v2.4.0.8

Stockholders' Equity and Stock-Based Compensation Employee Stock Purchase Plan (Details)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Stock Purchase Plan, shares authorized	10,000,000
Employee Stock Purchase Plan, issued shares	333,824	271,402

X

- Definition

Employee Stock Purchase Plan, issued shares

+ References

No definition available.

+ Details

Name:	grpn_EmployeeStockPurchasePlanissuedshares
Namespace Prefix:	grpn_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Employee Stock Purchase Plan, shares authorized

+ References

No definition available.

+ Details

Name:	grpn_EmployeeStockPurchasePlanSharesAuthorized
Namespace Prefix:	grpn_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration