Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 1,071,913	$ 1,240,472
Accounts receivable, net	105,154us-gaap_AccountsReceivableNetCurrent	83,673us-gaap_AccountsReceivableNetCurrent
Deferred income taxes	16,271	27,938
Prepaid expense and other current assets	207,991	210,415
Total current assets	1,401,329us-gaap_AssetsCurrent	1,562,498us-gaap_AssetsCurrent
Property, equipment and software, net	182,475us-gaap_PropertyPlantAndEquipmentNet	134,423us-gaap_PropertyPlantAndEquipmentNet
Goodwill	447,810us-gaap_Goodwill	220,827us-gaap_Goodwill
Intangible assets, net	110,557	28,443
Investments	24,298us-gaap_Investments	20,652us-gaap_Investments
Deferred income taxes, non-current	41,835	35,941
Other non-current assets	19,293us-gaap_OtherAssetsNoncurrent	39,226us-gaap_OtherAssetsNoncurrent
Total Assets	2,227,597us-gaap_Assets	2,042,010us-gaap_Assets
Current liabilities:
Accounts payable	21,855us-gaap_AccountsPayableCurrent	27,573us-gaap_AccountsPayableCurrent
Accrued merchant and supplier payables	910,567grpn_Accruedmerchantandsupplierpayable	752,943grpn_Accruedmerchantandsupplierpayable
Accrued expenses	230,352us-gaap_AccruedLiabilitiesCurrent	226,986us-gaap_AccruedLiabilitiesCurrent
Deferred income taxes	32,510us-gaap_DeferredTaxLiabilitiesCurrent	47,558us-gaap_DeferredTaxLiabilitiesCurrent
Other current liabilities	130,312us-gaap_OtherLiabilitiesCurrent	132,718us-gaap_OtherLiabilitiesCurrent
Total current liabilities	1,325,596us-gaap_LiabilitiesCurrent	1,187,778us-gaap_LiabilitiesCurrent
Deferred income taxes, non-current	773	10,853
Other non-current liabilities	136,284us-gaap_LiabilitiesNoncurrent	131,697us-gaap_LiabilitiesNoncurrent
Total Liabilities	1,462,653us-gaap_Liabilities	1,330,328us-gaap_Liabilities
Commitments and contingencies
Stockholders' Equity
Additional paid-in capital	1,847,420us-gaap_AdditionalPaidInCapital	1,584,211us-gaap_AdditionalPaidInCapital
Treasury stock, at cost	(198,467)us-gaap_TreasuryStockValue	(46,587)us-gaap_TreasuryStockValue
Accumulated deficit	(921,960)	(848,870)
Accumulated other comprehensive income	35,763	24,830
Total Groupon, Inc. Stockholders' Equity	762,826us-gaap_StockholdersEquity	713,651us-gaap_StockholdersEquity
Noncontrolling interests	2,118us-gaap_MinorityInterest	(1,969)us-gaap_MinorityInterest
Total Equity	764,944	711,682
Total Liabilities and Equity	2,227,597	2,042,010
Common Class A [Member]
Stockholders' Equity
Common Stock, Value, Issued	70	67
Common Class B [Member]
Stockholders' Equity
Common Stock, Value, Issued	0	0
Common Stock [Member]
Stockholders' Equity
Common Stock, Value, Issued	$ 0	$ 0

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Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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The cumulative amount of the reporting entity's undistributed earnings or deficit.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.

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