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Segment Information Gross Profit by Segment and Category (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Gross Profit by Category [Line Items]                      
Gross profit $ 393,459us-gaap_GrossProfit $ 380,144us-gaap_GrossProfit $ 389,862us-gaap_GrossProfit $ 385,721us-gaap_GrossProfit $ 378,208us-gaap_GrossProfit $ 359,622us-gaap_GrossProfit $ 384,694us-gaap_GrossProfit $ 379,009us-gaap_GrossProfit $ 1,549,186us-gaap_GrossProfit $ 1,501,533us-gaap_GrossProfit $ 1,615,532us-gaap_GrossProfit
North America [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 731,983us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember		 712,837us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember		 655,309us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember
EMEA [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 556,914us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember		 570,126us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember		 689,184us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember
ROW [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 260,289us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember		 218,570us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember		 271,039us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember
Local [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 1,084,139us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember		 [1] 1,119,072us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember		 [1] 1,171,330us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember		 [1]
Local [Member] | Third party and other [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 1,084,139us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 [1] 1,119,854us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 [1] 1,169,421us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 [1]
Local [Member] | Direct [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 0us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 [1] (782)us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 [1] 1,909us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 [1]
Local [Member] | North America [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 581,067us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember		 [1] 581,941us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember		 [1] 543,625us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember		 [1]
Local [Member] | North America [Member] | Third party and other [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 581,067us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 [1] 582,723us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 [1] 541,716us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 [1]
Local [Member] | North America [Member] | Direct [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 0us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 [1] (782)us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 [1] 1,909us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 [1]
Local [Member] | EMEA [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 364,545us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember		 [1] 383,725us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember		 [1] 453,970us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember		 [1]
Local [Member] | EMEA [Member] | Third party and other [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 364,545us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 [1] 383,725us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 [1] 453,970us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 [1]
Local [Member] | EMEA [Member] | Direct [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 0us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 [1] 0us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 [1] 0us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 [1]
Local [Member] | ROW [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 138,527us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember		 [1] 153,406us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember		 [1] 173,735us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember		 [1]
Local [Member] | ROW [Member] | Third party and other [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 138,527us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 [1] 153,406us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 [1] 173,735us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 [1]
Local [Member] | ROW [Member] | Direct [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 0us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 [1] 0us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 [1] 0us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_LocalMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 [1]
Goods [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 315,564us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember		 251,098us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember		 314,092us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
Goods [Member] | Third party and other [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 152,032us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 171,375us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 282,988us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember
Goods [Member] | Direct [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 163,532us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 79,723us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 31,104us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember
Goods [Member] | North America [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 93,922us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember		 82,072us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember		 84,476us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember
Goods [Member] | North America [Member] | Third party and other [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 5,112us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 15,319us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 48,288us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember
Goods [Member] | North America [Member] | Direct [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 88,810us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 66,753us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 36,188us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember
Goods [Member] | EMEA [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 133,140us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember		 129,551us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember		 165,908us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember
Goods [Member] | EMEA [Member] | Third party and other [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 55,434us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 116,357us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 168,429us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember
Goods [Member] | EMEA [Member] | Direct [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 77,706us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 13,194us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 (2,521)us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember
Goods [Member] | ROW [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 88,502us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember		 39,475us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember		 63,708us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember
Goods [Member] | ROW [Member] | Third party and other [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 91,486us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 39,699us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 66,271us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember
Goods [Member] | ROW [Member] | Direct [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 (2,984)us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 (224)us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 (2,563)us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_GoodsMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember
Travel [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 149,483us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember		 131,363us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember		 130,110us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
Travel [Member] | Third party and other [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 149,483us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 131,363us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 129,581us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember
Travel [Member] | Direct [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 0us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 0us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 529us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember
Travel [Member] | North America [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 56,994us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember		 48,824us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember		 27,208us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember
Travel [Member] | North America [Member] | Third party and other [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 56,994us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 48,824us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 27,208us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember
Travel [Member] | North America [Member] | Direct [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 0us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 0us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 0us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_NorthAmericaMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember
Travel [Member] | EMEA [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 59,229us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember		 56,850us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember		 69,306us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember
Travel [Member] | EMEA [Member] | Third party and other [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 59,229us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 56,850us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 68,777us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember
Travel [Member] | EMEA [Member] | Direct [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 0us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 0us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 529us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EMEAMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember
Travel [Member] | ROW [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 33,260us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember		 25,689us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember		 33,596us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember
Travel [Member] | ROW [Member] | Third party and other [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 33,260us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 25,689us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember		 33,596us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember
/ us-gaap_StatementScenarioAxis
= grpn_ThirdPartyAndOtherMember
Travel [Member] | ROW [Member] | Direct [Member]                      
Gross Profit by Category [Line Items]                      
Gross profit                 $ 0us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 $ 0us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember		 $ 0us-gaap_GrossProfit
/ grpn_CategoryAxis
= grpn_TravelMember
/ us-gaap_StatementBusinessSegmentsAxis
= grpn_RowMember
/ us-gaap_StatementScenarioAxis
= grpn_DirectMember
[1] (1)Includes gross profit from deals with local and national merchants and through local events.