. 30, 2015

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES

Competition Reviews

Certain business practices common to the online travel industry have become the subject of investigations by various national competition authorities ("NCAs"), particularly in Europe. Investigations related to Booking.com's contractual parity arrangements with accommodation providers, sometimes also referred to as "most favored nation" or "MFN" provisions, were initiated by NCAs in France, Germany, Italy, Austria, Sweden, Ireland and Switzerland, and a number of other NCAs are looking at these issues.  The investigations primarily relate to whether Booking.com's price parity provisions are anti-competitive because they require accommodation providers to provide Booking.com with room rates that are at least as low as those offered to other online travel companies ("OTCs") or through the accommodation provider's website.

On April 21, 2015, the French, Italian and Swedish NCAs, working in close cooperation with the European Commission, announced that they had accepted "commitments" offered by Booking.com to resolve and close the investigations in France, Italy and Sweden. Under the commitments, Booking.com replaced its existing price parity agreements with accommodation providers with "narrow" price parity agreements. Under a "narrow" price parity agreement, subject to certain exceptions, an accommodation provider is still required to offer the same or better rates on Booking.com as it offers to a consumer directly online, but it is no longer required to offer the same or better rates on Booking.com as it offers to other OTCs. The commitments also allow an accommodation provider to, among other things, offer different terms and conditions (e.g., free WiFi) and availability to consumers that book with on-line travel companies that offer lower rates of commission or other benefits, offer lower rates to consumers that book through off-line channels and continue to discount through, among other things, accommodation loyalty programs, as long as those rates are not published or marketed online. The commitments apply to accommodations in France, Italy and Sweden and were effective on July 1, 2015. The foregoing description is a summary only and is qualified in its entirety by reference to the commitments published by the NCAs on April 21, 2015. On October 6, 2015 the Irish NCA closed its investigation on the basis of identical commitments to those given to the French, Italian and Swedish NCAs.

The Company is in ongoing discussions with various NCAs in other countries regarding their concerns. On July 1, 2015, Booking.com voluntarily implemented the commitments given to the French, Italian and Swedish NCAs throughout the European Economic Area and Switzerland and is working with certain other European NCAs towards closing their investigations or inquiries. A number of additional NCAs in the European Economic Area have now closed their investigations following Booking.com's implementation of the commitments in their jurisdictions. However, the Company is currently unable to predict the impact the implementation of these commitments throughout the European Economic Area and Switzerland will have on Booking.com's business or on the on-going investigations in other European countries, or on industry practice more generally. In particular, the Company notes that the German NCA has alleged that any parity requirements (narrow or otherwise) are anti-competitive and has required Hotel Reservation Service to remove its rate parity clause from its contracts with hotels (Hotel Reservation Service's initial appeal was denied). The Company expects the German NCA to impose similar requirements on Booking.com. The Company is unable to predict how the investigations in the other countries will ultimately be resolved. Possible outcomes include requiring Booking.com to amend or remove its rate parity clause from its contracts with accommodation providers in those jurisdictions and/or the imposition of fines. An Italian hotel association has filed an appeal in respect of the Italian NCA's decision to accept the commitments by Booking.com, and the Company is unable to predict the outcome of that appeal.

In August 2015, French legislation known as the "Macron Law" became effective. Among other things, the Macron Law makes price parity agreements illegal, including the "narrow" price parity agreements agreed to by the French NCA in April 2015. The law also requires that agreements between OTCs and hotels comply with a French contract form called a "mandatory contract." It is not yet clear what, if any, action can be taken in response to the law or how it may affect the Company's business in France. Similar legislation prohibiting "narrow" price parity agreements has been proposed in Italy and currently is awaiting action by the Italian Senate. It is not yet clear whether the legislation will be enacted or, if it is, how it may affect the Company's business in Italy.

Prior to the initiation of the investigations described above, Booking.com, along with certain other parties, was the subject of an investigation by competition authorities in the United Kingdom related to alleged agreements or concerted practices between hotels and Booking.com and at least one other OTC that restricted Booking.com's (and the other OTC's) ability to discount hotel room reservations and that this was a form of resale price maintenance. The investigation was initially closed based on commitments by the parties, including Booking.com, that provided that (a) while hotels would continue to be able to set retail prices for hotel room reservations on OTC websites, OTCs would have the flexibility to discount a hotel's retail price up to the OTC's commission, but only to members of closed groups (a concept that is defined in the commitments) who have previously made a reservation through the OTC and (b) rate parity clauses would not apply to rates provided by other OTCs or hotels to members of their closed groups so long as the discounted rate is not made public. The U.K. Competition Appeal Tribunal ("CAT") vacated the resolution of the investigation on appeal and remitted the matter to the U.K. Competition and Markets Authority ("CMA") for reconsideration in September 2014. The CMA did not appeal the CAT's decision, and on September 16, 2015 the CMA closed its investigation on administrative grounds, making no findings as to the legality of the discounting restrictions.

To the extent that regulatory authorities impose fines on the Company or require changes to the Company's business practices or to those currently common to the industry, the Company's business, competitive position and results of operations could be materially and adversely affected. Negative publicity regarding any such investigations could adversely affect the Company's brands and therefore its market share and results of operations. Further, the Macron Law and any similar legislation enacted by other countries, or a decision by the German NCA to prohibit any price parity requirements, could have a material adverse effect on the Company's business and its results of operations, in particular if consumers use its services to shop for accommodation reservations but make their reservations directly with an accommodation provider.

Litigation Related to Travel Transaction Taxes

The Company and certain third-party OTCs are currently involved in approximately forty lawsuits, including certified and putative class actions, brought by or against U.S. states, cities and counties over issues involving the payment of travel transaction taxes (e.g., hotel occupancy taxes, excise taxes, sales taxes, etc.).  The Company's subsidiaries priceline.com LLC, Lowestfare.com LLC and Travelweb LLC are named in some but not all of these cases.  Generally, the complaints allege, among other things, that the OTCs violated each jurisdiction's respective relevant travel transaction tax ordinance with respect to the charge and remittance of amounts to cover taxes under each law.  The complaints typically seek compensatory damages, disgorgement, penalties available by law, attorneys' fees and other relief.  In addition, several U.S. jurisdictions have initiated audit proceedings, issued proposed tax assessments or started inquiries relating to the payment of travel transaction taxes.  Additional state and local jurisdictions are likely to assert that the Company is subject to travel transaction taxes and could seek to collect such taxes, retroactively and/or prospectively.

With respect to the principal claims in these matters, the Company believes that the laws at issue do not apply to the services it provides, namely the facilitation of travel reservations, and, therefore, that it does not owe the taxes that are claimed to be owed.  Rather, the Company believes that the laws at issue generally impose travel transaction taxes on entities that own, operate or control hotels (or similar businesses) or furnish or provide hotel rooms or similar accommodations or other travel services.  In addition, in many of these matters, the taxing jurisdictions have asserted claims for "conversion" - essentially, that the Company has collected a tax and wrongfully "pocketed" those tax dollars - a claim that the Company believes is without basis and has contested.  The taxing jurisdictions that are currently involved in litigation and other proceedings with the Company, and that may be involved in future proceedings, have asserted contrary positions and will likely continue to do so.  From time to time, the Company has found it expedient to settle, and may in the future agree to settle, claims pending in these matters without conceding that the claims at issue are meritorious or that the claimed taxes are in fact due to be paid.

In connection with some of these tax audits and assessments, the Company may be required to pay any assessed taxes, which amounts may be substantial, prior to being allowed to contest the assessments and the applicability of the laws in judicial proceedings.  This requirement is commonly referred to as "pay to play" or "pay first."  For example, the City and County of San Francisco assessed the Company approximately $3.4 million (an amount that includes interest and penalties) relating to hotel occupancy taxes, which the Company paid in July 2009, and issued a second assessment totaling approximately $2.7 million, which the Company paid in January 2013.  Payment of these amounts, if any, is not an admission that the Company believes it is subject to such taxes.  In the San Francisco action, for example, the court ruled in February 2013 that the Company and OTCs do not owe transient accommodations tax to the city and ordered the city to refund the amount paid in July 2009; the Company also is seeking a refund of the amount paid in January 2013. San Francisco has appealed the court's ruling and has not refunded the amount paid in July 2009 pending resolution of the appeal. The matter has been stayed while the appeal in another case with the City of San Diego is pending before the California Supreme Court.

In a mixed decision, on March 17, 2015, the Hawaii Supreme Court affirmed a ruling of the Tax Appeal Court for the State of Hawaii holding that the Company and other OTCs are not liable for the State's transient accommodations tax and upheld, in part, the Tax Court's ruling that the OTCs, including the Company, are liable for the State's general excise tax ("GET") on the margin and fee retained by an OTC as compensation in a transaction. The Hawaii Supreme Court reversed that portion of the Tax Court's decision that had held that OTCs are liable for GET on the full amount the OTC collects from the customer for a hotel room reservation, not just margin and fee, without any offset for amounts passed through to the hotel. The Company had recorded an accrual for travel transaction taxes (including estimated interest and penalties), with a corresponding charge to cost of revenues, of approximately $16.5 million in December 2012 and approximately $18.7 million in the three months ended March 31, 2013, primarily related to the Tax Court ruling. Also, during the year ended December 31, 2014 and nine months ended September 30, 2015, the Company had paid approximately $2.2 million and $0.6 million, respectively, to the State of Hawaii related to the Tax Court ruling. The March 2015 ruling by the Hawaii Supreme Court significantly reduced the Company's (and other OTCs') liability under the GET statute since GET is now owed only on the Company's margin and fee, not the gross amount charged to a customer in a transaction. As a result, the Company reduced its accrual for travel transaction taxes (including estimated interest and penalties) by $16.4 million with a corresponding reduction to cost of revenues in the first quarter of 2015. In addition, the Company recognized a net reduction in cost of revenue in the third quarter of 2015 of $13.7 million related to travel transaction taxes, principally due to a cash refund from the State of Hawaii for payments made in 2013. The Company is seeking additional refund from the State of Hawaii totaling approximately $4 million in tax previously paid in excess of its actual liability, which will be recorded as a reduction in cost of revenues in the periods in which the cash refunds are received.

Litigation is subject to uncertainty and there could be adverse developments in these pending or future cases and proceedings. An unfavorable outcome or settlement of pending litigation may encourage the commencement of additional litigation, audit proceedings or other regulatory inquiries and also could result in substantial liabilities for past and/or future bookings, including, among other things, interest, penalties, punitive damages and/or attorneys' fees and costs.  In connection with some of these tax audits and assessments, the Company may be required to pay any assessed taxes, which amounts may be substantial, prior to being allowed to contest the assessments and the applicability of the laws in judicial proceedings. This requirement is commonly referred to as "pay to play" or "pay first." There have been, and will continue to be, substantial ongoing costs, which may include "pay first" payments, associated with defending the Company's position in pending and any future cases or proceedings.  An adverse outcome in one or more of these unresolved proceedings could have a material adverse effect on the Company's business and could be material to the Company's results of operations or cash flow in any given operating period. However, the Company believes that even if it were to suffer adverse determinations in the near term in more of the pending proceedings than currently anticipated, given results to date it would not have a material impact on the Company's liquidity because of the Company's available cash.

To the extent that any tax authority succeeds in asserting that the Company's services are subject to travel transaction taxes and that the Company has a tax collection responsibility for those taxes, or the Company determines that it has such a responsibility, with respect to future transactions, the Company may collect any such additional tax obligation from its customers, which would have the effect of increasing the cost of travel reservations to its customers and, consequently, could make the Company's travel reservation services less competitive (as compared to the services of other OTCs or travel service providers) and reduce the Company's travel reservation transactions; alternatively, the Company could choose to reduce the compensation for its services.  Either action could have a material adverse effect on the Company's business and results of operations.

In many of the judicial and other proceedings initiated to date, the taxing jurisdictions seek not only historical taxes that are claimed to be owed on the Company's gross profit, but also, among other things, interest, penalties, punitive damages and/or attorneys' fees and costs.  In addition, some jurisdictions have attempted to seek tax from the Company on amounts that the Company has already remitted to hotels for payment to taxing authorities. Therefore, any liability associated with travel transaction tax matters is not constrained to the Company's liability for tax owed on its historical gross profit, but may also include, among other things, tax on the amounts paid to hotels (as well as on our margin), penalties, interest and attorneys' fees.  With respect to taxing jurisdictions that have not initiated proceedings to date, it is possible that they will do so in the future or that they will seek to amend their tax statutes and seek to collect taxes from the Company only on a prospective basis.

Accrual for Travel Transaction Taxes

As a result of this litigation and other attempts by jurisdictions to levy similar taxes, the Company has established an accrual (including estimated interest and penalties) for the potential resolution of issues related to travel transaction taxes in the amount of approximately $27 million at September 30, 2015 and $52 million at December 31, 2014. The March 2015 ruling by the Hawaii Supreme Court significantly reduced the Company's (and other OTCs') liability and as a result the Company reduced its accrual for travel transaction taxes (including estimated interest and penalties) by $16.4 million with a corresponding reduction to cost of revenues in the first quarter of 2015. The Company's legal expenses for these matters are expensed as incurred and are not reflected in the amount accrued. The actual cost may be less or greater, potentially significantly, than the liabilities recorded. An estimate for a reasonably possible loss or range of loss in excess of the amount accrued cannot be reasonably made.

Patent Infringement

On February 9, 2015, International Business Machines Corporation ("IBM") filed a complaint in the U.S. District Court for the District of Delaware against The Priceline Group Inc. and its subsidiaries KAYAK Software Corporation, OpenTable, Inc. and priceline.com LLC (the "Subject Companies").  In the complaint, IBM alleges that the Subject Companies have infringed and continue to willfully infringe certain IBM patents that IBM claims relate to the presentation of applications and advertising in an interactive service, preserving state information in online transactions and single sign-on processes in a computing environment and seeks unspecified damages (including a request that the amount of compensatory damages be trebled), injunctive relief and costs and reasonable attorneys’ fees.  The Company believes the claims to be without merit and intends to contest them.

French Tax Audit

French tax authorities have been conducting an audit of the years 2006 through 2012 to determine whether the Company is in compliance with its tax obligations in France, and the Company currently expects to receive a formal assessment in the fourth quarter of 2015.  While the Company believes that it has been, and continues to be, in compliance with French tax law, as a result of the audit the Company expects the French tax authorities to claim that Booking.com has a permanent establishment in France and seek to recover unpaid income taxes and value-added taxes ("VAT") of approximately 350 million Euros, the majority of which would represent penalties and interest.  The Company intends to contest any such assessment. If the Company is unable to resolve the matter with the French authorities, it would expect to challenge the assessment in the French courts. In order to contest the assessment in court, the Company would be required to pay, upfront, the full amount of any such assessment, though any such payment would not constitute an admission by it that it owes the tax. French authorities may decide to also audit subsequent tax years, which could result in additional assessments.

Other

The Company intends to defend against the claims in all of the proceedings described in this Note 12.  The Company has accrued for certain legal contingencies where it is probable that a loss has been incurred and the amount can be reasonably estimated.  Such accrued amounts are not material to the Company's consolidated balance sheets and provisions recorded have not been material to the Company's consolidated results of operations or cash flows.  An estimate for a reasonably possible loss or range of loss in excess of the amount accrued cannot be reasonably made.

From time to time, the Company has been, and expects to continue to be, subject to legal proceedings and claims in the ordinary course of business, including claims of alleged infringement of third-party intellectual property rights.  Such claims, even if not meritorious, could result in the expenditure of significant financial and managerial resources, divert management's attention from the Company's business objectives and adversely affect the Company's business, results of operations, financial condition and cash flows.

Contingent Consideration for Business Acquisitions

As of December 31, 2014, the Company recognized a liability of $10.7 million for estimated contingent payments related to an acquisition. In the three months ended September 30, 2015, the Company paid $18.4 million to settle this contingent liability. The cash payment related to the acquisition-date estimated fair value of $10.7 million is reported as a financing activity and the remaining cash payment of $7.7 million, which was charged to operating expense as a fair value adjustment, is included as an operating activity on the Unaudited Consolidated Statement of Cash Flows for the nine months ended September 30, 2015.

As of September 30, 2015, the Company recognized a liability of approximately $9 million for estimated contingent payments related to another acquisition. The estimated acquisition-date contingent liability is based upon the probability-weighted average payments for specific performance factors from the acquisition date through the performance period which ends at March 31, 2019. The range of undiscounted outcomes for the estimated contingent payments is approximately $0 to $90 million.

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NET INCOME PER SHARE (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Anti-dilutive Securities Excluded From Computation Of Earnings Per Share
Weighted-average number of basic common shares outstanding	50,550	52,405	51,344	52,319
Weighted-average dilutive stock options, restricted stock units and performance share units	326	272	367	308
Assumed conversion of convertible debt (in shares)	254	347	241	421
Weighted average number of diluted common and common equivalent shares outstanding (in shares)	51,130	53,024	51,952	53,048
Unvested Stock Awards Outstanding and Convertible Debt Securities [Member]
Anti-dilutive Securities Excluded From Computation Of Earnings Per Share
Anti-dilutive potential common shares	2,627	2,628	2,641	2,577
Convertible Debt [Member]
Anti-dilutive Securities Excluded From Computation Of Earnings Per Share
Anti-dilutive potential common shares	2,100		2,100

XML

STOCK-BASED EMPLOYEE COMPENSATION (Tables)

9 Months Ended

Sep. 30, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Activity of unvested restricted stock units and performance share units

Restricted Stock Units and Performance Share Units

The following table summarizes the activity of restricted stock units and performance share units ("share-based awards") during the nine months ended September 30, 2015: 

Share-Based Awards	Shares		Weighted-Average Grant Date Fair Value
Unvested at December 31, 2014	570,315			$	912.26
Granted	185,741			$	1,239.56
Vested	(153,478	)		$	742.70
Performance Share Units Adjustment	(339	)		$	1,171.04
Forfeited	(19,879	)		$	1,078.86
Unvested at September 30, 2015	582,360			$	1,058.84

Schedule of share-based compensation, stock options, activity

Stock Options

The following table summarizes the activity for the nine months ended September 30, 2015 for employee stock options: 

Employee Stock Options	Number of Shares		Weighted-Average Exercise Price			Aggregate  Intrinsic Value (in thousands)			Weighted-Average Remaining Contractual Term (in years)
Balance, December 31, 2014	146,385			$	380.05		$	111,277	6.5
Assumed in acquisitions	1,422			$	230.37
Exercised	(49,213	)		$	354.88
Forfeited	(4,103	)		$	527.59
Balance, September 30, 2015	94,491			$	384.44		$	80,546	5.8
Vested and exercisable as of September 30, 2015	69,473			$	342.20		$	62,155	5.3
Vested and exercisable as of September 30, 2015 and unvested expected to vest thereafter, net of estimated forfeitures	93,852			$	384.28		$	80,016	5.8

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UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Tax (benefit) associated with Net Investment Hedges	$ (89)	$ 18,046	$ 41,930	$ 33,391
Tax (benefit) associated with gain (loss) on marketable securities	$ (2,184)	$ (8,747)	$ (3,804)	$ (8,693)

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UNAUDITED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 17,149	$ 14,212
Common stock, par value (in dollars per share)	$ 0.008	$ 0.008
Common stock, authorized shares (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	62,026,743	61,821,097
Treasury stock, shares (in shares)	11,847,933	9,888,024

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OTHER ASSETS

9 Months Ended

Sep. 30, 2015

Other Assets, Noncurrent [Abstract]

Other Assets

OTHER ASSETS

Other assets at September 30, 2015 and December 31, 2014 consisted of the following (in thousands): 

	September 30, 2015		December 31, 2014
Deferred debt issuance costs	$	34,827	$	27,204
Security deposits	14,168		12,368
Deferred tax assets	9,912		8,548
Investments	63,926		588
Other	18,426		8,640
Total	$	141,259	$	57,348

Deferred debt issuance costs arose from (i) the $1.0 billion aggregate principal amount of 1.0% Convertible Senior Notes, due March 15, 2018, issued in March 2012; (ii) the $1.0 billion aggregate principal amount of 0.35% Convertible Senior Notes, due June 15, 2020, issued in May 2013; (iii) the $1.0 billion aggregate principal amount of 0.9% Convertible Senior Notes, due September 15, 2021, issued in August 2014; (iv) the 1.0 billion Euro aggregate principal amount of 2.375% Senior Notes, due September 23, 2024, issued in September 2014; (v) the 1.0 billion Euro aggregate principal amount of 1.8% Senior Notes, due March 3, 2027, issued in March 2015, (vi) the $500 million aggregate principal amount of 3.65% Senior Notes, due March 15, 2025, issued in March 2015, and (vii) the $2.0 billion revolving credit facility entered into in June 2015.  Included in the December 31, 2014 balance were debt issuance costs related to the $575.0 million aggregate principal amount of 1.25% Convertible Senior Notes, due March 15, 2015, issued in March 2010 and the $1.0 billion revolving credit facility entered into in October 2011. Deferred debt issuance costs are being amortized using the effective interest rate method and the period of amortization was determined at inception of the related debt agreements based upon the stated maturity dates. The termination of the revolving credit facility entered into in October 2011 resulted in a charge to interest expense of$1.0 million in June 2015 to write off the remaining unamortized debt issuance costs (see Note 8).

As of September 30, 2015, the Company held investments in equity securities of private companies of approximately $64 million, and these investments are accounted for under the cost method. As of September 30, 2015, the Company did not estimate the fair value of these cost-method investments because there were no identified events or changes in circumstances that may have a significant adverse impact on the carrying values of these investments.

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Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2015	Nov. 02, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	Priceline Group Inc.
Entity Central Index Key	0001075531
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		49,783,883

XML

DEBT

9 Months Ended

Sep. 30, 2015

Debt Disclosure [Abstract]

DEBT

DEBT

Revolving Credit Facility

In June 2015, the Company entered into a $2.0 billionfive-year unsecured revolving credit facility with a group of lenders. Borrowings under the revolving credit facility will bear interest, at the Company’s option, at a rate per annum equal to either (i) the adjusted LIBOR for the interest period in effect for such borrowing plus an applicable margin ranging from 0.875% to 1.50%; or (ii) the greatest of (a) Bank of America, N.A.'s prime lending rate, (b) the federal funds rate plus 0.50%, and (c) an adjusted LIBOR for an interest period of one month plus 1.00%, plus an applicable margin ranging from 0.00% to 0.50%. Undrawn balances available under the revolving credit facility are subject to commitment fees at the applicable rate ranging from 0.085% to 0.20%.

The revolving credit facility provides for the issuance of up to $70.0 million of letters of credit as well as borrowings of up to $50.0 million on same-day notice, referred to as swingline loans. Borrowings under the revolving credit facility may be made in U.S. Dollars, Euros, British Pounds Sterling and any other foreign currency agreed to by the lenders. The proceeds of loans made under the facility will be used for working capital and general corporate purposes, which could include acquisitions or share repurchases. As of September 30, 2015, there were no borrowings outstanding and approximately $2.5 million of letters of credit issued under this new facility. The Company paid $4.0 million in debt issuance costs related to the revolving credit facility during the nine months ended September 30, 2015.

Upon entering into this new revolving credit facility, the Company terminated its $1.0 billionfive-year revolving credit facility entered into in October 2011 and recognized interest expense of $1.0 million related to the write-off of the remaining unamortized debt issuance costs. As of December 31, 2014, there were no borrowings outstanding and approximately $4.0 million of letters of credit issued under this revolving credit facility.

Outstanding Debt

Outstanding debt as of September 30, 2015 consisted of the following (in thousands): 

September 30, 2015	Outstanding Principal  Amount		Unamortized Debt Discount			Carrying Value
Long-term debt:
1.0% Convertible Senior Notes due March 2018	$	1,000,000	$	(57,851	)	$	942,149
0.35% Convertible Senior Notes due June 2020	1,000,000		(120,355		)	879,645
0.9% Convertible Senior Notes due September 2021	1,000,000		(122,277		)	877,723
2.375% (€1 Billion) Senior Notes due September 2024	1,116,445		(9,506		)	1,106,939
3.65% Senior Notes due March 2025	500,000		(1,231		)	498,769
1.8% (€1 Billion) Senior Notes due March 2027	1,116,445		(342		)	1,116,103
Total long-term debt	$	5,732,890	$	(311,562	)	$	5,421,328

Outstanding debt as of December 31, 2014 consisted of the following (in thousands): 

December 31, 2014	Outstanding Principal  Amount		Unamortized Debt Discount			Carrying Value
Short-term debt:
1.25% Convertible Senior Notes due March 2015	$	37,524	$	(329	)	$	37,195
Long-term debt:
1.0% Convertible Senior Notes due March 2018	$	1,000,000	$	(74,834	)	$	925,166
0.35% Convertible Senior Notes due June 2020	1,000,000		(138,114		)	861,886
0.9% Convertible Senior Notes due September 2021	1,000,000		(136,299		)	863,701
2.375% (€1 Billion) Senior Notes due September 2024	1,210,068		(11,065		)	1,199,003
Total long-term debt	$	4,210,068	$	(360,312	)	$	3,849,756

The 2015 Notes (as defined below) became convertible on December 15, 2014, at the option of the holders, and remained convertible until the scheduled trading day immediately preceding the maturity date of March 15, 2015. Since these notes were convertible at the option of the holders and the principal amount is required to be paid in cash, the difference between the principal amount and the carrying value was reflected as convertible debt in the mezzanine section in the Company's Unaudited Consolidated Balance Sheet as of December 31, 2014. Therefore, with respect to the 2015 Notes, the Company reclassified the unamortized debt discount for these 1.25% Notes in the amount of $0.3 million before tax as of December 31, 2014, from additional paid-in capital to convertible debt in the mezzanine section in the Company's Unaudited Consolidated Balance Sheets.

Based upon the closing price of the Company's common stock for the prescribed measurement period during the three months ended September 30, 2015 and December 31, 2014, the respective contingent conversion thresholds of the 2018 Notes (as defined below), the 2020 Notes (as defined below) and the 2021 Notes (as defined below) were not exceeded and therefore these notes are reported as non-current liabilities in the Unaudited Consolidated Balance Sheets.

Fair Value of Debt

As of September 30, 2015 and December 31, 2014, the estimated market value of all outstanding Senior Notes was approximately $6.1 billion and $4.8 billion, respectively, and was considered a "Level 2" fair value measurement (see Note 5). Fair value was estimated based upon actual trades at the end of the reporting period or the most recent trade available as well as the Company's stock price at the end of the reporting period.  A substantial portion of the market value of the Company's debt in excess of the outstanding principal amount relates to the conversion premium on the Convertible Senior Notes.

Convertible Debt

If the note holders exercise their option to convert, the Company delivers cash to repay the principal amount of the notes and delivers shares of common stock or cash, at its option, to satisfy the conversion value in excess of the principal amount.  In cases where holders decide to convert prior to the maturity date, the Company charges the proportionate amount of remaining debt issuance costs to interest expense.

Description of Senior Convertible Notes

In August 2014, the Company issued in a private placement $1.0 billion aggregate principal amount of Convertible Senior Notes due September 15, 2021, with an interest rate of 0.9% (the "2021 Notes"). The Company paid $11.0 million in debt issuance costs during the year ended December 31, 2014, related to this offering. The 2021 Notes are convertible, subject to certain conditions, into the Company's common stock at a conversion price of approximately $2,055.50 per share. The 2021 Notes are convertible, at the option of the holder, prior to September 15, 2021, upon the occurrence of specific events, including but not limited to a change in control, or if the closing sales price of the Company's common stock for at least 20 trading days in the period of 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter is more than 150% of the applicable conversion price in effect for the notes on the last trading day of the immediately preceding quarter. In the event that all or substantially all of the Company's common stock is acquired on or prior to the maturity of the 2021 Notes in a transaction in which the consideration paid to holders of the Company's common stock consists of all or substantially all cash, the Company would be required to make additional payments in the form of additional shares of common stock to the holders of the 2021 Notes in an aggregate value ranging from $0 to approximately $375 million depending upon the date of the transaction and the then current stock price of the Company. As of June 15, 2021, holders will have the right to convert all or any portion of the 2021 Notes. The 2021 Notes may not be redeemed by the Company prior to maturity.  The holders may require the Company to repurchase the 2021 Notes for cash in certain circumstances.  Interest on the 2021 Notes is payable on March 15 and September 15 of each year.

In May 2013, the Company issued in a private placement $1.0 billion aggregate principal amount of Convertible Senior Notes due June 15, 2020, with an interest rate of 0.35% (the "2020 Notes"). The 2020 Notes were issued with an initial discount of $20.0 million. The Company paid $1.0 million in debt issuance costs during the year ended December 31, 2013, related to this offering. The 2020 Notes are convertible, subject to certain conditions, into the Company's common stock at a conversion price of approximately $1,315.10 per share. The 2020 Notes are convertible, at the option of the holder, prior to June 15, 2020, upon the occurrence of specific events, including but not limited to a change in control, or if the closing sales price of the Company's common stock for at least 20 trading days in the period of 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter is more than 150% of the applicable conversion price in effect for the notes on the last trading day of the immediately preceding quarter. In the event that all or substantially all of the Company's common stock is acquired on or prior to the maturity of the 2020 Notes in a transaction in which the consideration paid to holders of the Company's common stock consists of all or substantially all cash, the Company would be required to make additional payments in the form of additional shares of common stock to the holders of the 2020 Notes in an aggregate value ranging from $0 to approximately $397 million depending upon the date of the transaction and the then current stock price of the Company. As of March 15, 2020, holders will have the right to convert all or any portion of the 2020 Notes. The 2020 Notes may not be redeemed by the Company prior to maturity.  The holders may require the Company to repurchase the 2020 Notes for cash in certain circumstances.  Interest on the 2020 Notes is payable on June 15 and December 15 of each year.

In March 2012, the Company issued in a private placement $1.0 billion aggregate principal amount of Convertible Senior Notes due March 15, 2018, with an interest rate of 1.0% (the "2018 Notes"). The Company paid $20.9 million in debt issuance costs during the year ended December 31, 2012, related to this offering. The 2018 Notes are convertible, subject to certain conditions, into the Company's common stock at a conversion price of approximately $944.61 per share. The 2018 Notes are convertible, at the option of the holder, prior to March 15, 2018, upon the occurrence of specific events, including but not limited to a change in control, or if the closing sales price of the Company's common stock for at least 20 trading days in the period of 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter is more than 150% of the applicable conversion price in effect for the notes on the last trading day of the immediately preceding quarter. In the event that all or substantially all of the Company's common stock is acquired on or prior to the maturity of the 2018 Notes in a transaction in which the consideration paid to holders of the Company's common stock consists of all or substantially all cash, the Company would be required to make additional payments in the form of additional shares of common stock to the holders of the 2018 Notes in aggregate value ranging from $0 to approximately $344 million depending upon the date of the transaction and the then current stock price of the Company. As of December 15, 2017, holders will have the right to convert all or any portion of the 2018 Notes. The 2018 Notes may not be redeemed by the Company prior to maturity.  The holders may require the Company to repurchase the 2018 Notes for cash in certain circumstances.  Interest on the 2018 Notes is payable on March 15 and September 15 of each year.

In March 2010, the Company issued in a private placement $575.0 million aggregate principal amount of Convertible Senior Notes due March 15, 2015, with an interest rate of 1.25% (the "2015 Notes").  The 2015 Notes were convertible, subject to certain conditions, into the Company's common stock at a conversion price of approximately $303.06 per share.  For the three months ended March 31, 2015, in connection with the maturity or conversion prior to maturity of the remaining outstanding 1.25% Convertible Senior Notes, the Company paid $37.5 million to satisfy the aggregate principal amount due and paid an additional $110.1 million in satisfaction of the conversion value in excess of the principal amount, which was charged to additional paid-in capital. During the nine months ended September 30, 2014, the Company delivered cash of $121.9 million to repay the aggregate principal amount and issued 299,657 shares of its common stock in satisfaction of the conversion value in excess of the principal amount associated with 1.25% Convertible Senior Notes due March 2015 that were converted prior to maturity.

Accounting guidance requires that cash-settled convertible debt, such as the Company's Convertible Senior Notes, be separated into debt and equity components at issuance and each be assigned a value.  The value assigned to the debt component is the estimated fair value, as of the issuance date, of a similar bond without the conversion feature.  The difference between the bond cash proceeds and this estimated fair value, representing the value assigned to the equity component, is recorded as a debt discount.  Debt discount is amortized using the effective interest method over the period from the origination date through the stated maturity date.  The Company estimated the straight debt borrowing rates at debt origination to be 3.50% for the 2018 Notes, 3.13% for the 2020 Notes and 3.18% for the 2021 Notes.  The yield to maturity was estimated at an at-market coupon priced at par.

Debt discount after tax of $82.5 million ($142.9 million before tax) and financing costs associated with the equity component of convertible debt of $1.6 million after tax were recorded in additional paid-in capital related to the 2021 Notes at December 31, 2014. Debt discount after tax of $92.4 million ($154.3 million before tax) and financing costs associated with the equity component of convertible debt of $0.1 million after tax were recorded in additional paid-in capital related to the 2020 Notes at June 30, 2013. Debt discount after tax of $80.9 million ($135.2 million before tax) and financing costs associated with the equity component of convertible debt of $2.8 million after tax were recorded in additional paid-in capital related to the 2018 Notes at March 31, 2012. Debt discount after tax of $69.1 million ($115.2 million before tax) and financing costs associated with the equity component of convertible debt of $1.6 million after tax were recorded in additional paid-in-capital related to the 2015 Notes at March 31, 2010.

For the three months ended September 30, 2015 and 2014, the Company recognized interest expense of $23.1 million and $20.4 million, respectively, related to convertible notes.  Interest expense related to convertible notes for the three months ended September 30, 2015 and 2014 was comprised of $5.6 million and $4.6 million, respectively, for the contractual coupon interest, $16.4 million and $14.8 million, respectively, related to the amortization of debt discount, and $1.1 million and $1.0 million, respectively, related to the amortization of debt issuance costs.  For the three months ended September 30, 2015 and 2014, included in the amortization of debt discount mentioned above was $0.7 million of original issuance discount for each period related to the 2020 Notes. The remaining period for amortization of debt discount and debt issuance costs is the stated maturity dates for the respective debt. The weighted-average effective interest rate for the three months ended September 30, 2015 and 2014 was 3.4% and 3.6%, respectively, related to convertible notes.

For the nine months ended September 30, 2015 and 2014, the Company recognized interest expense of $69.4 million and $53.9 million, respectively, related to convertible notes.  Interest expense related to convertible notes for the nine months ended September 30, 2015 and 2014 was comprised of $17.0 million and $11.6 million, respectively, for the contractual coupon interest, $49.1 million and $39.1 million, respectively, related to the amortization of debt discount, and $3.3 million and $3.2 million, respectively, for each period related to the amortization of debt issuance costs.  For the nine months ended September 30, 2015 and 2014, included in the amortization of debt discount mentioned above was $2.0 million of original issuance discount for each period related to the 2020 Notes. In addition, the Company incurred interest expense of $0.5 million related to debt conversions during the nine months ended September 30, 2014. The remaining period for amortization of debt discount and debt issuance costs is the stated maturity dates for the respective debt. The weighted-average effective interest rate for the nine months ended September 30, 2015 and 2014 was 3.4% and 3.6%, respectively, related to convertible notes.

In addition, if the Company's convertible debt is redeemed or converted prior to maturity, a gain or loss on extinguishment is recognized.  The gain or loss is the difference between the fair value of the debt component immediately prior to extinguishment and its carrying value.  To estimate the fair value of the debt at the conversion date, the Company estimated its straight debt borrowing rate, considering its credit rating and straight debt of comparable corporate issuers.  For the three and nine months ended September 30, 2014, the Company recognized a non-cash loss of $0.2 million ($0.1 million after tax) and $6.3 million ($3.8 million after tax), respectively, in "Foreign currency transactions and other" in the Unaudited Consolidated Statements of Operations in connection with the conversion of the 2015 Notes.

Other Long-term Debt

In March 2015, the Company issued Senior Notes due March 15, 2025, with an interest rate of 3.65% (the "2025 Notes") for an aggregate principal amount of $500 million. The 2025 Notes were issued with an initial discount of $1.3 million. In addition, the Company paid $3.2 million in debt issuance costs during the nine months ended September 30, 2015. Interest on the 2025 Notes is payable semi-annually on March 15 and September 15, beginning September 15, 2015.

In March 2015, the Company issued Senior Notes due March 3, 2027, with an interest rate of 1.8% (the "2027 Notes") for an aggregate principal amount of 1.0 billion Euros. The 2027 Notes were issued with an initial discount of 0.3 million Euros. In addition, the Company paid $6.3 million in debt issuance costs during the nine months ended September 30, 2015. Interest on the 2027 Notes is payable annually on March 3, beginning March 3, 2016. Subject to certain limited exceptions, all payments of interest and principal for the 2027 Notes will be made in Euros.

In September 2014, the Company issued Senior Notes due September 23, 2024, with an interest rate of 2.375% (the "2024 Notes") for an aggregate principal amount of 1.0 billion Euros. The 2024 Notes were issued with an initial discount of 9.4 million Euros. In addition, the Company paid $6.5 million in debt issuance costs during the year ended December 31, 2014. Interest on the 2024 Notes is payable annually on September 23, beginning September 23, 2015. Subject to certain limited exceptions, all payments of interest and principal for the 2024 Notes will be made in Euros.

The aggregate principal value of the 2024 Notes and 2027 Notes and accrued interest thereon are designated as a hedge of the Company's net investment in certain Euro functional currency subsidiaries. The foreign currency transaction gains or losses on these liabilities are measured based upon changes in spot rates and are recorded in "Accumulated other comprehensive loss." The Euro-denominated net assets of these subsidiaries are translated into U.S. Dollars at each balance sheet date, with effects of foreign currency changes also reported in "Accumulated other comprehensive loss." Since the notional amount of the recorded Euro-denominated debt and related interest are not greater than the notional amount of the Company's net investment, the Company does not expect to incur any ineffectiveness on this hedge.

Debt discount is amortized using the effective interest method over the period from the origination date through the stated maturity date.  The Company estimated the effective interest rates at debt origination to be 2.48% for the 2024 Notes, 1.80% for the 2027 Notes and 3.68% for the 2025 Notes.

For the three and nine months ended September 30, 2015, the Company recognized interest expense of $16.8 million and $43.0 million, respectively, related to other long-term debt which was comprised of $16.2 million and $41.3 million, respectively, for the contractual coupon interest, $0.2 million and $0.7 million, respectively, related to the amortization of debt discount and $0.4 million and $1.0 million, respectively, related to the amortization of debt issuance costs. The remaining period for amortization of debt discount and debt issuance costs is the stated maturity date for the debt.

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UNAUDITED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Agency revenues	$ 2,345,673	$ 2,099,629	$ 5,127,174	$ 4,615,169
Merchant revenues	596,503	613,535	1,637,191	1,707,786
Advertising and other revenues	160,725	123,333	459,627	278,919
Total revenues	3,102,901	2,836,497	7,223,992	6,601,874
Cost of revenues	155,619	216,519	511,568	692,429
Gross profit	2,947,282	2,619,978	6,712,424	5,909,445
Operating expenses:
Advertising — Online	801,147	699,814	2,215,181	1,860,317
Advertising — Offline	51,440	71,593	181,325	183,093
Sales and marketing	93,069	86,092	269,536	225,456
Personnel, including stock-based compensation of $58,274, $46,136, $172,446 and $120,108, respectively	305,329	259,471	853,469	675,854
General and administrative	109,706	97,902	308,829	261,950
Information technology	28,830	24,802	81,347	72,068
Depreciation and amortization	69,054	57,599	201,730	136,262
Total operating expenses	1,458,575	1,297,273	4,111,417	3,415,000
Operating income	1,488,707	1,322,705	2,601,007	2,494,445
Other income (expense):
Interest income	14,682	2,490	39,315	5,165
Interest expense	(41,436)	(22,953)	(116,462)	(57,804)
Foreign currency transactions and other	(5,783)	3,347	(12,070)	(4,399)
Total other income (expense)	(32,537)	(17,116)	(89,217)	(57,038)
Earnings before income taxes	1,456,170	1,305,589	2,511,790	2,437,407
Income tax expense	259,438	243,336	464,699	467,485
Net income	$ 1,196,732	$ 1,062,253	$ 2,047,091	$ 1,969,922
Net income applicable to common stockholders per basic common share	$ 23.67	$ 20.27	$ 39.87	$ 37.65
Weighted-average number of basic common shares outstanding	50,550	52,405	51,344	52,319
Net income applicable to common stockholders per diluted common share	$ 23.41	$ 20.03	$ 39.40	$ 37.13
Weighted-average number of diluted common shares outstanding	51,130	53,024	51,952	53,048

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STOCK-BASED EMPLOYEE COMPENSATION

9 Months Ended

Sep. 30, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

STOCK-BASED EMPLOYEE COMPENSATION

STOCK-BASED EMPLOYEE COMPENSATION

Stock-based compensation expense included in personnel expenses in the Unaudited Consolidated Statements of Operations was approximately $58.3 million and $46.1 million for the three months ended September 30, 2015 and 2014, respectively, and $172.4 million and $120.1 million for the nine months ended September 30, 2015 and 2014, respectively.

Stock-based compensation is recognized in the financial statements based upon fair value. Fair value is recognized as expense on a straight-line basis, net of estimated forfeitures, over the employee's requisite service period. The fair value of performance share units and restricted stock units is determined based on the number of units granted and the quoted price of the Company's common stock as of the grant date. Stock-based compensation related to performance share units reflects the estimated probable outcome at the end of the performance period. The fair value of employee stock options assumed in acquisitions was determined using the Black-Scholes model and the market value of the Company's common stock at the respective acquisition date.

Restricted Stock Units and Performance Share Units

The following table summarizes the activity of restricted stock units and performance share units ("share-based awards") during the nine months ended September 30, 2015: 

Share-Based Awards	Shares		Weighted-Average Grant Date Fair Value
Unvested at December 31, 2014	570,315			$	912.26
Granted	185,741			$	1,239.56
Vested	(153,478	)		$	742.70
Performance Share Units Adjustment	(339	)		$	1,171.04
Forfeited	(19,879	)		$	1,078.86
Unvested at September 30, 2015	582,360			$	1,058.84

As of September 30, 2015, there was $327.6 million of total future compensation cost related to unvested share-based awards to be recognized over a weighted-average period of 2.0 years.

During the nine months ended September 30, 2015, the Company made broad-based grants of 78,418 restricted stock units that generally vest after three years, subject to certain exceptions for terminations other than for "cause," for "good reason" or on account of death or disability. These share-based awards had a total grant date fair value of $97.4 million based on a weighted-average grant date fair value per share of $1,242.70.

In addition, during the nine months ended September 30, 2015, the Company granted 107,323 performance share units to executives and certain other employees.  The performance share units had a total grant date fair value of $132.8 million based upon a weighted-average grant date fair value per share of $1,237.28.  The performance share units are payable in shares of the Company's common stock upon vesting. Subject to certain exceptions for terminations other than for "cause," for "good reason" or on account of death or disability, recipients of these performance share units generally must continue their service through the requisite service period in order to receive any shares.  Stock-based compensation related to performance share units reflects the estimated probable outcome at the end of the performance period.  The actual number of shares to be issued on the vesting date will be determined upon completion of the performance period, which, for most of these performance share units, ends December 31, 2017, assuming there is no accelerated vesting for, among other things, a termination of employment under certain circumstances.  As of September 30, 2015, the estimated number of probable shares to be issued is a total of 105,982 shares.  If the maximum performance thresholds are met at the end of the performance period, a maximum number of 257,727 total shares could be issued.  If the minimum performance thresholds are not met, 52,368 shares would be issued at the end of the performance period.

2014 Performance Share Units

During the year ended December 31, 2014, the Company granted 72,277 performance share units with a grant date fair value of $96.1 million, based on a weighted-average grant date fair value per share of $1,329.11. The actual number of shares to be issued will be determined upon completion of the performance period which generally ends December 31, 2016.

At September 30, 2015, there were 69,767 unvested 2014 performance share units outstanding, net of performance share units that were forfeited or vested since the grant date. As of September 30, 2015, the number of shares estimated to be issued pursuant to these performance share units at the end of the performance period is a total of 109,124 shares. If the maximum thresholds are met at the end of the performance period, a maximum of 141,062 total shares could be issued pursuant to these performance share units. If the minimum performance thresholds are not met, 48,810 shares would be issued at the end of the performance period.

2013 Performance Share Units

During the year ended December 31, 2013, the Company granted 104,865 performance share units with a grant date fair value of $74.4 million, based on a weighted-average grant date fair value per share of $709.74.  The actual number of shares to be issued will be determined upon completion of the performance period which ends December 31, 2015.

At September 30, 2015, there were 98,677 unvested 2013 performance share units outstanding, net of performance share units that were forfeited or vested since the grant date.  As of September 30, 2015, the number of shares estimated to be issued pursuant to these performance share units at the end of the performance period is a total of 185,318 shares.  If the maximum performance thresholds are met at the end of the performance period, a maximum of 214,397 total shares could be issued pursuant to these performance share units. If the minimum performance thresholds are not met, 38,508 shares would be issued at the end of the performance period.

Stock Options

The following table summarizes the activity for the nine months ended September 30, 2015 for employee stock options: 

Employee Stock Options	Number of Shares		Weighted-Average Exercise Price			Aggregate  Intrinsic Value (in thousands)			Weighted-Average Remaining Contractual Term (in years)
Balance, December 31, 2014	146,385			$	380.05		$	111,277	6.5
Assumed in acquisitions	1,422			$	230.37
Exercised	(49,213	)		$	354.88
Forfeited	(4,103	)		$	527.59
Balance, September 30, 2015	94,491			$	384.44		$	80,546	5.8
Vested and exercisable as of September 30, 2015	69,473			$	342.20		$	62,155	5.3
Vested and exercisable as of September 30, 2015 and unvested expected to vest thereafter, net of estimated forfeitures	93,852			$	384.28		$	80,016	5.8

The aggregate intrinsic value of employee stock options exercised during the nine months ended September 30, 2015 was $42.8 million compared to $43.7 million for the nine months ended September 30, 2014. During the nine months ended September 30, 2015, stock options assumed in acquisitions vested for 29,527 shares of common stock with an acquisition-date fair value of $19.9 million, compared to 26,765 shares of common stock vested for stock options assumed in acquisitions with an acquisition-date fair value of $13.5 million for the nine months ended September 30, 2014.

For the three and nine months ended September 30, 2015, the Company recorded stock-based compensation expense related to employee stock options of $4.8 million and $19.8 million, respectively, compared to $8.1 million and $14.9 million for the three and nine months ended September 30, 2014, respectively. Employee stock options assumed in acquisitions during the nine months ended September 30, 2015 had a total acquisition-date fair value of $1.4 million based on a weighted-average acquisition date fair value of $1,015.81 per share. As of September 30, 2015, there was $15.1 million of total future compensation costs related to unvested employee stock options to be recognized over a weighted-average period of 1.3 years.

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BASIS OF PRESENTATION

9 Months Ended

Sep. 30, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

BASIS OF PRESENTATION

BASIS OF PRESENTATION

Management of The Priceline Group Inc. (the "Company") is responsible for the Unaudited Consolidated Financial Statements included in this document.  The Unaudited Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") and include all normal and recurring adjustments that management of the Company considers necessary for a fair presentation of its financial position and operating results.  The Company prepared the Unaudited Consolidated Financial Statements following the requirements of the Securities and Exchange Commission for interim reporting.  As permitted under those rules, the Company condensed or omitted certain footnotes or other financial information that are normally required by GAAP for annual financial statements.  These statements should be read in combination with the Consolidated Financial Statements in the Company's Annual Report on Form 10-K for the year ended December 31, 2014.

The Unaudited Consolidated Financial Statements include the accounts of the Company and its wholly-owned subsidiaries, including its primary brands of Booking.com, priceline.com, KAYAK, agoda.com, rentalcars.com and, since its acquisition on July 24, 2014, OpenTable, Inc. ("OpenTable"). All inter-company accounts and transactions have been eliminated in consolidation.  The functional currency of the Company's foreign subsidiaries is generally the respective local currency. Assets and liabilities are translated into U.S. Dollars at the rate of exchange existing at the balance sheet date.  Income statement amounts are translated at the average exchange rates for the period.  Translation gains and losses are included as a component of "Accumulated other comprehensive loss" in the accompanying Unaudited Consolidated Balance Sheets.  Foreign currency transaction gains and losses are included in the Unaudited Consolidated Statements of Operations in "Foreign currency transactions and other."

Revenues, expenses, assets and liabilities can vary during each quarter of the year.  Therefore, the results and trends in these interim financial statements may not be the same as those for the full year.

Recent Accounting Pronouncements

In September 2015, the Financial Accounting Standard (“FASB”) issued a new accounting update which simplifies the accounting for measurement-period adjustments to provisional amounts recognized in a business combination. Under this new guidance, an acquirer must recognize these adjustments in the reporting period in which the adjustment amounts are determined. The new accounting guidance also requires an acquirer to present separately on the face of the income statement, or disclose in the notes, the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to provision amounts had been recognized as of the acquisition date. This update is effective for fiscal years beginning after December 15, 2015, including interim periods within those fiscal years. Early adoption is permitted for financial statements that have not been issued. The Company plans to adopt this new accounting standard in the fourth quarter of 2015.

In April 2015, the FASB issued a new accounting update which changes the presentation of debt issuance costs in our financial statements. Under this new guidance, debt issuance costs, excluding costs associated with a revolving credit facility, will be presented in our balance sheets as a direct deduction from the related debt liability rather than as an asset. Unamortized debt issuance costs at September 30, 2015 were $31.1 million. This accounting change is consistent with the current presentation under U.S. GAAP for debt discounts and it also converges the guidance under U.S. GAAP with that in the International Financial Reporting Standards ("IFRS"). Debt issuance costs will reduce the proceeds from debt borrowings in our cash flow statement instead of being presented as a separate caption in the financing section of that statement. Amortization of debt issuance costs will continue to be reported as interest expense in our income statements. This accounting update does not affect the current accounting guidance for the recognition and measurement of debt issuance costs. This update is effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is allowed for all entities for financial statements that have not been previously issued. The Company plans to adopt this new accounting standard in the fourth quarter of 2015.

In April 2015, the FASB issued a new accounting update which requires an entity that enters into a cloud computing arrangement to determine if the arrangement contains a software license. The accounting update cites software as a service, platform as a service, infrastructure as a service and other similar hosting arrangements as examples of cloud computing arrangements. A software license arrangement exists if both of the following criteria are met: (1) the customer has a contractual right to take possession of the underlying software without significant penalty and (2) it is feasible for the customer to run the software on their own hardware or to contract with another party unrelated to the vendor to run the software. If the arrangement meets both of these criteria, the customer would need to identify what portion of the cost relates to purchasing the software and what portion relates to paying for the service of hosting the software. The purchased software would be accounted for using the internal-use software guidance and the service costs would be accounted for as an operating expense. If the arrangement does not meet both of the criteria, the cost is an operating expense for a service contract. The guidance in this update does not change the accounting for a service contract. The update is effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is allowed for all entities. The Company is currently evaluating the impact on its consolidated financial statements of adopting this new guidance.

In May 2014, the FASB and the International Accounting Standards Board ("IASB") issued a new accounting standard on the recognition of revenue from contracts with customers that is designed to create greater comparability for financial statement users across industries and jurisdictions. The core principle of the standard is that an "entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services." Additionally, the new guidance specified the accounting for some costs to obtain or fulfill a contract with a customer. The new standard will also require enhanced disclosures. The accounting standard is effective for public entities for annual and interim periods beginning after December 15, 2016. In July 2015, the FASB agreed to defer the effective date of the new revenue standard to annual periods beginning after December 15, 2017 with early adoption permitted as of the original effective date. The Company is currently evaluating the impact on its consolidated financial statements of adopting this new guidance.

In April 2014, the FASB issued an accounting update which amended the definition of a discontinued operation. The new definition limits discontinued operations reporting to disposals of components of an entity that represent strategic shifts that have or will have a major effect on an entity's operations and financial results. The new definition includes an acquired business that is classified as held for sale at the date of acquisition. The accounting update requires new disclosures of both discontinued operations and a disposal of an individually significant component of an entity. The accounting update is effective for annual and interim periods beginning on or after December 15, 2014. The Company adopted this update in the first quarter of 2015 and this accounting update did not have an impact on the Company's consolidated financial statements.

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BASIS OF PRESENTATION (Policies)

9 Months Ended

Sep. 30, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Recent Accounting Pronouncements

Recent Accounting Pronouncements

In September 2015, the Financial Accounting Standard (“FASB”) issued a new accounting update which simplifies the accounting for measurement-period adjustments to provisional amounts recognized in a business combination. Under this new guidance, an acquirer must recognize these adjustments in the reporting period in which the adjustment amounts are determined. The new accounting guidance also requires an acquirer to present separately on the face of the income statement, or disclose in the notes, the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to provision amounts had been recognized as of the acquisition date. This update is effective for fiscal years beginning after December 15, 2015, including interim periods within those fiscal years. Early adoption is permitted for financial statements that have not been issued. The Company plans to adopt this new accounting standard in the fourth quarter of 2015.

In April 2015, the FASB issued a new accounting update which changes the presentation of debt issuance costs in our financial statements. Under this new guidance, debt issuance costs, excluding costs associated with a revolving credit facility, will be presented in our balance sheets as a direct deduction from the related debt liability rather than as an asset. Unamortized debt issuance costs at September 30, 2015 were $31.1 million. This accounting change is consistent with the current presentation under U.S. GAAP for debt discounts and it also converges the guidance under U.S. GAAP with that in the International Financial Reporting Standards ("IFRS"). Debt issuance costs will reduce the proceeds from debt borrowings in our cash flow statement instead of being presented as a separate caption in the financing section of that statement. Amortization of debt issuance costs will continue to be reported as interest expense in our income statements. This accounting update does not affect the current accounting guidance for the recognition and measurement of debt issuance costs. This update is effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is allowed for all entities for financial statements that have not been previously issued. The Company plans to adopt this new accounting standard in the fourth quarter of 2015.

In April 2015, the FASB issued a new accounting update which requires an entity that enters into a cloud computing arrangement to determine if the arrangement contains a software license. The accounting update cites software as a service, platform as a service, infrastructure as a service and other similar hosting arrangements as examples of cloud computing arrangements. A software license arrangement exists if both of the following criteria are met: (1) the customer has a contractual right to take possession of the underlying software without significant penalty and (2) it is feasible for the customer to run the software on their own hardware or to contract with another party unrelated to the vendor to run the software. If the arrangement meets both of these criteria, the customer would need to identify what portion of the cost relates to purchasing the software and what portion relates to paying for the service of hosting the software. The purchased software would be accounted for using the internal-use software guidance and the service costs would be accounted for as an operating expense. If the arrangement does not meet both of the criteria, the cost is an operating expense for a service contract. The guidance in this update does not change the accounting for a service contract. The update is effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is allowed for all entities. The Company is currently evaluating the impact on its consolidated financial statements of adopting this new guidance.

In May 2014, the FASB and the International Accounting Standards Board ("IASB") issued a new accounting standard on the recognition of revenue from contracts with customers that is designed to create greater comparability for financial statement users across industries and jurisdictions. The core principle of the standard is that an "entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services." Additionally, the new guidance specified the accounting for some costs to obtain or fulfill a contract with a customer. The new standard will also require enhanced disclosures. The accounting standard is effective for public entities for annual and interim periods beginning after December 15, 2016. In July 2015, the FASB agreed to defer the effective date of the new revenue standard to annual periods beginning after December 15, 2017 with early adoption permitted as of the original effective date. The Company is currently evaluating the impact on its consolidated financial statements of adopting this new guidance.

In April 2014, the FASB issued an accounting update which amended the definition of a discontinued operation. The new definition limits discontinued operations reporting to disposals of components of an entity that represent strategic shifts that have or will have a major effect on an entity's operations and financial results. The new definition includes an acquired business that is classified as held for sale at the date of acquisition. The accounting update requires new disclosures of both discontinued operations and a disposal of an individually significant component of an entity. The accounting update is effective for annual and interim periods beginning on or after December 15, 2014. The Company adopted this update in the first quarter of 2015 and this accounting update did not have an impact on the Company's consolidated financial statements.

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TREASURY STOCK

9 Months Ended

Sep. 30, 2015

Equity [Abstract]

TREASURY STOCK

TREASURY STOCK

In the first quarter of 2015, the Company's Board of Directors authorized the repurchase of up to $3.0 billion of the Company's common stock, in addition to amounts previously authorized. In the nine months ended September 30, 2015, the Company repurchased 1,897,446 shares of its common stock in the open market for an aggregate cost of $2.3 billion, which included stock repurchases in September 2015 of 57,241 shares for an aggregate cost of $68.4 million that were settled in October 2015. As a result, the Unaudited Consolidated Balance Sheet at September 30, 2015 includes $68.4 million in "Accrued expenses and other current liabilities" for these unsettled stock repurchases. The Unaudited Consolidated Statement of Cash Flows for the nine months ended September 30, 2015 excludes the impact of these stock repurchases settled in October 2015.

As of September 30, 2015, the Company had a remaining authorization of $748.8 million to purchase its common stock. During the period from October 1, 2015 through October 30, 2015, the Company repurchased 397,038 additional shares for an aggregate cost of $519.6 million. The Company may make additional repurchases of shares under its stock repurchase programs, depending on prevailing market conditions, alternate uses of capital and other factors. Whether and when to initiate and/or complete any purchase of common stock and the amount of common stock purchased will be determined at the Company's discretion.

The Board of Directors has given the Company the general authorization to repurchase shares of its common stock to satisfy employee withholding tax obligations related to stock-based compensation.  The Company repurchased 62,463 shares and 73,502 shares at aggregate costs of $77.4 million and $98.2 million in the nine months ended September 30, 2015 and 2014, respectively, to satisfy employee withholding taxes related to stock-based compensation.

As of September 30, 2015, there were approximately 11.8 million shares of the Company's common stock held in treasury.

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FAIR VALUE MEASUREMENTS

9 Months Ended

Sep. 30, 2015

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS

Financial assets and liabilities carried at fair value as of September 30, 2015 are classified in the tables below in the categories described below (in thousands): 

	Level 1		Level 2		Total
ASSETS:
Cash equivalents:
U.S. Treasury money market funds	$	76,282	$	—	$	76,282
Foreign government securities	—		298,375		298,375
U.S. government securities	—		525,381		525,381
Commercial paper	—		20,910		20,910
Short-term investments:
Foreign government securities	—		71,832		71,832
U.S. government securities	—		638,394		638,394
Corporate debt securities	—		497,227		497,227
Commercial paper	—		1,716		1,716
U.S. government agency securities	—		2,015		2,015
Foreign exchange derivatives	—		358		358
Long-term investments:
Foreign government securities	—		485,974		485,974
U.S. government securities	—		778,214		778,214
Corporate debt securities	—		3,740,227		3,740,227
U.S. municipal securities	—		1,095		1,095
Ctrip convertible debt securities	—		699,475		699,475
Ctrip equity securities	622,645		—		622,645
Total assets at fair value	$	698,927	$	7,761,193	$	8,460,120

	Level 1		Level 2		Total
LIABILITIES:
Foreign exchange derivatives	$	—	$	317	$	317

Financial assets and liabilities carried at fair value as of December 31, 2014 are classified in the tables below in the categories described below (in thousands):

	Level 1		Level 2		Total
ASSETS:
Cash equivalents:
U.S. Treasury money market funds	$	155,608	$	—	$	155,608
Foreign government securities	—		974,855		974,855
U.S. government securities	—		676,503		676,503
Corporate debt securities	—		45,340		45,340
Commercial paper	—		382,544		382,544
U.S. government agency securities	—		10,000		10,000
Short-term investments:
Foreign government securities	—		52,490		52,490
U.S. government securities	—		364,266		364,266
Corporate debt securities	—		581,523		581,523
Commercial paper	—		39,092		39,092
U.S. government agency securities	—		104,811		104,811
Foreign exchange derivatives	—		336		336
Long-term investments:
Foreign government securities	—		12,671		12,671
U.S. government securities	—		556,448		556,448
Corporate debt securities	—		2,329,033		2,329,033
U.S. government agency securities	—		95,094		95,094
U.S. municipal securities	—		1,102		1,102
Ctrip convertible debt securities	—		425,961		425,961
Ctrip equity securities	335,344		—		335,344
Total assets at fair value	$	490,952	$	6,652,069	$	7,143,021

	Level 1		Level 2		Total
LIABILITIES:
Foreign exchange derivatives	$	—	$	129	$	129

There are three levels of inputs to measure fair value.  The definition of each input is described below:

Level 1: Quoted prices in active markets that are accessible by the Company at the measurement date for

identical assets and liabilities.

Level 2: Inputs that are observable, either directly or indirectly.  Such prices may be based upon quoted

prices for identical or comparable securities in active markets or inputs not quoted on active

markets, but corroborated by market data.

Level 3: Unobservable inputs are used when little or no market data is available.

Investments in corporate debt securities, U.S. and foreign government securities, commercial paper, government agency securities, convertible debt securities and municipal securities are considered "Level 2" valuations because the Company has access to quoted prices, but does not have visibility to the volume and frequency of trading for all of these investments.  For the Company's investments, a market approach is used for recurring fair value measurements and the valuation techniques use inputs that are observable, or can be corroborated by observable data, in an active marketplace. 

The Company's derivative instruments are valued using pricing models.  Pricing models take into account the contract terms as well as multiple inputs where applicable, such as interest rate yield curves, option volatility and currency rates. Derivatives are considered "Level 2" fair value measurements. The Company's derivative instruments are typically short term in nature.

As of September 30, 2015 and December 31, 2014, the Company's cash consisted of bank deposits and cash held in investment accounts.  Other financial assets and liabilities, including restricted cash, accounts receivable, accounts payable, accrued expenses and deferred merchant bookings are carried at cost which approximates their fair value because of the short-term nature of these items.  As of September 30, 2015, the Company held investments in equity securities of private companies of approximately $64 million and these investments are accounted for under the cost method (see Note 7). See Note 4 for information on the carrying value of investments and Note 8 for the estimated fair value of the Company's outstanding Senior Notes. See Note 12 for the Company's contingent liabilities associated with business acquisitions.

In the normal course of business, the Company is exposed to the impact of foreign currency fluctuations.  The Company limits these risks by following established risk management policies and procedures, including the use of derivatives.  The Company does not use derivatives for trading or speculative purposes.  All derivative instruments are recognized in the Unaudited Consolidated Balance Sheets at fair value.  Gains and losses resulting from changes in the fair value of derivative instruments that are not designated as hedging instruments for accounting purposes are recognized in the Unaudited Consolidated Statements of Operations in the period that the changes occur.  Changes in the fair value of derivatives designated as net investment hedges are recorded as currency translation adjustments to offset a portion of the translation adjustment from Euro-denominated net assets held by certain subsidiaries and are recognized in the Unaudited Consolidated Balance Sheets in "Accumulated other comprehensive loss."

Derivatives Not Designated as Hedging Instruments — The Company is exposed to adverse movements in currency exchange rates as the operating results of its international operations are translated from local currency into U.S. Dollars upon consolidation.  The Company's derivative contracts principally address short-term foreign exchange fluctuations for the Euro and British Pound Sterling versus the U.S. Dollar.  As of September 30, 2015 and December 31, 2014, there were no outstanding derivative contracts related to foreign currency translation risk.  Foreign exchange losses of $6.4 million and $6.2 million for the three and nine months ended September 30, 2015, respectively, compared to foreign exchange gains of $8.3 million and $12.5 million for the three and nine months ended September 30, 2014, respectively, are recorded in "Foreign currency transactions and other" in the Unaudited Consolidated Statements of Operations.

The Company also enters into foreign currency forward contracts to hedge its exposure to the impact of movements in currency exchange rates on its transactional balances denominated in currencies other than the functional currency. Foreign exchange derivatives outstanding as of September 30, 2015 associated with foreign currency transaction risks resulted in a net asset of $0.1 million, with an asset in the amount of $0.4 million recorded in "Prepaid expenses and other current assets" and a liability in the amount of $0.3 million recorded in "Accrued expenses and other current liabilities" in the Unaudited Consolidated Balance Sheet. Foreign exchange derivatives outstanding as of December 31, 2014 associated with foreign exchange transactions resulted in a net asset of $0.2 million, with an asset in the amount of $0.3 million recorded in "Prepaid expenses and other current assets" and a liability in the amount of $0.1 million recorded in "Accrued expenses and other current liabilities" in the Unaudited Consolidated Balance Sheet.  Derivatives associated with these transaction risks resulted in foreign exchange gains of $13.4 million and foreign exchange losses of $12.6 million for the three and nine months ended September 30, 2015, respectively, compared to foreign exchange losses of $15.0 million and $19.0 million for the three and nine months ended September 30, 2014, respectively. These mark-to-market adjustments on the derivative contracts, offset by the effect of changes in currency exchange rates on transactions denominated in currencies other than the functional currency, resulted in net gains of $3.4 million and net losses of $4.2 million for the three months ended September 30, 2015 and 2014, respectively, and net losses of $2.9 million and $7.6 million for the nine months ended September 30, 2015 and 2014, respectively. The net impacts related to these derivatives are recorded in "Foreign currency transactions and other" in the Unaudited Consolidated Statements of Operations.

The settlement of derivative contracts not designated as hedging instruments resulted in net cash outflows of $20.1 million and $10.0 million for the nine months ended September 30, 2015 and 2014, respectively, and are reported within "Net cash provided by operating activities" in the Unaudited Consolidated Statements of Cash Flows.

Derivatives Designated as Hedging Instruments — The Company had no foreign currency forward contracts designated as hedges of its net investment in a foreign subsidiary outstanding as of September 30, 2015 or December 31, 2014. A net cash inflow of $5.2 million for the nine months ended September 30, 2015 compared to a net cash outflow of $80.3 million for the nine months ended September 30, 2014 related to foreign currency forward contracts designated as hedges of the Company's net investment in a foreign subsidiary are reported within "Net cash used in investing activities" in the Unaudited Consolidated Statements of Cash Flows.

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NET INCOME PER SHARE

9 Months Ended

Sep. 30, 2015

Earnings Per Share [Abstract]

NET INCOME PER SHARE

NET INCOME PER SHARE

The Company computes basic net income per share by dividing net income by the weighted-average number of common shares outstanding during the period.  Diluted net income per share is based upon the weighted-average number of common and common equivalent shares outstanding during the period.

Common equivalent shares related to stock options, restricted stock units and performance share units are calculated using the treasury stock method.  Performance share units are included in the weighted-average common equivalent shares based on the number of shares that would be issued if the end of the reporting period were the end of the performance period, if the result would be dilutive.

The Company's convertible notes have net share settlement features requiring the Company upon conversion to settle the principal amount of the debt for cash and the conversion premium for cash or shares of the Company's common stock, at the Company's option.  The convertible notes are included in the calculation of diluted net income per share if their inclusion is dilutive under the treasury stock method.

A reconciliation of the weighted-average number of shares outstanding used in calculating diluted earnings per share is as follows (in thousands): 

	Three Months Ended September 30,		Nine Months Ended September 30,
	2015	2014	2015	2014
Weighted-average number of basic common shares outstanding	50,550	52,405	51,344	52,319
Weighted-average dilutive stock options, restricted stock units and performance share units	326	272	367	308
Assumed conversion of Convertible Senior Notes	254	347	241	421
Weighted-average number of diluted common and common equivalent shares outstanding	51,130	53,024	51,952	53,048
Anti-dilutive potential common shares	2,627	2,628	2,641	2,577

Anti-dilutive potential common shares for both the three and nine months ended September 30, 2015 include approximately 2.1 million shares that could be issued under the Company's outstanding convertible notes.  Under the treasury stock method, the convertible notes will generally have an anti-dilutive impact on net income per share if the conversion price for the convertible notes exceed the Company's average stock price.

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INVESTMENTS

9 Months Ended

Sep. 30, 2015

Investments, Debt and Equity Securities [Abstract]

INVESTMENTS

INVESTMENTS

The following table summarizes, by major security type, the Company's investments as of September 30, 2015 (in thousands): 

	Cost		Gross  Unrealized  Gains		Gross  Unrealized Losses			Fair Value
Available-for-sale securities:
Short-term investments:
Foreign government securities	$	71,834	$	2	$	(4	)	$	71,832
U.S. government securities	638,131		263		—			638,394
Corporate debt securities	497,498		134		(405		)	497,227
Commercial paper	1,716		—		—			1,716
U.S. government agency securities	2,012		3		—			2,015
Total short-term investments	$	1,211,191	$	402	$	(409	)	$	1,211,184
Long-term investments:
Foreign government securities	$	485,783	$	381	$	(190	)	$	485,974
U.S. government securities	773,651		4,563		—			778,214
Corporate debt securities	3,749,053		6,175		(15,001		)	3,740,227
U.S. municipal securities	1,089		6		—			1,095
Ctrip convertible debt securities	750,000		—		(50,525		)	699,475
Ctrip equity securities	584,099		38,546		—			622,645
Total long-term investments	$	6,343,675	$	49,671	$	(65,716	)	$	6,327,630

The Company's investment policy seeks to preserve capital and maintain sufficient liquidity to meet operational and other needs of the business.  As of September 30, 2015, the weighted-average life of the Company’s fixed income investment portfolio, excluding the Company's investment in Ctrip convertible debt securities, was approximately 1.6 years with an average credit quality of A1/A+.

The Company invests in foreign government securities with high credit quality. As of September 30, 2015, investments in foreign government securities principally included debt securities issued by the governments of the Netherlands, France, Belgium, Austria and Sweden. 

On May 26, 2015 and August 7, 2014, the Company invested $250 million and $500 million, respectively, in five-year senior convertible notes issued at par by Ctrip.com International Ltd. ("Ctrip"). Additionally, as of September 30, 2015, the Company had invested $584.1 million of its international cash, which includes $22.1 million settled in October 2015, in Ctrip American Depositary Shares ("ADSs"). As a result, the Unaudited Consolidated Balance Sheet at September 30, 2015 includes $22.1 million in "Accrued expenses and other current liabilities" for these unsettled ADS purchases. The convertible debt and equity securities of Ctrip have been marked-to-market in accordance with the accounting guidance for available-for-sale securities and at September 30, 2015 show an unrealized loss of $50.5 million and an unrealized gain of $38.5 million, respectively. In connection with the purchase of the convertible note in August 2014, Ctrip granted the Company the right to appoint an observer to Ctrip's board of directors and permission to acquire Ctrip shares (through the acquisition of Ctrip ADSs in the open market) over the twelve months following the purchase date, so that combined with ADSs issuable upon conversion of this note, the Company could hold up to 10% of Ctrip's outstanding equity. In connection with the purchase of the convertible note in May 2015, Ctrip granted the Company permission to acquire additional Ctrip shares (through the acquisition of Ctrip ADSs in the open market) over the twelve months following the purchase date, so that combined with ADSs issuable upon conversion of the two notes, the Company could hold up to an aggregate of 15% of Ctrip's outstanding equity.

The following table summarizes, by major security type, the Company's investments as of December 31, 2014 (in thousands): 

	Cost		Gross  Unrealized  Gains		Gross  Unrealized Losses			Fair Value
Available-for-sale securities:
Short-term investments:
Foreign government securities	$	52,524	$	—	$	(34	)	$	52,490
U.S. government securities	364,276		24		(34		)	364,266
Corporate debt securities	582,160		15		(652		)	581,523
Commercial paper	39,092		—		—			39,092
U.S. government agency securities	104,829		—		(18		)	104,811
Total short-term investments	$	1,142,881	$	39	$	(738	)	$	1,142,182
Long-term investments:
Foreign government securities	$	12,707	$	—	$	(36	)	$	12,671
U.S. government securities	557,130		80		(762		)	556,448
Corporate debt securities	2,332,030		2,299		(5,296		)	2,329,033
U.S. government agency securities	95,108		97		(111		)	95,094
U.S. municipal securities	1,114		—		(12		)	1,102
Ctrip convertible debt securities	500,000		—		(74,039		)	425,961
Ctrip equity securities	421,930		—		(86,586		)	335,344
Total long-term investments	$	3,920,019	$	2,476	$	(166,842	)	$	3,755,653

The Company has classified its investments as available-for-sale securities. These securities are carried at estimated fair value with the aggregate unrealized gains and losses related to these investments, net of taxes, reflected as a part of "Accumulated other comprehensive loss" in the Unaudited Consolidated Balance Sheets. Classification as short-term or long-term investment is based upon the maturity of the debt securities.

The Company recognized $0.3 million of net realized losses and $3.1 million of net realized gains related to investments for the three and nine months ended September 30, 2015, respectively. There were no significant realized gains or losses related to investments for the three and nine months ended September 30, 2014.

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INTANGIBLE ASSETS AND GOODWILL

9 Months Ended

Sep. 30, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

INTANGIBLE ASSETS AND GOODWILL

INTANGIBLE ASSETS AND GOODWILL

The Company's intangible assets at September 30, 2015 and December 31, 2014 consisted of the following (in thousands): 

	September 30, 2015							December 31, 2014
	Gross  Carrying  Amount		Accumulated Amortization			Net  Carrying  Amount		Gross  Carrying  Amount		Accumulated Amortization			Net  Carrying  Amount		Amortization Period	Weighted  Average  Useful Life
Supply and distribution agreements	$	826,860	$	(218,654	)	$	608,206	$	842,642	$	(188,441	)	$	654,201	10 - 20 years	16 years
Technology	111,483		(56,813		)	54,670		108,987		(43,746		)	65,241		1 - 5 years	5 years
Patents	1,623		(1,553		)	70		1,623		(1,524		)	99		15 years	15 years
Internet domain names	38,764		(19,910		)	18,854		41,652		(16,895		)	24,757		2 - 20 years	8 years
Trade names	1,672,122		(163,262		)	1,508,860		1,674,218		(100,850		)	1,573,368		5 - 20 years	20 years
Non-compete agreements	21,900		(9,290		)	12,610		21,000		(3,908		)	17,092		3 - 4 years	3 years
Other	135		(135		)	—		141		(138		)	3
Total intangible assets	$	2,672,887	$	(469,617	)	$	2,203,270	$	2,690,263	$	(355,502	)	$	2,334,761

Intangible assets with determinable lives are amortized on a straight-line basis.  Intangible asset amortization expense was approximately $42.2 million and $128.2 million for the three and nine months ended September 30, 2015, respectively, and $35.8 million and $81.6 million for the three and nine months ended September 30, 2014, respectively.

The amortization expense for intangible assets for the remainder of 2015, the annual expense for the next five years, and the expense thereafter is expected to be as follows (in thousands): 

2015	$	42,107
2016	167,413
2017	160,088
2018	141,499
2019	131,380
2020	124,089
Thereafter	1,436,694
	$	2,203,270

The change in goodwill for the nine months ended September 30, 2015 consists of the following (in thousands): 

Balance at December 31, 2014	$	3,326,474
Acquisitions	77,720
Currency translation adjustments	(17,675		)
Balance at September 30, 2015	$	3,386,519

A substantial portion of the intangibles and goodwill relates to the acquisition of OpenTable in July 2014 and KAYAK in May 2013.

As of September 30, 2015, the Company performed its annual goodwill impairment testing and concluded that there was no impairment of goodwill. Other than OpenTable, the fair values of the Company's reporting units substantially exceeded their respective carrying values as of September 30, 2015.

As of September 30, 2015, OpenTable’s carrying value was $2.5 billion, of which $1.5 billion relates to goodwill. The fair value of OpenTable slightly exceeded its carrying value as of September 30, 2015. OpenTable’s fair value was estimated using a combination of standard valuation techniques, including an income approach (discounted cash flows) and market approaches (EBITDA multiples of comparable publicly-traded companies and for precedent transactions).

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STOCK-BASED EMPLOYEE COMPENSATION (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 58,274	$ 46,136	$ 172,446	$ 120,108
Restricted Stock Units and Performance Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized estimated compensation expense, unvested share-based awards	$ 327,600		$ 327,600
Total future compensation cost related to unvested share-based awards, expected period of recognition			2 years
Granted (in shares)			185,741
Granted (in dollars per share)			$ 1,239.56
Unvested at September 30, 2015	582,360		582,360		570,315
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)			78,418
Vesting period (in years)			3 years
Grant date fair value			$ 97,400
Granted (in dollars per share)			$ 1,242.70
Performance Share Units 2015 Grants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)			107,323
Grant date fair value			$ 132,800
Granted (in dollars per share)			$ 1,237.28
Estimated number of probable shares to be issued (in shares)	105,982		105,982
Maximum shares that could be issued (in shares)	257,727		257,727
Minimum shares that could be issued (in shares)	52,368		52,368
Performance Share Units 2014 Grants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)					72,277
Grant date fair value					$ 96,100
Granted (in dollars per share)					$ 1,329.11
Estimated number of probable shares to be issued (in shares)	109,124		109,124
Maximum shares that could be issued (in shares)	141,062		141,062
Minimum shares that could be issued (in shares)	48,810		48,810
Unvested at September 30, 2015	69,767		69,767
Performance Share Units 2013 Grants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)						104,865
Grant date fair value						$ 74,400
Granted (in dollars per share)						$ 709.74
Estimated number of probable shares to be issued (in shares)	185,318		185,318
Maximum shares that could be issued (in shares)	214,397		214,397
Minimum shares that could be issued (in shares)	38,508		38,508
Unvested at September 30, 2015	98,677		98,677
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 4,800	$ 8,100	$ 19,800	14,900
Total future compensation cost related to unvested share-based awards, expected period of recognition			1 year 3 months
Exercised (in shares)			49,213
Exercised (in dollars per share)			$ 354.88
Stock options exercised, total intrinsic value			$ 42,800	$ 43,700
Ending balance (in shares)	94,491.000		94,491.000		146,385
Weighted Average Exercise Price (in dollars per share)	$ 384.44		$ 384.44		$ 380.05
Aggregate Intrinsic Value	$ 80,546		$ 80,546		$ 111,277
Weighted Average Remaining Contractual Term, Exercisable			5 years 4 months
Share Based Compensation Arrangement By Share Based Payment Award Options Vested in Period Number Of Shares			29,527	26,765
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value			$ 19,900	$ 13,500
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options	$ 15,100		15,100
Awards assumed in acquisitions [Member] | Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Acquisition date fair value of assumed options			$ 1,400
Acquisition date fair value per share of assumed stock options			$ 1,015.81

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ACCUMULATED OTHER COMPREHENSIVE LOSS

9 Months Ended

Sep. 30, 2015

Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]

ACCUMULATED OTHER COMPREHENSIVE LOSS

ACCUMULATED OTHER COMPREHENSIVE LOSS

The table below provides the balances for each classification of accumulated other comprehensive loss as of September 30, 2015 and December 31, 2014 (in thousands): 

	September 30, 2015			December 31, 2014
Foreign currency translation adjustments, net of tax (1)	$	(180,829	)	$	(102,758	)
Net unrealized gain (loss) on marketable securities, net of tax (2)	(4,636		)	(157,144		)
Accumulated other comprehensive loss	$	(185,465	)	$	(259,902	)

(1) Foreign currency translation adjustments, net of tax, includes net losses from fair value adjustments at September 30, 2015 of $34.8 million after tax ($52.6 million before tax) and net losses from fair value adjustments at December 31, 2014 of $37.8 million after tax ($57.8 million before tax) associated with derivatives designated as net investment hedges (see Note 5).

Foreign currency translation adjustments, net of tax, includes foreign currency transaction gains at September 30, 2015 of $106.7 million after tax ($181.9 million before tax) associated with the Company's 2024 Notes and 2027 Notes and foreign currency transaction gains at December 31, 2014 of $48.3 million after tax ($83.8 million before tax) associated with the Company's 2024 Notes. The 2024 Notes and 2027 Notes are Euro-denominated debt and are designated as hedges of certain of the Company's Euro-denominated net assets (see Note 8).

The remaining balance in currency translation adjustments excludes income taxes as a result of the Company's current intention to indefinitely reinvest the earnings of its international subsidiaries outside of the United States.

(2) The unrealized loss before tax at September 30, 2015 was $16.0 million, of which unrealized gains of $30.6 million were exempt from tax under the Dutch participation exemption and unrealized losses of $46.6 million were taxable. The unrealized loss before tax at December 31, 2014 was $164.7 million, of which unrealized losses of $134.6 million were exempt from tax under the Dutch participation exemption and unrealized losses of $30.1 million were taxable.

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INVESTMENTS (Tables)

9 Months Ended

Sep. 30, 2015

Investments, Debt and Equity Securities [Abstract]

Investments

The following table summarizes, by major security type, the Company's investments as of September 30, 2015 (in thousands): 

	Cost		Gross  Unrealized  Gains		Gross  Unrealized Losses			Fair Value
Available-for-sale securities:
Short-term investments:
Foreign government securities	$	71,834	$	2	$	(4	)	$	71,832
U.S. government securities	638,131		263		—			638,394
Corporate debt securities	497,498		134		(405		)	497,227
Commercial paper	1,716		—		—			1,716
U.S. government agency securities	2,012		3		—			2,015
Total short-term investments	$	1,211,191	$	402	$	(409	)	$	1,211,184
Long-term investments:
Foreign government securities	$	485,783	$	381	$	(190	)	$	485,974
U.S. government securities	773,651		4,563		—			778,214
Corporate debt securities	3,749,053		6,175		(15,001		)	3,740,227
U.S. municipal securities	1,089		6		—			1,095
Ctrip convertible debt securities	750,000		—		(50,525		)	699,475
Ctrip equity securities	584,099		38,546		—			622,645
Total long-term investments	$	6,343,675	$	49,671	$	(65,716	)	$	6,327,630

The following table summarizes, by major security type, the Company's investments as of December 31, 2014 (in thousands): 

	Cost		Gross  Unrealized  Gains		Gross  Unrealized Losses			Fair Value
Available-for-sale securities:
Short-term investments:
Foreign government securities	$	52,524	$	—	$	(34	)	$	52,490
U.S. government securities	364,276		24		(34		)	364,266
Corporate debt securities	582,160		15		(652		)	581,523
Commercial paper	39,092		—		—			39,092
U.S. government agency securities	104,829		—		(18		)	104,811
Total short-term investments	$	1,142,881	$	39	$	(738	)	$	1,142,182
Long-term investments:
Foreign government securities	$	12,707	$	—	$	(36	)	$	12,671
U.S. government securities	557,130		80		(762		)	556,448
Corporate debt securities	2,332,030		2,299		(5,296		)	2,329,033
U.S. government agency securities	95,108		97		(111		)	95,094
U.S. municipal securities	1,114		—		(12		)	1,102
Ctrip convertible debt securities	500,000		—		(74,039		)	425,961
Ctrip equity securities	421,930		—		(86,586		)	335,344
Total long-term investments	$	3,920,019	$	2,476	$	(166,842	)	$	3,755,653

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OTHER ASSETS (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Other Assets, Noncurrent [Abstract]
Deferred debt issuance costs	$ 34,827	$ 27,204
Security deposits	14,168	12,368
Deferred tax assets	9,912	8,548
Investments	63,926	588
Other	18,426	8,640
Total	$ 141,259	$ 57,348

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UNAUDITED CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Allocated Share-based Compensation Expense	$ 58,274	$ 46,136	$ 172,446	$ 120,108

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UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
OPERATING ACTIVITIES:
Net income	$ 2,047,091	$ 1,969,922
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	73,520	54,704
Amortization	128,210	81,558
Provision for uncollectible accounts, net	17,242	14,150
Deferred income taxes	(63,675)	46,451
Stock-based compensation expense and other stock-based payments	174,068	122,120
Amortization of debt issuance costs	5,913	3,818
Amortization of debt discount	49,868	39,079
Loss on early extinguishment of debt	3	6,254
Changes in assets and liabilities:
Accounts receivable	(289,604)	(353,357)
Prepaid expenses and other current assets	(86,808)	(35,341)
Accounts payable, accrued expenses and other current liabilities	191,881	209,557
Other	(26,550)	202
Net cash provided by operating activities	2,221,159	2,159,117
INVESTING ACTIVITIES:
Purchase of investments	(5,597,897)	(7,327,635)
Proceeds from sale of investments	3,180,981	9,703,032
Additions to property and equipment	(126,637)	(90,725)
Acquisitions and other investments, net of cash acquired	(135,664)	(2,496,084)
Proceeds from foreign currency contracts	453,818	14,354
Payments on foreign currency contracts	(448,640)	(94,661)
Change in restricted cash	0	9,309
Net cash used in investing activities	(2,674,039)	(282,410)
FINANCING ACTIVITIES:
Proceeds from revolving credit facility	0	995,000
Payments related to revolving credit facility	0	(995,000)
Proceeds from the issuance of long-term debt	1,619,951	2,282,217
Payment of debt issuance costs	(13,507)	(16,241)
Payments related to conversion of senior notes	(147,629)	(121,925)
Repurchase of common stock	(2,267,384)	(245,456)
Payments of contingent consideration	(10,700)	0
Proceeds from exercise of stock options	19,139	12,434
Excess tax benefits on stock-based awards	90,935	14,139
Net cash (used in) provided by financing activities	(709,195)	1,925,168
Effect of exchange rate changes on cash and cash equivalents	(144,918)	(48,145)
Net (decrease) increase in cash and cash equivalents	(1,306,993)	3,753,730
Cash and cash equivalents, beginning of period	3,148,651	1,289,994
Cash and cash equivalents, end of period	1,841,658	5,043,724
SUPPLEMENTAL CASH FLOW INFORMATION:
Cash paid during the period for income taxes	499,421	412,185
Cash paid during the period for interest	50,400	14,531
Non-cash investing activity for contingent consideration	9,170	13,310
Non-cash financing activity for acquisitions	$ 0	$ 13,752

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FAIR VALUE MEASUREMENTS (Tables)

9 Months Ended

Sep. 30, 2015

Fair Value Disclosures [Abstract]

Financial instruments carried at fair value

Financial assets and liabilities carried at fair value as of September 30, 2015 are classified in the tables below in the categories described below (in thousands): 

	Level 1		Level 2		Total
ASSETS:
Cash equivalents:
U.S. Treasury money market funds	$	76,282	$	—	$	76,282
Foreign government securities	—		298,375		298,375
U.S. government securities	—		525,381		525,381
Commercial paper	—		20,910		20,910
Short-term investments:
Foreign government securities	—		71,832		71,832
U.S. government securities	—		638,394		638,394
Corporate debt securities	—		497,227		497,227
Commercial paper	—		1,716		1,716
U.S. government agency securities	—		2,015		2,015
Foreign exchange derivatives	—		358		358
Long-term investments:
Foreign government securities	—		485,974		485,974
U.S. government securities	—		778,214		778,214
Corporate debt securities	—		3,740,227		3,740,227
U.S. municipal securities	—		1,095		1,095
Ctrip convertible debt securities	—		699,475		699,475
Ctrip equity securities	622,645		—		622,645
Total assets at fair value	$	698,927	$	7,761,193	$	8,460,120

	Level 1		Level 2		Total
LIABILITIES:
Foreign exchange derivatives	$	—	$	317	$	317

Financial assets and liabilities carried at fair value as of December 31, 2014 are classified in the tables below in the categories described below (in thousands):

	Level 1		Level 2		Total
ASSETS:
Cash equivalents:
U.S. Treasury money market funds	$	155,608	$	—	$	155,608
Foreign government securities	—		974,855		974,855
U.S. government securities	—		676,503		676,503
Corporate debt securities	—		45,340		45,340
Commercial paper	—		382,544		382,544
U.S. government agency securities	—		10,000		10,000
Short-term investments:
Foreign government securities	—		52,490		52,490
U.S. government securities	—		364,266		364,266
Corporate debt securities	—		581,523		581,523
Commercial paper	—		39,092		39,092
U.S. government agency securities	—		104,811		104,811
Foreign exchange derivatives	—		336		336
Long-term investments:
Foreign government securities	—		12,671		12,671
U.S. government securities	—		556,448		556,448
Corporate debt securities	—		2,329,033		2,329,033
U.S. government agency securities	—		95,094		95,094
U.S. municipal securities	—		1,102		1,102
Ctrip convertible debt securities	—		425,961		425,961
Ctrip equity securities	335,344		—		335,344
Total assets at fair value	$	490,952	$	6,652,069	$	7,143,021

	Level 1		Level 2		Total
LIABILITIES:
Foreign exchange derivatives	$	—	$	129	$	129

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FAIR VALUE MEASUREMENTS (Details) - Recurring Basis [Member] - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
ASSETS:
Total assets at fair value	$ 8,460,120	$ 7,143,021
Foreign Currency Contracts [Member]
LIABILITIES:
Total liabilities at fair value	317	129
Short-term Investments [Member] | Foreign Currency Contracts [Member]
ASSETS:
Total assets at fair value	358	336
U.S. Treasury money market funds | Cash Equivalents [Member]
ASSETS:
Total assets at fair value	76,282	155,608
Foreign government securities | Cash Equivalents [Member]
ASSETS:
Total assets at fair value	298,375	974,855
Foreign government securities | Short-term Investments [Member]
ASSETS:
Total assets at fair value	71,832	52,490
Foreign government securities | Long-term Investments [Member]
ASSETS:
Total assets at fair value	485,974	12,671
U.S. government securities | Cash Equivalents [Member]
ASSETS:
Total assets at fair value	525,381	676,503
U.S. government securities | Short-term Investments [Member]
ASSETS:
Total assets at fair value	638,394	364,266
U.S. government securities | Long-term Investments [Member]
ASSETS:
Total assets at fair value	778,214	556,448
Commercial paper | Cash Equivalents [Member]
ASSETS:
Total assets at fair value	20,910	382,544
Commercial paper | Short-term Investments [Member]
ASSETS:
Total assets at fair value	1,716	39,092
Corporate debt securities | Cash Equivalents [Member]
ASSETS:
Total assets at fair value		45,340
Corporate debt securities | Short-term Investments [Member]
ASSETS:
Total assets at fair value	497,227	581,523
Corporate debt securities | Long-term Investments [Member]
ASSETS:
Total assets at fair value	3,740,227	2,329,033
U.S. government agency securities | Cash Equivalents [Member]
ASSETS:
Total assets at fair value		10,000
U.S. government agency securities | Short-term Investments [Member]
ASSETS:
Total assets at fair value	2,015	104,811
U.S. government agency securities | Long-term Investments [Member]
ASSETS:
Total assets at fair value		95,094
U.S. municipal securities | Long-term Investments [Member]
ASSETS:
Total assets at fair value	1,095	1,102
Ctrip convertible debt securities | Long-term Investments [Member]
ASSETS:
Total assets at fair value	699,475	425,961
Ctrip equity securities | Long-term Investments [Member]
ASSETS:
Total assets at fair value	622,645	335,344
Level 1 [Member]
ASSETS:
Total assets at fair value	698,927	490,952
Level 1 [Member] | Foreign Currency Contracts [Member]
LIABILITIES:
Total liabilities at fair value	0	0
Level 1 [Member] | Short-term Investments [Member] | Foreign Currency Contracts [Member]
ASSETS:
Total assets at fair value	0	0
Level 1 [Member] | U.S. Treasury money market funds | Cash Equivalents [Member]
ASSETS:
Total assets at fair value	76,282	155,608
Level 1 [Member] | Foreign government securities | Cash Equivalents [Member]
ASSETS:
Total assets at fair value	0	0
Level 1 [Member] | Foreign government securities | Short-term Investments [Member]
ASSETS:
Total assets at fair value	0	0
Level 1 [Member] | Foreign government securities | Long-term Investments [Member]
ASSETS:
Total assets at fair value	0	0
Level 1 [Member] | U.S. government securities | Cash Equivalents [Member]
ASSETS:
Total assets at fair value	0	0
Level 1 [Member] | U.S. government securities | Short-term Investments [Member]
ASSETS:
Total assets at fair value	0	0
Level 1 [Member] | U.S. government securities | Long-term Investments [Member]
ASSETS:
Total assets at fair value	0	0
Level 1 [Member] | Commercial paper | Cash Equivalents [Member]
ASSETS:
Total assets at fair value	0	0
Level 1 [Member] | Commercial paper | Short-term Investments [Member]
ASSETS:
Total assets at fair value	0	0
Level 1 [Member] | Corporate debt securities | Cash Equivalents [Member]
ASSETS:
Total assets at fair value		0
Level 1 [Member] | Corporate debt securities | Short-term Investments [Member]
ASSETS:
Total assets at fair value	0	0
Level 1 [Member] | Corporate debt securities | Long-term Investments [Member]
ASSETS:
Total assets at fair value	0	0
Level 1 [Member] | U.S. government agency securities | Cash Equivalents [Member]
ASSETS:
Total assets at fair value		0
Level 1 [Member] | U.S. government agency securities | Short-term Investments [Member]
ASSETS:
Total assets at fair value	0	0
Level 1 [Member] | U.S. government agency securities | Long-term Investments [Member]
ASSETS:
Total assets at fair value		0
Level 1 [Member] | U.S. municipal securities | Long-term Investments [Member]
ASSETS:
Total assets at fair value	0	0
Level 1 [Member] | Ctrip convertible debt securities | Long-term Investments [Member]
ASSETS:
Total assets at fair value	0	0
Level 1 [Member] | Ctrip equity securities | Long-term Investments [Member]
ASSETS:
Total assets at fair value	622,645	335,344
Level 2 [Member]
ASSETS:
Total assets at fair value	7,761,193	6,652,069
Level 2 [Member] | Foreign Currency Contracts [Member]
LIABILITIES:
Total liabilities at fair value	317	129
Level 2 [Member] | Short-term Investments [Member] | Foreign Currency Contracts [Member]
ASSETS:
Total assets at fair value	358	336
Level 2 [Member] | U.S. Treasury money market funds | Cash Equivalents [Member]
ASSETS:
Total assets at fair value	0	0
Level 2 [Member] | Foreign government securities | Cash Equivalents [Member]
ASSETS:
Total assets at fair value	298,375	974,855
Level 2 [Member] | Foreign government securities | Short-term Investments [Member]
ASSETS:
Total assets at fair value	71,832	52,490
Level 2 [Member] | Foreign government securities | Long-term Investments [Member]
ASSETS:
Total assets at fair value	485,974	12,671
Level 2 [Member] | U.S. government securities | Cash Equivalents [Member]
ASSETS:
Total assets at fair value	525,381	676,503
Level 2 [Member] | U.S. government securities | Short-term Investments [Member]
ASSETS:
Total assets at fair value	638,394	364,266
Level 2 [Member] | U.S. government securities | Long-term Investments [Member]
ASSETS:
Total assets at fair value	778,214	556,448
Level 2 [Member] | Commercial paper | Cash Equivalents [Member]
ASSETS:
Total assets at fair value	20,910	382,544
Level 2 [Member] | Commercial paper | Short-term Investments [Member]
ASSETS:
Total assets at fair value	1,716	39,092
Level 2 [Member] | Corporate debt securities | Cash Equivalents [Member]
ASSETS:
Total assets at fair value		45,340
Level 2 [Member] | Corporate debt securities | Short-term Investments [Member]
ASSETS:
Total assets at fair value	497,227	581,523
Level 2 [Member] | Corporate debt securities | Long-term Investments [Member]
ASSETS:
Total assets at fair value	3,740,227	2,329,033
Level 2 [Member] | U.S. government agency securities | Cash Equivalents [Member]
ASSETS:
Total assets at fair value		10,000
Level 2 [Member] | U.S. government agency securities | Short-term Investments [Member]
ASSETS:
Total assets at fair value	2,015	104,811
Level 2 [Member] | U.S. government agency securities | Long-term Investments [Member]
ASSETS:
Total assets at fair value		95,094
Level 2 [Member] | U.S. municipal securities | Long-term Investments [Member]
ASSETS:
Total assets at fair value	1,095	1,102
Level 2 [Member] | Ctrip convertible debt securities | Long-term Investments [Member]
ASSETS:
Total assets at fair value	699,475	425,961
Level 2 [Member] | Ctrip equity securities | Long-term Investments [Member]
ASSETS:
Total assets at fair value	$ 0	$ 0

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INCOME TAXES

9 Months Ended

Sep. 30, 2015

Income Tax Disclosure [Abstract]

INCOME TAXES

INCOME TAXES

Income tax expense consists of U.S. and international income taxes, determined using an estimate of the Company's annual effective tax rate.  A deferred tax liability is recognized for all taxable temporary differences, and a deferred tax asset is recognized for all deductible temporary differences and operating loss and tax credit carryforwards.  A valuation allowance is provided when it is more likely than not that some portion or all of a deferred tax asset will not be realized.

The Company recognizes income tax expense based upon the applicable tax rates and tax laws of the countries in which the income is generated.  During the three and nine months ended September 30, 2015 and 2014, a substantial majority of the Company's international sourced income was generated in the Netherlands.  Income tax expense for the three and nine months ended September 30, 2015 and 2014 differs from the expected tax expense at the U.S. federal statutory rate of 35%, primarily due to lower international tax rates, partially offset by U.S. state income taxes and certain non-deductible expenses.

According to Dutch corporate income tax law, income generated from qualifying innovative activities is taxed at a rate of 5% ("Innovation Box Tax") rather than the Dutch statutory rate of 25%. A portion of Booking.com's earnings during the three and nine months ended September 30, 2015 and 2014 qualifies for Innovation Box Tax treatment, which had a significant beneficial impact on the Company's effective tax rate for those periods.

The Company has significant deferred tax assets, resulting principally from U.S. net operating loss carryforwards ("NOLs"). The amount of NOLs available for the Company's use is limited by Section 382 of the U.S. Internal Revenue Code ("IRC Section 382"). At December 31, 2014, after considering the impact of IRC Section 382, the Company had approximately $1.2 billion of available NOLs for U.S. federal income tax purposes, comprised of $22 million of NOLs generated from operating losses and approximately $1.2 billion of NOLs generated from equity-related transactions, including equity-based compensation and stock warrants. The NOLs mainly expire from December 31, 2019 to December 31, 2021. The utilization of these NOLs is dependent upon the Company's ability to generate sufficient future taxable income in the United States. Pursuant to accounting guidance, tax benefits related to equity deductions will be recognized by crediting additional paid-in capital when they are realized by reducing the Company's current income tax liability. The Company periodically evaluates the likelihood of the realization of deferred tax assets, and reduces the carrying amount of these deferred tax assets by a valuation allowance to the extent it believes a portion will not be realized. The Company considers many factors when assessing the likelihood of future realization of the deferred tax assets, including its recent cumulative earnings experience by taxing jurisdiction, expectations of future income, tax planning strategies, the carryforward periods available for tax reporting purposes, and other relevant factors.

It is the practice and current intention of the Company to reinvest the earnings of its international subsidiaries in those operations, therefore, at September 30, 2015, no provision had been made for U.S. taxes on international earnings.  At December 31, 2014, international earnings intended to be indefinitely reinvested outside of the United States amounted to approximately $7.3 billion.  It is not practicable to determine the U.S. federal income tax liability that would be payable if such earnings were not indefinitely reinvested.