Groupon (GRPN) 10-Q 27 Oct 16 2016 Q3 Quarterly report Financial data

Cover Document

Cover Document - shares	9 Months Ended
	Sep. 30, 2016	Oct. 24, 2016
Entity Registrant Name	Groupon, Inc.
Entity Central Index Key	1,490,281
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Common Class A [Member]
Common Stock, Shares, Outstanding		571,162,037
Common Class B [Member]
Common Stock, Shares, Outstanding		2,399,976

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 689,747	$ 853,362
Accounts receivable, net	74,047	68,175
Prepaid expenses and other current assets	145,280	153,705
Total current assets	909,074	1,075,242
Property, equipment and software, net	179,987	198,897
Goodwill	289,856	287,332
Intangible assets, net	25,475	36,483
Investments	180,617	178,236
Deferred income taxes, non-current	4,242	3,454
Other non-current assets	24,290	16,620
Total Assets	1,613,541	1,796,264
Current liabilities:
Accounts payable	21,833	24,590
Accrued merchant and supplier payables	608,939	776,211
Accrued expenses and other current liabilities	353,696	402,724
Total current liabilities	984,468	1,203,525
Convertible Debt, Noncurrent	176,473	0
Deferred income taxes, non-current	6,840	8,612
Other non-current liabilities	113,604	113,540
Total Liabilities	1,281,385	1,325,677
Commitments and contingencies (see Note 7)
Stockholders' Equity
Additional paid-in capital	2,094,975	1,964,453
Treasury stock, at cost, 93,141,211 shares at September 30, 2015 and 27,239,104 shares at December 31, 2014	(757,520)	(645,041)
Accumulated deficit	(1,046,422)	(901,292)
Accumulated other comprehensive income	40,132	51,206
Total Groupon, Inc. Stockholders' Equity	331,238	469,398
Noncontrolling interests	918	1,189
Total Equity	332,156	470,587
Total Liabilities and Equity	1,613,541	1,796,264
Common Class A [Member]
Stockholders' Equity
Common Stock, Value, Issued	73	72
Common Class B [Member]
Stockholders' Equity
Common Stock, Value, Issued	0	0
Common Stock [Member]
Stockholders' Equity
Common Stock, Value, Issued	$ 0	$ 0

Consolidated Balance Sheets Par

Consolidated Balance Sheets Parenthetical - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Investments at Fair Value	$ 150,532	$ 163,675
Treasury Stock [Member]
Treasury Stock, Shares	159,298,113	128,468,165
Common Stock [Member]
Common Stock, Par Value	$ 0.0001	$ 0.0001
Common Stock, Shares Authorized	2,010,000,000	2,010,000,000
Common Stock, Shares, Issued	0	0
Common Stock, Shares, Outstanding	0	0
Common Class A [Member]
Common Stock, Par Value	$ 0.0001	$ 0.0001
Common Stock, Shares Authorized	2,000,000,000	2,000,000,000
Common Stock, Shares, Issued	726,864,414	717,387,446
Common Stock, Shares, Outstanding	572,780,079	588,919,281
Common Class B [Member]
Common Stock, Par Value	$ 0.0001	$ 0.0001
Common Stock, Shares Authorized	10,000,000	10,000,000
Common Stock, Shares, Issued	2,399,976	2,399,976
Common Stock, Shares, Outstanding	2,399,976	2,399,976

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenue:
Third party and other	$ 309,836	$ 326,306	$ 962,533	$ 1,027,273
Direct	410,632	387,289	1,245,936	1,175,073
Total revenue	720,468	713,595	2,208,469	2,202,346
Cost of revenue:
Third party and other	40,419	46,050	131,000	145,292
Direct	365,932	338,633	1,090,436	1,043,729
Total cost of revenue	406,351	384,683	1,221,436	1,189,021
Gross profit	314,117	328,912	987,033	1,013,325
Operating expenses:
Marketing	87,858	61,587	269,616	171,127
Selling, general and administrative	253,554	326,248	811,710	904,816
Restructuring charges	1,459	24,146	29,988	24,146
Gain (Loss) on Disposition of Business	(2,060)	(13,710)	(11,399)	(13,710)
Acquisition-related (benefit) expense, net	(9)	1,064	4,305	1,300
Total operating expenses	340,802	399,335	1,104,220	1,087,679
Income (loss) from operations	(26,685)	(70,423)	(117,187)	(74,354)
Other expense, net	(7,028)	(8,160)	(14,303)	(25,146)
Loss from continuing operations before provision for income taxes	(33,713)	(78,583)	(131,490)	(99,500)
Provision for income taxes	2,079	(53,970)	1,629	(42,881)
Loss from continuing operations	(35,792)	(24,613)	(133,119)	(56,619)
Income (loss) from discontinued operations, net of tax	0	0	0	133,463
Net loss	(35,792)	(24,613)	(133,119)	76,844
Net income attributable to noncontrolling interests	(2,184)	(3,002)	(8,880)	(9,648)
Net loss attributable to Groupon, Inc.	$ (37,976)	$ (27,615)	$ (141,999)	$ 67,196
Basic net income (loss) per share
Continuing operations	$ (0.07)	$ (0.04)	$ (0.25)	$ (0.10)
Discontinued operations	0	0	0	0.20
Basic, net (loss) earnings per share	(0.07)	(0.04)	(0.25)	0.10
Diluted net income (loss) per share
Continuing operations	(0.07)	(0.04)	(0.25)	(0.10)
Discontinued operations	0	0	0	0.20
Diluted, net (loss) earnings per share	$ (0.07)	$ (0.04)	$ (0.25)	$ 0.10
Weighted average number of shares outstanding
Basic, weighted average number of shares outstanding	575,216,191	644,894,785	578,290,291	664,302,630
Diluted, weighted average number of shares outstanding	575,216,191	644,894,785	578,290,291	664,302,630

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Net loss from continuing operations	$ (35,792)	$ (24,613)	$ (133,119)	$ (56,619)
Other comprehensive (loss) income, net of tax:
Reclassification of amount included in net income (loss) from continuing operations			(300)	4,400
Net change in unrealized gain (loss) - Foreign Currency Translation			(10,959)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	23	26		79
Other comprehensive income			(11,074)
Comprehensive loss	(34,952)	(26,932)	(144,193)	94,450
Net loss from discontinued operations	0	0	0	133,463
Comprehensive income attributable to noncontrolling interests	(2,184)	(3,002)	(8,880)	(9,648)
Comprehensive loss attributable to Groupon Inc.	(37,136)	(29,934)	(153,073)	84,802
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Other comprehensive (loss) income, net of tax:
Net change in unrealized gain (loss), net, on AFS	(16)	(193)		(17)
Other comprehensive income			69
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Other comprehensive (loss) income, net of tax:
Other comprehensive income			(184)
Continuing Operations [Member]
Other comprehensive (loss) income, net of tax:
Net unrealized gain (losses) during the period	612	(1,246)	(3,183)	6,085
Reclassification of amount included in net income (loss) from continuing operations	221	(906)	(7,776)	3,495
Net change in unrealized gain (loss) - Foreign Currency Translation	833	(2,152)	(10,959)	9,580
Other comprehensive income	840	(2,319)	(11,074)	9,642
Comprehensive loss	(34,952)	(26,932)	(144,193)	(46,977)
Discontinued Operations, Disposed of by Sale [Member]
Other comprehensive (loss) income, net of tax:
Net unrealized gain (losses) during the period	0	0	0	(4,349)
Reclassification of amount included in net income (loss) from continuing operations	0	0	0	12,313
Net change in unrealized gain (loss) - Foreign Currency Translation	0	0	0	7,964
Other comprehensive income	$ 0	$ 0	$ 0	$ 141,427

Consolidated Statements of Com6

Consolidated Statements of Comprehensive Income (Loss) Condensed Consolidated Statements of Comprehensive Income (Loss) Parenthetical - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax	$ 4	$ 5	$ 13	$ 15
Tax effects for change in unrealized gain (loss)	(10)	(116)	(113)	(9)
Discontinued Operations, Disposed of by Sale [Member]
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax	$ 0	$ 0	$ 0	$ 0

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - 9 months ended Sep. 30, 2016 - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Parent [Member]	Noncontrolling Interest [Member]	Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Beginning Balance, Shares, Outstanding at Dec. 31, 2015		719,787,422
Beginning Balance, Equity at Dec. 31, 2015	$ 470,587	$ 72	$ 1,964,453		$ (901,292)	$ 51,206	$ 469,398	$ 1,189	$ 52,261
Beginning Balance, Treasury Stock, Shares at Dec. 31, 2015				(128,468,165)
Beginning Balance, Treasury Stock, Value at Dec. 31, 2015	(645,041)			$ (645,041)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect on Retained Earnings, Net of Tax	(3,131)				(3,131)		(3,131)
Net loss	(133,119)				(141,999)		(141,999)	8,880
Foreign currency translation, net of tax	(10,959)					(10,959)		0	(10,959)
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), Net of Tax	69					69	69	0
Unrealized gain (loss) on available-for-sale debt security, net of tax	(184)					(184)	(184)
Exercise of stock options, shares		490,283
Exercise of stock options, value	618		618				618
Vesting of restricted stock units, shares		17,667,674
Vesting of restricted stock units, value		$ 2	(2)
Shares issued under employee stock purchase plan, shares		1,669,782
Shares issued under employee stock purchase plan, value	4,358		4,358				4,358
Tax withholding related to net share settlements of stock-based compensation awards, shares		(6,168,617)
Tax withholding related to net share settlements of stock-based compensation awards, value	(23,830)	$ (1)	(23,829)				(23,830)
Stock-based compensation on equity-classified awards	105,716		105,716				105,716
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt			67,329
Purchase of Convertible Note Hedges			(59,163)
Adjustments to Additional Paid in Capital, Warrant Issued			35,495
Purchases of treasury stock, shares				(30,829,948)
Purchases of treasury stock, value	(112,479)			$ (112,479)			(112,479)
Partnership distributions to noncontrolling interest holders	(9,151)							(9,151)
Ending Balance, Treasury Stock, Shares at Sep. 30, 2016				(159,298,113)
Ending Balance, Treasury Stock, Value at Sep. 30, 2016	(757,520)			$ (757,520)
Ending Balance, Shares, Outstanding at Sep. 30, 2016		733,249,576
Ending Balance, Equity at Sep. 30, 2016	$ 332,156	$ 73	$ 2,094,975		$ (1,046,422)	$ 40,132	$ 331,238	$ 918	$ 41,302

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015
Operating activities
Net loss		$ (133,119)	$ 76,844
Less: Income (loss) from discontinued operations		0	133,463
Loss from continuing operations		(133,119)	(56,619)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation, Depletion and Amortization		88,697	84,241
Amortization of acquired intangible assets		13,643	14,966
Share-based Compensation	[1]	94,750	109,204
Restructuring Costs and Asset Impairment Charges		45	345
Gain (Loss) on Disposition of Business		(11,399)	(13,710)
Deferred income taxes		(6,436)	(15,252)
Gain from changes in fair value of contingent consideration	[2]	4,130	(268)
Fair Value, Option, Changes in Fair Value, Gain (Loss)		7,301	2,114
Amortization of Debt Discount (Premium)		4,854	0
Change in assets and liabilities, net of acquisitions:
Restricted cash		(332)	4,555
Accounts receivable		(3,593)	6,353
Prepaid expenses and other current assets		10,738	(39,813)
Accounts payable		(4,326)	(944)
Accrued merchant and supplier payables		(171,816)	(101,852)
Accrued expenses and other current liabilities		(47,919)	57,214
Other, net		(16,775)	(1,242)
Net cash provided by (used in) operating activities from continuing operations		(171,557)	49,292
Net cash used in operating activities from discontinued operations		0	(36,578)
Net cash provided by (used in) operating activities		(171,557)	12,714
Investing activities
Purchases of property and equipment and capitalized software		(49,215)	(68,481)
Cash Divested from Deconsolidation		(1,128)	(1,404)
Acquisitions of businesses, net of acquired cash		(940)	(70,130)
Payments to Acquire Investments		0	(5,000)
Proceeds from Sale of Investment Projects		1,685	1,231
Settlements of liabilities related to purchase of additional interest in consolidated subsidiary		0	(1,072)
Purchases of intangible assets		(2,121)	(1,156)
Net cash used in investing activities from continuing operations		(51,719)	(146,012)
Net cash used in investing activities from discontinued operations		0	244,470
Net cash used in investing activities		(51,719)	98,458
Financing activities
Proceeds from Lines of Credit		0	195,000
Proceeds from Convertible Debt		250,000	0
Payments of Debt Issuance Costs		(8,097)	0
Payments for Hedge, Financing Activities		59,163
Payments for Derivative Instrument, Financing Activities			0
Proceeds from Issuance of Warrants		35,495	0
Payments for purchases of treasury stock		(115,619)	(329,378)
Taxes paid related to net share settlements of stock-based compensation awards		(23,327)	(34,477)
Proceeds from stock option exercises and employee stock purchase plan		4,976	5,673
Partnership distribution payments to noncontrolling interest holders		(9,151)	(10,954)
Payment of Contingent Consideration		(285)	(382)
Payments of capital lease obligations		(21,961)	(17,670)
Net cash used in financing activities		52,868	(192,188)
Effect of exchange rate changes on cash and cash equivalents		6,793	(27,338)
Net decrease in cash and cash equivalents, including cash classified within current assets held for sale		(163,615)	(108,354)
Less: Increase in cash and cash equivalents classified within current assets held for sale		0	(55,279)
Net decrease in cash and cash equivalents		(163,615)	(53,075)
Cash and cash equivalents, beginning of period		853,362	1,016,634
Cash and cash equivalents, end of period		689,747
Non-cash investing and financing activities
Equipment acquired under capital lease obligations		17,556	40,927
Payments for Tenant Improvements		4,990	0
Liability for Purchases of Treasury Stock		1,041	5,059
Contingent Consideration Liabilities Incurred In Connection With Acquisitions		0	9,605
Accounts payable and accrued expenses related to purchases of property and equipment and capitalized software		2,250	1,500
Noncash or Part Noncash Acquisition, Investments Acquired		0	122,075
Continuing Operations [Member]
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Share-based Compensation			109,200
Discontinued Operations [Member]
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Share-based Compensation			5,300
Investment Type [Member]
Non-cash investing and financing activities
Noncash or Part Noncash Acquisition, Investments Acquired		$ 11,050	0
GroupMax [Member]
Non-cash investing and financing activities
Noncash or Part Noncash Acquisition, Investments Acquired			$ 16,400
[1]	Includes stock-based compensation classified within cost of revenue, marketing expense, selling, general and administrative expense and restructuring charges. Other income (expense), net, includes $0.3 million and $0.7 million of additional stock-based compensation for the three and nine months ended September 30, 2016 and $0.1 million and $0.2 million for the three and nine months ended September 30, 2015.
[2]	Changes in the fair value of contingent consideration liabilities are classified within "Acquisition-related expense (benefit), net" on the condensed consolidated statements of operations.

Description of Business and Bas

Description of Business and Basis of Presentation	9 Months Ended
	Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business and Basis of Presentation	DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION Company Information Groupon, Inc. and subsidiaries (the "Company"), which commenced operations in October 2008, operates online local commerce marketplaces throughout the world that connect merchants to consumers by offering goods and services, generally at a discount. Consumers access those marketplaces through the Company's websites, primarily localized groupon.com sites in many countries, and its mobile applications. The Company's operations are organized into three segments: North America, EMEA, which is comprised of Europe, Middle East and Africa, and the remainder of the Company's international operations ("Rest of World"). See Note 13, "Segment Information." In May 2015, the Company sold a controlling stake in its subsidiary Ticket Monster, Inc. ("Ticket Monster"), an entity based in the Republic of Korea, that resulted in its deconsolidation. The financial results of Ticket Monster, including the gain on disposition and related income tax effects, are presented as discontinued operations in the accompanying condensed consolidated financial statements for the three and nine months ended September 30, 2015 . See Note 2, "Discontinued Operations and Other Dispositions," for additional information. Unaudited Interim Financial Information The Company has prepared the accompanying condensed consolidated financial statements pursuant to the rules and regulations of the Securities and Exchange Commission ("SEC") for interim financial reporting. These condensed consolidated financial statements are unaudited and, in the Company's opinion, include all adjustments, consisting of normal recurring adjustments and accruals, necessary for a fair presentation of the Company's condensed consolidated balance sheets, statements of operations, comprehensive income (loss), cash flows and stockholders' equity for the periods presented. Operating results for the periods presented are not necessarily indicative of the results to be expected for the full year ending December 31, 2016 . Certain information and disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles ("U.S. GAAP") have been omitted in accordance with the rules and regulations of the SEC. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and accompanying notes included in the Company's Annual Report on Form 10-K for the year ended December 31, 2015 , filed with the SEC on February 11, 2016, as amended by the Form 10-K/A for the year ended December 31, 2015 , filed with the SEC on March 30, 2016. Principles of Consolidation The condensed consolidated financial statements include the accounts of the Company and its subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. The Company's condensed consolidated financial statements were prepared in accordance with U.S. GAAP and include the assets, liabilities, revenue and expenses of all wholly-owned subsidiaries and majority-owned subsidiaries over which the Company exercises control and variable interest entities for which the Company has determined that it is the primary beneficiary. Outside stockholders' interests in subsidiaries are shown on the condensed consolidated financial statements as "Noncontrolling interests." Equity investments in entities in which the Company does not have a controlling financial interest are accounted for under the equity method, the cost method, the fair value option or as available-for-sale securities, as appropriate. Adoption of New Accounting Standards The Company adopted the guidance in Accounting Standards Update ("ASU") 2016-09, Compensation - Stock Compensation (Topic 718) - Improvements to Employee Share-Based Payment Accounting , on January 1, 2016. Under this ASU, entities are permitted to make an accounting policy election to either estimate forfeitures on share-based payment awards, as previously required, or to recognize forfeitures as they occur. The Company has elected to recognize forfeitures as they occur and the impact of that change in accounting policy has been recorded as a $3.1 million cumulative effect adjustment to its accumulated deficit as of January 1, 2016. Additionally, ASU 2016-09 requires that all income tax effects related to settlements of share-based payment awards be reported in earnings as an increase or decrease to income tax expense (benefit), net. Previously, income tax benefits at settlement of an award were reported as an increase (or decrease) to additional paid-in capital to the extent that those benefits were greater than (or less than) the income tax benefits reported in earnings during the award's vesting period. The requirement to report those income tax effects in earnings has been applied on a prospective basis to settlements occurring on or after January 1, 2016 and the impact of applying that guidance was not material to the condensed consolidated financial statements for the three and nine months ended September 30, 2016 . ASU 2016-09 also requires that all income tax-related cash flows resulting from share-based payments be reported as operating activities in the statement of cash flows. Previously, income tax benefits at settlement of an award were reported as a reduction to operating cash flows and an increase to financing cash flows to the extent that those benefits exceeded the income tax benefits reported in earnings during the award's vesting period. The Company has elected to apply that change in cash flow classification on a retrospective basis, which has resulted in a $6.2 million increase to net cash provided by operating activities and a corresponding increase to net cash used in financing activities in the accompanying condensed consolidated statement of cash flows for the nine months ended September 30, 2015 , as compared to the amounts previously reported. The remaining provisions of ASU 2016-09 did not have a material impact on the accompanying condensed consolidated financial statements. The Company adopted the guidance in ASU 2015-02, Consolidation (Topic 810) - Amendments to the Consolidation Analysis , on January 1, 2016. This ASU expands the variable interest entity ("VIE") criteria to specifically include limited partnerships in certain circumstances. The adoption of ASU 2015-02 did not have a material impact on the accompanying condensed consolidated financial statements. The Company determined that Monster Holdings LP ("Monster LP") is not a VIE under ASU 2015-02, which is consistent with its conclusion prior to adoption of the ASU. That investment is evaluated as a corporation, rather than a limited partnership, for purposes of making consolidation determinations because its governance structure is akin to a corporation. Under the terms of Monster LP’s amended and restated agreement of limited partnership, all of the objectives and purposes of Monster LP are carried out by a board of directors, rather than a general partner. Reclassifications Certain reclassifications have been made to the condensed consolidated financial statements of prior periods and the accompanying notes to conform to the current period presentation. Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires estimates and assumptions that affect the reported amounts and classifications of assets and liabilities, revenue and expenses, and the related disclosures of contingent liabilities in the condensed consolidated financial statements and accompanying notes. Estimates are utilized for, but not limited to, stock-based compensation, income taxes, valuation of acquired goodwill and intangible assets, investments, customer refunds, contingent liabilities and the useful lives of property, equipment and software and intangible assets. Actual results could differ materially from those estimates.

Discontinued Operations and Oth

Discontinued Operations and Other Dispositions (Notes)	9 Months Ended
	Sep. 30, 2016
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	DISCONTINUED OPERATIONS AND OTHER DISPOSITIONS Discontinued Operations In May 2015, the Company sold a controlling stake in Ticket Monster to an investor group. The Company recognized a pre-tax gain on the disposition of $202.2 million ( $138.0 million net of tax), which represents the excess of (a) the $398.8 million in net consideration received, consisting of (i) $285.0 million in cash proceeds and (ii) the $122.1 million fair value of its retained minority investment, less (iii) $8.3 million in transaction costs, over (b) the sum of (i) the $184.3 million net book value of Ticket Monster upon the closing of the transaction and (ii) Ticket Monster's $12.3 million cumulative translation loss, which was reclassified to earnings. The financial results of Ticket Monster, the gain on disposition and the related income tax effects are reported within discontinued operations in the accompanying condensed consolidated financial statements. The following table summarizes the major classes of line items included in income (loss) from discontinued operations, net of tax, for the nine months ended September 30, 2015 (in thousands): Nine Months Ended (1) Third party and other revenue $ 28,145 Direct revenue 39,065 Third party and other cost of revenue (13,958 ) Direct cost of revenue (38,031 ) Marketing expense (8,495 ) Selling, general and administrative expense (38,102 ) Other income, net 96 Loss from discontinued operations before gain on disposition and provision for income taxes (31,280 ) Gain on disposition 202,158 Provision for income taxes (37,415 ) Income (loss) from discontinued operations, net of tax $ 133,463 (1) The income from discontinued operations, net of tax, for the nine months ended September 30, 2015 includes the results of Ticket Monster through the disposition date of May 27, 2015. The $37.4 million provision for income taxes for the nine months ended September 30, 2015 reflects (i) the $64.2 million current and deferred income tax effects of the Ticket Monster disposition during the second quarter of 2015, partially offset by (ii) a $26.8 million tax benefit that resulted from the recognition of a deferred tax asset related to the excess of the tax basis over the financial reporting basis of the Company's investment in Ticket Monster upon meeting the criteria for held-for-sale classification during the first quarter of 2015. Other Dispositions The gains from the transactions below are presented within "Gains on business dispositions" in the accompanying condensed consolidated statements of operations. The financial results of those entities are presented within income from continuing operations in the accompanying condensed consolidated financial statements through the their respective disposition dates. Those financial results were not material for the three and nine months ended September 30, 2016 and 2015 . Groupon Russia On April 12, 2016, the Company sold its subsidiary in Russia ("Groupon Russia"). The Company recognized a pre-tax gain on the disposition of $8.9 million , consisting of Groupon Russia's $1.6 million negative net book value upon the closing of the transaction and its $7.7 million cumulative translation gain, which was reclassified to earnings, less $0.4 million in transaction costs. The Company did not receive any proceeds in connection with the transaction. Breadcrumb On May 9, 2016, the Company sold its point of sale business ("Breadcrumb") in exchange for a minority investment in the acquirer. See Note 4, " Investments ," for information about this transaction. The Company recognized a pre-tax gain on the disposition of $0.4 million , which represents the excess of (a) $8.2 million in net consideration received, consisting of the $8.3 million fair value of the investment acquired, less $0.1 million in transaction costs, over (b) the $7.8 million net book value of Breadcrumb upon the closing of the transaction. The Company did not receive any cash proceeds in connection with the transaction. Groupon Indonesia On August 5, 2016, the Company sold its subsidiary in Indonesia ("Groupon Indonesia") in exchange for a minority investment in the acquirer. See Note 4, " Investments ," for information about this transaction. The Company recognized a pre-tax gain on the disposition of $2.1 million , which represents the excess of (a) the sum of (i) $2.4 million in net consideration received, consisting of the $2.7 million fair value of the investment acquired, less $0.3 million in transaction costs, and (ii) its $0.2 million cumulative translation loss, which was reclassified to earnings, over (b) the $0.1 million net book value of Groupon Indonesia upon closing of the transaction. The Company did not receive any cash proceeds in connection with the transaction. Groupon India On August 6, 2015, the Company’s subsidiary in India ("Groupon India") completed an equity financing transaction with a third party investor that obtained a majority voting interest in the entity. See Note 5, " Investments ," for information about this transaction. The Company recognized a pre-tax gain on the disposition of $13.7 million , which represents the excess of (a) the sum of (i) $14.2 million in net consideration received, consisting of the $16.4 million fair value of its retained minority investment, less $1.3 million in transaction costs and a $0.9 million guarantee liability and (ii) Groupon India's $0.9 million cumulative translation gain, which was reclassified to earnings, over (b) the $1.4 million net book value of Groupon India upon the closing of the transaction. The Company did not receive any cash proceeds in connection with the transaction.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	GOODWILL AND OTHER INTANGIBLE ASSETS The following table summarizes the Company's goodwill activity by segment for the nine months ended September 30, 2016 (in thousands): North America EMEA Rest of World Consolidated Balance as of December 31, 2015 $ 178,746 $ 92,063 $ 16,523 $ 287,332 Goodwill related to acquisition 671 — — 671 Goodwill related to dispositions (1,260 ) — (324 ) (1,584 ) Foreign currency translation (1 ) 2,593 845 3,437 Balance as of September 30, 2016 $ 178,156 $ 94,656 $ 17,044 $ 289,856 The following tables summarize the Company's intangible assets (in thousands): September 30, 2016 Asset Category Gross Carrying Value Accumulated Amortization Net Carrying Value Subscriber relationships $ 53,402 $ 48,177 $ 5,225 Merchant relationships 9,776 8,609 1,167 Trade names 11,190 8,331 2,859 Developed technology 36,398 29,188 7,210 Brand relationships 7,960 4,267 3,693 Other intangible assets 23,097 17,776 5,321 Total $ 141,823 $ 116,348 $ 25,475 December 31, 2015 Asset Category Gross Carrying Value Accumulated Amortization Net Carrying Value Subscriber relationships $ 52,204 $ 43,725 $ 8,479 Merchant relationships 9,648 8,064 1,584 Trade names 11,013 7,396 3,617 Developed technology 37,103 25,436 11,667 Brand relationships 7,960 3,073 4,887 Other intangible assets 20,638 14,389 6,249 Total $ 138,566 $ 102,083 $ 36,483 Amortization of intangible assets is computed using the straight-line method over their estimated useful lives, which range from 1 to 5 years. Amortization expense related to intangible assets was $4.4 million and $5.2 million for the three months ended September 30, 2016 and 2015 , respectively, and $13.6 million and $15.0 million for the nine months ended September 30, 2016 and 2015 , respectively. As of September 30, 2016 , the Company's estimated future amortization expense related to intangible assets is as follows (in thousands): Remaining amounts in 2016 $ 3,818 2017 11,927 2018 8,057 2019 985 2020 608 Thereafter 80 Total $ 25,475

Investments

Investments	9 Months Ended
	Sep. 30, 2016
Investments, All Other Investments [Abstract]
Investments	INVESTMENTS The following table summarizes the Company's investments (dollars in thousands): September 30, 2016 Percent Ownership of Voting Stock December 31, 2015 Percent Ownership of Voting Stock Available-for-sale securities: Convertible debt securities $ 9,931 $ 10,116 Redeemable preferred shares 17,177 19% to 25% 22,834 17% to 25% Total available-for-sale securities 27,108 32,950 Cost method investments 30,085 2% to 19% 14,561 2% to 10% Fair value option investments 123,424 41% to 45% 130,725 43% to 45% Total investments $ 180,617 $ 178,236 The following table summarizes the amortized cost, gross unrealized gain, gross unrealized loss and fair value of the Company's available-for-sale securities as of September 30, 2016 and December 31, 2015 , respectively (in thousands): September 30, 2016 December 31, 2015 Amortized Cost Gross Unrealized Gain Gross Unrealized Loss (1) Fair Value Amortized Cost Gross Unrealized Gain Gross Unrealized Loss (1) Fair Value Available-for-sale securities: Convertible debt securities $ 8,263 $ 1,704 $ (36 ) $ 9,931 $ 9,234 $ 882 $ — $ 10,116 Redeemable preferred shares 18,375 — (1,198 ) 17,177 22,973 — (139 ) 22,834 Total available-for-sale securities $ 26,638 $ 1,704 $ (1,234 ) $ 27,108 $ 32,207 $ 882 $ (139 ) $ 32,950 (1) Available-for-sale securities with an unrealized loss were in a loss position for less than 12 months. Fair Value Option Investments In connection with the dispositions of Ticket Monster in May 2015 and the Company's subsidiary in India ("Groupon India") in August 2015, the Company obtained a minority limited partner interest in Monster Holdings LP ("Monster LP") and a minority investment in GroupMax Pte Ltd. ("GroupMax"). The investments in Monster LP and GroupMax were measured at their fair values of $122.1 million and $16.4 million , respectively, as of their respective transaction dates. The Company has made an irrevocable election to account for both of these investments at fair value with changes in fair value reported in earnings. The Company elected to apply fair value accounting to these investments because it believes that fair value is the most relevant measurement attribute for these investments, as well as to reduce operational and accounting complexity. As of September 30, 2016 , the Company has measured the fair value of the Monster LP investment primarily using the discounted cash flow method, which is an income approach. Under that method, the first step in determining the fair value of the investment that the Company holds is to estimate the fair value of Monster LP in its entirety. The key inputs to determining the fair value are cash flow forecasts and discount rates. As of September 30, 2016 , the Company applied a discount rate of 21% in its discounted cash flow valuation of Monster LP. The Company also used a market approach valuation technique, which is based on market multiples of guideline companies, in determining the fair value of Monster LP as of September 30, 2016 . The discounted cash flow and market approach valuations are then evaluated and weighted to determine the amount that is most representative of the fair value of the investee. Once the Company has determined the fair value of Monster LP, it then determines the fair value of its specific investment in the entity. Monster LP has a complex capital structure, so the Company applies an option-pricing model that considers the liquidation preferences of the respective classes of ownership interests in Monster LP to determine the fair value of its ownership interest in the entity. The Company recognized gains of $2.3 million and $0.9 million from changes in the fair value of its investment in Monster LP for the three and nine months ended September 30, 2016 , respectively. The following table summarizes the condensed financial information for Monster LP as of September 30, 2015 , for the three months ended September 30, 2015 and for the period from May 28, 2015 through September 30, 2015 (in thousands): Three Months Ended Period from May 28, 2015 through September 30, 2015 (1) Revenue $ 33,465 $ 47,575 Gross profit (6,826 ) (2,488 ) Loss before income taxes (38,425 ) (46,764 ) Net loss (38,485 ) (46,764 ) September 30, 2015 Current assets $ 149,662 Non-current assets 483,108 Current liabilities 223,667 Non-current liabilities 7,038 (1) The summarized financial information is presented for the period beginning May 28, 2015, after completion of the Ticket Monster disposition transaction that resulted in the Company obtaining its minority limited partner interest in Monster LP. As of September 30, 2016 , the Company has measured the fair value of the GroupMax investment primarily using the discounted cash flow method. The key inputs to determining the fair value are cash flow forecasts and discount rates. As of September 30, 2016 , the Company applied a discount rate of 20% in its discounted cash flow valuation of GroupMax. The Company also used a market approach valuation technique, which is based on market multiples of guideline companies, to determine the fair value of GroupMax as of September 30, 2016 . The discounted cash flow and market approach valuations are then evaluated and weighted to determine the amount that is most representative of the fair value of the investee. Once the Company has determined the fair value of GroupMax, it then determines the fair value of its specific investment in the entity. GroupMax has a complex capital structure, so the Company applies an option-pricing model that considers the liquidation preferences of the respective classes of ownership interests in GroupMax to determine the fair value of its ownership interest in the entity. The Company recognized losses of $3.9 million and $8.2 million from changes in the fair value of its investment in GroupMax for the three and nine months ended September 30, 2016 , respectively. As of September 30, 2016 , the Company has an outstanding receivable due from GroupMax with a carrying amount of $1.1 million . Other Investments On May 9, 2016, the Company acquired a 13% minority investment in the preferred stock of a restaurant software provider as consideration for the sale of Breadcrumb. The preferred stock was recorded at its $8.3 million acquisition date fair value and is accounted for as a cost method investment. On August 5, 2016, the Company acquired a 7% minority investment in the preferred stock of a company that connects consumers with fitness, beauty and wellness businesses in Asia, as consideration for the sale of Groupon Indonesia. The preferred stock was recorded at its $2.7 million acquisition date fair value and is accounted for as a cost method investment.

Supplemental Consolidated Balan

Supplemental Consolidated Balance Sheet and Statement of Operations Information	9 Months Ended
	Sep. 30, 2016
SUPPLEMENTAL CONSOLIDATED BALANCE SHEET AND STATEMENT OF OPERATIONS INFORMATION [Abstract]
Supplemental Consolidated Balance Sheets and Statements of Operations Information	SUPPLEMENTAL CONSOLIDATED BALANCE SHEETS AND STATEMENTS OF OPERATIONS INFORMATION The following table summarizes the Company's other income (expense), net for the three and nine months ended September 30, 2016 and 2015 (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Interest income $ 593 $ 331 $ 1,449 $ 888 Interest expense (5,778 ) (783 ) (11,759 ) (1,926 ) Gains (losses), net on changes in fair value of investments (1,594 ) (2,564 ) (7,301 ) (2,114 ) Foreign currency gains (losses), net (1) 234 (5,153 ) 5,362 (22,118 ) Other (483 ) 9 (2,054 ) 124 Other income (expense), net $ (7,028 ) $ (8,160 ) $ (14,303 ) $ (25,146 ) (1) Foreign currency gains (losses), net for the nine months ended September 30, 2016 includes $0.3 million of net cumulative translation gains that were reclassified to earnings as a result of the Company's exit from certain countries as part of its restructuring plan. Refer to Note 9, " Restructuring ," for additional information. Foreign currency gains (losses), net for the nine months ended September 30, 2015 includes a $4.4 million loss related to the cumulative translation adjustment from the Company's legacy business in the Republic of Korea that was reclassified to earnings as a result of the Ticket Monster disposition. The following table summarizes the Company's prepaid expenses and other current assets as of September 30, 2016 and December 31, 2015 (in thousands): September 30, 2016 December 31, 2015 Finished goods inventories $ 38,297 $ 42,305 Prepaid expenses 63,352 49,134 Income taxes receivable 21,967 32,483 VAT receivable 10,100 14,305 Other 11,564 15,478 Total prepaid expenses and other current assets $ 145,280 $ 153,705 The following table summarizes the Company's accrued merchant and supplier payables as of September 30, 2016 and December 31, 2015 (in thousands): September 30, 2016 December 31, 2015 Accrued merchant payables $ 403,779 $ 471,607 Accrued supplier payables (1) 205,160 304,604 Total accrued merchant and supplier payables $ 608,939 $ 776,211 (1) Amounts include payables to suppliers of inventories and providers of shipping and fulfillment services. The following table summarizes the Company's accrued expenses and other current liabilities as of September 30, 2016 and December 31, 2015 (in thousands): September 30, 2016 December 31, 2015 Refunds reserve $ 27,492 $ 35,297 Payroll and benefits 62,904 50,454 Customer credits 32,706 32,293 Restructuring-related liabilities 11,200 11,556 Income taxes payable 10,033 13,885 Deferred revenue 35,873 40,396 Current portion of capital lease obligations 30,435 26,776 Other (1) 143,053 192,067 Total accrued expenses and other current liabilities $ 353,696 $ 402,724 (1) As of December 31, 2015 , Other included a $45.0 million liability for the Company's securities litigation matter (see Note 7, "Commitments and Contingencies" ). Final court approval of the settlement for that matter was granted on July 13, 2016 and the Company's settlement obligation was satisfied during the three months ended September 30, 2016. The following table summarizes the Company's other non-current liabilities as of September 30, 2016 and December 31, 2015 (in thousands): September 30, 2016 December 31, 2015 Long-term tax liabilities $ 53,230 $ 46,506 Capital lease obligations 23,240 30,943 Other 37,134 36,091 Total other non-current liabilities $ 113,604 $ 113,540 The following table summarizes the components of accumulated other comprehensive income (loss) as of September 30, 2016 and December 31, 2015 (in thousands): Foreign currency translation adjustments Unrealized gain (loss) on available-for-sale securities Pension adjustments Total Balance as of December 31, 2015 $ 52,261 $ 458 $ (1,513 ) $ 51,206 Other comprehensive income (loss) before reclassification adjustments (3,183 ) (184 ) 69 (3,298 ) Reclassification adjustments included in net income (loss) (7,776 ) — — (7,776 ) Other comprehensive income (loss) (10,959 ) (184 ) 69 (11,074 ) Balance as of September 30, 2016 $ 41,302 $ 274 $ (1,444 ) $ 40,132

Financing Arrangements (Notes)

Financing Arrangements (Notes)	9 Months Ended
	Sep. 30, 2016
Debt Disclosure [Abstract]
Debt Disclosure [Text Block]	FINANCING ARRANGEMENTS Convertible Senior Notes On April 4, 2016, the Company issued $250.0 million in aggregate principal amount of convertible senior notes (the "Notes") in a private placement to A-G Holdings, L.P. ("Atairos"). The net proceeds from this offering were $243.2 million after deducting issuance costs. The Notes bear interest at a rate of 3.25% per annum, payable annually in arrears on April 1 of each year, beginning on April 1, 2017. The Notes will mature on April 1, 2022, subject to earlier conversion or redemption. Each $1,000 of principal amount of the Notes initially is convertible into 185.1852 shares of Class A common stock, or common stock, as applicable (the "Common Stock"), which is equivalent to an initial conversion price of $5.40 per share, subject to adjustment upon the occurrence of specified events. Upon conversion, the Company can elect to settle the conversion value in cash, shares of its Common Stock, or any combination of cash and shares of its Common Stock. Holders of the Notes may convert their Notes at their option at any time until the close of business on the scheduled trading day immediately preceding the maturity date. In addition, if specified corporate events occur prior to the maturity date, the Company may be required to increase the conversion rate for holders who elect to convert based on the effective date of such event and the applicable stock price attributable to the event, as set forth in a table contained in the indenture governing the Notes (the "Indenture"). With certain exceptions, upon a fundamental change (as defined in the Indenture), the holders of the Notes may require the Company to repurchase all or a portion of their Notes for cash at a purchase price equal to the principal amount plus accrued and unpaid interest. In addition, the Company may redeem the Notes, at its option, at a purchase price equal to the principal amount plus accrued and unpaid interest on or after April 1, 2020, if the closing sale price of the Common Stock exceeds 150% of the then-current conversion price for 20 or more trading days in the 30 consecutive trading day period preceding the Company’s exercise of this redemption right. The Notes are senior unsecured obligations of the Company that rank equal in right of payment to all senior unsecured indebtedness of the Company and rank senior in right of payment to any indebtedness that is contractually subordinated to the Notes. The Indenture includes customary events of default. If an event of default, as defined in the Indenture, occurs and is continuing, the principal amount of the Notes and any accrued and unpaid interest may be declared immediately due and payable. In the case of bankruptcy or insolvency, the principal amount of the Notes and any accrued and unpaid interest would automatically become immediately due and payable. The Company has separated the Notes into their liability and equity components in the accompanying condensed consolidated balance sheet. The carrying amount of the liability component was calculated by measuring the fair value of a similar liability that does not have an associated conversion feature. The carrying amount of the equity component, representing the conversion option, was determined by deducting the fair value of the liability component from the principal amount of the Notes. The difference between the principal amount of the Notes and the liability component (the "debt discount") is amortized to interest expense at an effective interest rate of 9.75% over the term of the Notes. The equity component of the Notes is included in additional paid-in capital in the condensed consolidated balance sheet and is not remeasured as long as it continues to meet the conditions for equity classification. The Company incurred transaction costs of approximately $6.8 million related to the issuance of the Notes. Those transaction costs have been allocated to the liability and equity components in the same manner as the allocation of the proceeds from the Notes. Transaction costs attributable to the liability component of $4.8 million were recorded as a debt discount in the condensed consolidated balance sheet and are being amortized to interest expense over the term of the Notes. Transaction costs attributable to the equity component of $2.0 million were recorded in stockholders' equity as a reduction of the equity component. The carrying amount of the Notes consisted of the following (in thousands): September 30, 2016 Liability component: Principal amount $ 250,000 Less: debt discount (73,527 ) Net carrying amount of liability component $ 176,473 Net carrying amount of equity component $ 67,329 The estimated fair value of the Notes as of September 30, 2016 was $298.0 million and was determined using a lattice model. The Company classified the fair value of the Notes as a Level 3 measurement due to the lack of observable market data over fair value inputs such as its stock price volatility over the term of the Notes and its cost of debt. As of September 30, 2016 , the remaining term of the Notes is approximately 5 years, 6 months . During the three and nine months ended September 30, 2016 , the Company recognized interest expense on the Notes as follows (in thousands): Three Months Ended September 30, 2016 Nine Months Ended September 30, 2016 Contractual interest expense based on 3.25% of the principal amount per annum $ 2,032 $ 4,063 Amortization of debt discount 2,458 4,854 Total interest expense $ 4,490 $ 8,917 Note Hedges and Warrants On May 9, 2016, the Company purchased convertible note hedges with respect to its Common Stock for a cost of $59.1 million from certain bank counterparties. The convertible note hedges provide the Company with the right to purchase up to 46.3 million shares of the Company's Common Stock at an initial strike price of $5.40 per share, which corresponds to the initial conversion price of the Notes, and are exercisable by the Company upon conversion of the Notes. The convertible note hedges are intended to reduce the potential economic dilution upon conversion of the Notes. The convertible note hedges are separate transactions and are not part of the terms of the Notes. Holders of the Notes do not have any rights with respect to the convertible note hedges. On May 9, 2016, the Company also sold warrants for total cash proceeds of $35.5 million to certain bank counterparties. The warrants provide the counterparties with the right to purchase up to 46.3 million shares of the Company's Common Stock at a strike price of $8.50 per share. The warrants expire on various dates between July 1, 2022 and August 26, 2022 and are exercisable on their expiration dates. The warrants are separate transactions and are not part of the terms of the Notes or convertible note hedges. Holders of the Notes and convertible note hedges do not have any rights with respect to the warrants. The amounts paid and received for the convertible note hedges and warrants have been recorded in additional paid-in capital in the condensed consolidated balance sheet as of September 30, 2016 . The convertible note hedges and warrants are not remeasured as long as they continue to meet the conditions for equity classification. The amounts paid for the convertible note hedges are tax deductible over the term of the Notes, while the proceeds received from the warrants are not taxable. Under the if-converted method, the shares of common stock underlying the conversion option in the Notes are included in the diluted earnings per share denominator and the interest expense on the Notes, net of tax, is added to the numerator. However, upon conversion, there will be no economic dilution from the Notes, as exercise of the convertible note hedges eliminates any dilution from the Notes that would have otherwise occurred when the price of the Company’s Common Stock exceeds the conversion price. Taken together, the purchase of the convertible note hedges and sale of warrants are intended to offset any actual dilution from the conversion of these Notes and to effectively increase the overall conversion price from $5.40 to $8.50 per share. Based on the closing price of the Company's Common Stock of $5.15 on September 30, 2016 , the if-converted value of the Notes was less than the principal amount. Revolving Credit Agreement On June 29, 2016, the Company amended and restated its senior secured revolving credit agreement (the "Amended and Restated Credit Agreement") that provides for aggregate principal borrowings of up to $250.0 million and matures in June 2019. The Amended and Restated Credit Agreement replaced the Company's previous $250.0 million credit agreement that was scheduled to mature in August 2017 (the "Original Credit Agreement"). Borrowings under the Amended and Restated Credit Agreement bear interest, at the Company's option, at a rate per annum equal to the Alternate Base Rate or Adjusted LIBO Rate (each as defined in the Amended and Restated Credit Agreement) plus an additional margin ranging between 0.50% and 2.25% . The Company is required to pay quarterly commitment fees ranging from 0.25% to 0.40% per annum of the average daily amount of unused commitments available under the Amended and Restated Credit Agreement. The Amended and Restated Credit Agreement also provides for the issuance of up to $45.0 million in letters of credit, provided that the sum of outstanding borrowings and letters of credit do not exceed the maximum funding commitment of $250.0 million . The Amended and Restated Credit Agreement is secured by substantially all of the Company's and its subsidiaries' tangible and intangible assets, including a pledge of 100% of the outstanding capital stock of substantially all of its direct and indirect domestic subsidiaries and 65% of the shares or equity interests of first-tier foreign subsidiaries and each U.S. entity whose assets substantially consist of capital stock and/or intercompany debt of one or more foreign subsidiaries, subject to certain exceptions. Certain of the Company's domestic subsidiaries are guarantors under the Amended and Restated Credit Agreement. The Amended and Restated Credit Agreement contains various customary restrictive covenants that limit the Company's ability to, among other things: incur additional indebtedness; make dividend and other restricted payments, including share repurchases; enter into sale or leaseback transactions; make investments, loans or advances; grant or incur liens on assets; sell assets; engage in mergers, consolidations, liquidations or dissolutions; and engage in transactions with affiliates. The Amended and Restated Credit Agreement requires the Company to maintain compliance with specified financial covenants, comprised of a minimum fixed charge coverage ratio, a maximum leverage ratio, a maximum senior secured indebtedness ratio and a minimum liquidity ratio, each as set forth in the Amended and Restated Credit Agreement. The Company is also required to maintain, as of the last day of each fiscal quarter, unrestricted cash of at least $400.0 million , including $200.0 million in accounts held with lenders under the Amended and Restated Credit Agreement or their affiliates. Non-compliance with these covenants may result in termination of the commitments under the Amended and Restated Credit Agreement and any then outstanding borrowings may be declared due and payable immediately. The Company has the right to terminate the Amended and Restated Credit Agreement or reduce the available commitments at any time. As of September 30, 2016 and December 31, 2015 , the Company had no borrowings under the Amended and Restated Credit Agreement or the Original Credit Agreement, respectively, and was in compliance with all covenants. As of September 30, 2016 and December 31, 2015 , the Company had outstanding letters of credit of $11.4 million and $11.6 million , respectively, under the Amended and Restated Credit Agreement and the Original Credit Agreement.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES The Company's commitments as of September 30, 2016 did not materially change from the amounts set forth in the Company's 2015 Annual Report on Form 10-K. Legal Matters and Other Contingencies From time to time, the Company is party to various legal proceedings incident to the operation of its business. For example, the Company is currently involved in proceedings brought by former employees and merchants, intellectual property infringement suits and suits by customers (individually or as class actions) alleging, among other things, violations of the Credit Card Accountability, Responsibility and Disclosure Act and state laws governing gift cards, stored value cards and coupons. The following is a brief description of significant legal proceedings. The Company was a defendant in a proceeding pursuant to which, on October 29, 2012, a consolidated amended class action complaint was filed against the Company, certain of its directors and officers, and the underwriters that participated in the initial public offering of the Company's Class A common stock. The case was pending before the United States District Court for the Northern District of Illinois: In re Groupon, Inc. Securities Litigation . In the first quarter of 2016, the parties entered into a term sheet to settle the litigation that provides for a settlement payment to the class of $45.0 million in cash, including plaintiff’s attorneys’ fees, in exchange for a full and final release and also includes a denial of liability or any wrongdoing by the Company and the other defendants. On April 7, 2016, the Court entered an order preliminarily approving the settlement. On April 21, 2016, a $45.0 million settlement payment was made into an escrow account. On July 13, 2016, the Court entered an order providing final approval of the settlement and final judgment, dismissing the action with prejudice. The Company derecognized its liability for the matter and its related asset for the amount previously funded into the escrow account at that time. Federal and state purported stockholder derivative lawsuits have been filed against certain of the Company's current and former directors and officers. The federal purported stockholder derivative lawsuit was originally filed in April 2012, and a consolidated stockholder derivative complaint, filed on July 30, 2012, is currently pending in the United States District Court for the Northern District of Illinois: In re Groupon Derivative Litigation . The state derivative cases are currently pending before the Chancery Division of the Circuit Court of Cook County, Illinois: Orrego v. Lefkofsky, et al., was filed on April 5, 2012; and Kim v. Lefkofsky, et al., was filed on May 25, 2012. In the first quarter of 2016, the parties reached an agreement in principle to settle the litigation. The agreement, which is subject to court approval, provides that the Company will implement certain corporate reforms. On September 19, 2016, the parties participated in a mediation regarding a reasonable plaintiffs’ attorneys’ fee award to be paid as part of the settlement. The parties did not reach agreement and continue to negotiate that aspect of the settlement. In 2010, the Company was named as a defendant in a series of class actions that were consolidated in the U.S. District Court for the Southern District of California. The consolidated actions are referred to as In re Groupon Marketing and Sales Practices Litigation . In July 2015, the parties reached an agreement in principle regarding a settlement involving a combination of cash and Groupon credits, worth a total of $8.5 million . On March 23, 2016, the district court granted final approval of the settlement over various objections posed by two individuals and entered judgment pursuant to the settlement. In April 2016, the two individuals who had objected filed notices of appeal with the Ninth Circuit Court of Appeals. One appeal challenged the district court’s approval of the class action settlement; the other appeal challenged the district court’s denial of the objector’s request for an award of attorney’s fees. The appeal challenging the approval of the settlement was dismissed on June 23, 2016, and the settlement became final and non-appealable as of that date. The case was dismissed with prejudice and settlement claims are being validated and processed. The Company was fully reserved for the settlement amount as of September 30, 2016 and December 31, 2015. On March 2, 2016, International Business Machines Corporation ("IBM") filed a complaint in the United States District Court for the District of Delaware against the Company. In the complaint, IBM alleges that the Company has infringed and continues 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. On May 9, 2016, the Company filed a complaint in the United States District Court for the Northern District of Illinois against IBM. The Company alleges that IBM has infringed and continues to willfully infringe one of the Company’s patents relating to location-based services. The Company intends to seek damages and injunctive relief for IBM’s infringement of this patent. IBM filed a motion to dismiss this case, and the court has yet to rule on that motion. Further, the Company plans to vigorously defend against the claims filed by IBM. In addition, other third parties have from time to time claimed, and others may claim in the future, that the Company has infringed their intellectual property rights. The Company is subject to intellectual property disputes, including patent infringement claims, and expects that it will increasingly be subject to intellectual property infringement claims as its services expand in scope and complexity. The Company has in the past litigated such claims, and the Company is presently involved in several patent infringement and other intellectual property-related claims, including pending litigation or trademark disputes, some of which could involve potentially substantial claims for damages. The Company may also become more vulnerable to third party claims as laws such as the Digital Millennium Copyright Act are interpreted by the courts, and as the Company becomes subject to laws in jurisdictions where the underlying laws with respect to the potential liability of online intermediaries are either unclear or less favorable. The Company believes that additional lawsuits alleging that it has violated patent, copyright or trademark laws will be filed against it. Intellectual property claims, whether meritorious or not, are time consuming and costly to resolve, could require expensive changes in the Company's methods of doing business, or could require it to enter into costly royalty or licensing agreements. The Company is also subject to, or in the future may become subject to, a variety of regulatory inquiries across the jurisdictions where the Company conducts its business, including, for example, inquiries related to consumer protection, employment matters and/or hiring practices, marketing practices, tax, unclaimed property and privacy rules and regulations. Any regulatory actions against the Company, whether meritorious or not, could be time consuming, result in costly litigation, damage awards, injunctive relief or increased costs of doing business through adverse judgment or settlement, require the Company to change its business practices in expensive ways, require significant amounts of management time, result in the diversion of significant operational resources or otherwise harm the Company's business. The Company establishes an accrued liability for loss contingencies related to legal and regulatory matters when the loss is both probable and estimable. These accruals represent management's best estimate of probable losses and, in such cases, there may be an exposure to loss in excess of the amounts accrued. For certain of the matters described above, there are inherent and significant uncertainties based on, among other factors, the stage of the proceedings, developments in the applicable facts of law, or the lack of a specific damage claim. However, the Company believes that the amount of reasonably possible losses in excess of the amounts accrued for these matters would not have a material adverse effect on its business, consolidated financial position, results of operations or cash flows. The Company's accrued liabilities for loss contingencies related to legal and regulatory matters may change in the future as a result of new developments, including, but not limited to, the occurrence of new legal matters, changes in the law or regulatory environment, adverse or favorable rulings, newly discovered facts relevant to the matter, or changes in the strategy for the matter. Regardless of the outcome, litigation can have an adverse impact on the Company because of defense and settlement costs, diversion of management resources and other factors. Indemnifications In the normal course of business to facilitate transactions related to its operations, the Company indemnifies certain parties, including employees, lessors, service providers and merchants, with respect to various matters. The Company has agreed to hold certain parties harmless against losses arising from a breach of representations or covenants, or other claims made against those parties. These agreements may limit the time within which an indemnification claim can be made and the amount of the claim. The Company is also subject to increased exposure to various claims as a result of its acquisitions, particularly in cases where the Company is entering into new businesses in connection with such acquisitions. The Company may also become more vulnerable to claims as it expands the range and scope of its services and is subject to laws in jurisdictions where the underlying laws with respect to potential liability are either unclear or less favorable. In addition, the Company has entered into indemnification agreements with its officers, directors and underwriters, and the Company's bylaws contain similar indemnification obligations that cover officers, directors, employees and other agents. It is not possible to determine the maximum potential amount under these indemnification agreements due to the limited history of prior indemnification claims and the unique facts and circumstances involved in each particular agreement. Historically, any payments that the Company has made under these agreements have not had a material impact on the operating results, financial position or cash flows of the Company.

Stockholders' Equity and Compen

Stockholders' Equity and Compensation Arrangements Stockholders' Equity and Compensation Arrangements (Note)	9 Months Ended
	Sep. 30, 2016
Stockholders' Equity Note [Abstract]
Stockholders' Equity and Compensation Arrangements	STOCKHOLDERS' EQUITY AND COMPENSATION ARRANGEMENTS Common Stock The Company's certificate of incorporation, as amended and restated, authorizes three classes of common stock: Class A common stock, Class B common stock and common stock. No shares of common stock will be issued or outstanding until October 31, 2016, at which time all outstanding shares of Class A common stock and Class B common stock will automatically convert into shares of common stock. In addition, the Company's certificate of incorporation authorizes shares of undesignated preferred stock, the rights, preferences and privileges of which may be designated from time to time by the Board of Directors (the "Board"). Share Repurchase Program The Board previously authorized the Company to repurchase up to $500.0 million of its Class A common stock through August 2017 under its current share repurchase program. In April 2016, the Board approved an increase of $200.0 million to its share repurchase program and an extension of the program through April 2018. During the three and nine months ended September 30, 2016 , the Company purchased 5,213,778 and 30,829,948 shares, respectively, for an aggregate purchase price of $24.6 million and $112.5 million (including fees and commissions) under that program. As of September 30, 2016 , up to $244.7 million of Class A common stock remained available for purchase under that program. The timing and amount of any share repurchases are determined based on market conditions, share price and other factors, and the program may be discontinued or suspended at any time. Groupon, Inc. Stock Plans The Groupon, Inc. Stock Plans (the "Plans") are administered by the Compensation Committee of the Board, which determines the number of awards to be issued, the corresponding vesting schedule and the exercise price for options. As of September 30, 2016 , 79,071,218 shares were available for future issuance under the Plans. The Company recognized stock-based compensation expense from continuing operations of $26.4 million and $35.6 million for the three months ended September 30, 2016 and 2015 , respectively, and $94.8 million and $109.2 million for the nine months ended September 30, 2016 and 2015 , respectively, related to stock awards issued under the Plans and acquisition-related awards. The Company recognized stock-based compensation expense from discontinued operations of $5.3 million for the nine months ended September 30, 2015 . The Company also capitalized $2.3 million and $2.8 million of stock-based compensation for the three months ended September 30, 2016 and 2015 , respectively, and $7.3 million and $9.2 million of stock-based compensation for the nine months ended September 30, 2016 and 2015 , respectively, in connection with internally-developed software. As of September 30, 2016 , a total of $124.8 million of unrecognized compensation costs related to unvested employee stock awards and unvested acquisition-related awards are expected to be recognized over a remaining weighted-average period of 1.00 year . Employee Stock Purchase Plan The Company is authorized to grant up to 10,000,000 shares of common stock under its employee stock purchase plan ("ESPP"). For the nine months ended September 30, 2016 and 2015 , 1,669,782 and 1,037,198 shares of common stock were issued under the ESPP, respectively. Stock Options The table below summarizes the stock option activity for the nine months ended September 30, 2016 : Options Weighted- Average Exercise Price Weighted- Average Remaining Contractual Term (in years) Aggregate Intrinsic Value (1) Outstanding at December 31, 2015 1,584,832 $ 0.95 3.96 $ 3,360 Exercised (490,283 ) 1.26 Forfeited (100,977 ) 0.86 Outstanding and exercisable at September 30, 2016 993,572 $ 0.78 3.09 $ 4,342 (1) The aggregate intrinsic value of options outstanding and exercisable represents the total pretax intrinsic value (the difference between the fair value of the Company's stock on the last day of each period and the exercise price, multiplied by the number of options where the fair value exceeds the exercise price) that would have been received by the option holders had all option holders exercised their options as of September 30, 2016 and December 31, 2015 , respectively. Restricted Stock Units The restricted stock units granted under the Plans generally have vesting periods between one and four years. Restricted stock units are generally amortized on a straight-line basis over the requisite service period, except for restricted stock units with performance conditions and ratable vesting, which are amortized using the accelerated method. In May 2015, 575,744 restricted stock units previously granted to Ticket Monster employees were modified to permit continued vesting following the Company’s sale of its controlling stake in Ticket Monster. These nonemployee restricted stock units, which require ongoing employment with Ticket Monster to vest, are remeasured to fair value each reporting period. As of September 30, 2016 , 194,522 nonemployee restricted stock units were outstanding. The table below summarizes activity regarding unvested restricted stock units granted under the Plans for the nine months ended September 30, 2016 : Restricted Stock Units Weighted- Average Grant Date Fair Value (per share) Unvested at December 31, 2015 39,143,509 $ 6.53 Granted 17,163,910 $ 3.73 Vested (17,667,674 ) $ 6.02 Forfeited (9,681,219 ) $ 6.53 Unvested at September 30, 2016 28,958,526 $ 5.19 Restricted Stock Awards The Company has granted restricted stock awards in connection with business combinations. Compensation expense on these awards is recognized on a straight-line basis over the requisite service periods, which extend through January 2018. The table below summarizes activity regarding unvested restricted stock for the nine months ended September 30, 2016 : Restricted Stock Awards Weighted- Average Grant Date Fair Value (per share) Unvested at December 31, 2015 1,908,408 $ 5.72 Granted — $ — Vested (492,422 ) $ 7.42 Forfeited (196,968 ) $ 7.42 Unvested at September 30, 2016 1,219,018 $ 4.76 Performance Share Units During the nine months ended September 30, 2016 , the Company granted 389,046 performance share units to certain key employees. The vesting of these awards into shares of the Company’s Class A common stock is contingent upon the Company’s achievement of specified financial and operational targets for the year ended December 31, 2016 and is subject to continued employment through the performance period. The weighted-average grant date fair value of the performance share units was $3.78 per share. There were no shares vested or forfeited during the nine months ended September 30, 2016 .

Restructuring (Notes)

Restructuring (Notes)	9 Months Ended
	Sep. 30, 2016
Restructuring and Related Activities [Abstract]
Restructuring	RESTRUCTURING In September 2015, the Company commenced a restructuring plan relating primarily to workforce reductions in its international operations. The Company has also undertaken workforce reductions in its North America segment. In addition to workforce reductions in its ongoing markets, the Company has ceased operations in six countries within its Rest of World segment and 11 countries within its EMEA segment as part of the restructuring plan, including four countries within its EMEA segment that were exited during the nine months ended September 30, 2016 . The total revenue and net loss for the countries exited under the restructuring plan were $11.2 million and $2.2 million , respectively, for the three months ended September 30, 2015 . The total revenue and net loss for the countries exited under the restructuring plan were $39.5 million and $8.0 million , respectively, for the nine months ended September 30, 2015 . The total revenue and net loss for the countries exited under the restructuring plan for the nine months ended September 30, 2016 were not material. Costs related to the restructuring plan are classified as “Restructuring charges” on the condensed consolidated statements of operations. From the inception of its restructuring plan in September 2015 through September 30, 2016 , the Company has incurred cumulative costs for employee severance and benefits and other exit costs of $52.2 million under the plan. In addition to those costs, the Company has incurred cumulative long-lived asset impairment charges of $7.3 million resulting from its restructuring activities. Management continues to explore potential further restructuring actions in connection with its efforts to optimize the Company’s cost structure and global footprint. The following table summarizes the costs incurred by segment related to the Company’s restructuring plan for the three months ended September 30, 2016 (in thousands): Three Months Ended September 30, 2016 Employee Severance and Benefit Costs (1) Other Exit Costs Total Restructuring Charges North America $ 274 $ 695 $ 969 EMEA (412 ) 224 (188 ) Rest of World 580 98 678 Consolidated $ 442 $ 1,017 $ 1,459 (1) The employee severance and benefit costs for the three months ended September 30, 2016 relates to the termination of approximately 150 employees. Substantially all of the remaining cash payments for those costs are expected to be disbursed through June 30, 2017. The following table summarizes the costs incurred by segment related to the Company’s restructuring plan for the nine months ended September 30, 2016 (in thousands): Nine Months Ended September 30, 2016 Employee Severance and Benefit Costs (1) Asset Impairments Other Exit Costs Total Restructuring Charges North America $ 6,487 $ 45 $ 2,862 $ 9,394 EMEA 15,417 — 553 15,970 Rest of World 4,301 — 323 4,624 Consolidated $ 26,205 $ 45 $ 3,738 $ 29,988 (1) The employee severance and benefit costs for the nine months ended September 30, 2016 relates to the termination of approximately 900 employees. Substantially all of the remaining cash payments for those costs are expected to be disbursed through December 31, 2017. The following table summarizes the costs incurred by segment related to the Company’s restructuring plan for the three and nine months ended September 30, 2015 (in thousands): Three and Nine Months Ended September 30, 2015 Employee Severance and Benefit Costs (1) Asset Impairments Other Exit Costs Total Restructuring Charges North America $ 890 $ — $ 511 $ 1,401 EMEA 19,652 — 83 19,735 Rest of World 2,017 345 648 3,010 Consolidated $ 22,559 $ 345 $ 1,242 $ 24,146 (1) The employee severance and benefit costs for the three and nine months ended September 30, 2015 related to the termination of approximately 1,200 employees. The following table summarizes restructuring liability activity for the nine months ended September 30, 2016 (in thousands): Employee Severance and Benefit Costs Other Exit Costs Total Balance as of December 31, 2015 $ 9,017 $ 2,539 $ 11,556 Charges payable in cash (1) 21,520 3,739 25,259 Cash payments (20,268 ) (5,583 ) (25,851 ) Foreign currency translation 223 13 236 Balance as of September 30, 2016 $ 10,492 $ 708 $ 11,200 (1) Excludes stock-based compensation of $4.7 million related to accelerated vesting of stock-based compensation awards for certain employees terminated as a result of the Company's restructuring activities for the nine months ended September 30, 2016 .

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES The Company's tax provision for interim periods is determined using an estimate of its annual effective tax rate, adjusted for discrete items. For the three months ended September 30, 2016 , the Company recorded income tax expense from continuing operations of $2.1 million on a pre-tax loss from continuing operations of $33.7 million . For the three months ended September 30, 2015 , the Company recorded an income tax benefit from continuing operations of $54.0 million on a pre-tax loss from continuing operations of $78.6 million . For the nine months ended September 30, 2016 , the Company recorded income tax expense from continuing operations of $1.6 million on a pre-tax loss from continuing operations of $131.5 million . For the nine months ended September 30, 2015 , the Company recorded an income tax benefit from continuing operations of $42.9 million on a pre-tax loss from continuing operations of $99.5 million . The Company's U.S. statutory rate is 35% . The primary factor impacting the effective tax rate for the three and nine months ended September 30, 2016 was the pre-tax losses incurred by the Company's operations in jurisdictions that have valuation allowances against their net deferred tax assets, including the United States. Significant factors impacting the effective tax rate for the three and nine months ended September 30, 2015 included pre-tax losses incurred by the Company's operations in certain foreign jurisdictions that had valuation allowances against their net deferred tax assets, from continuing operations in jurisdictions that the Company was not able to benefit due to uncertainty as to the realization of those losses, amortization of the tax effects of intercompany sales of intellectual property, nondeductible stock-based compensation expense and decreases in liabilities for uncertain tax positions. The Company expects that its consolidated effective tax rate in future periods will continue to differ significantly from the U.S. federal income tax rate as a result of its tax obligations in jurisdictions with profits and valuation allowances in jurisdictions with losses. The Company is currently undergoing income tax audits in multiple jurisdictions. There are many factors, including factors outside of the Company's control, which influence the progress and completion of those audits. As of September 30, 2016 , the Company believes that it is reasonably possible that changes of up to $24.9 million in unrecognized tax benefits may occur within the next 12 months upon closing of income tax audits or the expiration of applicable statutes of limitations. See Note 2, "Discontinued Operations and Other Dispositions," for discussion of the income tax benefit from discontinued operations for the nine months ended September 30, 2015 .

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2016
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENTS Fair value is defined under U.S. GAAP as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. As such, fair value is a market-based measurement that is determined based on assumptions that market participants would use in pricing an asset or a liability. To increase the comparability of fair value measures, the following hierarchy prioritizes the inputs in valuation methodologies used to measure fair value: Level 1 - Measurements that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets. Level 2 - Measurements that include other inputs that are directly or indirectly observable in the marketplace. Level 3 - Measurements derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable. These fair value measurements require significant judgment. In determining fair value, the Company uses various valuation approaches within the fair value measurement framework. The valuation methodologies used for the Company's assets and liabilities measured at fair value and their classification in the valuation hierarchy are summarized below: Cash equivalents - Cash equivalents primarily consist of AAA-rated money market funds. The Company classified cash equivalents as Level 1 due to the short-term nature of these instruments and measured the fair value based on quoted prices in active markets for identical assets. Fair value option and available-for-sale securities investments - See Note 4, " Investments ," for discussion of the valuation methodologies used to measure the fair value of the Company's investments in Monster LP and GroupMax. The Company measures the fair value of those investments using the discounted cash flow method, which is an income approach, and the market approach. The Company also has investments in redeemable preferred shares and convertible debt securities issued by nonpublic entities. The Company measures the fair value of those available-for-sale securities using the discounted cash flow method. The Company has classified its fair value option investments and its investments in available-for-sale securities as Level 3 due to the lack of observable market data over fair value inputs such as cash flow projections and discount rates. Increases in projected cash flows and decreases in discount rates contribute to increases in the estimated fair values of the fair value option investments and available-for-sale securities, whereas decreases in projected cash flows and increases in discount rates contribute to decreases in their fair values. Contingent consideration - The Company has contingent obligations to transfer cash to the former owners of acquired businesses if specified financial results are met over future reporting periods (i.e., earn-outs). Liabilities for contingent consideration are measured at fair value each reporting period, with the acquisition-date fair value included as part of the consideration transferred and subsequent changes in fair value are recorded in earnings within "Acquisition-related expense (benefit), net" on the condensed consolidated statements of operations. The Company uses an income approach to value contingent consideration obligations based on future financial performance, which is determined based on the present value of probability-weighted future cash flows. The Company has classified the contingent consideration liabilities as Level 3 due to the lack of relevant observable market data over fair value inputs such as probability-weighting of payment outcomes. Increases in the assessed likelihood of a higher payout under a contingent consideration arrangement contribute to increases in the fair value of the related liability. Conversely, decreases in the assessed likelihood of a higher payout under a contingent consideration arrangement contribute to decreases in the fair value of the related liability. Changes in assumptions could have an impact on the payout of contingent consideration arrangements with a maximum payout of $16.0 million . The following tables summarize the Company's assets and liabilities that are measured at fair value on a recurring basis (in thousands): Fair Value Measurement at Reporting Date Using Description September 30, 2016 Quoted Prices in Active Markets for Significant Other Significant Assets: Cash equivalents $ 237,070 $ 237,070 $ — $ — Fair value option investments 123,424 — — 123,424 Available-for-sale securities: Convertible debt securities 9,931 — — 9,931 Redeemable preferred shares 17,177 — — 17,177 Liabilities: Contingent consideration 14,626 — — 14,626 Fair Value Measurement at Reporting Date Using Description December 31, 2015 Quoted Prices in Active Markets for Significant Other Significant Assets: Cash equivalents $ 305,179 $ 305,179 $ — $ — Fair value option investments 130,725 — — 130,725 Available-for-sale securities: Convertible debt securities 10,116 — — 10,116 Redeemable preferred shares 22,834 — — 22,834 Liabilities: Contingent consideration 10,781 — — 10,781 The following table provides a roll-forward of the fair value of recurring Level 3 fair value measurements for the three and nine months ended September 30, 2016 and 2015 (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Assets Fair value option investments: Beginning Balance $ 125,018 $ 122,525 $ 130,725 $ — Acquisition of investments — 16,400 — 138,475 Total gains (losses) included in earnings (1,594 ) (2,564 ) (7,301 ) (2,114 ) Ending Balance $ 123,424 $ 136,361 $ 123,424 $ 136,361 Unrealized gains (losses) still held (1) $ (1,594 ) $ (2,564 ) $ (7,301 ) $ (2,114 ) Available-for-sale securities Convertible debt securities: Beginning Balance $ 10,573 $ 8,026 $ 10,116 $ 2,527 Purchase of convertible debt security — — — 5,000 Sale of convertible debt security (1,685 ) — (1,685 ) — Total gains (losses) included in other comprehensive income 566 (362 ) 786 (50 ) Total gains (losses) included in other income (expense), net (2) 477 218 714 405 Ending Balance $ 9,931 $ 7,882 $ 9,931 $ 7,882 Unrealized gains (losses) still held (1) $ 1,043 $ (144 ) $ 1,500 $ 355 Redeemable preferred shares: Beginning Balance $ 22,343 $ 4,881 $ 22,834 $ 4,910 Total gains (losses) included in other comprehensive income (loss) (592 ) 53 (1,083 ) 24 Transfer to cost method investment classification upon elimination of redemption feature (4,574 ) — (4,574 ) — Ending Balance $ 17,177 $ 4,934 $ 17,177 $ 4,934 Unrealized (losses) gains still held (1) $ (592 ) $ 53 $ (1,083 ) $ 24 Liabilities Contingent Consideration: Beginning Balance $ 14,788 $ 233 $ 10,781 $ 1,983 Issuance of contingent consideration in connection with acquisitions — 9,605 — 9,605 Settlements of contingent consideration liabilities — — — (716 ) Reclass to non-fair value liabilities when no longer contingent — — (285 ) (331 ) Total losses (gains) included in earnings (3) (162 ) 435 4,130 (268 ) Ending Balance $ 14,626 $ 10,273 $ 14,626 $ 10,273 Unrealized losses (gains) still held (1) $ (162 ) $ 435 $ 4,004 $ (656 ) (1) Represents the unrealized losses or gains recorded in earnings and/or other comprehensive income (loss) during the period for assets and liabilities classified as Level 3 that are still held (or outstanding) at the end of the period. (2) Represents accretion of interest income and changes in the fair value of an embedded derivative. (3) Changes in the fair value of contingent consideration liabilities are classified within "Acquisition-related expense (benefit), net" on the condensed consolidated statements of operations. Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis Certain assets and liabilities are measured at fair value on a nonrecurring basis, including assets that are written down to fair value as a result of an impairment. The Company did not record any significant nonrecurring fair value measurements after initial recognition for the three and nine months ended September 30, 2016 and 2015 . Estimated Fair Value of Financial Assets and Liabilities Not Measured at Fair Value The following table presents the carrying amounts and fair values of financial instruments that are not carried at fair value in the consolidated financial statements (in thousands): September 30, 2016 December 31, 2015 Carrying Amount Fair Value Carrying Amount Fair Value Cost method investments $ 30,085 $ 32,632 $ 14,561 $ 15,922 The fair values of the Company's cost method investments were determined using the market approach or the income approach, depending on the availability of fair value inputs such as financial projections for the investees and market multiples for comparable companies. The Company has classified the fair value measurements of its cost method investments as Level 3 measurements within the fair value hierarchy because they involve significant unobservable inputs such as cash flow projections and discount rates. The Company's other financial instruments not carried at fair value consist primarily of accounts receivable, restricted cash, accounts payable, accrued merchant and supplier payables and accrued expenses. The carrying values of these assets and liabilities approximate their respective fair values as of September 30, 2016 and December 31, 2015 due to their short-term nature.

Income (Loss) Per Share of Clas

Income (Loss) Per Share of Class A and Class B Common Stock	9 Months Ended
	Sep. 30, 2016
Earnings Per Share [Abstract]
Income (Loss) Per Share of Class A and Class B Common Stock	LOSS) PER SHARE OF CLASS A AND CLASS B COMMON STOCK The Company computes net income (loss) per share of Class A and Class B common stock using the two-class method. Basic net income (loss) per share is computed using the weighted-average number of common shares outstanding during the period. Diluted net income (loss) per share is computed using the weighted-average number of common shares and the effect of potentially dilutive securities outstanding during the period. Potentially dilutive securities consist of stock options, restricted stock units, unvested restricted stock awards, warrants, performance share units, ESPP shares and convertible senior notes. The dilutive effect of these securities is reflected in diluted net income (loss) per share by application of the treasury stock method or the if-converted method. The computation of the diluted net income (loss) per share of Class A common stock assumes the conversion of Class B common stock, if dilutive, while the diluted net income (loss) per share of Class B common stock does not assume the conversion of those shares. The rights, including the liquidation and dividend rights, of the holders of Class A and Class B common stock are identical, except with respect to voting. Under the two-class method, the undistributed earnings for each period are allocated based on the contractual participation rights of the Class A and Class B common stock as if the earnings for the period had been distributed. As the liquidation and dividend rights are identical, the undistributed earnings are allocated on a proportionate basis. Further, as the Company assumes the conversion of Class B common stock, if dilutive, in the computation of the diluted net income (loss) per share of Class A common stock, the undistributed earnings are equal to net income (loss) for that computation. The following table sets forth the computation of basic and diluted net income (loss) per share of Class A and Class B common stock for the three and nine months ended September 30, 2016 and 2015 (in thousands, except share amounts and per share amounts): Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Class A Class B Class A Class B Class A Class B Class A Class B Basic net income (loss) per share: Numerator Allocation of net income (loss) - continuing operations $ (35,643 ) $ (149 ) $ (24,522 ) $ (91 ) $ (132,567 ) $ (552 ) $ (56,414 ) $ (205 ) Less: Allocation of net income (loss) attributable to noncontrolling interests 2,175 9 2,991 11 8,843 37 9,613 35 Allocation of net income (loss) attributable to common stockholders - continuing operations $ (37,818 ) $ (158 ) $ (27,513 ) $ (102 ) $ (141,410 ) $ (589 ) $ (66,027 ) $ (240 ) Allocation of net income (loss) attributable to common stockholders - discontinued operations — — — — — — 132,966 497 Allocation of net income (loss) attributable to common stockholders $ (37,818 ) $ (158 ) $ (27,513 ) $ (102 ) $ (141,410 ) $ (589 ) $ 66,939 $ 257 Denominator Weighted-average common shares outstanding 572,816,215 2,399,976 642,494,809 2,399,976 575,890,315 2,399,976 661,902,654 2,399,976 Basic net income (loss) per share: Continuing operations $ (0.07 ) $ (0.07 ) $ (0.04 ) $ (0.04 ) $ (0.25 ) $ (0.25 ) $ (0.10 ) $ (0.10 ) Discontinued operations — — — — — — 0.20 0.20 Basic net income (loss) per share $ (0.07 ) $ (0.07 ) $ (0.04 ) $ (0.04 ) $ (0.25 ) $ (0.25 ) $ 0.10 $ 0.10 Diluted net income (loss) per share: Numerator Allocation of net income (loss) attributable to common stockholders for basic computation - continuing operations $ (37,818 ) $ (158 ) $ (27,513 ) $ (102 ) $ (141,410 ) $ (589 ) $ (66,027 ) $ (240 ) Reallocation of net income (loss) attributable to common stockholders as a result of conversion of Class B (1) — — — — — — — — Plus: Interest expense on convertible senior notes, net of tax (1) — — — — — — — — Allocation of net income (loss) attributable to common stockholders - continuing operations $ (37,818 ) $ (158 ) $ (27,513 ) $ (102 ) $ (141,410 ) $ (589 ) $ (66,027 ) $ (240 ) Allocation of net income (loss) attributable to common stockholders for basic computation - discontinued operations $ — $ — $ — $ — $ — $ — $ 132,966 $ 497 Reallocation of net income (loss) attributable to common stockholders as a result of conversion of Class B (1) — — — — — — — — Allocation of net income (loss) attributable to common stockholders - discontinued operations — — — — — — 132,966 497 Allocation of net income (loss) attributable to common stockholders $ (37,818 ) $ (158 ) $ (27,513 ) $ (102 ) $ (141,410 ) $ (589 ) $ 66,939 $ 257 Denominator Weighted-average common shares outstanding used in basic computation 572,816,215 2,399,976 642,494,809 2,399,976 575,890,315 2,399,976 661,902,654 2,399,976 Conversion of Class B and other dilutive items (1) — — — — — — — — Weighted-average diluted shares outstanding (1) 572,816,215 2,399,976 642,494,809 2,399,976 575,890,315 2,399,976 661,902,654 2,399,976 Diluted net income (loss) per share: Continuing operations $ (0.07 ) $ (0.07 ) $ (0.04 ) $ (0.04 ) $ (0.25 ) $ (0.25 ) $ (0.10 ) $ (0.10 ) Discontinued operations — — — — — — 0.20 0.20 Diluted net income (loss) per share $ (0.07 ) $ (0.07 ) $ (0.04 ) $ (0.04 ) $ (0.25 ) $ (0.25 ) $ 0.10 $ 0.10 (1) Other dilutive items includes employee stock options, restricted shares, RSUs, convertible senior notes and warrants. The impact of the conversion of Class B common stock into Class A common stock, outstanding equity awards and outstanding convertible senior notes and warrants have not been reflected in the diluted income (loss) per share calculation for the three and nine months ended September 30, 2016 and 2015 because the effect on net income (loss) per share from continuing operations would be antidilutive. The following weighted-average outstanding equity awards are not included in the diluted net income (loss) per share calculations above because they would have had an antidilutive effect on the net income (loss) per share from continuing operations: Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Stock options 1,085,188 1,778,711 1,263,796 1,966,846 Restricted stock units 31,375,699 41,788,616 35,119,921 41,004,715 Restricted stock 1,219,018 1,740,104 1,377,116 1,108,814 ESPP shares 1,079,839 1,100,701 1,237,057 853,020 Convertible senior notes 46,296,300 — 30,185,866 — Warrants 46,296,300 — 24,250,443 — Total 127,352,344 46,408,132 93,434,199 44,933,395 In addition to the antidilutive awards as set forth in the table above, the Company also granted 389,046 performance share units to certain key employees during the nine months ended September 30, 2016 . Contingently issuable shares are excluded from the computation of diluted earnings per share if, based on current period results, the shares would not be issuable if the end of the reporting period were the end of the contingency period. These outstanding performance share units have been excluded from the table above for the nine months ended September 30, 2016 as the performance conditions were not satisfied as of the end of the period.

Segment Information

Segment Information	9 Months Ended
	Sep. 30, 2016
Segment Reporting [Abstract]
Segment Information	SEGMENT INFORMATION The Company organizes its operations into three segments: North America, EMEA and Rest of World. Segment operating results reflect earnings before stock-based compensation, acquisition-related expense (benefit), net, other income (expense), net and provision (benefit) for income taxes. Segment information reported in the tables below represents the operating segments of the Company organized in a manner consistent with which separate information is available and for which segment results are evaluated regularly by the Company's chief operating decision-maker in assessing performance and allocating resources. Revenue and profit or loss information by reportable segment reconciled to consolidated net income (loss) for the three and nine months ended September 30, 2016 and 2015 were as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 North America Revenue (1) $ 483,281 $ 463,931 $ 1,501,016 $ 1,425,095 Segment cost of revenue and operating expenses (3) (4) (5) 483,036 494,843 1,510,731 1,404,472 Segment operating income (loss) (3) 245 (30,912 ) (9,715 ) 20,623 EMEA Revenue (1) 196,573 199,287 583,848 619,554 Segment cost of revenue and operating expenses (3) (4) (6) 192,692 195,397 570,294 586,343 Segment operating income (loss) (3) 3,881 3,890 13,554 33,211 Rest of World Revenue 40,614 50,377 123,605 157,697 Segment cost of revenue and operating expenses (3) (4) 45,284 57,282 146,247 175,542 Segment operating income (loss) (3) (4,670 ) (6,905 ) (22,642 ) (17,845 ) Consolidated Revenue 720,468 713,595 2,208,469 2,202,346 Segment cost of revenue and operating expenses (3) (4) 721,012 747,522 2,227,272 2,166,357 Segment operating income (loss) (3) (544 ) (33,927 ) (18,803 ) 35,989 Stock-based compensation (2) 26,150 35,432 94,079 109,043 Acquisition-related expense (benefit), net (9 ) 1,064 4,305 1,300 Income (loss) from operations (26,685 ) (70,423 ) (117,187 ) (74,354 ) Other income (expense), net (7,028 ) (8,160 ) (14,303 ) (25,146 ) Income (loss) from continuing operations before provision (benefit) for income taxes (33,713 ) (78,583 ) (131,490 ) (99,500 ) Provision (benefit) for income taxes 2,079 (53,970 ) 1,629 (42,881 ) Income (loss) from continuing operations (35,792 ) (24,613 ) (133,119 ) (56,619 ) Income (loss) from discontinued operations, net of tax — — — 133,463 Net income (loss) $ (35,792 ) $ (24,613 ) $ (133,119 ) $ 76,844 (1) North America includes revenue from the United States of $476.3 million and $457.7 million for the three months ended September 30, 2016 and 2015 , respectively, and $1,477.7 million and $1,405.3 million for the nine months ended September 30, 2016 and 2015 , respectively. EMEA includes revenue from Switzerland of $130.6 million and $112.1 million for the three months ended September 30, 2016 and 2015 , respectively, and $374.1 million and $343.3 million for the nine months ended September 30, 2016 and 2015 , respectively. There were no other individual countries that represented more than 10% of consolidated total revenue for the three and nine months ended September 30, 2016 and 2015 . (2) Includes stock-based compensation classified within cost of revenue, marketing expense, selling, general and administrative expense and restructuring charges. Other income (expense), net, includes $0.3 million and $0.7 million of additional stock-based compensation for the three and nine months ended September 30, 2016 and $0.1 million and $0.2 million for the three and nine months ended September 30, 2015 . (3) Segment cost of revenue and operating expenses and segment operating income (loss) exclude stock-based compensation and acquisition-related (benefit) expense, net. This presentation corresponds to the measure of segment profit or loss that the Company's chief operating decision-maker uses in assessing segment performance and making resource allocation decisions. The following table summarizes the Company's stock-based compensation expense and acquisition-related expense (benefit), net by reportable segment for the three and nine months ended September 30, 2016 and 2015 (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Stock-based compensation Acquisition-related Stock-based compensation Acquisition-related Stock-based compensation Acquisition-related Stock-based compensation Acquisition-related North America $ 24,725 $ (9 ) $ 30,324 $ 1,064 $ 83,668 $ 4,305 $ 95,607 $ 1,300 EMEA 298 — 3,441 — 6,153 — 8,881 — Rest of World 1,419 — 1,810 — 4,929 — 4,716 — Consolidated $ 26,442 $ (9 ) $ 35,575 $ 1,064 $ 94,750 $ 4,305 $ 109,204 $ 1,300 (4) Segment cost of revenue and operating expenses for the three months ended September 30, 2016 includes restructuring charges of $1.0 million in North America, $(0.2) million in EMEA and $0.7 million in Rest of World. Segment cost of revenue and operating expenses for the nine months ended September 30, 2016 includes restructuring charges of $6.8 million in North America (which excludes $2.6 million of stock-based compensation), $13.9 million in EMEA (which excludes $2.1 million of stock-based compensation) and $4.6 million in Rest of World (which excludes $0.02 million of stock-based compensation). Segment cost of revenue and operating expenses for the three and nine months ended September 30, 2015 includes restructuring charges of $1.4 million in North America, $19.7 million in EMEA and $3.0 million in Rest of World. See Note 9, " Restructuring ," for additional information. (5) Segment cost of revenue and operating expenses for North America for the three and nine months ended September 30, 2015 includes a $37.5 million expense related to an increase in the Company's contingent liability for its securities litigation matter. See Note 7, "Commitments and Contingencies," for additional information. (6) Segment cost of revenue and operating expenses for EMEA for the three and nine months ended September 30, 2015 includes a $6.7 million expense for the write-off of a prepaid asset related to a marketing program that was discontinued because the counterparty ceased operations. The following table summarizes the Company's total assets by reportable segment as of September 30, 2016 and December 31, 2015 (in thousands): September 30, 2016 December 31, 2015 North America (1) $ 977,064 $ 1,063,595 EMEA 419,635 508,353 Rest of World 216,842 224,316 Consolidated total assets $ 1,613,541 $ 1,796,264 (1) North America contains assets from the United States of $925.5 million and $1,018.2 million as of September 30, 2016 and December 31, 2015 , respectively. There were no other individual countries that represented more than 10% of consolidated total assets as of September 30, 2016 and December 31, 2015 . Category Information The Company offers goods and services through its online local commerce marketplaces in three primary categories: Local Deals ("Local"), Groupon Goods ("Goods") and Groupon Getaways ("Travel"). Collectively, Local and Travel comprise the Company's "Services" deal offerings and Goods, which it also refers to as "Shopping," reflects its product offerings. The Company also earns advertising revenue, payment processing revenue and commission revenue generated when customers make purchases with retailers using digital coupons accessed through the Company's websites and mobile applications. Revenue and gross profit from these other sources, which are primarily generated through the Company's relationships with local and national merchants, are included within the Local category in the tables below. The following table summarizes the Company's third party and other and direct revenue from continuing operations by category for its three reportable segments for the three months ended September 30, 2016 and 2015 (in thousands): North America EMEA Rest of World Consolidated Three Months Ended September 30, Three Months Ended September 30, Three Months Ended September 30, Three Months Ended September 30, 2016 2015 2016 2015 2016 2015 2016 2015 Local (1) : Third party and other $ 176,220 $ 163,786 $ 58,581 $ 70,781 $ 21,876 $ 26,372 $ 256,677 $ 260,939 Travel: Third party 21,241 21,394 12,866 13,561 5,075 6,135 39,182 41,090 Total services 197,461 185,180 71,447 84,342 26,951 32,507 295,859 302,029 Goods: Third party 1,965 1,643 4,789 11,837 7,223 10,797 13,977 24,277 Direct 283,855 277,108 120,337 103,108 6,440 7,073 410,632 387,289 Total 285,820 278,751 125,126 114,945 13,663 17,870 424,609 411,566 Total revenue $ 483,281 $ 463,931 $ 196,573 $ 199,287 $ 40,614 $ 50,377 $ 720,468 $ 713,595 (1) Includes revenue from deals with local and national merchants and through local events. The following table summarizes the Company's third party and other and direct revenue from continuing operations by category for its three reportable segments for the nine months ended September 30, 2016 and 2015 (in thousands): North America EMEA Rest of World Consolidated Nine Months Ended Nine Months Ended Nine Months Ended Nine Months Ended 2016 2015 2016 2015 2016 2015 2016 2015 Local (1) : Third party and other $ 552,512 $ 517,111 $ 181,083 $ 228,860 $ 66,419 $ 85,152 $ 800,014 $ 831,123 Travel: Third party 63,556 63,341 34,753 41,378 14,445 18,993 112,754 123,712 Total services 616,068 580,452 215,836 270,238 80,864 104,145 912,768 954,835 Goods: Third party 6,319 3,962 20,792 33,517 22,654 34,959 49,765 72,438 Direct 878,629 840,681 347,220 315,799 20,087 18,593 1,245,936 1,175,073 Total 884,948 844,643 368,012 349,316 42,741 53,552 1,295,701 1,247,511 Total revenue $ 1,501,016 $ 1,425,095 $ 583,848 $ 619,554 $ 123,605 $ 157,697 $ 2,208,469 $ 2,202,346 (1) Includes revenue from deals with local and national merchants and through local events. The following table summarizes the Company's gross profit from continuing operations by category for its three reportable segments for the three months ended September 30, 2016 and 2015 (in thousands): North America EMEA Rest of World Consolidated Three Months Ended September 30, Three Months Ended September 30, Three Months Ended September 30, Three Months Ended September 30, 2016 2015 2016 2015 2016 2015 2016 2015 Local (1) : Third party and other $ 152,873 $ 138,798 $ 54,467 $ 66,288 $ 18,645 $ 22,568 $ 225,985 $ 227,654 Travel: Third party 17,257 17,644 11,882 12,323 3,962 4,859 33,101 34,826 Total services 170,130 156,442 66,349 78,611 22,607 27,427 259,086 262,480 Goods: Third party 1,509 1,359 4,156 10,025 4,666 6,392 10,331 17,776 Direct 30,022 33,442 14,554 14,880 124 334 44,700 48,656 Total 31,531 34,801 18,710 24,905 4,790 6,726 55,031 66,432 Total gross profit $ 201,661 $ 191,243 $ 85,059 $ 103,516 $ 27,397 $ 34,153 $ 314,117 $ 328,912 (1) Includes gross profit from deals with local and national merchants and through local events. The following table summarizes the Company's gross profit from continuing operations by category for its three reportable segments for the nine months ended September 30, 2016 and 2015 (in thousands): North America EMEA Rest of World Consolidated Nine Months Ended Nine Months Ended Nine Months Ended Nine Months Ended 2016 2015 2016 2015 2016 2015 2016 2015 Local (1) : Third party and other $ 475,703 $ 441,148 $ 169,579 $ 213,914 $ 56,155 $ 73,296 $ 701,437 $ 728,358 Travel: Third party 49,303 51,820 31,881 36,662 11,199 14,777 92,383 103,259 Total services 525,006 492,968 201,460 250,576 67,354 88,073 793,820 831,617 Goods: Third party 5,201 3,201 18,027 27,997 14,485 19,166 37,713 50,364 Direct 104,571 86,121 50,620 44,267 309 956 155,500 131,344 Total 109,772 89,322 68,647 72,264 14,794 20,122 193,213 181,708 Total gross profit $ 634,778 $ 582,290 $ 270,107 $ 322,840 $ 82,148 $ 108,195 $ 987,033 $ 1,013,325 (1) Includes gross profit from deals with local and national merchants and through local events.

Subsequent Event (Notes)

Subsequent Event (Notes)	9 Months Ended
	Sep. 30, 2016
Subsequent Event [Line Items]
Subsequent Events [Text Block]	SUBSEQUENT EVENT On October 24, 2016, the Company entered into an agreement to acquire all of the outstanding shares of LivingSocial, Inc. The acquisition is expected to close by early November 2016, subject to satisfaction of customary closing conditions. The acquisition consideration is not material.

Description of Business and B23

Description of Business and Basis of Presentation Description of Business, Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Principles of Consolidation	Principles of Consolidation The condensed consolidated financial statements include the accounts of the Company and its subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. The Company's condensed consolidated financial statements were prepared in accordance with U.S. GAAP and include the assets, liabilities, revenue and expenses of all wholly-owned subsidiaries and majority-owned subsidiaries over which the Company exercises control and variable interest entities for which the Company has determined that it is the primary beneficiary. Outside stockholders' interests in subsidiaries are shown on the condensed consolidated financial statements as "Noncontrolling interests." Equity investments in entities in which the Company does not have a controlling financial interest are accounted for under the equity method, the cost method, the fair value option or as available-for-sale securities, as appropriate.
Reclassification	Reclassifications Certain reclassifications have been made to the condensed consolidated financial statements of prior periods and the accompanying notes to conform to the current period presentation.
Use of Estimates	Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires estimates and assumptions that affect the reported amounts and classifications of assets and liabilities, revenue and expenses, and the related disclosures of contingent liabilities in the condensed consolidated financial statements and accompanying notes. Estimates are utilized for, but not limited to, stock-based compensation, income taxes, valuation of acquired goodwill and intangible assets, investments, customer refunds, contingent liabilities and the useful lives of property, equipment and software and intangible assets. Actual results could differ materially from those estimates.

Discontinued Operations and O24

Discontinued Operations and Other Dispositions (Tables)	9 Months Ended
	Sep. 30, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block]	The following table summarizes the major classes of line items included in income (loss) from discontinued operations, net of tax, for the nine months ended September 30, 2015 (in thousands): Nine Months Ended (1) Third party and other revenue $ 28,145 Direct revenue 39,065 Third party and other cost of revenue (13,958 ) Direct cost of revenue (38,031 ) Marketing expense (8,495 ) Selling, general and administrative expense (38,102 ) Other income, net 96 Loss from discontinued operations before gain on disposition and provision for income taxes (31,280 ) Gain on disposition 202,158 Provision for income taxes (37,415 ) Income (loss) from discontinued operations, net of tax $ 133,463 (1) The income from discontinued operations, net of tax, for the nine months ended September 30, 2015 includes the results of Ticket Monster through the disposition date of May 27, 2015.

Goodwill and Other Intangible25

Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill [Table Text Block]	The following table summarizes the Company's goodwill activity by segment for the nine months ended September 30, 2016 (in thousands): North America EMEA Rest of World Consolidated Balance as of December 31, 2015 $ 178,746 $ 92,063 $ 16,523 $ 287,332 Goodwill related to acquisition 671 — — 671 Goodwill related to dispositions (1,260 ) — (324 ) (1,584 ) Foreign currency translation (1 ) 2,593 845 3,437 Balance as of September 30, 2016 $ 178,156 $ 94,656 $ 17,044 $ 289,856
Schedule of Finite-Lived Intangible Assets by Major Class [Table Text Block]	The following tables summarize the Company's intangible assets (in thousands): September 30, 2016 Asset Category Gross Carrying Value Accumulated Amortization Net Carrying Value Subscriber relationships $ 53,402 $ 48,177 $ 5,225 Merchant relationships 9,776 8,609 1,167 Trade names 11,190 8,331 2,859 Developed technology 36,398 29,188 7,210 Brand relationships 7,960 4,267 3,693 Other intangible assets 23,097 17,776 5,321 Total $ 141,823 $ 116,348 $ 25,475 December 31, 2015 Asset Category Gross Carrying Value Accumulated Amortization Net Carrying Value Subscriber relationships $ 52,204 $ 43,725 $ 8,479 Merchant relationships 9,648 8,064 1,584 Trade names 11,013 7,396 3,617 Developed technology 37,103 25,436 11,667 Brand relationships 7,960 3,073 4,887 Other intangible assets 20,638 14,389 6,249 Total $ 138,566 $ 102,083 $ 36,483
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	As of September 30, 2016 , the Company's estimated future amortization expense related to intangible assets is as follows (in thousands): Remaining amounts in 2016 $ 3,818 2017 11,927 2018 8,057 2019 985 2020 608 Thereafter 80 Total $ 25,475

Investments (Tables)

Investments (Tables)	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Investments, All Other Investments [Abstract]
Equity Method Investments [Table Text Block]		The following table summarizes the condensed financial information for Monster LP as of September 30, 2015 , for the three months ended September 30, 2015 and for the period from May 28, 2015 through September 30, 2015 (in thousands): Three Months Ended Period from May 28, 2015 through September 30, 2015 (1) Revenue $ 33,465 $ 47,575 Gross profit (6,826 ) (2,488 ) Loss before income taxes (38,425 ) (46,764 ) Net loss (38,485 ) (46,764 ) September 30, 2015 Current assets $ 149,662 Non-current assets 483,108 Current liabilities 223,667 Non-current liabilities 7,038 (1) The summarized financial information is presented for the period beginning May 28, 2015, after completion of the Ticket Monster disposition transaction that resulted in the Company obtaining its minority limited partner interest in Monster LP.
Schedule of Cost and Equity Method Investments	The following table summarizes the Company's investments (dollars in thousands): September 30, 2016 Percent Ownership of Voting Stock December 31, 2015 Percent Ownership of Voting Stock Available-for-sale securities: Convertible debt securities $ 9,931 $ 10,116 Redeemable preferred shares 17,177 19% to 25% 22,834 17% to 25% Total available-for-sale securities 27,108 32,950 Cost method investments 30,085 2% to 19% 14,561 2% to 10% Fair value option investments 123,424 41% to 45% 130,725 43% to 45% Total investments $ 180,617 $ 178,236
Schedule of Available-for-sale Securities Reconciliation	The following table summarizes the amortized cost, gross unrealized gain, gross unrealized loss and fair value of the Company's available-for-sale securities as of September 30, 2016 and December 31, 2015 , respectively (in thousands): September 30, 2016 December 31, 2015 Amortized Cost Gross Unrealized Gain Gross Unrealized Loss (1) Fair Value Amortized Cost Gross Unrealized Gain Gross Unrealized Loss (1) Fair Value Available-for-sale securities: Convertible debt securities $ 8,263 $ 1,704 $ (36 ) $ 9,931 $ 9,234 $ 882 $ — $ 10,116 Redeemable preferred shares 18,375 — (1,198 ) 17,177 22,973 — (139 ) 22,834 Total available-for-sale securities $ 26,638 $ 1,704 $ (1,234 ) $ 27,108 $ 32,207 $ 882 $ (139 ) $ 32,950

Supplemental Consolidated Bal27

Supplemental Consolidated Balance Sheet and Statement of Operations Information (Tables)	9 Months Ended
	Sep. 30, 2016
SUPPLEMENTAL CONSOLIDATED BALANCE SHEET AND STATEMENT OF OPERATIONS INFORMATION [Abstract]
Schedule of Other Income (Expense)	The following table summarizes the Company's other income (expense), net for the three and nine months ended September 30, 2016 and 2015 (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Interest income $ 593 $ 331 $ 1,449 $ 888 Interest expense (5,778 ) (783 ) (11,759 ) (1,926 ) Gains (losses), net on changes in fair value of investments (1,594 ) (2,564 ) (7,301 ) (2,114 ) Foreign currency gains (losses), net (1) 234 (5,153 ) 5,362 (22,118 ) Other (483 ) 9 (2,054 ) 124 Other income (expense), net $ (7,028 ) $ (8,160 ) $ (14,303 ) $ (25,146 ) (1) Foreign currency gains (losses), net for the nine months ended September 30, 2016 includes $0.3 million of net cumulative translation gains that were reclassified to earnings as a result of the Company's exit from certain countries as part of its restructuring plan. Refer to Note 9, " Restructuring ," for additional information.
Schedule of Prepaid Expenses and Other Current Assets	The following table summarizes the Company's prepaid expenses and other current assets as of September 30, 2016 and December 31, 2015 (in thousands): September 30, 2016 December 31, 2015 Finished goods inventories $ 38,297 $ 42,305 Prepaid expenses 63,352 49,134 Income taxes receivable 21,967 32,483 VAT receivable 10,100 14,305 Other 11,564 15,478 Total prepaid expenses and other current assets $ 145,280 $ 153,705
Schedule of Accrued Merchant and Supplier Payables	The following table summarizes the Company's accrued merchant and supplier payables as of September 30, 2016 and December 31, 2015 (in thousands): September 30, 2016 December 31, 2015 Accrued merchant payables $ 403,779 $ 471,607 Accrued supplier payables (1) 205,160 304,604 Total accrued merchant and supplier payables $ 608,939 $ 776,211 (1) Amounts include payables to suppliers of inventories and providers of shipping and fulfillment services.
Schedule of Accrued Expenses	The following table summarizes the Company's accrued expenses and other current liabilities as of September 30, 2016 and December 31, 2015 (in thousands): September 30, 2016 December 31, 2015 Refunds reserve $ 27,492 $ 35,297 Payroll and benefits 62,904 50,454 Customer credits 32,706 32,293 Restructuring-related liabilities 11,200 11,556 Income taxes payable 10,033 13,885 Deferred revenue 35,873 40,396 Current portion of capital lease obligations 30,435 26,776 Other (1) 143,053 192,067 Total accrued expenses and other current liabilities $ 353,696 $ 402,724
Schedule of Other Liabilities, Noncurrent	The following table summarizes the Company's other non-current liabilities as of September 30, 2016 and December 31, 2015 (in thousands): September 30, 2016 December 31, 2015 Long-term tax liabilities $ 53,230 $ 46,506 Capital lease obligations 23,240 30,943 Other 37,134 36,091 Total other non-current liabilities $ 113,604 $ 113,540
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table summarizes the components of accumulated other comprehensive income (loss) as of September 30, 2016 and December 31, 2015 (in thousands): Foreign currency translation adjustments Unrealized gain (loss) on available-for-sale securities Pension adjustments Total Balance as of December 31, 2015 $ 52,261 $ 458 $ (1,513 ) $ 51,206 Other comprehensive income (loss) before reclassification adjustments (3,183 ) (184 ) 69 (3,298 ) Reclassification adjustments included in net income (loss) (7,776 ) — — (7,776 ) Other comprehensive income (loss) (10,959 ) (184 ) 69 (11,074 ) Balance as of September 30, 2016 $ 41,302 $ 274 $ (1,444 ) $ 40,132

Financing Arrangements (Tables)

Financing Arrangements (Tables)	9 Months Ended
	Sep. 30, 2016
Debt Instrument [Line Items]
Schedule of Convertible Debt Interest Expense [Table Text Block]	During the three and nine months ended September 30, 2016 , the Company recognized interest expense on the Notes as follows (in thousands): Three Months Ended September 30, 2016 Nine Months Ended September 30, 2016 Contractual interest expense based on 3.25% of the principal amount per annum $ 2,032 $ 4,063 Amortization of debt discount 2,458 4,854 Total interest expense $ 4,490 $ 8,917
Convertible Debt [Table Text Block]	The carrying amount of the Notes consisted of the following (in thousands): September 30, 2016 Liability component: Principal amount $ 250,000 Less: debt discount (73,527 ) Net carrying amount of liability component $ 176,473 Net carrying amount of equity component $ 67,329

Stockholders' Equity and Comp29

Stockholders' Equity and Compensation Arrangements Share - Based Compensation Activity (Tables)	9 Months Ended
	Sep. 30, 2016
Stockholders' Equity Note [Abstract]
Schedule of Share-based Compensation, Stock Options, Activity	The table below summarizes the stock option activity for the nine months ended September 30, 2016 : Options Weighted- Average Exercise Price Weighted- Average Remaining Contractual Term (in years) Aggregate Intrinsic Value (1) Outstanding at December 31, 2015 1,584,832 $ 0.95 3.96 $ 3,360 Exercised (490,283 ) 1.26 Forfeited (100,977 ) 0.86 Outstanding and exercisable at September 30, 2016 993,572 $ 0.78 3.09 $ 4,342 (1) The aggregate intrinsic value of options outstanding and exercisable represents the total pretax intrinsic value (the difference between the fair value of the Company's stock on the last day of each period and the exercise price, multiplied by the number of options where the fair value exceeds the exercise price) that would have been received by the option holders had all option holders exercised their options as of September 30, 2016 and December 31, 2015 , respectively.
Schedule of Share-based Compensation, Restricted Stock Units Award Activity	The table below summarizes activity regarding unvested restricted stock units granted under the Plans for the nine months ended September 30, 2016 : Restricted Stock Units Weighted- Average Grant Date Fair Value (per share) Unvested at December 31, 2015 39,143,509 $ 6.53 Granted 17,163,910 $ 3.73 Vested (17,667,674 ) $ 6.02 Forfeited (9,681,219 ) $ 6.53 Unvested at September 30, 2016 28,958,526 $ 5.19
Schedule of Nonvested Restricted Stock Units Activity	The table below summarizes activity regarding unvested restricted stock for the nine months ended September 30, 2016 : Restricted Stock Awards Weighted- Average Grant Date Fair Value (per share) Unvested at December 31, 2015 1,908,408 $ 5.72 Granted — $ — Vested (492,422 ) $ 7.42 Forfeited (196,968 ) $ 7.42 Unvested at September 30, 2016 1,219,018 $ 4.76

Restructuring (Tables)

Restructuring (Tables)	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Costs	The following table summarizes the costs incurred by segment related to the Company’s restructuring plan for the nine months ended September 30, 2016 (in thousands): Nine Months Ended September 30, 2016 Employee Severance and Benefit Costs (1) Asset Impairments Other Exit Costs Total Restructuring Charges North America $ 6,487 $ 45 $ 2,862 $ 9,394 EMEA 15,417 — 553 15,970 Rest of World 4,301 — 323 4,624 Consolidated $ 26,205 $ 45 $ 3,738 $ 29,988 (1) The employee severance and benefit costs for the nine months ended September 30, 2016 relates to the termination of approximately 900 employees. Substantially all of the remaining cash payments for those costs are expected to be disbursed through December 31, 2017. The following table summarizes the costs incurred by segment related to the Company’s restructuring plan for the three months ended September 30, 2016 (in thousands): Three Months Ended September 30, 2016 Employee Severance and Benefit Costs (1) Other Exit Costs Total Restructuring Charges North America $ 274 $ 695 $ 969 EMEA (412 ) 224 (188 ) Rest of World 580 98 678 Consolidated $ 442 $ 1,017 $ 1,459 (1) The employee severance and benefit costs for the three months ended September 30, 2016 relates to the termination of approximately 150 employees. Substantially all of the remaining cash payments for those costs are expected to be disbursed through June 30, 2017.	The following table summarizes the costs incurred by segment related to the Company’s restructuring plan for the three and nine months ended September 30, 2015 (in thousands): Three and Nine Months Ended September 30, 2015 Employee Severance and Benefit Costs (1) Asset Impairments Other Exit Costs Total Restructuring Charges North America $ 890 $ — $ 511 $ 1,401 EMEA 19,652 — 83 19,735 Rest of World 2,017 345 648 3,010 Consolidated $ 22,559 $ 345 $ 1,242 $ 24,146 (1) The employee severance and benefit costs for the three and nine months ended September 30, 2015 related to the termination of approximately 1,200 employees.
Schedule of Restructuring Reserve by Type of Cost	e following table summarizes restructuring liability activity for the nine months ended September 30, 2016 (in thousands): Employee Severance and Benefit Costs Other Exit Costs Total Balance as of December 31, 2015 $ 9,017 $ 2,539 $ 11,556 Charges payable in cash (1) 21,520 3,739 25,259 Cash payments (20,268 ) (5,583 ) (25,851 ) Foreign currency translation 223 13 236 Balance as of September 30, 2016 $ 10,492 $ 708 $ 11,200 (1) Excludes stock-based compensation of $4.7 million related to accelerated vesting of stock-based compensation awards for certain employees terminated as a result of the Company's restructuring activities for the nine months ended September 30, 2016 .

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2016
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following tables summarize the Company's assets and liabilities that are measured at fair value on a recurring basis (in thousands): Fair Value Measurement at Reporting Date Using Description September 30, 2016 Quoted Prices in Active Markets for Significant Other Significant Assets: Cash equivalents $ 237,070 $ 237,070 $ — $ — Fair value option investments 123,424 — — 123,424 Available-for-sale securities: Convertible debt securities 9,931 — — 9,931 Redeemable preferred shares 17,177 — — 17,177 Liabilities: Contingent consideration 14,626 — — 14,626 Fair Value Measurement at Reporting Date Using Description December 31, 2015 Quoted Prices in Active Markets for Significant Other Significant Assets: Cash equivalents $ 305,179 $ 305,179 $ — $ — Fair value option investments 130,725 — — 130,725 Available-for-sale securities: Convertible debt securities 10,116 — — 10,116 Redeemable preferred shares 22,834 — — 22,834 Liabilities: Contingent consideration 10,781 — — 10,781
Fair Value, Assets and Liabilities, Reconciliation of Level 3 Inputs [Table Text Block]	The following table provides a roll-forward of the fair value of recurring Level 3 fair value measurements for the three and nine months ended September 30, 2016 and 2015 (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Assets Fair value option investments: Beginning Balance $ 125,018 $ 122,525 $ 130,725 $ — Acquisition of investments — 16,400 — 138,475 Total gains (losses) included in earnings (1,594 ) (2,564 ) (7,301 ) (2,114 ) Ending Balance $ 123,424 $ 136,361 $ 123,424 $ 136,361 Unrealized gains (losses) still held (1) $ (1,594 ) $ (2,564 ) $ (7,301 ) $ (2,114 ) Available-for-sale securities Convertible debt securities: Beginning Balance $ 10,573 $ 8,026 $ 10,116 $ 2,527 Purchase of convertible debt security — — — 5,000 Sale of convertible debt security (1,685 ) — (1,685 ) — Total gains (losses) included in other comprehensive income 566 (362 ) 786 (50 ) Total gains (losses) included in other income (expense), net (2) 477 218 714 405 Ending Balance $ 9,931 $ 7,882 $ 9,931 $ 7,882 Unrealized gains (losses) still held (1) $ 1,043 $ (144 ) $ 1,500 $ 355 Redeemable preferred shares: Beginning Balance $ 22,343 $ 4,881 $ 22,834 $ 4,910 Total gains (losses) included in other comprehensive income (loss) (592 ) 53 (1,083 ) 24 Transfer to cost method investment classification upon elimination of redemption feature (4,574 ) — (4,574 ) — Ending Balance $ 17,177 $ 4,934 $ 17,177 $ 4,934 Unrealized (losses) gains still held (1) $ (592 ) $ 53 $ (1,083 ) $ 24 Liabilities Contingent Consideration: Beginning Balance $ 14,788 $ 233 $ 10,781 $ 1,983 Issuance of contingent consideration in connection with acquisitions — 9,605 — 9,605 Settlements of contingent consideration liabilities — — — (716 ) Reclass to non-fair value liabilities when no longer contingent — — (285 ) (331 ) Total losses (gains) included in earnings (3) (162 ) 435 4,130 (268 ) Ending Balance $ 14,626 $ 10,273 $ 14,626 $ 10,273 Unrealized losses (gains) still held (1) $ (162 ) $ 435 $ 4,004 $ (656 ) (1) Represents the unrealized losses or gains recorded in earnings and/or other comprehensive income (loss) during the period for assets and liabilities classified as Level 3 that are still held (or outstanding) at the end of the period. (2) Represents accretion of interest income and changes in the fair value of an embedded derivative. (3) Changes in the fair value of contingent consideration liabilities are classified within "Acquisition-related expense (benefit), net" on the condensed consolidated statements of operations.
Fair Value of Financial Assets and Liabilities not Measured at Fair Value	The following table presents the carrying amounts and fair values of financial instruments that are not carried at fair value in the consolidated financial statements (in thousands): September 30, 2016 December 31, 2015 Carrying Amount Fair Value Carrying Amount Fair Value Cost method investments $ 30,085 $ 32,632 $ 14,561 $ 15,922

Income (Loss) Per Share of Cl32

Income (Loss) Per Share of Class A and Class B Common Stock (Tables)	9 Months Ended
	Sep. 30, 2016
Earnings Per Share [Abstract]
Schedule of Earnings per Share, Basic and Diluted	The following table sets forth the computation of basic and diluted net income (loss) per share of Class A and Class B common stock for the three and nine months ended September 30, 2016 and 2015 (in thousands, except share amounts and per share amounts): Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Class A Class B Class A Class B Class A Class B Class A Class B Basic net income (loss) per share: Numerator Allocation of net income (loss) - continuing operations $ (35,643 ) $ (149 ) $ (24,522 ) $ (91 ) $ (132,567 ) $ (552 ) $ (56,414 ) $ (205 ) Less: Allocation of net income (loss) attributable to noncontrolling interests 2,175 9 2,991 11 8,843 37 9,613 35 Allocation of net income (loss) attributable to common stockholders - continuing operations $ (37,818 ) $ (158 ) $ (27,513 ) $ (102 ) $ (141,410 ) $ (589 ) $ (66,027 ) $ (240 ) Allocation of net income (loss) attributable to common stockholders - discontinued operations — — — — — — 132,966 497 Allocation of net income (loss) attributable to common stockholders $ (37,818 ) $ (158 ) $ (27,513 ) $ (102 ) $ (141,410 ) $ (589 ) $ 66,939 $ 257 Denominator Weighted-average common shares outstanding 572,816,215 2,399,976 642,494,809 2,399,976 575,890,315 2,399,976 661,902,654 2,399,976 Basic net income (loss) per share: Continuing operations $ (0.07 ) $ (0.07 ) $ (0.04 ) $ (0.04 ) $ (0.25 ) $ (0.25 ) $ (0.10 ) $ (0.10 ) Discontinued operations — — — — — — 0.20 0.20 Basic net income (loss) per share $ (0.07 ) $ (0.07 ) $ (0.04 ) $ (0.04 ) $ (0.25 ) $ (0.25 ) $ 0.10 $ 0.10 Diluted net income (loss) per share: Numerator Allocation of net income (loss) attributable to common stockholders for basic computation - continuing operations $ (37,818 ) $ (158 ) $ (27,513 ) $ (102 ) $ (141,410 ) $ (589 ) $ (66,027 ) $ (240 ) Reallocation of net income (loss) attributable to common stockholders as a result of conversion of Class B (1) — — — — — — — — Plus: Interest expense on convertible senior notes, net of tax (1) — — — — — — — — Allocation of net income (loss) attributable to common stockholders - continuing operations $ (37,818 ) $ (158 ) $ (27,513 ) $ (102 ) $ (141,410 ) $ (589 ) $ (66,027 ) $ (240 ) Allocation of net income (loss) attributable to common stockholders for basic computation - discontinued operations $ — $ — $ — $ — $ — $ — $ 132,966 $ 497 Reallocation of net income (loss) attributable to common stockholders as a result of conversion of Class B (1) — — — — — — — — Allocation of net income (loss) attributable to common stockholders - discontinued operations — — — — — — 132,966 497 Allocation of net income (loss) attributable to common stockholders $ (37,818 ) $ (158 ) $ (27,513 ) $ (102 ) $ (141,410 ) $ (589 ) $ 66,939 $ 257 Denominator Weighted-average common shares outstanding used in basic computation 572,816,215 2,399,976 642,494,809 2,399,976 575,890,315 2,399,976 661,902,654 2,399,976 Conversion of Class B and other dilutive items (1) — — — — — — — — Weighted-average diluted shares outstanding (1) 572,816,215 2,399,976 642,494,809 2,399,976 575,890,315 2,399,976 661,902,654 2,399,976 Diluted net income (loss) per share: Continuing operations $ (0.07 ) $ (0.07 ) $ (0.04 ) $ (0.04 ) $ (0.25 ) $ (0.25 ) $ (0.10 ) $ (0.10 ) Discontinued operations — — — — — — 0.20 0.20 Diluted net income (loss) per share $ (0.07 ) $ (0.07 ) $ (0.04 ) $ (0.04 ) $ (0.25 ) $ (0.25 ) $ 0.10 $ 0.10 (1) Other dilutive items includes employee stock options, restricted shares, RSUs, convertible senior notes and warrants. The impact of the conversion of Class B common stock into Class A common stock, outstanding equity awards and outstanding convertible senior notes and warrants have not been reflected in the diluted income (loss) per share calculation for the three and nine months ended September 30, 2016 and 2015 because the effect on net income (loss) per share from continuing operations would be antidilutive.
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	The following weighted-average outstanding equity awards are not included in the diluted net income (loss) per share calculations above because they would have had an antidilutive effect on the net income (loss) per share from continuing operations: Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Stock options 1,085,188 1,778,711 1,263,796 1,966,846 Restricted stock units 31,375,699 41,788,616 35,119,921 41,004,715 Restricted stock 1,219,018 1,740,104 1,377,116 1,108,814 ESPP shares 1,079,839 1,100,701 1,237,057 853,020 Convertible senior notes 46,296,300 — 30,185,866 — Warrants 46,296,300 — 24,250,443 — Total 127,352,344 46,408,132 93,434,199 44,933,395

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2016
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	Revenue and profit or loss information by reportable segment reconciled to consolidated net income (loss) for the three and nine months ended September 30, 2016 and 2015 were as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 North America Revenue (1) $ 483,281 $ 463,931 $ 1,501,016 $ 1,425,095 Segment cost of revenue and operating expenses (3) (4) (5) 483,036 494,843 1,510,731 1,404,472 Segment operating income (loss) (3) 245 (30,912 ) (9,715 ) 20,623 EMEA Revenue (1) 196,573 199,287 583,848 619,554 Segment cost of revenue and operating expenses (3) (4) (6) 192,692 195,397 570,294 586,343 Segment operating income (loss) (3) 3,881 3,890 13,554 33,211 Rest of World Revenue 40,614 50,377 123,605 157,697 Segment cost of revenue and operating expenses (3) (4) 45,284 57,282 146,247 175,542 Segment operating income (loss) (3) (4,670 ) (6,905 ) (22,642 ) (17,845 ) Consolidated Revenue 720,468 713,595 2,208,469 2,202,346 Segment cost of revenue and operating expenses (3) (4) 721,012 747,522 2,227,272 2,166,357 Segment operating income (loss) (3) (544 ) (33,927 ) (18,803 ) 35,989 Stock-based compensation (2) 26,150 35,432 94,079 109,043 Acquisition-related expense (benefit), net (9 ) 1,064 4,305 1,300 Income (loss) from operations (26,685 ) (70,423 ) (117,187 ) (74,354 ) Other income (expense), net (7,028 ) (8,160 ) (14,303 ) (25,146 ) Income (loss) from continuing operations before provision (benefit) for income taxes (33,713 ) (78,583 ) (131,490 ) (99,500 ) Provision (benefit) for income taxes 2,079 (53,970 ) 1,629 (42,881 ) Income (loss) from continuing operations (35,792 ) (24,613 ) (133,119 ) (56,619 ) Income (loss) from discontinued operations, net of tax — — — 133,463 Net income (loss) $ (35,792 ) $ (24,613 ) $ (133,119 ) $ 76,844 (1) North America includes revenue from the United States of $476.3 million and $457.7 million for the three months ended September 30, 2016 and 2015 , respectively, and $1,477.7 million and $1,405.3 million for the nine months ended September 30, 2016 and 2015 , respectively. EMEA includes revenue from Switzerland of $130.6 million and $112.1 million for the three months ended September 30, 2016 and 2015 , respectively, and $374.1 million and $343.3 million for the nine months ended September 30, 2016 and 2015 , respectively. There were no other individual countries that represented more than 10% of consolidated total revenue for the three and nine months ended September 30, 2016 and 2015 . (2) Includes stock-based compensation classified within cost of revenue, marketing expense, selling, general and administrative expense and restructuring charges. Other income (expense), net, includes $0.3 million and $0.7 million of additional stock-based compensation for the three and nine months ended September 30, 2016 and $0.1 million and $0.2 million for the three and nine months ended September 30, 2015 . (3) Segment cost of revenue and operating expenses and segment operating income (loss) exclude stock-based compensation and acquisition-related (benefit) expense, net. This presentation corresponds to the measure of segment profit or loss that the Company's chief operating decision-maker uses in assessing segment performance and making resource allocation decisions. The following table summarizes the Company's stock-based compensation expense and acquisition-related expense (benefit), net by reportable segment for the three and nine months ended September 30, 2016 and 2015 (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Stock-based compensation Acquisition-related Stock-based compensation Acquisition-related Stock-based compensation Acquisition-related Stock-based compensation Acquisition-related North America $ 24,725 $ (9 ) $ 30,324 $ 1,064 $ 83,668 $ 4,305 $ 95,607 $ 1,300 EMEA 298 — 3,441 — 6,153 — 8,881 — Rest of World 1,419 — 1,810 — 4,929 — 4,716 — Consolidated $ 26,442 $ (9 ) $ 35,575 $ 1,064 $ 94,750 $ 4,305 $ 109,204 $ 1,300 (4) Segment cost of revenue and operating expenses for the three months ended September 30, 2016 includes restructuring charges of $1.0 million in North America, $(0.2) million in EMEA and $0.7 million in Rest of World. Segment cost of revenue and operating expenses for the nine months ended September 30, 2016 includes restructuring charges of $6.8 million in North America (which excludes $2.6 million of stock-based compensation), $13.9 million in EMEA (which excludes $2.1 million of stock-based compensation) and $4.6 million in Rest of World (which excludes $0.02 million of stock-based compensation). Segment cost of revenue and operating expenses for the three and nine months ended September 30, 2015 includes restructuring charges of $1.4 million in North America, $19.7 million in EMEA and $3.0 million in Rest of World. See Note 9, " Restructuring ," for additional information. (5) Segment cost of revenue and operating expenses for North America for the three and nine months ended September 30, 2015 includes a $37.5 million expense related to an increase in the Company's contingent liability for its securities litigation matter. See Note 7, "Commitments and Contingencies," for additional information. (6) Segment cost of revenue and operating expenses for EMEA for the three and nine months ended September 30, 2015 includes a $6.7 million expense for the write-off of a prepaid asset related to a marketing program that was discontinued because the counterparty ceased operations.
Stock Based Compensation and Acquisition Related by Segment	Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Stock-based compensation Acquisition-related Stock-based compensation Acquisition-related Stock-based compensation Acquisition-related Stock-based compensation Acquisition-related North America $ 24,725 $ (9 ) $ 30,324 $ 1,064 $ 83,668 $ 4,305 $ 95,607 $ 1,300 EMEA 298 — 3,441 — 6,153 — 8,881 — Rest of World 1,419 — 1,810 — 4,929 — 4,716 — Consolidated $ 26,442 $ (9 ) $ 35,575 $ 1,064 $ 94,750 $ 4,305 $ 109,204 $ 1,300 (4) Segment cost of revenue and operating expenses for the three months ended September 30, 2016 includes restructuring charges of $1.0 million in North America, $(0.2) million in EMEA and $0.7 million in Rest of World. Segment cost of revenue and operating expenses for the nine months ended September 30, 2016 includes restructuring charges of $6.8 million in North America (which excludes $2.6 million of stock-based compensation), $13.9 million in EMEA (which excludes $2.1 million of stock-based compensation) and $4.6 million in Rest of World (which excludes $0.02 million of stock-based compensation). Segment cost of revenue and operating expenses for the three and nine months ended September 30, 2015 includes restructuring charges of $1.4 million in North America, $19.7 million in EMEA and $3.0 million in Rest of World. See Note 9, " Restructuring ," for additional information. (5) Segment cost of revenue and operating expenses for North America for the three and nine months ended September 30, 2015 includes a $37.5 million expense related to an increase in the Company's contingent liability for its securities litigation matter. See Note 7, "Commitments and Contingencies," for additional information. (6) Segment cost of revenue and operating expenses for EMEA for the three and nine months ended September 30, 2015 includes a $6.7 million expense for the write-off of a prepaid asset related to a marketing program that was discontinued because the counterparty ceased operations.
Schedule of Segment Assets	The following table summarizes the Company's total assets by reportable segment as of September 30, 2016 and December 31, 2015 (in thousands): September 30, 2016 December 31, 2015 North America (1) $ 977,064 $ 1,063,595 EMEA 419,635 508,353 Rest of World 216,842 224,316 Consolidated total assets $ 1,613,541 $ 1,796,264 (1) North America contains assets from the United States of $925.5 million and $1,018.2 million as of September 30, 2016 and December 31, 2015 , respectively. There were no other individual countries that represented more than 10% of consolidated total assets as of September 30, 2016 and
Third Party and Other and Direct Revenue	The following table summarizes the Company's third party and other and direct revenue from continuing operations by category for its three reportable segments for the nine months ended September 30, 2016 and 2015 (in thousands): North America EMEA Rest of World Consolidated Nine Months Ended Nine Months Ended Nine Months Ended Nine Months Ended 2016 2015 2016 2015 2016 2015 2016 2015 Local (1) : Third party and other $ 552,512 $ 517,111 $ 181,083 $ 228,860 $ 66,419 $ 85,152 $ 800,014 $ 831,123 Travel: Third party 63,556 63,341 34,753 41,378 14,445 18,993 112,754 123,712 Total services 616,068 580,452 215,836 270,238 80,864 104,145 912,768 954,835 Goods: Third party 6,319 3,962 20,792 33,517 22,654 34,959 49,765 72,438 Direct 878,629 840,681 347,220 315,799 20,087 18,593 1,245,936 1,175,073 Total 884,948 844,643 368,012 349,316 42,741 53,552 1,295,701 1,247,511 Total revenue $ 1,501,016 $ 1,425,095 $ 583,848 $ 619,554 $ 123,605 $ 157,697 $ 2,208,469 $ 2,202,346 (1) Includes revenue from deals with local and national merchants and through local events. The following table summarizes the Company's third party and other and direct revenue from continuing operations by category for its three reportable segments for the three months ended September 30, 2016 and 2015 (in thousands): North America EMEA Rest of World Consolidated Three Months Ended September 30, Three Months Ended September 30, Three Months Ended September 30, Three Months Ended September 30, 2016 2015 2016 2015 2016 2015 2016 2015 Local (1) : Third party and other $ 176,220 $ 163,786 $ 58,581 $ 70,781 $ 21,876 $ 26,372 $ 256,677 $ 260,939 Travel: Third party 21,241 21,394 12,866 13,561 5,075 6,135 39,182 41,090 Total services 197,461 185,180 71,447 84,342 26,951 32,507 295,859 302,029 Goods: Third party 1,965 1,643 4,789 11,837 7,223 10,797 13,977 24,277 Direct 283,855 277,108 120,337 103,108 6,440 7,073 410,632 387,289 Total 285,820 278,751 125,126 114,945 13,663 17,870 424,609 411,566 Total revenue $ 483,281 $ 463,931 $ 196,573 $ 199,287 $ 40,614 $ 50,377 $ 720,468 $ 713,595 (1) Includes revenue from deals with local and national merchants and through local events.
Gross Profit by Category	The following table summarizes the Company's gross profit from continuing operations by category for its three reportable segments for the three months ended September 30, 2016 and 2015 (in thousands): North America EMEA Rest of World Consolidated Three Months Ended September 30, Three Months Ended September 30, Three Months Ended September 30, Three Months Ended September 30, 2016 2015 2016 2015 2016 2015 2016 2015 Local (1) : Third party and other $ 152,873 $ 138,798 $ 54,467 $ 66,288 $ 18,645 $ 22,568 $ 225,985 $ 227,654 Travel: Third party 17,257 17,644 11,882 12,323 3,962 4,859 33,101 34,826 Total services 170,130 156,442 66,349 78,611 22,607 27,427 259,086 262,480 Goods: Third party 1,509 1,359 4,156 10,025 4,666 6,392 10,331 17,776 Direct 30,022 33,442 14,554 14,880 124 334 44,700 48,656 Total 31,531 34,801 18,710 24,905 4,790 6,726 55,031 66,432 Total gross profit $ 201,661 $ 191,243 $ 85,059 $ 103,516 $ 27,397 $ 34,153 $ 314,117 $ 328,912 (1) Includes gross profit from deals with local and national merchants and through local events. The following table summarizes the Company's gross profit from continuing operations by category for its three reportable segments for the nine months ended September 30, 2016 and 2015 (in thousands): North America EMEA Rest of World Consolidated Nine Months Ended Nine Months Ended Nine Months Ended Nine Months Ended 2016 2015 2016 2015 2016 2015 2016 2015 Local (1) : Third party and other $ 475,703 $ 441,148 $ 169,579 $ 213,914 $ 56,155 $ 73,296 $ 701,437 $ 728,358 Travel: Third party 49,303 51,820 31,881 36,662 11,199 14,777 92,383 103,259 Total services 525,006 492,968 201,460 250,576 67,354 88,073 793,820 831,617 Goods: Third party 5,201 3,201 18,027 27,997 14,485 19,166 37,713 50,364 Direct 104,571 86,121 50,620 44,267 309 956 155,500 131,344 Total 109,772 89,322 68,647 72,264 14,794 20,122 193,213 181,708 Total gross profit $ 634,778 $ 582,290 $ 270,107 $ 322,840 $ 82,148 $ 108,195 $ 987,033 $ 1,013,325 (1) Includes gross profit from deals with local and national merchants and through local events.

Description of Business and B34

Description of Business and Basis of Presentation Adjustments (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2016USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect on Retained Earnings, Net of Tax	$ (3,131)
Prior Period Reclassification Adjustment	6,200
Retained Earnings [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect on Retained Earnings, Net of Tax	$ (3,131)

Discontinued Operations and O35

Discontinued Operations and Other Dispositions (Details) - USD ($) $ in Thousands		Aug. 05, 2016	May 09, 2016	Apr. 12, 2016	Aug. 06, 2015	May 27, 2015	Sep. 30, 2016	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Sep. 30, 2016	Sep. 30, 2015	May 12, 2016
Disposal Group Income Statement [Abstract]
Third party and other revenue							$ 309,836	$ 326,306			$ 962,533	$ 1,027,273
Direct revenue							410,632	387,289			1,245,936	1,175,073
Third party and other cost of revenue							(40,419)	(46,050)			(131,000)	(145,292)
Direct cost of revenue							(365,932)	(338,633)			(1,090,436)	(1,043,729)
Marketing expense							(87,858)	(61,587)			(269,616)	(171,127)
Selling, general and administrative expense							(253,554)	(326,248)			(811,710)	(904,816)
Other income, net							7,028	8,160			14,303	25,146
Loss from discontinued operations before provision for income taxes												(31,280)
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax												202,158
Provision for income taxes									$ 64,200	$ (26,800)		(37,415)
Income (loss) from discontinued operations, net of tax	[1]											133,463
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax								138,000
Consideration received upon divestiture of a consolidated subsidiary						$ 398,800
Proceeds from Divestiture of Interest in Consolidated Subsidiaries								285,000
Noncash or Part Noncash Acquisition, Investments Acquired											0	122,075
Professional Fees						8,300
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax											300	(4,400)
Gain (Loss) on Disposition of Business							2,060	13,710			11,399	13,710
Discontinued Operations, Disposed of by Sale [Member]
Disposal Group Income Statement [Abstract]
Third party and other revenue												28,145
Direct revenue												39,065
Third party and other cost of revenue												(13,958)
Direct cost of revenue												(38,031)
Marketing expense												(8,495)
Selling, general and administrative expense												(38,102)
Other income, net												96
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax							0	0			0	(12,313)
Groupon India [Member]
Disposal Group Income Statement [Abstract]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax					$ 900
Ticket Monster [Member]
Disposal Group Income Statement [Abstract]
Net Book Value						$ 184,300
Groupon Russia [Member]
Disposal Group Income Statement [Abstract]
Professional Fees				$ 400
Net Book Value				(1,600)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax				$ 7,700
Gain (Loss) on Disposition of Business							8,900
Breadcrumb [Member]
Disposal Group Income Statement [Abstract]
Noncash or Part Noncash Acquisition, Investments Acquired											8,323
Professional Fees			$ 100
Net Book Value													$ 7,800
Gain (Loss) on Disposition of Business											400
Noncash or Part Noncash Divestiture, Amount of Consideration Received											8,200
Groupon Indonesia [Member]
Disposal Group Income Statement [Abstract]
Noncash or Part Noncash Acquisition, Investments Acquired											$ 2,700
Professional Fees		$ 300
Net Book Value		100
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax		200
Gain (Loss) on Disposition of Business							$ 2,100
Noncash or Part Noncash Divestiture, Amount of Consideration Received		2,400
Groupon India [Member]
Disposal Group Income Statement [Abstract]
Professional Fees					1,300
Guaranteed Benefit Liability, Net					900
Net Book Value					1,400
Gain (Loss) on Disposition of Business								$ 13,700
Noncash or Part Noncash Divestiture, Amount of Consideration Received		$ 14,200
Monster LP [Member]
Disposal Group Income Statement [Abstract]
Noncash or Part Noncash Acquisition, Investments Acquired												$ 122,100
Groupon India [Member]
Disposal Group Income Statement [Abstract]
Noncash or Part Noncash Acquisition, Investments Acquired					$ 16,400
[1]	The income from discontinued operations, net of tax, for the nine months ended September 30, 2015 includes the results of Ticket Monster through the disposition date of May 27, 2015.

Goodwill and Other Intangible36

Goodwill and Other Intangible Assets Goodwill Activity by Segment (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2016USD ($)
Goodwill [Line Items]
Goodwill, Acquired During Period	$ 671
Goodwill, Written off Related to Sale of Business Unit	(1,584)
Goodwill [Roll Forward]
Goodwill, beginning of period	287,332
Foreign currency translation	3,437
Goodwill, end of period	289,856
North America [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period	671
Goodwill, Written off Related to Sale of Business Unit	(1,260)
Goodwill [Roll Forward]
Goodwill, beginning of period	178,746
Foreign currency translation	(1)
Goodwill, end of period	178,156
EMEA [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period	0
Goodwill, Written off Related to Sale of Business Unit	0
Goodwill [Roll Forward]
Goodwill, beginning of period	92,063
Foreign currency translation	2,593
Goodwill, end of period	94,656
ROW [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period	0
Goodwill, Written off Related to Sale of Business Unit	(324)
Goodwill [Roll Forward]
Goodwill, beginning of period	16,523
Foreign currency translation	845
Goodwill, end of period	$ 17,044

Goodwill and Other Intangible37

Goodwill and Other Intangible Assets Other Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value, Intangible Assets	$ 141,823	$ 138,566
Accumulated Amortization, Intangible Assets	116,348	102,083
Net Carrying Value, Intangible Assets	25,475	36,483
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value, Intangible Assets	53,402	52,204
Accumulated Amortization, Intangible Assets	48,177	43,725
Net Carrying Value, Intangible Assets	5,225	8,479
Merchant relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value, Intangible Assets	9,776	9,648
Accumulated Amortization, Intangible Assets	8,609	8,064
Net Carrying Value, Intangible Assets	1,167	1,584
Trade names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value, Intangible Assets	11,190	11,013
Accumulated Amortization, Intangible Assets	8,331	7,396
Net Carrying Value, Intangible Assets	2,859	3,617
Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value, Intangible Assets	36,398	37,103
Accumulated Amortization, Intangible Assets	29,188	25,436
Net Carrying Value, Intangible Assets	7,210	11,667
Brand Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value, Intangible Assets	7,960	7,960
Accumulated Amortization, Intangible Assets	4,267	3,073
Net Carrying Value, Intangible Assets	3,693	4,887
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value, Intangible Assets	23,097	20,638
Accumulated Amortization, Intangible Assets	17,776	14,389
Net Carrying Value, Intangible Assets	$ 5,321	$ 6,249

Goodwill and Other Intangible38

Goodwill and Other Intangible Assets Estimated Future Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 4,400	$ 5,200	$ 13,643	$ 14,966
Finite-Lived Intangible Assets, Net, Amortization Expense [Abstract]
Remaining amounts in 2016	3,818		3,818
2,017	11,927		11,927
2,018	8,057		8,057
2,019	985		985
2,020	608		608
Thereafter	80		80
Total	$ 25,475		$ 25,475
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			1 year
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			5 years

Investments Investments Table (

Investments Investments Table (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Fair Value Measurement [Domain]
Schedule of Cost and Equity Method Investments [Line Items]
Equity method investments	$ 123,424	$ 130,725
Available-for-sale securities	27,108	32,950
Cost method investments	30,085	14,561
Total investments	$ 180,617	$ 178,236
Maximum [Member]
Schedule of Cost and Equity Method Investments [Line Items]
Available-for-Sale Securities, Ownership Percentage	25.00%	25.00%
Cost Method Investments, Ownership Percentage	19.00%	10.00%
Equity Method Investments, Ownership Percentage	45.00%	45.00%
Minimum [Member]
Schedule of Cost and Equity Method Investments [Line Items]
Available-for-Sale Securities, Ownership Percentage	19.00%	17.00%
Cost Method Investments, Ownership Percentage	2.00%	2.00%
Equity Method Investments, Ownership Percentage	41.00%	43.00%
Convertible debt securities [Member]
Schedule of Cost and Equity Method Investments [Line Items]
Available-for-sale securities	$ 9,931	$ 10,116
Redeemable preferred shares [Member]
Schedule of Cost and Equity Method Investments [Line Items]
Available-for-sale securities	$ 17,177	$ 22,834

Investments Available-for-sale

Investments Available-for-sale Securities (Details) - USD ($) $ in Thousands		Sep. 30, 2016		Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis		$ 26,638		$ 32,207
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax		1,704		882
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax		(1,234)		(139)
Available-for-sale securities		27,108		32,950
Convertible debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis		8,263		9,234
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax		1,704		882
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax		(36)	[1]	0
Available-for-sale securities		9,931		10,116
Redeemable preferred shares [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis		18,375		22,973
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax		0		0
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax	[1]	(1,198)		(139)
Available-for-sale securities		$ 17,177		$ 22,834
Minimum [Member]
Schedule of Available-for-sale Securities [Line Items]
Equity Method Investment, Ownership Percentage		41.00%		43.00%
AFS Debt Security, Ownership Percentage		19.00%		17.00%
Maximum [Member]
Schedule of Available-for-sale Securities [Line Items]
Equity Method Investment, Ownership Percentage		45.00%		45.00%
AFS Debt Security, Ownership Percentage		25.00%		25.00%
[1]	(1)Available-for-sale securities with an unrealized loss were in a loss position for less than 12 months.

Investments Fair Value Option I

Investments Fair Value Option Investment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015		Dec. 31, 2015	Jun. 30, 2015
Gain (Loss) on Investments [Line Items]
Assets, Current	$ 909,074		$ 909,074			$ 1,075,242
Revenue	720,468	$ 713,595	2,208,469	$ 2,202,346
Fair Value, Option, Changes in Fair Value, Gain (Loss)	(1,594)	(2,564)	(7,301)	(2,114)
Gross Profit	314,117	328,912	987,033	1,013,325
Other Assets, Noncurrent	24,290		24,290			16,620
Liabilities, Current	984,468		984,468			1,203,525
Liabilities, Noncurrent	113,604		113,604			$ 113,540
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Consumer, Outstanding Balance	1,100		1,100
Monster LP [Member]
Gain (Loss) on Investments [Line Items]
Assets, Current							$ 149,662
Revenue		33,465		47,575	[1]
Gross Profit		(6,826)		(2,488)	[1]
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest		(38,425)		(46,764)	[1]
Equity Method Investment, Summarized Financial Information, Net Income (Loss)		(38,485)		$ (46,764)	[1]
Other Assets, Noncurrent							483,108
Liabilities, Current							223,667
Liabilities, Noncurrent							$ 7,038
GroupMax [Member]
Gain (Loss) on Investments [Line Items]
Equity method investments	16,400		16,400
Monster LP [Member]
Gain (Loss) on Investments [Line Items]
Equity method investments	122,100		122,100
Fair Value, Option, Changes in Fair Value, Gain (Loss)	2,300	$ (2,564)	$ 900
Fair Value Inputs, Discount Rate			21.00%
GroupMax [Member]
Gain (Loss) on Investments [Line Items]
Fair Value, Option, Changes in Fair Value, Gain (Loss)	$ (3,900)		$ (8,200)
Fair Value Inputs, Discount Rate			20.00%
[1]	The summarized financial information is presented for the period beginning May 28, 2015, after completion of the Ticket Monster disposition transaction that resulted in the Company obtaining its minority limited partner interest in Monster LP.

Investments Other Investments (

Investments Other Investments (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Aug. 05, 2016	May 09, 2016
Schedule of Cost-method Investments [Line Items]
Noncash or Part Noncash Acquisition, Investments Acquired	$ 0	$ 122,075
Breadcrumb [Member]
Schedule of Cost-method Investments [Line Items]
Cost Method Investments				13.00%
Noncash or Part Noncash Acquisition, Investments Acquired	8,323
Groupon Indonesia [Member]
Schedule of Cost-method Investments [Line Items]
Cost Method Investments			7.00%
Noncash or Part Noncash Acquisition, Investments Acquired	$ 2,700

Supplemental Consolidated Bal43

Supplemental Consolidated Balance Sheet and Statement of Operations Information (Details) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2011	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Interest and Other Income [Abstract]
Interest income		$ 593	$ 331		$ 1,449	$ 888
Interest expense		(5,778)	(783)		(11,759)	(1,926)
Fair Value, Option, Changes in Fair Value, Gain (Loss)		(1,594)	(2,564)		(7,301)	(2,114)
Foreign exchange losses, net	[1]	234	(5,153)		5,362	(22,118)
Other Expenses		(483)			(2,054)
Other Income			9
Other Noncash Income (Expense)						124
Other expense, net		(7,028)	$ (8,160)		(14,303)	(25,146)
Reclassification of amount included in net income (loss) from continuing operations					(300)	$ 4,400
Prepaid Expense and Other Assets, Current [Abstract]
Finished goods inventories		38,297			38,297		$ 42,305
Prepaid expenses		63,352			63,352		49,134
Income taxes receivable		21,967			21,967		32,483
VAT receivable		10,100			10,100		14,305
Other		11,564			11,564		15,478
Total prepaid expenses and other current assets		145,280			145,280		153,705
Litigation Settlement, Expense		45,000		$ 8,500
Merchant and Supplier Payables [Abstract]
Accrued merchant payables		403,779			403,779		471,607
Accrued supplier payables	[2]	205,160			205,160		304,604
Total accrued merchant and supplier payables		608,939			608,939		776,211
Accrued Expenses [Abstract]
Refunds reserve		27,492			27,492		35,297
Payroll and benefits		62,904			62,904		50,454
Customer credits		32,706			32,706		32,293
Restructuring Reserve, Current		11,200			11,200		11,556
Taxes Payable, Current		10,033			10,033		13,885
Deferred revenue		35,873			35,873		40,396
Capital lease obligations		30,435			30,435		26,776
Other	[3]	143,053			143,053		192,067
Total accrued expenses		353,696			353,696		402,724
Liabilities, Noncurrent [Abstract]
Long-term tax liabilities		53,230			53,230		46,506
Capital lease obligations		23,240			23,240		30,943
Other		37,134			37,134		36,091
Total other non-current liabilities		113,604			113,604		$ 113,540
Estimated Litigation Liability, Noncurrent		45,000			45,000
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning Balance, Equity					470,587
Other comprehensive income (loss) before reclassification adjustments					(3,298)
Reclassification adjustments included in net income (loss)					7,776
Other comprehensive income (loss)					(11,074)
Ending Balance, Equity		332,156			332,156
Foreign Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning Balance, Equity					52,261
Other comprehensive income (loss) before reclassification adjustments					(3,183)
Reclassification adjustments included in net income (loss)					7,776
Other comprehensive income (loss)					(10,959)
Ending Balance, Equity		41,302			41,302
Unrealized Gain (Loss) On Available-For-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning Balance, Equity					458
Other comprehensive income (loss) before reclassification adjustments					(184)
Reclassification adjustments included in net income (loss)					0
Other comprehensive income (loss)					(184)
Ending Balance, Equity		274			274
Pension Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning Balance, Equity					(1,513)
Other comprehensive income (loss) before reclassification adjustments					69
Reclassification adjustments included in net income (loss)					0
Other comprehensive income (loss)					69
Ending Balance, Equity		(1,444)			(1,444)
AOCI Including Portion Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning Balance, Equity					51,206
Ending Balance, Equity		$ 40,132			$ 40,132
[1]	Foreign currency gains (losses), net for the nine months ended September 30, 2016 includes $0.3 million of net cumulative translation gains that were reclassified to earnings as a result of the Company's exit from certain countries as part of its restructuring plan. Refer to Note 9, "Restructuring," for additional information. Foreign currency gains (losses), net for the nine months ended September 30, 2015 includes a $4.4 million loss related to the cumulative translation adjustment from the Company's legacy business in the Republic of Korea that was reclassified to earnings as a result of the Ticket Monster disposition.
[2]	September 30, 2016 December 31, 2015Accrued merchant payables$403,779 $471,607Accrued supplier payables (1)205,160 304,604Total accrued merchant and supplier payables$608,939 $776,211(1)Amounts include payables to suppliers of inventories and providers of shipping and fulfillment services.
[3]	As of December 31, 2015, Other included a $45.0 million liability for the Company's securities litigation matter (see Note 7, "Commitments and Contingencies"). Final court approval of the settlement for that matter was granted on July 13, 2016 and the Company's settlement obligation was satisfied during the three months ended September 30, 2016.

Financing Arrangements (Details

Financing Arrangements (Details) - USD ($)	May 09, 2016	Apr. 04, 2016	Sep. 30, 2016	Sep. 30, 2016	Sep. 30, 2015
Debt Instrument [Line Items]
Interest Expense, Debt, Excluding Amortization			$ 2,032,000	$ 4,063,000
Convertible Debt, Fair Value Disclosures			$ 298,000,000	$ 298,000,000
Debt Instrument, Convertible, Remaining Discount Amortization Period			5 years 6 months
Share Price			$ 5.15	$ 5.15
Payments for Derivative Instrument, Financing Activities				$ 59,163,000
Hedging Activity, Shares Covered	46,300,000
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities			46,300,000
Convertible Note Hedge, Strike Price	$ 5.40
Class of Warrant or Right, Exercise Price of Warrants or Rights			$ 8.50	$ 8.50
Debt Instrument, Face Amount			$ 250,000,000	$ 250,000,000
Debt Instrument, Unamortized Discount			(73,527,000)	(73,527,000)
Convertible Notes Payable, Noncurrent			176,473,000	176,473,000
Proceeds from Debt, Net of Issuance Costs			$ 243,200,000
Debt Instrument, Interest Rate, Stated Percentage		3.25%
Debt Conversion, Converted Instrument, Amount		$ 1,000
Debt Conversion, Converted Instrument, Shares Issued		185.1852
Debt Instrument, Convertible, Conversion Price		$ 5.40
Proceeds from Issuance of Warrants				$ 35,495,000	$ 0
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger		150.00%
Debt Instrument, Convertible, Threshold Trading Days		20
Debt Instrument, Convertible, Threshold Consecutive Trading Days		30 days
Debt Instrument, Interest Rate, Effective Percentage			9.75%	9.75%
Debt Issuance Cost			$ 6,800,000
Deferred Finance Costs, Net			4,800,000	$ 4,800,000
Amortization of Debt Discount (Premium)			2,458,000	4,854,000	$ 0
Interest Expense, Debt			4,490,000	8,917,000
Senior Notes [Member]
Debt Instrument [Line Items]
Convertible Debt		$ 250,000,000
Additional Paid-in Capital [Member]
Debt Instrument [Line Items]
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt				67,329,000
Transaction Costs [Member]
Debt Instrument [Line Items]
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt			$ 2,000,000
Excluding Transaction Costs [Member]
Debt Instrument [Line Items]
Payments for Derivative Instrument, Financing Activities				$ 59,100,000

Financing Arrangements Revolvin

Financing Arrangements Revolving Credit Agreement (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Line of Credit Facility [Line Items]
Cash Institution Covenant	$ 200,000
Line of Credit Facility, Maximum Borrowing Capacity	250,000
Unrestricted Cash Covenant	400,000
Letters of Credit Outstanding, Amount	11,400	$ 11,600
Previous Credit Agreement [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	250,000
Letter of Credit [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 45,000
Minimum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Interest Rate Description	0.005
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.25%
Maximum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Interest Rate Description	0.0225
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.40%
Geographic Distribution, Domestic [Member]
Line of Credit Facility [Line Items]
Securities Owned and Pledged as Collateral, Description	1
Geographic Distribution, Foreign [Member]
Line of Credit Facility [Line Items]
Securities Owned and Pledged as Collateral, Description	0.65

Commitments and Contingencies L

Commitments and Contingencies Legal Matters (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2016	Sep. 30, 2011
Loss Contingencies [Line Items]
Litigation Settlement, Expense	$ 45	$ 8.5

Stockholders' Equity and Comp47

Stockholders' Equity and Compensation Arrangements Initial Public Offering, Convertible Preferred Stock and Common Stock (Details)	12 Months Ended
	Dec. 31, 2012NumberofClasses
Classes of common stock, number	3

Stockholders' Equity and Comp48

Stockholders' Equity and Compensation Arrangements Repurchase Program (Details) - Common Class A [Member] - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2016	Apr. 04, 2016	Mar. 31, 2015
Employee Stock Purchase Plan [Line Items]
Stock Repurchase Program, Authorized Amount			$ 200	$ 500
Stock Repurchased During Period, Shares	5,213,778	30,829,948
Stock Repurchased During Period, Value	$ 24.6	$ 112.5
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased		244,700,000

Stockholders' Equity and Comp49

Stockholders' Equity and Compensation Arrangements Groupon, Inc. Stock Plans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016		Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	79,071,218		79,071,218
Share-based Compensation	$ 26,442	$ 35,575	$ 94,750	[1]	$ 109,204	[1]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount	2,300	2,800	7,300		$ 9,200
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 124,800		$ 124,800
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition			1 year
Employee Stock Purchase Plan, shares authorized	10,000,000		10,000,000
Employee Stock Purchase Plan, issued shares			1,669,782		1,037,198
Continuing Operations [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation		$ 35,600			$ 109,200
Discontinued Operations [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation					$ 5,300
[1]	Includes stock-based compensation classified within cost of revenue, marketing expense, selling, general and administrative expense and restructuring charges. Other income (expense), net, includes $0.3 million and $0.7 million of additional stock-based compensation for the three and nine months ended September 30, 2016 and $0.1 million and $0.2 million for the three and nine months ended September 30, 2015.

Stockholders' Equity and Comp50

Stockholders' Equity and Compensation Arrangements Stock Option Activity (Details) - Employee Stock Option [Member] - USD ($) $ / shares in Units, $ in Thousands		9 Months Ended	12 Months Ended
		Sep. 30, 2016	Dec. 31, 2015
Options [Abstract]
Outstanding stock options		1,584,832
Exercise of stock options, shares		(490,283)
Forfeited stock options		(100,977)
Outstanding stock options		993,572	1,584,832
Weighted average number of shares outstanding
Weighted Average Exercise Price Outstanding Stock Options		$ 0.95
Weighted Average Exercise Price, Exercised Options		1.26
Weighted Average Exercise Price, Forfeited Options		0.86
Weighted Average Exercise Price Outstanding Stock Options		$ 0.78	$ 0.95
Weighted Average Remaining Contractual Term [Abstract]
Weighted Average Remaining Contractual Term		3 years 1 month 3 days	3 years 11 months 15 days
Weighted Average Remaining Contractual Term		3 years 1 month 3 days	3 years 11 months 15 days
Aggregate Intrinsic Value [Abstract]
Average Intrinsic Value, Outstanding	[1]	$ 3,360
Average Intrinsic Value, Outstanding	[1]	$ 4,342	$ 3,360
[1]	The aggregate intrinsic value of options outstanding and exercisable represents the total pretax intrinsic value (the difference between the fair value of the Company's stock on the last day of each period and the exercise price, multiplied by the number of options where the fair value exceeds the exercise price) that would have been received by the option holders had all option holders exercised their options as of September 30, 2016 and December 31, 2015, respectively.

Stockholders' Equity and Comp51

Stockholders' Equity and Compensation Arrangements Restricted Stock Units (Details) - Restricted Stock Units (RSUs) [Member] - $ / shares	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016
Restricted Stock Units [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number		39,143,509
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		17,163,910
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period		(17,667,674)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period		(9,681,219)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	28,958,526	28,958,526
Weighted Average Grant Date Fair Value [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value		$ 6.53
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value		3.73
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value		6.02
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value		6.53
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$ 5.19	$ 5.19
Ticket Monster [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Adjustments to Additional Paid in Capital, Share-based Compensation, Restricted Stock Unit or Restricted Stock Award, Requisite Service Period Recognition	575,744
Restricted Stock Units [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	194,522	194,522

Stockholders' Equity and Comp52

Stockholders' Equity and Compensation Arrangements Restricted Stock Awards (Details) - Restricted Stock [Member]	9 Months Ended
	Sep. 30, 2016$ / sharesshares
Restricted Stock Award [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number | shares	1,908,408
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | shares	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period | shares	(492,422)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period | shares	(196,968)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number | shares	1,219,018
Weighted Average Grant Date Fair Value [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value | $ / shares	$ 5.72
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value | $ / shares	7.42
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value | $ / shares	7.42
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value | $ / shares	$ 4.76

Stockholders' Equity and Comp53

Stockholders' Equity and Compensation Arrangements Performance Share Units (Details)	9 Months Ended
	Sep. 30, 2016$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	79,071,218
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Granted, Value, Share-based Compensation, Gross	389,046
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares	$ 4

Restructuring Restructuring Cos

Restructuring Restructuring Costs (Details) $ in Thousands		3 Months Ended			9 Months Ended
		Sep. 30, 2016USD ($)numberofemployees		Sep. 30, 2015USD ($)	Sep. 30, 2016USD ($)numberofemployees		Sep. 30, 2015USD ($)numberofemployees		Jan. 26, 2016
Restructuring Cost and Reserve [Line Items]
Revenue		$ 720,468		$ 713,595	$ 2,208,469		$ 2,202,346
Restructuring Revenue				11,200			39,500
Restructuring Loss				2,200			8,000
Restructuring charges		$ 1,459		24,146	$ 29,988		$ 24,146
Number of employees terminated | numberofemployees		150			900		1,200
North America [Member]
Restructuring Cost and Reserve [Line Items]
Revenue	[1]	$ 483,281		463,931	$ 1,501,016		$ 1,425,095
Restructuring charges		1,000			9,400		1,400
EMEA [Member]
Restructuring Cost and Reserve [Line Items]
Revenue	[1]	196,573		199,287	583,848		619,554
Restructuring charges		(200)			16,000		19,700
ROW [Member]
Restructuring Cost and Reserve [Line Items]
Revenue		40,614		$ 50,377	123,605		157,697
Restructuring charges		700			4,600		3,000
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Costs					52,200
Restructuring charges		442	[2]		26,205	[3]	22,559	[4]
Employee Severance [Member] | North America [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		274			6,487		890
Employee Severance [Member] | EMEA [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		(412)			15,417		19,652
Employee Severance [Member] | ROW [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		580			4,301		2,017
Asset Impairments Related to Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Costs					7,300
Restructuring charges					45		345
Asset Impairments Related to Restructuring [Member] | North America [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges					45		0
Asset Impairments Related to Restructuring [Member] | EMEA [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges					0		0
Asset Impairments Related to Restructuring [Member] | ROW [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges					0		345
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		1,017			3,738		1,242
Other Restructuring [Member] | North America [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		695			2,862		511
Other Restructuring [Member] | EMEA [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		224			553		83
Other Restructuring [Member] | ROW [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 98			$ 323		$ 648
Facility Closing [Member] | EMEA [Member]
Restructuring Cost and Reserve [Line Items]
Number of Countries in which Entity Operates		11			11				4
Facility Closing [Member] | ROW [Member]
Restructuring Cost and Reserve [Line Items]
Number of Countries in which Entity Operates		6			6
[1]	North America includes revenue from the United States of $476.3 million and $457.7 million for the three months ended September 30, 2016 and 2015, respectively, and $1,477.7 million and $1,405.3 million for the nine months ended September 30, 2016 and 2015, respectively. EMEA includes revenue from Switzerland of $130.6 million and $112.1 million for the three months ended September 30, 2016 and 2015, respectively, and $374.1 million and $343.3 million for the nine months ended September 30, 2016 and 2015, respectively. There were no other individual countries that represented more than 10% of consolidated total revenue for the three and nine months ended September 30, 2016 and 2015.
[2]	The employee severance and benefit costs for the three months ended September 30, 2016 relates to the termination of approximately 150 employees. Substantially all of the remaining cash payments for those costs are expected to be disbursed through June 30, 2017.
[3]	The employee severance and benefit costs for the nine months ended September 30, 2016 relates to the termination of approximately 900 employees. Substantially all of the remaining cash payments for those costs are expected to be disbursed through December 31, 2017.
[4]	The employee severance and benefit costs for the three and nine months ended September 30, 2015 related to the termination of approximately 1,200 employees.

Restructuring Restructuring Act

Restructuring Restructuring Activity (Details) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
		Sep. 30, 2016		Sep. 30, 2015	Sep. 30, 2016		Sep. 30, 2015		Dec. 31, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 1,459		$ 24,146	$ 29,988		$ 24,146
Restructuring Reserve		11,200			11,200				$ 11,556
Restructuring charges	[1]	25,259
Payments for Restructuring		25,851
Restructuring Reserve, Translation Adjustment		236
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		442	[2]		26,205	[3]	22,559	[4]
Restructuring Reserve		10,492			10,492				9,017
Restructuring charges	[1]	21,520
Payments for Restructuring		20,268
Restructuring Reserve, Translation Adjustment		223
Asset Impairments Related to Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges					45		345
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		1,017			3,738		1,242
Restructuring Reserve		708			708				$ 2,539
Restructuring charges		3,739
Payments for Restructuring		5,583
Restructuring Reserve, Translation Adjustment		13
North America [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		1,000			9,400		1,400
North America [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		274			6,487		890
North America [Member] | Asset Impairments Related to Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges					45		0
North America [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		695			2,862		511
EMEA [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		(200)			16,000		19,700
EMEA [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		(412)			15,417		19,652
EMEA [Member] | Asset Impairments Related to Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges					0		0
EMEA [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		224			553		83
ROW [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		700			4,600		3,000
ROW [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		580			4,301		2,017
ROW [Member] | Asset Impairments Related to Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges					0		345
ROW [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 98			$ 323		$ 648
[1]	Excludes stock-based compensation of $4.7 million related to accelerated vesting of stock-based compensation awards for certain employees terminated as a result of the Company's restructuring activities for the nine months ended September 30, 2016.
[2]	The employee severance and benefit costs for the three months ended September 30, 2016 relates to the termination of approximately 150 employees. Substantially all of the remaining cash payments for those costs are expected to be disbursed through June 30, 2017.
[3]	The employee severance and benefit costs for the nine months ended September 30, 2016 relates to the termination of approximately 900 employees. Substantially all of the remaining cash payments for those costs are expected to be disbursed through December 31, 2017.
[4]	The employee severance and benefit costs for the three and nine months ended September 30, 2015 related to the termination of approximately 1,200 employees.

Restructuring Restructuring Det

Restructuring Restructuring Details (Details) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2016USD ($)numberofemployees		Sep. 30, 2015USD ($)	Sep. 30, 2016USD ($)numberofemployees		Sep. 30, 2015USD ($)numberofemployees		Jan. 26, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring Revenue			$ 11,200			$ 39,500
Restructuring charges	$ 1,459		24,146	$ 29,988		$ 24,146
Number of employees terminated | numberofemployees	150			900		1,200
Restructuring Loss			$ 2,200			$ 8,000
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 442	[1]		$ 26,205	[2]	22,559	[3]
Share Distribution [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				4,700
Asset Impairments Related to Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				45		345
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,017			3,738		1,242
North America [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,000			9,400		1,400
North America [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	274			6,487		890
North America [Member] | Share Distribution [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				2,600
North America [Member] | Asset Impairments Related to Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				45		0
North America [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	695			2,862		511
ROW [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 700			$ 4,600		3,000
ROW [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Number of Countries in which Entity Operates	6			6
ROW [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 580			$ 4,301		2,017
ROW [Member] | Share Distribution [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				0
ROW [Member] | Asset Impairments Related to Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				0		345
ROW [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	98			323		648
EMEA [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ (200)			$ 16,000		19,700
EMEA [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Number of Countries in which Entity Operates	11			11				4
EMEA [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ (412)			$ 15,417		19,652
EMEA [Member] | Share Distribution [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				2,100
EMEA [Member] | Asset Impairments Related to Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				0		0
EMEA [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 224			$ 553		$ 83
[1]	The employee severance and benefit costs for the three months ended September 30, 2016 relates to the termination of approximately 150 employees. Substantially all of the remaining cash payments for those costs are expected to be disbursed through June 30, 2017.
[2]	The employee severance and benefit costs for the nine months ended September 30, 2016 relates to the termination of approximately 900 employees. Substantially all of the remaining cash payments for those costs are expected to be disbursed through December 31, 2017.
[3]	The employee severance and benefit costs for the three and nine months ended September 30, 2015 related to the termination of approximately 1,200 employees.

Income Taxes Text (Details)

Income Taxes Text (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Loss from continuing operations before provision for income taxes	$ (33,713)	$ (78,583)	$ (131,490)	$ (99,500)
Provision for income taxes	2,079	$ (53,970)	$ 1,629	$ (42,881)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			35.00%
Potential Change in Unrecognized Tax Benefits	$ 24,900		$ 24,900

Fair Value Measurements Conting

Fair Value Measurements Contingent Obligations (Details) $ in Millions	9 Months Ended
	Sep. 30, 2016USD ($)
Other Acquisitions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration Arrangements, Change in Range of Outcomes, Contingent Consideration, Liability, Value, High	$ 16

Income (Loss) Per Share of Cl59

Income (Loss) Per Share of Class A and Class B Common Stock Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Basic net income (loss) per share
Allocation of net loss - continuing operations		$ (35,792)	$ (24,613)	$ (133,119)	$ (56,619)
Less: Allocation of net income attributable to noncontrolling interests		2,184	3,002	8,880	9,648
Net loss from discontinued operations		0	0	0	133,463
Net loss attributable to Groupon, Inc.		$ (37,976)	$ (27,615)	$ (141,999)	$ 67,196
Basic, weighted average number of shares outstanding		575,216,191	644,894,785	578,290,291	664,302,630
Continuing operations		$ (0.07)	$ (0.04)	$ (0.25)	$ (0.10)
Discontinued operations		0	0	0	0.20
Basic, net (loss) earnings per share		$ (0.07)	$ (0.04)	$ (0.25)	$ 0.10
Diluted net income (loss) per share
Basic, weighted average number of shares outstanding		575,216,191	644,894,785	578,290,291	664,302,630
Diluted, weighted average number of shares outstanding		575,216,191	644,894,785	578,290,291	664,302,630
Continuing operations		$ (0.07)	$ (0.04)	$ (0.25)	$ (0.10)
Discontinued operations		0	0	0	0.20
Diluted, net (loss) earnings per share		$ (0.07)	$ (0.04)	$ (0.25)	$ 0.10
Common Class A [Member]
Basic net income (loss) per share
Allocation of net loss - continuing operations		$ (35,643)	$ (24,522)	$ (132,567)	$ (56,414)
Less: Allocation of net income attributable to noncontrolling interests		2,175	2,991	8,843	9,613
Allocation of net loss attributable to common stockholders - continuing operations		(37,818)	(27,513)	(141,410)	(66,027)
Net loss from discontinued operations		0	0	0	132,966
Net loss attributable to Groupon, Inc.		$ (37,818)	$ (27,513)	$ (141,410)	$ 66,939
Basic, weighted average number of shares outstanding		572,816,215	642,494,809	575,890,315	661,902,654
Continuing operations		$ (0.07)	$ (0.04)		$ (0.10)
Discontinued operations		0	0		0.20
Basic, net (loss) earnings per share		$ (0.07)	$ (0.04)		$ 0.10
Diluted net income (loss) per share
Allocation of net income attributable to common stockholders		$ (37,818)	$ (27,513)	$ (141,410)	$ 66,939
Basic, weighted average number of shares outstanding		572,816,215	642,494,809	575,890,315	661,902,654
Conversion of Class B	[1]	0	0	0	0
Diluted, weighted average number of shares outstanding	[1]	572,816,215	642,494,809	575,890,315	661,902,654
Continuing operations		$ (0.07)	$ (0.04)		$ (0.10)
Discontinued operations		0	0		0.20
Diluted, net (loss) earnings per share		$ (0.07)	$ (0.04)		$ 0.10
Common Class B [Member]
Basic net income (loss) per share
Allocation of net loss - continuing operations		$ (149)	$ (91)	$ (552)	$ (205)
Less: Allocation of net income attributable to noncontrolling interests		9	11	37	35
Allocation of net loss attributable to common stockholders - continuing operations		(158)	(102)	(589)	(240)
Net loss from discontinued operations		0	0	0	497
Net loss attributable to Groupon, Inc.		$ (158)	$ (102)	$ (589)	$ 257
Basic, weighted average number of shares outstanding		2,399,976	2,399,976	2,399,976	2,399,976
Continuing operations		$ (0.07)	$ (0.04)	$ (0.25)	$ (0.10)
Discontinued operations		0	0	0	0.20
Basic, net (loss) earnings per share		$ (0.07)	$ (0.04)	$ (0.25)	$ 0.10
Diluted net income (loss) per share
Allocation of net income attributable to common stockholders		$ (158)	$ (102)	$ (589)	$ 257
Basic, weighted average number of shares outstanding		2,399,976	2,399,976	2,399,976	2,399,976
Conversion of Class B	[1]	0	0	0	0
Diluted, weighted average number of shares outstanding	[1]	2,399,976	2,399,976	2,399,976	2,399,976
Continuing operations		$ (0.07)	$ (0.04)	$ (0.25)	$ (0.10)
Discontinued operations		0	0	0	0.20
Diluted, net (loss) earnings per share		$ (0.07)	$ (0.04)	$ (0.25)	$ 0.10
Continuing Operations [Member] | Common Class A [Member]
Diluted net income (loss) per share
Allocation of net loss attributable to common stockholders for basic computation		$ (37,818)	$ (27,513)	$ (141,410)	$ (66,027)
Reallocation of net income attributable to common stockholders as a result of conversion of Class B	[1]	0	0	0	0
Interest on Convertible Debt, Net of Tax		0		0
Allocation of net income attributable to common stockholders		(37,818)	(27,513)	(141,410)	(66,027)
Continuing Operations [Member] | Common Class B [Member]
Diluted net income (loss) per share
Allocation of net loss attributable to common stockholders for basic computation		(158)	(102)	(589)	(240)
Reallocation of net income attributable to common stockholders as a result of conversion of Class B	[1]	0	0	0	0
Interest on Convertible Debt, Net of Tax			0		0
Allocation of net income attributable to common stockholders		(158)	(102)	(589)	(240)
Discontinued Operations [Member] | Common Class A [Member]
Diluted net income (loss) per share
Allocation of net loss attributable to common stockholders for basic computation		0	0	0	132,966
Reallocation of net income attributable to common stockholders as a result of conversion of Class B	[1]	0	0	0	0
Allocation of net income attributable to common stockholders		0	0	0	132,966
Discontinued Operations [Member] | Common Class B [Member]
Diluted net income (loss) per share
Allocation of net loss attributable to common stockholders for basic computation		0	0	0	497
Reallocation of net income attributable to common stockholders as a result of conversion of Class B	[1]	0	0	0	0
Allocation of net income attributable to common stockholders		$ 0	$ 0	$ 0	$ 497
[1]	Other dilutive items includes employee stock options, restricted shares, RSUs, convertible senior notes and warrants. The impact of the conversion of Class B common stock into Class A common stock, outstanding equity awards and outstanding convertible senior notes and warrants have not been reflected in the diluted income (loss) per share calculation for the three and nine months ended September 30, 2016 and 2015 because the effect on net income (loss) per share from continuing operations would be antidilutive.

Fair Value Measurements Fair Va

Fair Value Measurements Fair Value, Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	$ 123,424	$ 125,018	$ 130,725		$ 136,361	$ 122,525	$ 0
Available-for-sale securities	27,108		32,950
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value	14,626	14,788	10,781	$ 9,605	10,273	233	1,983
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	237,070		305,179
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	123,424		130,725
Contingent Consideration, Fair Value Disclosure	14,626		10,781
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	237,070		305,179
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	0		0
Contingent Consideration, Fair Value Disclosure	0		0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	0		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	0		0
Contingent Consideration, Fair Value Disclosure	0		0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	0		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value			130,725
Contingent Consideration, Fair Value Disclosure			10,781
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value	14,626
Convertible debt securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	9,931		10,116
Convertible debt securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0		0
Convertible debt securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0		0
Convertible debt securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities			10,116
Redeemable preferred shares [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	17,177		22,834
Redeemable preferred shares [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0		0
Redeemable preferred shares [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0		0
Redeemable preferred shares [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities			22,834
Redeemable preferred shares [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	17,177	22,343	22,834		4,934	4,881	4,910
Redeemable preferred shares [Member] | Redeemable preferred shares [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	17,177
Convertible debt securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	9,931	$ 10,573	$ 10,116		$ 7,882	$ 8,026	$ 2,527
Convertible debt securities [Member] | Convertible debt securities [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	$ 9,931

Income (Loss) Per Share of Cl61

Income (Loss) Per Share of Class A and Class B Common Stock Schedule of Equity Antidilutive Securities (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities, Amount	127,352,344	46,408,132	93,434,199	44,933,395
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities, Amount	1,085,188	1,778,711	1,263,796	1,966,846
Restricted Stock Units (RSUs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities, Amount	31,375,699	41,788,616	35,119,921	41,004,715
Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities, Amount	1,219,018	1,740,104	1,377,116	1,108,814
Employee Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities, Amount	1,079,839	1,100,701	1,237,057	853,020
Convertible Debt [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities, Amount	46,296,300	0	30,185,866	0
Warrant [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities, Amount	46,296,300	0	24,250,443	0
Performance Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock Granted, Value, Share-based Compensation, Gross			389,046

Fair Value Measurements Fair 62

Fair Value Measurements Fair Value, Reconciliation of Level 3 - Assets (Details) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
		Sep. 30, 2016		Sep. 30, 2015	Sep. 30, 2016		Sep. 30, 2015		Mar. 31, 2016	Dec. 31, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Purchases of Convertible Debt		$ 0		$ 0	$ 0		$ 5,000
Proceeds from Sale of Investment Projects		(1,685)			(1,685)		(1,231)
Fair Value, Option, Changes in Fair Value, Gain (Loss)		(1,594)		(2,564)	(7,301)		(2,114)
AFS Securities, Beginning Asset Value				136,361	130,725		0
AFS Securities, Ending Asset Value		123,424			123,424
Unrealized Gains (Losses) Still Held - Assets		(1,594)	[1]	(2,564)	(7,301)	[1]	(2,114)	[1]
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value		14,626		9,605	14,626		9,605		$ 14,788	$ 10,781	$ 10,273	$ 233	$ 1,983
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements		0		0	0		(716)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases, (Sales), Issuances, (Settlements)		0		0	(285)		(331)
Gain from changes in fair value of contingent consideration	[2]	(162)		435	4,130		(268)
Fair Value, Measurement with Unobservable Inputs, Unrealized Gain Loss	[1]	(162)		435	4,004		(656)
Available-for-sale Investment Transfer to Cost Method Investment		(4,574)			(4,574)
Convertible debt securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings	[3]	477		218	714		405
AFS Securities, Beginning Asset Value				7,882	10,116		2,527
AFS Debt Security, (losses) included in OCI		566		(362)	786		(50)
AFS Securities, Ending Asset Value		9,931			9,931
Unrealized Gains (Losses) Still Held - Assets	[1]	1,043		(144)	1,500		355
Redeemable preferred shares [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
AFS Securities, Beginning Asset Value				4,934	22,834		4,910
AFS Debt Security, (losses) included in OCI		(592)		53	(1,083)		24
AFS Securities, Ending Asset Value		17,177			17,177
Unrealized Gains (Losses) Still Held - Assets	[1]	(592)		53	(1,083)		$ 24
Retained Investment in Business [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
AFS Securities, Ending Asset Value		16,400			16,400
Monster LP [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, Option, Changes in Fair Value, Gain (Loss)		2,300		$ (2,564)	900
2016 [Member] | Retained Investment in Business [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
AFS Securities, Ending Asset Value		0			0
2015 [Member] | Retained Investment in Business [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
AFS Securities, Ending Asset Value		$ 138,475			$ 138,475
[1]	Represents the unrealized losses or gains recorded in earnings and/or other comprehensive income (loss) during the period for assets and liabilities classified as Level 3 that are still held (or outstanding) at the end of the period.
[2]	Changes in the fair value of contingent consideration liabilities are classified within "Acquisition-related expense (benefit), net" on the condensed consolidated statements of operations.
[3]	Represents accretion of interest income and changes in the fair value of an embedded derivative.

Fair Value Measurements Fair 63

Fair Value Measurements Fair Value, Reconciliation of Level 3 - Liabilities (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Mar. 31, 2016	Dec. 31, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value		$ 123,424		$ 123,424		$ 125,018	$ 130,725	$ 136,361	$ 122,525	$ 0
Contingent Consideration, Beginning Value			$ 10,273	10,781	$ 1,983
Contingent Consideration, Reclass		0	0	(285)	(331)
(Gain) loss, net from changes in fair value of contingent consideration	[1]	(162)	435	4,130	(268)
Contingent Consideration, Ending Value		14,626	9,605	14,626	9,605
Fair Value, Measurement with Unobservable Inputs, Unrealized Gain Loss	[2]	(162)	$ 435	4,004	$ (656)
Convertible debt securities [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value		$ 9,931		$ 9,931		$ 10,573	$ 10,116	$ 7,882	$ 8,026	$ 2,527
[1]	Changes in the fair value of contingent consideration liabilities are classified within "Acquisition-related expense (benefit), net" on the condensed consolidated statements of operations.
[2]	Represents the unrealized losses or gains recorded in earnings and/or other comprehensive income (loss) during the period for assets and liabilities classified as Level 3 that are still held (or outstanding) at the end of the period.

Fair Value Measurements Financi

Fair Value Measurements Financial Assets and Liabilities, Not Measured at Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cost method investments	$ 30,085	$ 14,561
Cost Method Investments, Fair Value Disclosure	$ 32,632	$ 15,922

Segment Information Segment Inf

Segment Information Segment Information (Details) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015		Sep. 30, 2016		Sep. 30, 2015
Segment Reporting Information [Line Items]
Number of Reportable Segments					3
Revenue		$ 720,468	$ 713,595		$ 2,208,469		$ 2,202,346
Segment cost of revenue and operating expenses	[1],[2]	721,012	747,522		2,227,272		2,166,357
Segment operating income (loss)	[1]	(544)	(33,927)		(18,803)		35,989
Share-based Compensation	[3]	26,150	35,432		94,079		109,043
Acquisition-related (benefit) expense, net		(9)	1,064		4,305		1,300
Income (loss) from operations		(26,685)	(70,423)		(117,187)		(74,354)
Other expense, net		(7,028)	(8,160)		(14,303)		(25,146)
Loss from continuing operations before provision for income taxes		(33,713)	(78,583)		(131,490)		(99,500)
Provision for income taxes		2,079	(53,970)		1,629		(42,881)
Net loss from continuing operations		(35,792)	(24,613)		(133,119)		(56,619)
Net loss from discontinued operations		0	0		0		133,463
Net loss		(35,792)	(24,613)		(133,119)		76,844
Restructuring charges		1,459	24,146		29,988		24,146
Share-based Compensation		26,442	35,575		94,750	[3]	109,204	[3]
Loss Contingency Accrual, Period Increase (Decrease)							37,500
Prepaid Marketing Write-off							6,700
North America [Member]
Segment Reporting Information [Line Items]
Restructuring Charges ex. SBC		1,000			6,800		1,400
Revenue	[4]	483,281	463,931		1,501,016		1,425,095
Segment cost of revenue and operating expenses	[1],[2]	483,036	494,843	[5]	1,510,731		1,404,472	[5]
Segment operating income (loss)	[1]	245	(30,912)		(9,715)		20,623
Acquisition-related (benefit) expense, net		(9)	1,064		4,305		1,300
Restructuring charges		1,000			9,400		1,400
Share-based Compensation		24,725	30,324		83,668		95,607
EMEA [Member]
Segment Reporting Information [Line Items]
Restructuring Charges ex. SBC		(200)			13,900		19,700
Revenue	[4]	196,573	199,287		583,848		619,554
Segment cost of revenue and operating expenses	[1],[2]	192,692	195,397	[6]	570,294		586,343	[6]
Segment operating income (loss)	[1]	3,881	3,890		13,554		33,211
Acquisition-related (benefit) expense, net		0	0		0		0
Restructuring charges		(200)			16,000		19,700
Share-based Compensation		298	3,441		6,153		8,881
ROW [Member]
Segment Reporting Information [Line Items]
Restructuring Charges ex. SBC		700			4,600		3,000
Revenue		40,614	50,377		123,605		157,697
Segment cost of revenue and operating expenses	[1],[2]	45,284	57,282		146,247		175,542
Segment operating income (loss)	[1]	(4,670)	(6,905)		(22,642)		(17,845)
Acquisition-related (benefit) expense, net		0	0		0		0
Restructuring charges		700			4,600		3,000
Share-based Compensation		1,419	1,810		4,929		4,716
Other Income [Member]
Segment Reporting Information [Line Items]
Share-based Compensation		300	$ 100		$ 700		$ 200
Sales Revenue, Net [Member]
Segment Reporting Information [Line Items]
Concentration of risk, percentage			0.00%		10.00%		0.00%
Switzerland
Segment Reporting Information [Line Items]
Revenue		130,600	$ 112,100		$ 374,100		$ 343,300
United States
Segment Reporting Information [Line Items]
Revenue		$ 476,300	$ 457,700		1,477,700		$ 1,405,300
Acceleration of Share-Based Compensation [Member]
Segment Reporting Information [Line Items]
Restructuring charges					4,700
Acceleration of Share-Based Compensation [Member] | North America [Member]
Segment Reporting Information [Line Items]
Restructuring charges					2,600
Acceleration of Share-Based Compensation [Member] | EMEA [Member]
Segment Reporting Information [Line Items]
Restructuring charges					2,100
Acceleration of Share-Based Compensation [Member] | ROW [Member]
Segment Reporting Information [Line Items]
Restructuring charges					$ 0
[1]	Segment cost of revenue and operating expenses and segment operating income (loss) exclude stock-based compensation and acquisition-related (benefit) expense, net. This presentation corresponds to the measure of segment profit or loss that the Company's chief operating decision-maker uses in assessing segment performance and making resource allocation decisions. The following table summarizes the Company's stock-based compensation expense and acquisition-related expense (benefit), net by reportable segment for the three and nine months ended September 30, 2016 and 2015 (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Stock-based compensation Acquisition-related Stock-based compensation Acquisition-related Stock-based compensation Acquisition-related Stock-based compensation Acquisition-relatedNorth America $24,725 $(9) $30,324 $1,064 $83,668 $4,305 $95,607 $1,300EMEA 298 — 3,441 — 6,153 — 8,881 —Rest of World 1,419 — 1,810 — 4,929 — 4,716 —Consolidated $26,442 $(9) $35,575 $1,064 $94,750 $4,305 $109,204 $1,300
[2]	Segment cost of revenue and operating expenses for the three months ended September 30, 2016 includes restructuring charges of $1.0 million in North America, $(0.2) million in EMEA and $0.7 million in Rest of World. Segment cost of revenue and operating expenses for the nine months ended September 30, 2016 includes restructuring charges of $6.8 million in North America (which excludes $2.6 million of stock-based compensation), $13.9 million in EMEA (which excludes $2.1 million of stock-based compensation) and $4.6 million in Rest of World (which excludes $0.02 million of stock-based compensation). Segment cost of revenue and operating expenses for the three and nine months ended September 30, 2015 includes restructuring charges of $1.4 million in North America, $19.7 million in EMEA and $3.0 million in Rest of World. See Note 9, "Restructuring," for additional information.
[3]	Includes stock-based compensation classified within cost of revenue, marketing expense, selling, general and administrative expense and restructuring charges. Other income (expense), net, includes $0.3 million and $0.7 million of additional stock-based compensation for the three and nine months ended September 30, 2016 and $0.1 million and $0.2 million for the three and nine months ended September 30, 2015.
[4]	North America includes revenue from the United States of $476.3 million and $457.7 million for the three months ended September 30, 2016 and 2015, respectively, and $1,477.7 million and $1,405.3 million for the nine months ended September 30, 2016 and 2015, respectively. EMEA includes revenue from Switzerland of $130.6 million and $112.1 million for the three months ended September 30, 2016 and 2015, respectively, and $374.1 million and $343.3 million for the nine months ended September 30, 2016 and 2015, respectively. There were no other individual countries that represented more than 10% of consolidated total revenue for the three and nine months ended September 30, 2016 and 2015.
[5]	Segment cost of revenue and operating expenses for North America for the three and nine months ended September 30, 2015 includes a $37.5 million expense related to an increase in the Company's contingent liability for its securities litigation matter. See Note 7, "Commitments and Contingencies," for additional information.
[6]	Segment cost of revenue and operating expenses for EMEA for the three and nine months ended September 30, 2015 includes a $6.7 million expense for the write-off of a prepaid asset related to a marketing program that was discontinued because the counterparty ceased operations.

Segment Information Total Asset

Segment Information Total Assets (Details) - USD ($) $ in Thousands		9 Months Ended	12 Months Ended
		Sep. 30, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Assets, Continuing Operations		$ 1,613,541	$ 1,796,264
North America [Member]
Segment Reporting Information [Line Items]
Assets, Continuing Operations	[1]	977,064	1,063,595
EMEA [Member]
Segment Reporting Information [Line Items]
Assets, Continuing Operations		419,635	508,353
ROW [Member]
Segment Reporting Information [Line Items]
Assets, Continuing Operations		$ 216,842	$ 224,316
Assets, Total [Member]
Segment Reporting Information [Line Items]
Concentration of risk, percentage		10.00%	0.00%
United States
Segment Reporting Information [Line Items]
Assets, Continuing Operations		$ 925,500	$ 1,018,200
[1]	North America contains assets from the United States of $925.5 million and $1,018.2 million as of September 30, 2016 and December 31, 2015, respectively. There were no other individual countries that represented more than 10% of consolidated total assets as of September 30, 2016 and December 31, 2015

Segment Information Revenue by

Segment Information Revenue by Segment and Category (Details) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016USD ($)	Sep. 30, 2015USD ($)	Sep. 30, 2016USD ($)	Sep. 30, 2015USD ($)
Gross Profit		$ 314,117	$ 328,912	$ 987,033	$ 1,013,325
Gross Profit, Services		259,086	262,480	$ 793,820	831,617
Primary Categories				3
Third party and other		309,836	326,306	$ 962,533	1,027,273
Revenue, services		295,859	302,029	912,768	954,835
Direct		410,632	387,289	1,245,936	1,175,073
Total revenue		720,468	713,595	2,208,469	2,202,346
North America [Member]
Gross Profit		201,661	191,243	634,778	582,290
Gross Profit, Services		170,130	156,442	525,006	492,968
Revenue, services		197,461	185,180	616,068	580,452
Total revenue	[1]	483,281	463,931	1,501,016	1,425,095
EMEA [Member]
Gross Profit		85,059	103,516	270,107	322,840
Gross Profit, Services		66,349	78,611	201,460	250,576
Revenue, services		71,447	84,342	215,836	270,238
Total revenue	[1]	196,573	199,287	583,848	619,554
ROW [Member]
Gross Profit		27,397	34,153	82,148	108,195
Gross Profit, Services		22,607	27,427	67,354	88,073
Revenue, services		26,951	32,507	80,864	104,145
Total revenue		40,614	50,377	123,605	157,697
Local [Member]
Third party and other	[2]	256,677	260,939	800,014	831,123
Local [Member] | North America [Member]
Third party and other	[2]	176,220	163,786	552,512	517,111
Local [Member] | EMEA [Member]
Third party and other	[2]	58,581	70,781	181,083	228,860
Local [Member] | ROW [Member]
Third party and other	[2]	21,876	26,372	66,419	85,152
Travel [Member]
Third party and other		39,182	41,090	112,754	123,712
Travel [Member] | North America [Member]
Third party and other		21,241	21,394	63,556	63,341
Travel [Member] | EMEA [Member]
Third party and other		12,866	13,561	34,753	41,378
Travel [Member] | ROW [Member]
Third party and other		5,075	6,135	14,445	18,993
Goods [Member]
Gross Profit		55,031	66,432	193,213	181,708
Third party and other		13,977	24,277	49,765	72,438
Direct		410,632	387,289	1,245,936	1,175,073
Total revenue		424,609	411,566	1,295,701	1,247,511
Goods [Member] | North America [Member]
Gross Profit		31,531	34,801	109,772	89,322
Third party and other		1,965	1,643	6,319	3,962
Direct		283,855	277,108	878,629	840,681
Total revenue		285,820	278,751	884,948	844,643
Goods [Member] | EMEA [Member]
Gross Profit		18,710	24,905	68,647	72,264
Third party and other		4,789	11,837	20,792	33,517
Direct		120,337	103,108	347,220	315,799
Total revenue		125,126	114,945	368,012	349,316
Goods [Member] | ROW [Member]
Gross Profit		4,790	6,726	14,794	20,122
Third party and other		7,223	10,797	22,654	34,959
Direct		6,440	7,073	20,087	18,593
Total revenue		13,663	17,870	42,741	53,552
Third party and other [Member] | Local [Member]
Gross Profit	[3]	225,985	227,654	701,437	728,358
Third party and other [Member] | Local [Member] | North America [Member]
Gross Profit	[3]	152,873	138,798	475,703	441,148
Third party and other [Member] | Local [Member] | EMEA [Member]
Gross Profit	[3]	54,467	66,288	169,579	213,914
Third party and other [Member] | Local [Member] | ROW [Member]
Gross Profit	[3]	18,645	22,568	56,155	73,296
Third party and other [Member] | Travel [Member]
Gross Profit		33,101	34,826	92,383	103,259
Third party and other [Member] | Travel [Member] | North America [Member]
Gross Profit		17,257	17,644	49,303	51,820
Third party and other [Member] | Travel [Member] | EMEA [Member]
Gross Profit		11,882	12,323	31,881	36,662
Third party and other [Member] | Travel [Member] | ROW [Member]
Gross Profit		3,962	4,859	11,199	14,777
Third party and other [Member] | Goods [Member]
Gross Profit		10,331	17,776	37,713	50,364
Third party and other [Member] | Goods [Member] | North America [Member]
Gross Profit		1,509	1,359	5,201	3,201
Third party and other [Member] | Goods [Member] | EMEA [Member]
Gross Profit		4,156	10,025	18,027	27,997
Third party and other [Member] | Goods [Member] | ROW [Member]
Gross Profit		4,666	$ 6,392	$ 14,485	$ 19,166
Sales Revenue, Net [Member]
Concentration of risk, percentage			0.00%	10.00%	0.00%
United States
Total revenue		476,300	$ 457,700	$ 1,477,700	$ 1,405,300
SWITZERLAND
Total revenue		$ 130,600	$ 112,100	$ 374,100	$ 343,300
[1]	North America includes revenue from the United States of $476.3 million and $457.7 million for the three months ended September 30, 2016 and 2015, respectively, and $1,477.7 million and $1,405.3 million for the nine months ended September 30, 2016 and 2015, respectively. EMEA includes revenue from Switzerland of $130.6 million and $112.1 million for the three months ended September 30, 2016 and 2015, respectively, and $374.1 million and $343.3 million for the nine months ended September 30, 2016 and 2015, respectively. There were no other individual countries that represented more than 10% of consolidated total revenue for the three and nine months ended September 30, 2016 and 2015.
[2]	Includes revenue from deals with local and national merchants and through local events.
[3]	Includes gross profit from deals with local and national merchants and through local events.

Segment Information Gross Profi

Segment Information Gross Profit by Segment and Category (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Gross Profit by Category [Line Items]
Gross Profit, Services		$ 259,086	$ 262,480	$ 793,820	$ 831,617
Gross Profit		314,117	328,912	987,033	1,013,325
North America [Member]
Gross Profit by Category [Line Items]
Gross Profit, Services		170,130	156,442	525,006	492,968
Gross Profit		201,661	191,243	634,778	582,290
EMEA [Member]
Gross Profit by Category [Line Items]
Gross Profit, Services		66,349	78,611	201,460	250,576
Gross Profit		85,059	103,516	270,107	322,840
ROW [Member]
Gross Profit by Category [Line Items]
Gross Profit, Services		22,607	27,427	67,354	88,073
Gross Profit		27,397	34,153	82,148	108,195
Local [Member] | Third party and other [Member]
Gross Profit by Category [Line Items]
Gross Profit	[1]	225,985	227,654	701,437	728,358
Local [Member] | North America [Member] | Third party and other [Member]
Gross Profit by Category [Line Items]
Gross Profit	[1]	152,873	138,798	475,703	441,148
Local [Member] | EMEA [Member] | Third party and other [Member]
Gross Profit by Category [Line Items]
Gross Profit	[1]	54,467	66,288	169,579	213,914
Local [Member] | ROW [Member] | Third party and other [Member]
Gross Profit by Category [Line Items]
Gross Profit	[1]	18,645	22,568	56,155	73,296
Goods [Member]
Gross Profit by Category [Line Items]
Gross Profit		55,031	66,432	193,213	181,708
Goods [Member] | Third party and other [Member]
Gross Profit by Category [Line Items]
Gross Profit		10,331	17,776	37,713	50,364
Goods [Member] | Direct [Member]
Gross Profit by Category [Line Items]
Gross Profit		44,700	48,656	155,500	131,344
Goods [Member] | North America [Member]
Gross Profit by Category [Line Items]
Gross Profit		31,531	34,801	109,772	89,322
Goods [Member] | North America [Member] | Third party and other [Member]
Gross Profit by Category [Line Items]
Gross Profit		1,509	1,359	5,201	3,201
Goods [Member] | North America [Member] | Direct [Member]
Gross Profit by Category [Line Items]
Gross Profit		30,022	33,442	104,571	86,121
Goods [Member] | EMEA [Member]
Gross Profit by Category [Line Items]
Gross Profit		18,710	24,905	68,647	72,264
Goods [Member] | EMEA [Member] | Third party and other [Member]
Gross Profit by Category [Line Items]
Gross Profit		4,156	10,025	18,027	27,997
Goods [Member] | EMEA [Member] | Direct [Member]
Gross Profit by Category [Line Items]
Gross Profit		14,554	14,880	50,620	44,267
Goods [Member] | ROW [Member]
Gross Profit by Category [Line Items]
Gross Profit		4,790	6,726	14,794	20,122
Goods [Member] | ROW [Member] | Third party and other [Member]
Gross Profit by Category [Line Items]
Gross Profit		4,666	6,392	14,485	19,166
Goods [Member] | ROW [Member] | Direct [Member]
Gross Profit by Category [Line Items]
Gross Profit		124	334	309	956
Travel [Member] | Third party and other [Member]
Gross Profit by Category [Line Items]
Gross Profit		33,101	34,826	92,383	103,259
Travel [Member] | North America [Member] | Third party and other [Member]
Gross Profit by Category [Line Items]
Gross Profit		17,257	17,644	49,303	51,820
Travel [Member] | EMEA [Member] | Third party and other [Member]
Gross Profit by Category [Line Items]
Gross Profit		11,882	12,323	31,881	36,662
Travel [Member] | ROW [Member] | Third party and other [Member]
Gross Profit by Category [Line Items]
Gross Profit		$ 3,962	$ 4,859	$ 11,199	$ 14,777
[1]	Includes gross profit from deals with local and national merchants and through local events.