v2.4.0.8

Stockholders' Equity and Stock-Based Compensation Performance Share Unit Activity (Details) (Performance Shares [Member], USD $)	6 Months Ended
	Jun. 30, 2014
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance Share Units, Shares Granted	2,000,000
Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 8.07

X

- Definition

Performance Share Units, Shares Granted

+ References

No definition available.

+ Details

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

X

- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Details

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