$GRPN
Groupon, Inc. Stock $grpn

$grpn Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-K Financial Statement

#000149028121000023 Filed on February 25, 2021

Income Statement

Concept	2020 Q4	2020	2019 Q4
Revenue	$343.1M	$1.417B	$612.3M
YoY Change	-43.97%	-36.15%	-23.45%
Cost Of Revenue	$164.3M	$739.6M	$302.3M
YoY Change	-45.65%	-28.39%	-30.33%
Gross Profit	$178.8M	$677.3M	$310.0M
YoY Change	-42.33%	-42.9%	-15.31%
Gross Profit Margin	52.11%	47.8%	50.63%
Selling, General & Admin	$162.9M	$603.2M	$269.9M
YoY Change	-39.64%	-25.25%	-11.28%
% of Gross Profit	91.11%	89.06%	87.05%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$19.10M	$77.79M	$24.40M
YoY Change	-21.72%	-14.9%	-14.39%
% of Gross Profit	10.68%	11.49%	7.87%
Operating Expenses	$165.9M	$954.4M	$269.9M
YoY Change	-38.53%	-16.74%	-11.3%
Operating Profit	$12.90M	-$277.1M	$40.11M
YoY Change	-67.83%	-796.26%	-35.18%
Interest Expense	$4.500M	$33.19M	$48.90M
YoY Change	-90.8%	40.69%	-482.03%
% of Operating Profit	34.88%		121.93%
Other Income/Expense, Net	$0.00	-$16.97M	$400.0K
YoY Change	-100.0%	-68.18%	-200.0%
Pretax Income	$13.60M	-$294.1M	$79.40M
YoY Change	-82.87%	2073.28%	63.04%
Income Tax	-$300.0K	-$7.504M	$200.0K
% Of Pretax Income	-2.21%		0.25%
Net Earnings	$14.00M	-$287.9M	$77.04M
YoY Change	-81.83%	1186.73%	66.65%
Net Earnings / Revenue	4.08%	-20.32%	12.58%
Basic Earnings Per Share		-$10.07	$0.14
Diluted Earnings Per Share	$486.1K	-$10.07	$0.13
COMMON SHARES
Basic Shares Outstanding	28.81M shares	28.60M shares	564.7M shares
Diluted Shares Outstanding		28.60M shares

Balance Sheet

Concept	2020 Q4	2020	2019 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$850.6M	$850.6M	$750.9M
YoY Change	13.28%	13.28%	-10.71%
Cash & Equivalents	$850.6M	$850.6M	$750.9M
Short-Term Investments
Other Short-Term Assets	$12.02M	$33.70M	$24.78M
YoY Change	-51.48%	-35.07%	27.4%
Inventory	$1.300M	$1.300M	$25.40M
Prepaid Expenses	$18.04M		$27.08M
Receivables	$43.00M	$43.00M	$54.95M
Other Receivables	$5.400M	$5.400M	$4.700M
Total Short-Term Assets	$934.0M	$934.0M	$887.9M
YoY Change	5.19%	5.19%	-11.09%
LONG-TERM ASSETS
Property, Plant & Equipment	$85.28M	$160.6M	$125.0M
YoY Change	-31.75%	-31.16%	-12.69%
Goodwill	$214.7M		$325.0M
YoY Change	-33.94%		-0.15%
Intangibles	$30.15M		$35.29M
YoY Change	-14.57%		-22.27%
Long-Term Investments	$0.00	$37.70M	$1.405M
YoY Change	-100.0%	-50.78%	-98.1%
Other Assets	$22.73M	$34.30M	$28.61M
YoY Change	-20.52%	19.93%	36.29%
Total Long-Term Assets	$477.5M	$477.5M	$698.8M
YoY Change	-31.67%	-31.67%	8.6%
TOTAL ASSETS
Total Short-Term Assets	$934.0M	$934.0M	$887.9M
Total Long-Term Assets	$477.5M	$477.5M	$698.8M
Total Assets	$1.412B	$1.412B	$1.587B
YoY Change	-11.04%	-11.04%	-3.37%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$33.03M	$33.00M	$20.42M
YoY Change	61.77%	61.76%	-46.78%
Accrued Expenses	$295.0M	$550.4M	$260.2M
YoY Change	13.38%	-19.74%	-2.56%
Deferred Revenue	$11.22M		$17.95M
YoY Change	-37.48%
Short-Term Debt	$200.0M	$200.0M	$0.00
YoY Change
Long-Term Debt Due		$4.600M	$8.000M
YoY Change		-42.5%	-53.49%
Total Short-Term Liabilities	$939.0M	$939.0M	$821.5M
YoY Change	14.3%	14.3%	-14.17%
LONG-TERM LIABILITIES
Long-Term Debt	$230.2M	$230.2M	$220.7M
YoY Change	4.3%	4.3%	3.03%
Other Long-Term Liabilities	$44.43M	$128.5M	$44.99M
YoY Change	-1.24%	-11.68%	371.36%
Total Long-Term Liabilities	$44.43M	$358.7M	$44.99M
YoY Change	-1.24%	-2.05%	-55.32%
TOTAL LIABILITIES
Total Short-Term Liabilities	$939.0M	$939.0M	$821.5M
Total Long-Term Liabilities	$44.43M	$358.7M	$44.99M
Total Liabilities	$1.304B	$1.304B	$1.192B
YoY Change	9.41%	9.31%	-5.39%
SHAREHOLDERS EQUITY
Retained Earnings	-$1.321B		-$1.033B
YoY Change	27.88%		2.21%
Common Stock	$4.000K		$4.000K
YoY Change	0.0%		-94.74%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$922.7M		$922.7M
YoY Change	0.0%		5.15%
Treasury Stock Shares	10.29M shares		10.29M shares
Shareholders Equity	$107.7M	$107.7M	$393.9M
YoY Change
Total Liabilities & Shareholders Equity	$1.412B	$1.412B	$1.587B
YoY Change	-11.04%	-11.04%	-3.37%

Cashflow Statement

Concept	2020 Q4	2020	2019 Q4
OPERATING ACTIVITIES
Net Income	$14.00M	-$287.9M	$77.04M
YoY Change	-81.83%	1186.73%	66.65%
Depreciation, Depletion And Amortization	$19.10M	$77.79M	$24.40M
YoY Change	-21.72%	-14.9%	-14.39%
Cash From Operating Activities	$80.90M	-$63.60M	$201.4M
YoY Change	-59.83%	-189.22%	-37.82%
INVESTING ACTIVITIES
Capital Expenditures	-$12.90M	$48.71M	-$16.20M
YoY Change	-20.37%	-27.65%	-5.81%
Acquisitions		$0.00
YoY Change
Other Investing Activities	$0.00	$4.240M	$3.500M
YoY Change	-100.0%	13.43%	-1266.67%
Cash From Investing Activities	-$12.90M	-$20.12M	-$12.70M
YoY Change	1.57%	-70.23%	-27.43%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$0.00
YoY Change		-100.0%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-3.800M	$176.8M	-10.60M
YoY Change	-64.15%	-290.89%	-69.8%
NET CHANGE
Cash From Operating Activities	80.90M	-$63.60M	201.4M
Cash From Investing Activities	-12.90M	-$20.12M	-12.70M
Cash From Financing Activities	-3.800M	$176.8M	-10.60M
Net Change In Cash	64.20M	$98.43M	178.1M
YoY Change	-63.95%	-206.9%	-34.35%
FREE CASH FLOW
Cash From Operating Activities	$80.90M	-$63.60M	$201.4M
Capital Expenditures	-$12.90M	$48.71M	-$16.20M
Free Cash Flow	$93.80M	-$112.3M	$217.6M
YoY Change	-56.89%	-2939.67%	-36.21%

Facts In Submission

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CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
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CY2019	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic And Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicAndDilutedShare	0.09
CY2018	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic And Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicAndDilutedShare	0
CY2020	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-10.07
CY2019	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.79
CY2018	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.39
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	28604115	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	28370417	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	28325555	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	28604115	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	28370417	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	28325555	shares
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	34000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-322152000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-7216000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	4585000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	1751000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	10682000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	13067000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-323903000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-17898000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-8482000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	251845000	USD
CY2018	us-gaap	Tax Cuts And Jobs Act Of2017 Reclassification From Aoci To Retained Earnings Tax Effect TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect	0	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	4585000	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	81000	USD
CY2018	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	5634000	USD
CY2018	grpn	Shares Issued To Settle Liability Classified Awards SharesIssuedToSettleLiabilityClassifiedAwards	6436000	USD
CY2018	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	22709000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	70411000	USD
CY2018	us-gaap	Treasury Stock Value Acquired Par Value Method TreasuryStockValueAcquiredParValueMethod	10041000	USD
CY2018	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	12576000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	382611000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-7216000	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	40000	USD
CY2019	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	4083000	USD
CY2019	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	17413000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	89051000	USD
CY2019	us-gaap	Treasury Stock Value Acquired Par Value Method TreasuryStockValueAcquiredParValueMethod	45175000	USD
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	10935000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	395046000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-322152000	USD
CY2020	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1791000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	-11695000	USD
CY2020	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	9754000	USD
CY2020	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	45684000	USD
CY2020	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	2862000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	107674000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-286180000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	1988000	USD
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	382000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	2597000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0	USD
CY2020	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-286562000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-14292000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	1988000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	77792000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	91410000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	101330000	USD
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	9730000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	14355000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	14498000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	109486000	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	22351000	USD
CY2019	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2018	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2020	grpn	Restructuring Costs Impairment Charges RestructuringCostsImpairmentCharges	21622000	USD
CY2019	grpn	Restructuring Costs Impairment Charges RestructuringCostsImpairmentCharges	0	USD
CY2018	grpn	Restructuring Costs Impairment Charges RestructuringCostsImpairmentCharges	0	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	39010000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	81615000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	64821000	USD
CY2020	us-gaap	Impairment Of Investments ImpairmentOfInvestments	6684000	USD
CY2019	us-gaap	Impairment Of Investments ImpairmentOfInvestments	9961000	USD
CY2018	us-gaap	Impairment Of Investments ImpairmentOfInvestments	10156000	USD
CY2020	grpn	Observable Price Change Adjustments Investments Upward Adjustment ObservablePriceChangeAdjustmentsInvestmentsUpwardAdjustment	0	USD
CY2019	grpn	Observable Price Change Adjustments Investments Upward Adjustment ObservablePriceChangeAdjustmentsInvestmentsUpwardAdjustment	51397000	USD
CY2018	grpn	Observable Price Change Adjustments Investments Upward Adjustment ObservablePriceChangeAdjustmentsInvestmentsUpwardAdjustment	0	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-7101000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1485000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-5000000	USD
CY2020	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	-1405000	USD
CY2019	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	-72497000	USD
CY2018	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	-9064000	USD
CY2020	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	14621000	USD
CY2019	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	13200000	USD
CY2018	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	11916000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-13524000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-13577000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-32057000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-42249000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-3176000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-7166000	USD
CY2020	grpn	Increase Decrease In Operating Lease Right Of Use Asset IncreaseDecreaseInOperatingLeaseRightOfUseAsset	-22463000	USD
CY2019	grpn	Increase Decrease In Operating Lease Right Of Use Asset IncreaseDecreaseInOperatingLeaseRightOfUseAsset	-26226000	USD
CY2018	grpn	Increase Decrease In Operating Lease Right Of Use Asset IncreaseDecreaseInOperatingLeaseRightOfUseAsset	0	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	11414000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-17401000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	5805000	USD
CY2020	grpn	Increase Decrease In Accrued Merchant Payables IncreaseDecreaseInAccruedMerchantPayables	-142624000	USD
CY2019	grpn	Increase Decrease In Accrued Merchant Payables IncreaseDecreaseInAccruedMerchantPayables	-109176000	USD
CY2018	grpn	Increase Decrease In Accrued Merchant Payables IncreaseDecreaseInAccruedMerchantPayables	-45268000	USD
CY2020	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	36159000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-26071000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-31430000	USD
CY2020	grpn	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-36864000	USD
CY2019	grpn	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-28552000	USD
CY2018	grpn	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	0	USD
CY2020	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	18957000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	6360000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-13752000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	-63598000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	71283000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	190855000	USD
CY2020	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	0	USD
CY2019	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	0	USD
CY2018	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	0	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-63598000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	71283000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	190855000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	48711000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	67328000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	69695000	USD
CY2020	us-gaap	Proceeds From Sale Of Intangible Assets ProceedsFromSaleOfIntangibleAssets	0	USD
CY2019	us-gaap	Proceeds From Sale Of Intangible Assets ProceedsFromSaleOfIntangibleAssets	0	USD
CY2018	us-gaap	Proceeds From Sale Of Intangible Assets ProceedsFromSaleOfIntangibleAssets	1500000	USD
CY2020	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	31605000	USD
CY2019	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	3475000	USD
CY2018	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	8594000	USD
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	58119000	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	4240000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	3738000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	18262000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-21346000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-67591000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-135982000	USD
CY2020	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	1224000	USD
CY2019	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	0	USD
CY2018	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	0	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-20122000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-67591000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-135982000	USD
CY2020	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	200000000	USD
CY2019	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	0	USD
CY2018	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	0	USD
CY2020	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	1686000	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	2384000	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	45631000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	9585000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	10607000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	18105000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	24105000	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1791000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	4123000	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	5715000	USD
CY2020	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	2862000	USD
CY2019	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	10935000	USD
CY2018	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	12576000	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	8930000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	19687000	USD
CY2018	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	33023000	USD
CY2020	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	908000	USD
CY2019	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	0	USD
CY2018	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	1815000	USD
CY2020	grpn	Payments For Finance Leases Business Acquisitions PaymentsForFinanceLeasesBusinessAcquisitions	0	USD
CY2019	grpn	Payments For Finance Leases Business Acquisitions PaymentsForFinanceLeasesBusinessAcquisitions	0	USD
CY2018	grpn	Payments For Finance Leases Business Acquisitions PaymentsForFinanceLeasesBusinessAcquisitions	8391000	USD
CY2020	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	0	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	0	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-637000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	176798000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-92619000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-84417000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	6574000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	-3144000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	-11209000	USD
CY2020	grpn	Cash Cash Equivalentsand Restricted Cash Period Increase Decrease Including Cashfrom Discontinued Operations CashCashEquivalentsandRestrictedCashPeriodIncreaseDecreaseIncludingCashfromDiscontinuedOperations	99652000	USD
CY2019	grpn	Cash Cash Equivalentsand Restricted Cash Period Increase Decrease Including Cashfrom Discontinued Operations CashCashEquivalentsandRestrictedCashPeriodIncreaseDecreaseIncludingCashfromDiscontinuedOperations	-92071000	USD
CY2018	grpn	Cash Cash Equivalentsand Restricted Cash Period Increase Decrease Including Cashfrom Discontinued Operations CashCashEquivalentsandRestrictedCashPeriodIncreaseDecreaseIncludingCashfromDiscontinuedOperations	-40753000	USD
CY2020	grpn	Increase Decrease In Cash Classified Within Current Assets Of Discontinued Operations IncreaseDecreaseInCashClassifiedWithinCurrentAssetsOfDiscontinuedOperations	1224000	USD
CY2019	grpn	Increase Decrease In Cash Classified Within Current Assets Of Discontinued Operations IncreaseDecreaseInCashClassifiedWithinCurrentAssetsOfDiscontinuedOperations	0	USD
CY2018	grpn	Increase Decrease In Cash Classified Within Current Assets Of Discontinued Operations IncreaseDecreaseInCashClassifiedWithinCurrentAssetsOfDiscontinuedOperations	0	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	98428000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-92071000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-40753000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	752657000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	844728000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	885481000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	851085000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	752657000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	844728000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	12749000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	9145000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	9556000	USD
CY2020	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	0	USD
CY2019	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	0	USD
CY2018	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	18064000	USD
CY2020	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	522000	USD
CY2019	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	1021000	USD
CY2018	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	0	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	36864000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	36723000	USD
CY2018	us-gaap	Operating Lease Payments OperatingLeasePayments	0	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	0	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	3929000	USD
CY2018	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	0	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	16415000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	27293000	USD
CY2018	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	850587000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	750887000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	841021000	USD
CY2020Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	498000	USD
CY2019Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	1534000	USD
CY2018Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	3320000	USD
CY2020Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	0	USD
CY2019Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	236000	USD
CY2018Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	387000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	851085000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	752657000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	844728000	USD
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2
CY2020	grpn	Hosting Arrangement Service Contract Implementation Cost Capitalized Amount Capitalized HostingArrangementServiceContractImplementationCostCapitalizedAmountCapitalized	10500000	USD
CY2019	grpn	Hosting Arrangement Service Contract Implementation Cost Capitalized Amount Capitalized HostingArrangementServiceContractImplementationCostCapitalizedAmountCapitalized	7400000	USD
CY2020	grpn	Hosting Arrangement Service Contract Implementation Cost Amortization HostingArrangementServiceContractImplementationCostAmortization	1700000	USD
CY2019	grpn	Hosting Arrangement Service Contract Implementation Cost Amortization HostingArrangementServiceContractImplementationCostAmortization	0	USD
CY2020	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	ReclassificationsCertain reclassifications have been made to the consolidated financial statements of prior periods and the accompanying notes to conform to the current period presentation.
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-bottom:12pt;padding-left:36pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="margin-bottom:12pt;text-align:justify;text-indent:36pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Estimates in our consolidated financial statements include, but are not limited to, variable consideration from unredeemed vouchers; income taxes; leases; initial valuation and subsequent impairment testing of goodwill, other intangible assets and long-lived assets; investments; receivables; customer refunds and other reserves; contingent liabilities; and the useful lives of property, equipment and software and intangible assets. Actual results could differ materially from those estimates.</span></div>
	grpn	Numberof Countries Exitedinconnectionwith Discontinued Operations NumberofCountriesExitedinconnectionwithDiscontinuedOperations	12	country
	grpn	Numberof Countries Exitedinconnectionwith Discontinued Operations NumberofCountriesExitedinconnectionwithDiscontinuedOperations	12	country
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	400000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	2600000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	416334000	USD
CY2019Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	436384000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	331050000	USD
CY2019Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	311434000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	85284000	USD
CY2019Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	124950000	USD
CY2020Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	57900000	USD
CY2019Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	71100000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	77792000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	91410000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	101330000	USD
CY2020	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	58800000	USD
CY2019	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	56600000	USD
CY2018	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	53900000	USD
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	6700000	USD
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	18900000	USD
CY2018	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	30200000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	325491000	USD
CY2019	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-474000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	325017000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	109486000	USD
CY2020	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-832000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	214699000	USD
CY2020	us-gaap	Number Of Reporting Units NumberOfReportingUnits	3	reportingUnit
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	60616000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	30465000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	30151000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	100738000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	65446000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	35292000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	9700000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	14400000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	14500000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	8551000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	7955000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	6780000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	3065000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	1481000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	2319000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	30151000	USD
CY2020Q4	us-gaap	Investments Investments	37671000	USD
CY2019Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Upward Price Adjustment Annual Amount EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentAnnualAmount	51400000	USD
CY2019Q4	us-gaap	Investments Investments	76576000	USD
CY2018Q3	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	8600000	USD
CY2020	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	-1405000	USD
CY2019	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	-72497000	USD
CY2018	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	-9064000	USD
CY2018Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	24273000	USD
CY2019	us-gaap	Equity Securities Without Readily Determinable Fair Value Upward Price Adjustment Annual Amount EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentAnnualAmount	51397000	USD
CY2019	grpn	Equity Investment Dispositions EquityInvestmentDispositions	640000	USD
CY2019	grpn	Foreign Currency Translation Equity Investment ForeignCurrencyTranslationEquityInvestment	141000	USD
CY2019Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	75171000	USD
CY2020	us-gaap	Impairment Of Investments ImpairmentOfInvestments	6684000	USD
CY2020	grpn	Equity Investment Dispositions EquityInvestmentDispositions	33843000	USD
CY2020	grpn	Foreign Currency Translation Equity Investment ForeignCurrencyTranslationEquityInvestment	3027000	USD
CY2020Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	37671000	USD
CY2020Q4	grpn	Other Equity Method Investments Ownership Percentage OtherEquityMethodInvestmentsOwnershipPercentage	0.50
CY2020Q4	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	34000000.0	USD
CY2018	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	4600000	USD
CY2020	us-gaap	Interest Income Other InterestIncomeOther	6351000	USD
CY2019	us-gaap	Interest Income Other InterestIncomeOther	7744000	USD
CY2018	us-gaap	Interest Income Other InterestIncomeOther	6420000	USD
CY2020	us-gaap	Interest Expense InterestExpense	33192000	USD
CY2019	us-gaap	Interest Expense InterestExpense	23593000	USD
CY2018	us-gaap	Interest Expense InterestExpense	21909000	USD
CY2020	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	-1405000	USD
CY2019	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	-72497000	USD
CY2018	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	-9064000	USD
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	17919000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-5960000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-20325000	USD
CY2020	us-gaap	Impairment Of Investments ImpairmentOfInvestments	6684000	USD
CY2019	us-gaap	Impairment Of Investments ImpairmentOfInvestments	9961000	USD
CY2018	us-gaap	Impairment Of Investments ImpairmentOfInvestments	10156000	USD
CY2020	grpn	Observable Price Change Adjustments Investments Upward Adjustment ObservablePriceChangeAdjustmentsInvestmentsUpwardAdjustment	0	USD
CY2019	grpn	Observable Price Change Adjustments Investments Upward Adjustment ObservablePriceChangeAdjustmentsInvestmentsUpwardAdjustment	51397000	USD
CY2018	grpn	Observable Price Change Adjustments Investments Upward Adjustment ObservablePriceChangeAdjustmentsInvestmentsUpwardAdjustment	0	USD
CY2020	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	43000	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-459000	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	2026000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-16968000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-53329000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-53008000	USD
CY2020Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	1852000	USD
CY2019Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	2156000	USD
CY2020Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	1280000	USD
CY2019Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	25426000	USD
CY2020Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	18038000	USD
CY2019Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	27077000	USD
CY2020Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	5437000	USD
CY2019Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	4791000	USD
CY2020Q4	us-gaap	Other Assets Current OtherAssetsCurrent	15686000	USD
CY2019Q4	us-gaap	Other Assets Current OtherAssetsCurrent	24779000	USD
CY2020Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	40441000	USD
CY2019Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	82073000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	11593000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	4829000	USD
CY2020Q4	grpn	Deferred Contract Acquisition Costs DeferredContractAcquisitionCosts	5315000	USD
CY2019Q4	grpn	Deferred Contract Acquisition Costs DeferredContractAcquisitionCosts	10133000	USD
CY2020Q4	us-gaap	Hosting Arrangement Service Contract Implementation Cost Capitalized Before Accumulated Amortization HostingArrangementServiceContractImplementationCostCapitalizedBeforeAccumulatedAmortization	10402000	USD
CY2019Q4	us-gaap	Hosting Arrangement Service Contract Implementation Cost Capitalized Before Accumulated Amortization HostingArrangementServiceContractImplementationCostCapitalizedBeforeAccumulatedAmortization	7372000	USD
CY2020Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	5165000	USD
CY2019Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	4115000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	34327000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	28605000	USD
CY2020Q4	grpn	Merchantpayables Merchantpayables	303260000	USD
CY2019Q4	grpn	Merchantpayables Merchantpayables	366573000	USD
CY2020Q4	grpn	Payablestosuppliersofinventories Payablestosuppliersofinventories	107703000	USD
CY2019Q4	grpn	Payablestosuppliersofinventories Payablestosuppliersofinventories	174367000	USD
CY2020Q4	grpn	Accruedmerchantandsupplierpayable Accruedmerchantandsupplierpayable	410963000	USD
CY2019Q4	grpn	Accruedmerchantandsupplierpayable Accruedmerchantandsupplierpayable	540940000	USD
CY2020Q4	us-gaap	Customer Refund Liability Current CustomerRefundLiabilityCurrent	33173000	USD
CY2019Q4	us-gaap	Customer Refund Liability Current CustomerRefundLiabilityCurrent	22002000	USD
CY2020Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	54958000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	49009000	USD
CY2020Q4	us-gaap	Accrued Marketing Costs Current AccruedMarketingCostsCurrent	15299000	USD
CY2019Q4	us-gaap	Accrued Marketing Costs Current AccruedMarketingCostsCurrent	41110000	USD
CY2020Q4	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	13746000	USD
CY2019Q4	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	0	USD
CY2020Q4	grpn	Customer Credits Current CustomerCreditsCurrent	61006000	USD
CY2019Q4	grpn	Customer Credits Current CustomerCreditsCurrent	13764000	USD
CY2020Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	7862000	USD
CY2019Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	5044000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	11223000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	17951000	USD
CY2020Q4	grpn	Deferred Payroll Taxes Current DeferredPayrollTaxesCurrent	2922000	USD
CY2019Q4	grpn	Deferred Payroll Taxes Current DeferredPayrollTaxesCurrent	0	USD
CY2020Q4	grpn	Lease Liability Current LeaseLiabilityCurrent	37755000	USD
CY2019Q4	grpn	Lease Liability Current LeaseLiabilityCurrent	40768000	USD
CY2020Q4	grpn	Deferred Costs Cloud Computing Contract Incentives Current DeferredCostsCloudComputingContractIncentivesCurrent	3000000	USD
CY2019Q4	grpn	Deferred Costs Cloud Computing Contract Incentives Current DeferredCostsCloudComputingContractIncentivesCurrent	0	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	54055000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	70544000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	294999000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	260192000	USD
CY2020Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	25593000	USD
CY2019Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	30121000	USD
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	730000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	5831000	USD
CY2020Q4	us-gaap	Restructuring Reserve Noncurrent RestructuringReserveNoncurrent	385000	USD
CY2019Q4	us-gaap	Restructuring Reserve Noncurrent RestructuringReserveNoncurrent	0	USD
CY2020Q4	us-gaap	Deferred Income Taxes And Other Tax Liabilities Noncurrent DeferredIncomeTaxesAndOtherTaxLiabilitiesNoncurrent	3170000	USD
CY2019Q4	us-gaap	Deferred Income Taxes And Other Tax Liabilities Noncurrent DeferredIncomeTaxesAndOtherTaxLiabilitiesNoncurrent	3903000	USD
CY2020Q4	grpn	Deferred Payroll Taxes Noncurrent DeferredPayrollTaxesNoncurrent	2922000	USD
CY2019Q4	grpn	Deferred Payroll Taxes Noncurrent DeferredPayrollTaxesNoncurrent	0	USD
CY2020Q4	grpn	Deferred Costs Cloud Computing Contract Incentives Noncurrent DeferredCostsCloudComputingContractIncentivesNoncurrent	4250000	USD
CY2019Q4	grpn	Deferred Costs Cloud Computing Contract Incentives Noncurrent DeferredCostsCloudComputingContractIncentivesNoncurrent	0	USD
CY2020Q4	grpn	Other Non Current Liabilities OtherNonCurrentLiabilities	7378000	USD
CY2019Q4	grpn	Other Non Current Liabilities OtherNonCurrentLiabilities	5132000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	44428000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	44987000	USD
CY2018	us-gaap	Oci Before Reclassifications Before Tax Attributable To Parent OciBeforeReclassificationsBeforeTaxAttributableToParent	2491000	USD
CY2018	us-gaap	Reclassification From Aoci Current Period Before Tax Attributable To Parent ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent	106000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2597000	USD
CY2018	grpn	Reclassificationfrom Aoci Current Period Stranded Tax Effects Asu201802 Tax ReclassificationfromAOCICurrentPeriodStrandedTaxEffectsASU201802Tax	161000	USD
CY2019	us-gaap	Oci Before Reclassifications Before Tax Attributable To Parent OciBeforeReclassificationsBeforeTaxAttributableToParent	4479000	USD
CY2019	us-gaap	Reclassification From Aoci Current Period Before Tax Attributable To Parent ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	4479000	USD
CY2020	us-gaap	Oci Before Reclassifications Before Tax Attributable To Parent OciBeforeReclassificationsBeforeTaxAttributableToParent	-35972000	USD
CY2020	us-gaap	Reclassification From Aoci Current Period Before Tax Attributable To Parent ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent	0	USD
CY2020	us-gaap	Reclassification From Aoci Current Period Before Tax Attributable To Parent ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent	0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-35972000	USD
CY2020Q4	us-gaap	Convertible Debt Fair Value Disclosures ConvertibleDebtFairValueDisclosures	263300000	USD
CY2019Q4	us-gaap	Convertible Debt Fair Value Disclosures ConvertibleDebtFairValueDisclosures	262700000	USD
CY2016Q2	us-gaap	Derivative Cost Of Hedge DerivativeCostOfHedge	59100000	USD
CY2016Q2	grpn	Hedging Activity Shares Covered HedgingActivitySharesCovered	2300000	shares
CY2016Q2	grpn	Convertible Note Hedge Strike Price ConvertibleNoteHedgeStrikePrice	108.00
CY2016Q2	us-gaap	Proceeds From Issuance Of Warrants ProceedsFromIssuanceOfWarrants	35500000	USD
CY2016Q2	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	2300000	shares
CY2016Q2	us-gaap	Class Of Warrant Or Right Exercise Price Of Warrants Or Rights1 ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1	170.00
CY2016Q2	grpn	Convertible Note Hedge Strike Price ConvertibleNoteHedgeStrikePrice	108.00
CY2016Q2	us-gaap	Class Of Warrant Or Right Exercise Price Of Warrants Or Rights1 ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1	170.00
CY2020Q4	grpn	Lessor Sublease Income To Be Paid LessorSubleaseIncomeToBePaid	18200000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	107509000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	133832000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	21523000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	28193000	USD
CY2020Q4	grpn	Lease Rightof Use Asset LeaseRightofUseAsset	129032000	USD
CY2019Q4	grpn	Lease Rightof Use Asset LeaseRightofUseAsset	162025000	USD
CY2020Q4	grpn	Accumulated Amortization Rightofuse Assets AccumulatedAmortizationRightofuseAssets	44590000	USD
CY2019Q4	grpn	Accumulated Amortization Rightofuse Assets AccumulatedAmortizationRightofuseAssets	36380000	USD
CY2020Q4	grpn	Lease Rightof Use Asset Net LeaseRightofUseAssetNet	84442000	USD
CY2019Q4	grpn	Lease Rightof Use Asset Net LeaseRightofUseAssetNet	125645000	USD
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	6737000	USD
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	18922000	USD
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	522000	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1021000	USD
CY2020	grpn	Finance Lease Cost FinanceLeaseCost	7259000	USD
CY2019	grpn	Finance Lease Cost FinanceLeaseCost	19943000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	30870000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	34397000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	8143000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	8551000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	313000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	365000	USD
CY2020	us-gaap	Sublease Income SubleaseIncome	4693000	USD
CY2019	us-gaap	Sublease Income SubleaseIncome	5045000	USD
CY2020	us-gaap	Lease Cost LeaseCost	41892000	USD
CY2019	us-gaap	Lease Cost LeaseCost	58211000	USD
CY2018	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	40100000	USD
CY2018	us-gaap	Operating Leases Income Statement Sublease Revenue OperatingLeasesIncomeStatementSubleaseRevenue	6500000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	4717000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	38690000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	715000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	35451000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	12000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	27025000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	0	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	19599000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	0	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	16175000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	0	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	1701000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	5444000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	138641000	USD
CY2020Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	92000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	14581000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	5352000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	124060000	USD
CY2020Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	4622000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	33133000	USD
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	730000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	90927000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Next Twelve Months LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths	5065000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Two Years LessorOperatingLeasePaymentsToBeReceivedTwoYears	5103000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Three Years LessorOperatingLeasePaymentsToBeReceivedThreeYears	4385000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Four Years LessorOperatingLeasePaymentsToBeReceivedFourYears	2333000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Five Years LessorOperatingLeasePaymentsToBeReceivedFiveYears	2362000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Thereafter LessorOperatingLeasePaymentsToBeReceivedThereafter	197000	USD
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received LessorOperatingLeasePaymentsToBeReceived	19445000	USD
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P1Y
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.054
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.054
CY2020Q4	us-gaap	Purchase Obligation Due In Next Twelve Months PurchaseObligationDueInNextTwelveMonths	27365000	USD
CY2020Q4	us-gaap	Purchase Obligation Due In Second Year PurchaseObligationDueInSecondYear	27452000	USD
CY2020Q4	us-gaap	Purchase Obligation Due In Third Year PurchaseObligationDueInThirdYear	27730000	USD
CY2020Q4	us-gaap	Purchase Obligation Due In Fourth Year PurchaseObligationDueInFourthYear	20000	USD
CY2020Q4	us-gaap	Purchase Obligation Due In Fifth Year PurchaseObligationDueInFifthYear	0	USD
CY2020Q4	us-gaap	Purchase Obligation Due After Fifth Year PurchaseObligationDueAfterFifthYear	0	USD
CY2020Q4	us-gaap	Purchase Obligation PurchaseObligation	82567000	USD
CY2020	grpn	Gainon Expirationof Indemnity Liability GainonExpirationofIndemnityLiability	400000	USD
CY2019	grpn	Gainon Expirationof Indemnity Liability GainonExpirationofIndemnityLiability	2200000	USD
CY2020Q4	grpn	Indemnification Liabilities IndemnificationLiabilities	2800000	USD
CY2020Q4	grpn	Indemnification Liability Maximum Exposure IndemnificationLiabilityMaximumExposure	11700000	USD
CY2020Q4	us-gaap	Preferred Stock Capital Shares Reserved For Future Issuance PreferredStockCapitalSharesReservedForFutureIssuance	50000000	shares
CY2019Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2020Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	100500000	shares
CY2018Q2	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	300000000.0	USD
CY2020Q4	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	245000000.0	USD
CY2020Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	3135422	shares
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	40745000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	81615000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	64821000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	4500000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	7100000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	7400000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	3693000	USD
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	11200000	USD
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	18000000.0	USD
CY2018Q1	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	25500000	USD
CY2018Q4	grpn	Customer Credits Current CustomerCreditsCurrent	15118000	USD
CY2019	grpn	Customer Credits Credits Issued CustomerCreditsCreditsIssued	115031000	USD
CY2019	grpn	Customer Credits Credits Redeemed CustomerCreditsCreditsRedeemed	102682000	USD
CY2019	grpn	Customer Credits Breakage Revenue Recognized CustomerCreditsBreakageRevenueRecognized	13699000	USD
CY2019	grpn	Customer Credits Foreign Currency Translation CustomerCreditsForeignCurrencyTranslation	4000	USD
CY2019Q4	grpn	Customer Credits Current CustomerCreditsCurrent	13764000	USD
CY2020	grpn	Customer Credits Credits Issued CustomerCreditsCreditsIssued	213826000	USD
CY2020	grpn	Customer Credits Credits Redeemed CustomerCreditsCreditsRedeemed	147096000	USD
CY2020	grpn	Customer Credits Breakage Revenue Recognized CustomerCreditsBreakageRevenueRecognized	21364000	USD
CY2020	grpn	Customer Credits Foreign Currency Translation CustomerCreditsForeignCurrencyTranslation	-1876000	USD
CY2020Q4	grpn	Customer Credits Current CustomerCreditsCurrent	61006000	USD
CY2020	us-gaap	Amortization Of Deferred Charges AmortizationOfDeferredCharges	15300000	USD
CY2019	us-gaap	Amortization Of Deferred Charges AmortizationOfDeferredCharges	20400000	USD
CY2018	us-gaap	Amortization Of Deferred Charges AmortizationOfDeferredCharges	25200000	USD
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Period Increase Decrease AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease	9631000	USD
CY2020	grpn	Restructuring Charges Payable In Cash RestructuringChargesPayableInCash	38403000	USD
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	3315000	USD
CY2020	grpn	Accounts Receivable Allowance For Credit Losses Foreign Currency Translation AccountsReceivableAllowanceForCreditLossesForeignCurrencyTranslation	-253000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	9756000	USD
CY2020	us-gaap	Severance Costs1 SeveranceCosts1	38001000	USD
CY2020	grpn	Restructuring Costs Legal And Advisory RestructuringCostsLegalAndAdvisory	2137000	USD
CY2020	grpn	Restructuring Costs Property Equipment And Software Impairments RestructuringCostsPropertyEquipmentAndSoftwareImpairments	5613000	USD
CY2020	grpn	Restructuring Costs Right Of Use Asset Impairments And Lease Related Charges Credits RestructuringCostsRightOfUseAssetImpairmentsAndLeaseRelatedChargesCredits	19085000	USD
CY2020	us-gaap	Restructuring Charges RestructuringCharges	64836000	USD
CY2020	us-gaap	Restructuring And Related Cost Number Of Positions Eliminated RestructuringAndRelatedCostNumberOfPositionsEliminated	1200	employee
CY2018Q4	us-gaap	Restructuring Reserve RestructuringReserve	1119000	USD
CY2019	grpn	Restructuring Charges Payable In Cash RestructuringChargesPayableInCash	31000	USD
CY2019	us-gaap	Payments For Restructuring PaymentsForRestructuring	436000	USD
CY2019	us-gaap	Restructuring Reserve Translation Adjustment RestructuringReserveTranslationAdjustment	-15000	USD
CY2019Q4	us-gaap	Restructuring Reserve RestructuringReserve	699000	USD
CY2020	us-gaap	Payments For Restructuring PaymentsForRestructuring	26617000	USD
CY2020	us-gaap	Restructuring Reserve Translation Adjustment RestructuringReserveTranslationAdjustment	1646000	USD
CY2020Q4	us-gaap	Restructuring Reserve RestructuringReserve	14131000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-55699000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	6758000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	23349000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-238367000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-20289000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-22318000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-294066000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-13531000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1031000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-7504000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	761000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-957000	USD
CY2020	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	0	USD
CY2019	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	0	USD
CY2018	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	0	USD
CY2020	us-gaap	Income Tax Expense Benefit Continuing Operations Discontinued Operations Extraordinary Items IncomeTaxExpenseBenefitContinuingOperationsDiscontinuedOperationsExtraordinaryItems	-7504000	USD
CY2019	us-gaap	Income Tax Expense Benefit Continuing Operations Discontinued Operations Extraordinary Items IncomeTaxExpenseBenefitContinuingOperationsDiscontinuedOperationsExtraordinaryItems	761000	USD
CY2018	us-gaap	Income Tax Expense Benefit Continuing Operations Discontinued Operations Extraordinary Items IncomeTaxExpenseBenefitContinuingOperationsDiscontinuedOperationsExtraordinaryItems	-957000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-403000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	2246000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	4043000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-7101000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1485000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-5000000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-7504000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	761000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-957000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-61805000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-2842000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	216000	USD
CY2020	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	8608000	USD
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	5529000	USD
CY2018	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	2113000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	6487000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	5297000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	720000	USD
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-4474000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-10074000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-7727000	USD
CY2020	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	618000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-3443000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	1544000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	0	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	0	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	607000	USD
CY2018	grpn	Effective Income Tax Rate Reconciliation Expense Ordinary Stock Loss EffectiveIncomeTaxRateReconciliationExpenseOrdinaryStockLoss	11815000	USD
CY2020	grpn	Effective Income Tax Rate Reconciliation Expiration Of Operating Loss Carryforward EffectiveIncomeTaxRateReconciliationExpirationOfOperatingLossCarryforward	19962000	USD
CY2020	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	-15518000	USD
CY2019	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	-12418000	USD
CY2018	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	18000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	3803000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	6355000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	3239000	USD
CY2020	grpn	Tax Windfalls Shortfalls On Stock Based Compensation TaxWindfallsShortfallsOnStockBasedCompensation	-3876000	USD
CY2019	grpn	Tax Windfalls Shortfalls On Stock Based Compensation TaxWindfallsShortfallsOnStockBasedCompensation	-2042000	USD
CY2018	grpn	Tax Windfalls Shortfalls On Stock Based Compensation TaxWindfallsShortfallsOnStockBasedCompensation	335000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	-6043000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	-3447000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	8331000	USD
CY2020	grpn	Effective Income Tax Rate Reconciliation Forgivenessof Intercompany Liabilities EffectiveIncomeTaxRateReconciliationForgivenessofIntercompanyLiabilities	2863000	USD
CY2019	grpn	Effective Income Tax Rate Reconciliation Forgivenessof Intercompany Liabilities EffectiveIncomeTaxRateReconciliationForgivenessofIntercompanyLiabilities	-67000	USD
CY2018	grpn	Effective Income Tax Rate Reconciliation Forgivenessof Intercompany Liabilities EffectiveIncomeTaxRateReconciliationForgivenessofIntercompanyLiabilities	1340000	USD
CY2020	grpn	Effective Income Tax Rate Reconciliation Expense Ordinary Stock Loss EffectiveIncomeTaxRateReconciliationExpenseOrdinaryStockLoss	0	USD
CY2019	grpn	Effective Income Tax Rate Reconciliation Expense Ordinary Stock Loss EffectiveIncomeTaxRateReconciliationExpenseOrdinaryStockLoss	0	USD
CY2019	grpn	Effective Income Tax Rate Reconciliation Expiration Of Operating Loss Carryforward EffectiveIncomeTaxRateReconciliationExpirationOfOperatingLossCarryforward	12537000	USD
CY2018	grpn	Effective Income Tax Rate Reconciliation Expiration Of Operating Loss Carryforward EffectiveIncomeTaxRateReconciliationExpirationOfOperatingLossCarryforward	0	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	23202000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	0	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	0	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	4557000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	-5736000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	20134000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-7504000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	761000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-957000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	54699000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	35565000	USD
CY2020Q4	grpn	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	16279000	USD
CY2019Q4	grpn	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	22557000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	5129000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	7657000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	142835000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	157202000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	22974000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	21002000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	24885000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	23012000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Unrealized Currency Losses DeferredTaxAssetsUnrealizedCurrencyLosses	1244000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Unrealized Currency Losses DeferredTaxAssetsUnrealizedCurrencyLosses	3765000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	985000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	1017000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	269030000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	271777000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	212143000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	206394000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	56887000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	65383000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	12288000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	16343000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	8211000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	11994000	USD
CY2020Q4	grpn	Deferred Tax Liability Operating Lease Right Of Use Asset DeferredTaxLiabilityOperatingLeaseRightOfUseAsset	11433000	USD
CY2019Q4	grpn	Deferred Tax Liability Operating Lease Right Of Use Asset DeferredTaxLiabilityOperatingLeaseRightOfUseAsset	20172000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Financing Arrangements DeferredTaxLiabilitiesFinancingArrangements	1163000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Financing Arrangements DeferredTaxLiabilitiesFinancingArrangements	1883000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Tax Deferred Income DeferredTaxLiabilitiesTaxDeferredIncome	15369000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Tax Deferred Income DeferredTaxLiabilitiesTaxDeferredIncome	14064000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	48464000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	64456000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	8423000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	927000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-1320900000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	24100000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	77500000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	465200000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	64361000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	87637000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	87359000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	8389000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	3754000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1500000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	22541000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	28767000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	21000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1994000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	6086000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	7533000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	5640000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	3875000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	9447000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsIncreasesResultingFromForeignCurrencyTranslation	2397000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsDecreasesResultingFromForeignCurrencyTranslation	474000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsIncreasesResultingFromForeignCurrencyTranslation	713000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	48960000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	64361000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	87637000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	19900000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	25100000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	33300000	USD
CY2020	us-gaap	Income Tax Examination Penalties And Interest Expense IncomeTaxExaminationPenaltiesAndInterestExpense	1000000.0	USD
CY2019	us-gaap	Income Tax Examination Penalties And Interest Expense IncomeTaxExaminationPenaltiesAndInterestExpense	1400000	USD
CY2018	us-gaap	Income Tax Examination Penalties And Interest Expense IncomeTaxExaminationPenaltiesAndInterestExpense	1600000	USD
CY2020Q4	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	4900000	USD
CY2019Q4	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	4900000	USD
CY2020	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	8900000	USD
CY2019	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	12300000	USD
CY2018	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	7900000	USD
CY2020	us-gaap	Variable Interest Entity Ownership Percentage VariableInterestEntityOwnershipPercentage	0.50
CY2018Q2	us-gaap	Business Combination Contingent Consideration Liability BusinessCombinationContingentConsiderationLiability	2500000	USD
CY2019Q4	us-gaap	Equity Method Investments EquityMethodInvestments	1405000	USD
CY2018Q4	us-gaap	Equity Method Investments EquityMethodInvestments	73902000	USD
CY2017Q4	us-gaap	Equity Method Investments EquityMethodInvestments	82966000	USD
CY2020	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	-1405000	USD
CY2019	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	-72497000	USD
CY2018	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	-9064000	USD
CY2020Q4	us-gaap	Equity Method Investments EquityMethodInvestments	0	USD
CY2019Q4	us-gaap	Equity Method Investments EquityMethodInvestments	1405000	USD
CY2018Q4	us-gaap	Equity Method Investments EquityMethodInvestments	73902000	USD
CY2020	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	-1405000	USD
CY2019	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	-72497000	USD
CY2018	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	-9064000	USD
CY2019Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	1298000	USD
CY2018Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	1529000	USD
CY2017Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	0	USD
CY2020	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Issues FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues	0	USD
CY2019	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Issues FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues	0	USD
CY2018	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Issues FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues	1589000	USD
CY2020	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	908000	USD
CY2019	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	312000	USD
CY2018	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	0	USD
CY2020	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	6000	USD
CY2019	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	39000	USD
CY2018	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	56000	USD
CY2020	grpn	Fair Value Measurementwith Unobservable Inputs Reconciliation Recurring Basis Liability Foreign Currency Translation FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisLiabilityForeignCurrencyTranslation	-70000	USD
CY2019	grpn	Fair Value Measurementwith Unobservable Inputs Reconciliation Recurring Basis Liability Foreign Currency Translation FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisLiabilityForeignCurrencyTranslation	42000	USD
CY2018	grpn	Fair Value Measurementwith Unobservable Inputs Reconciliation Recurring Basis Liability Foreign Currency Translation FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisLiabilityForeignCurrencyTranslation	-116000	USD
CY2020Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	326000	USD
CY2019Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	1298000	USD
CY2018Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	1529000	USD
CY2020	us-gaap	Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	6000	USD
CY2019	us-gaap	Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	39000	USD
CY2018	us-gaap	Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	56000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	109500000	USD
CY2020	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	21600000	USD
CY2020	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	6700000	USD
CY2019	us-gaap	Equity Securities Without Readily Determinable Fair Value Upward Price Adjustment Annual Amount EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentAnnualAmount	51400000	USD
CY2018	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	4600000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-286562000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-14292000	USD
CY2019	us-gaap	Marketing Expense MarketingExpense	339355000	USD
CY2018	us-gaap	Gross Profit GrossProfit	1320601000	USD
CY2020	us-gaap	Marketing Expense MarketingExpense	154534000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	1988000	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1751000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	10682000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	13067000	USD
CY2020	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-288313000	USD
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-24974000	USD
CY2018	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-11079000	USD
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	382000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	2597000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-287931000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-22377000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-11079000	USD
CY2020	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	28604115	shares
CY2019	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	28370417	shares
CY2018	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	28325555	shares
CY2020	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	-10.08
CY2020	us-gaap	Gross Profit GrossProfit	677294000	USD
CY2019	us-gaap	Gross Profit GrossProfit	1186129000	USD
CY2019	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	12894000	USD
CY2018	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	16587000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	-0.88
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	-0.39
CY2020	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic And Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicAndDilutedShare	0.01
CY2019	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic And Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicAndDilutedShare	0.09
CY2018	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic And Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicAndDilutedShare	0
CY2020	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-10.07
CY2019	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.79
CY2018	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.39
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	6716581	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	6407194	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	6259285	shares
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	segment
CY2018	us-gaap	Marketing Expense MarketingExpense	395737000	USD
CY2020	grpn	Contribution Profit ContributionProfit	522760000	USD
CY2019	grpn	Contribution Profit ContributionProfit	846774000	USD
CY2018	grpn	Contribution Profit ContributionProfit	924864000	USD
CY2020	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	603185000	USD
CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	806945000	USD
CY2018	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	870961000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	109486000	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	22351000	USD
CY2019	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2018	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2020	us-gaap	Restructuring Charges RestructuringCharges	64836000	USD
CY2019	us-gaap	Restructuring Charges RestructuringCharges	31000	USD
CY2018	us-gaap	Restructuring Charges RestructuringCharges	-136000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	-277098000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	39798000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	54039000	USD
CY2020Q4	us-gaap	Assets Assets	1411507000	USD
CY2019Q4	us-gaap	Assets Assets	1586743000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	87522000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	105765000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	115828000	USD
CY2020	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	4707000	USD
CY2020	us-gaap	Translation Adjustment Functional To Reporting Currency Net Of Tax Period Increase Decrease TranslationAdjustmentFunctionalToReportingCurrencyNetOfTaxPeriodIncreaseDecrease	10200000	USD
CY2019	us-gaap	Translation Adjustment Functional To Reporting Currency Net Of Tax Period Increase Decrease TranslationAdjustmentFunctionalToReportingCurrencyNetOfTaxPeriodIncreaseDecrease	-1500000	USD
CY2018	us-gaap	Translation Adjustment Functional To Reporting Currency Net Of Tax Period Increase Decrease TranslationAdjustmentFunctionalToReportingCurrencyNetOfTaxPeriodIncreaseDecrease	-2300000	USD

Files In Submission

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$GRPN
Groupon, Inc. Stock $grpn

2020 Q4 Form 10-K Financial Statement

#000149028121000023 Filed on February 25, 2021

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$GRPN Groupon, Inc. Stock $grpn

2020 Q4 Form 10-K Financial Statement

#000149028121000023 Filed on February 25, 2021

Income Statement

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Files In Submission

$GRPN
Groupon, Inc. Stock $grpn