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Segment Information Tangible property and equipment (Details) (USD $) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013
Segment Reporting Information [Line Items] |  |  |  |
Tangible property and equipment | 103,803,000 grpn_Tangiblepropertyandequipment |  | $ 75,639,000 grpn_Tangiblepropertyandequipment |
North America [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Tangible property and equipment | 63,915,000 grpn_Tangiblepropertyandequipment / us-gaap_StatementBusinessSegmentsAxis = us-gaap_NorthAmericaMember | [1] | 43,126,000 grpn_Tangiblepropertyandequipment / us-gaap_StatementBusinessSegmentsAxis = us-gaap_NorthAmericaMember | [1]
EMEA [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Tangible property and equipment | 28,721,000 grpn_Tangiblepropertyandequipment / us-gaap_StatementBusinessSegmentsAxis = us-gaap_EMEAMember |  | 23,413,000 grpn_Tangiblepropertyandequipment / us-gaap_StatementBusinessSegmentsAxis = us-gaap_EMEAMember |
ROW [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Tangible property and equipment | 11,167,000 grpn_Tangiblepropertyandequipment / us-gaap_StatementBusinessSegmentsAxis = grpn_RowMember | [2] | 9,100,000 grpn_Tangiblepropertyandequipment / us-gaap_StatementBusinessSegmentsAxis = grpn_RowMember | [2]
Property, Plant and Equipment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Concentration of risk, percentage | 10.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_PropertyPlantAndEquipmentMember |  |  |
IRELAND |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Tangible property and equipment | 0.12 grpn_Tangiblepropertyandequipment / dei_EntityByLocationAxis = country_IE |  |  |
Switzerland |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Tangible property and equipment | 0.11 grpn_Tangiblepropertyandequipment / dei_EntityByLocationAxis = country_CH |  |  |
[1] | Substantially all tangible property and equipment within North America is located in the United States.
[2] | Tangible property and equipment, net located within Ireland represented approximately 12% of the Company's consolidated tangible property and equipment, net as of December 31, 2014. Tangible property and equipment, net located within Switzerland represented approximately 11% of the Company's consolidated tangible property and equipment, net as of December 31, 2013. There were no other individual countries located outside of the United States that represented more than 10% of consolidated tangible property and equipment, net as of December 31, 2014 and 2013.

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- Definition Tangible property and equipment + References No definition available. + Details
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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13531-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592 + Details
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