$CRTO
Criteo S.A. Stock $crto

$crto Overview Financials Valuation SEC Filings Company Website

2018 Q4 Form 10-K Financial Statement

#000157642720000011 Filed on March 02, 2020

Income Statement

Concept	2018 Q4	2018	2017 Q4
Revenue	$670.1M	$2.300B	$674.0M
YoY Change	-0.58%	0.16%	18.91%
Cost Of Revenue	$437.0M	$1.466B	$428.8M
YoY Change	1.92%	-0.75%	17.09%
Gross Profit	$233.1M	$834.2M	$245.2M
YoY Change	-4.95%	1.8%	22.23%
Gross Profit Margin	34.78%	36.27%	36.38%
Selling, General & Admin	$118.5M	$507.9M	$119.4M
YoY Change	-0.78%	0.03%	10.35%
% of Gross Profit	50.83%	60.88%	48.69%
Research & Development	$40.99M	$179.3M	$41.50M
YoY Change	-1.23%	3.07%	24.25%
% of Gross Profit	17.59%	21.49%	16.92%
Depreciation & Amortization	$32.83M	$78.19M	$31.30M
YoY Change	4.87%	18.36%	83.04%
% of Gross Profit	14.08%	9.37%	12.77%
Operating Expenses	$169.7M	$687.1M	$169.8M
YoY Change	-0.09%	0.8%	15.35%
Operating Profit	$63.40M	$147.1M	$75.40M
YoY Change	-15.91%	6.72%	41.2%
Interest Expense	-$1.723M	$2.107M	-$2.200M
YoY Change	-21.68%	-26.23%	-257.14%
% of Operating Profit	-2.72%	1.43%	-2.92%
Other Income/Expense, Net	-$23.00K	-$5.084M	$0.00
YoY Change		-46.68%
Pretax Income	$60.43M	$142.0M	$68.30M
YoY Change	-11.52%	10.69%	26.72%
Income Tax	$18.30M	$46.14M	$14.90M
% Of Pretax Income	30.28%	32.49%	21.82%
Net Earnings	$37.97M	$88.64M	$53.00M
YoY Change	-28.37%	-2.82%	34.52%
Net Earnings / Revenue	5.67%	3.85%	7.86%
Basic Earnings Per Share		$1.33
Diluted Earnings Per Share	$566.2K	$1.31	$781.7K
COMMON SHARES
Basic Shares Outstanding	67.36M shares	66.46M shares	65.99M shares
Diluted Shares Outstanding		67.66M shares

Balance Sheet

Concept	2018 Q4	2018	2017 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$364.4M	$364.4M	$414.1M
YoY Change	-12.0%	-12.0%	53.2%
Cash & Equivalents	$364.4M		$414.1M
Short-Term Investments	$125.4M	$125.4M	$146.9M
Other Short-Term Assets	$22.82M	$18.10M	$26.33M
YoY Change	-13.34%	-12.56%	36.13%
Inventory
Prepaid Expenses	$12.30M		$12.23M
Receivables	$473.9M	$473.9M	$484.1M
Other Receivables	$77.47M	$77.50M	$72.90M
Total Short-Term Assets	$933.9M	$933.9M	$991.8M
YoY Change	-5.84%	-5.84%	33.56%
LONG-TERM ASSETS
Property, Plant & Equipment	$184.0M	$184.0M	$161.7M
YoY Change	13.77%	13.79%	48.96%
Goodwill	$312.9M		$236.8M
YoY Change	32.11%		13.09%
Intangibles	$112.0M		$96.22M
YoY Change	16.43%		-6.53%
Long-Term Investments	$20.46M	$20.50M	$19.50M
YoY Change	4.92%	5.13%	14.71%
Other Assets	$33.89M	$33.90M	$25.20M
YoY Change	34.5%	34.52%	-17.65%
Total Long-Term Assets	$663.3M	$663.2M	$539.5M
YoY Change	22.94%	22.93%	15.14%
TOTAL ASSETS
Total Short-Term Assets	$933.9M	$933.9M	$991.8M
Total Long-Term Assets	$663.3M	$663.2M	$539.5M
Total Assets	$1.597B	$1.597B	$1.531B
YoY Change	4.3%	4.3%	26.43%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$446.8M	$446.8M	$447.8M
YoY Change	-0.22%	-0.22%	17.44%
Accrued Expenses	$65.88M	$65.90M	$66.20M
YoY Change	-0.49%	-0.45%	18.43%
Deferred Revenue	$623.0K		$706.0K
YoY Change	-11.76%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$1.018M	$1.000M	$982.0K
YoY Change	3.67%	-33.33%	-82.22%
Total Short-Term Liabilities	$605.3M	$605.3M	$621.0M
YoY Change	-2.52%	-2.53%	19.47%
LONG-TERM LIABILITIES
Long-Term Debt	$2.490M	$2.500M	$1.798M
YoY Change	38.49%	13.64%	-97.68%
Other Long-Term Liabilities	$5.103M	$10.60M	$2.793M
YoY Change	82.71%	34.18%
Total Long-Term Liabilities	$23.90M	$13.10M	$12.60M
YoY Change	89.73%	29.7%	-84.55%
TOTAL LIABILITIES
Total Short-Term Liabilities	$605.3M	$605.3M	$621.0M
Total Long-Term Liabilities	$23.90M	$13.10M	$12.60M
Total Liabilities	$629.2M	$653.5M	$633.6M
YoY Change	-0.69%	0.57%	5.37%
SHAREHOLDERS EQUITY
Retained Earnings	$387.9M		$300.2M
YoY Change	29.2%		51.35%
Common Stock	$665.5M		$593.6M
YoY Change	12.12%		21.04%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$79.16M		$0.00
YoY Change
Treasury Stock Shares	3.500M shares		0.000 shares
Shareholders Equity	$943.7M	$943.7M	$881.5M
YoY Change
Total Liabilities & Shareholders Equity	$1.597B	$1.597B	$1.531B
YoY Change	4.3%	4.3%	26.43%

Cashflow Statement

Concept	2018 Q4	2018	2017 Q4
OPERATING ACTIVITIES
Net Income	$37.97M	$88.64M	$53.00M
YoY Change	-28.37%	-2.82%	34.52%
Depreciation, Depletion And Amortization	$32.83M	$78.19M	$31.30M
YoY Change	4.87%	18.36%	83.04%
Cash From Operating Activities	$85.63M	$260.7M	$79.00M
YoY Change	8.39%	6.22%	10.18%
INVESTING ACTIVITIES
Capital Expenditures	-$38.58M	-$125.5M	-$47.90M
YoY Change	-19.46%	2.7%	59.14%
Acquisitions
YoY Change
Other Investing Activities	-$59.14M	-$16.82M	$22.50M
YoY Change	-362.84%	-31.65%	-110.08%
Cash From Investing Activities	-$97.72M	-$226.7M	-$25.50M
YoY Change	283.2%	113.37%	-89.94%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$78.53M
YoY Change		-345.7%
Debt Paid & Issued, Net		$964.0K
YoY Change		-98.93%
Cash From Financing Activities	-79.38M	-$62.68M	5.800M
YoY Change	-1468.55%	112.69%	-92.29%
NET CHANGE
Cash From Operating Activities	85.63M	$260.7M	79.00M
Cash From Investing Activities	-97.72M	-$226.7M	-25.50M
Cash From Financing Activities	-79.38M	-$62.68M	5.800M
Net Change In Cash	-91.47M	-$49.69M	59.30M
YoY Change	-254.24%	-134.55%	-155.63%
FREE CASH FLOW
Cash From Operating Activities	$85.63M	$260.7M	$79.00M
Capital Expenditures	-$38.58M	-$125.5M	-$47.90M
Free Cash Flow	$124.2M	$386.2M	$126.9M
YoY Change	-2.12%	5.05%	24.66%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2019	dei	Amendment Flag AmendmentFlag	false
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0001576427
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	25900000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	16100000	USD
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.025
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.025
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	67708203	shares
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	66197181	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	67708203	shares
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	66197181	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	67708203	shares
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	66197181	shares
CY2019	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	1971130	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	2241036	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	1834243	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	23.16
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	25.39
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	24.12
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	28.33
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	26.94
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	23.09
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P6Y10M24D
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P6Y7M30D
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P6Y2M20D
CY2019Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	3903673	shares
CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity File Number EntityFileNumber	001-36153
CY2019	dei	Entity Registrant Name EntityRegistrantName	Criteo S.A.
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	I0
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	32, rue Blanche
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	75009
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Paris
CY2019	dei	Entity Address Country EntityAddressCountry	FR
CY2019	dei	Country Region CountryRegion	33
CY2019	dei	City Area Code CityAreaCode	40
CY2019	dei	Local Phone Number LocalPhoneNumber	40 22 90
CY2019	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2019	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2019	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2019	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2019	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2019	dei	Entity Small Business EntitySmallBusiness	false
CY2019	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2019	dei	Entity Shell Company EntityShellCompany	false
CY2019Q2	dei	Entity Public Float EntityPublicFloat	1100000000	USD
CY2020Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	61920758	shares
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CY2018Q4	crto	Prepaid Income Taxes PrepaidIncomeTaxes	19370000	USD
CY2019Q4	crto	Prepaid Income Taxes PrepaidIncomeTaxes	21817000	USD
CY2018Q4	crto	Prepaid Other Taxesand Other Taxes Receivable PrepaidOtherTaxesandOtherTaxesReceivable	53338000	USD
CY2019Q4	crto	Prepaid Other Taxesand Other Taxes Receivable PrepaidOtherTaxesandOtherTaxesReceivable	60924000	USD
CY2018Q4	us-gaap	Other Assets Current OtherAssetsCurrent	22816000	USD
CY2019Q4	us-gaap	Other Assets Current OtherAssetsCurrent	17225000	USD
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CY2019Q4	us-gaap	Assets Current AssetsCurrent	1000461000	USD
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CY2018Q4	us-gaap	Goodwill Goodwill	312881000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	317100000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	142044000	USD
CY2018Q4	us-gaap	Nontrade Receivables Noncurrent NontradeReceivablesNoncurrent	20460000	USD
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CY2018Q4	crto	Financial Liabilities Current FinancialLiabilitiesCurrent	1018000	USD
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CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	45853000	USD
CY2018Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	55592000	USD
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CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
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CY2019	us-gaap	Gross Profit GrossProfit	829036000	USD
CY2017	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	173925000	USD
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CY2017	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-9534000	USD
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CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	135465000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	31651000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	46144000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	39496000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	96659000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	95879000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	95969000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	91214000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	88644000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	90745000	USD
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	5445000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	7235000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	5224000	USD
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.40
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.33
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.41
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.34
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.31
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.38
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	65143036	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	66456890	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	64305965	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	67851971	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	67662904	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	65598588	shares
CY2017	us-gaap	Profit Loss ProfitLoss	96659000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	95879000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	95969000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	77023000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-18781000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-8070000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	77023000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-18781000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-8070000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	87000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	103000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-916000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-1235000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	1211000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	1373000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	16000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-319000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	162000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	173595000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	78014000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	86688000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	167566000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	77594000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	86353000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	6029000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	420000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	335000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	609877000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	96659000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	76936000	USD
CY2017	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	33666000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	69909000	USD
CY2017	us-gaap	Stockholders Equity Other StockholdersEquityOther	-10651000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	897698000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	95879000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-17865000	USD
CY2018	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	2955000	USD
CY2018	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	79159000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	65118000	USD
CY2018	us-gaap	Stockholders Equity Other StockholdersEquityOther	-3265000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	967891000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	95969000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-9282000	USD
CY2019	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1831000	USD
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	58883000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	39613000	USD
CY2019	us-gaap	Stockholders Equity Other StockholdersEquityOther	-849000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1037988000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	96659000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	95879000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	95969000	USD
CY2017	us-gaap	Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	155894000	USD
CY2018	us-gaap	Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	154436000	USD
CY2019	us-gaap	Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	126281000	USD
CY2017	crto	Depreciation Depletionand Amortizationand Provisionsfor Various DepreciationDepletionandAmortizationandProvisionsforVarious	104025000	USD
CY2018	crto	Depreciation Depletionand Amortizationand Provisionsfor Various DepreciationDepletionandAmortizationandProvisionsforVarious	111825000	USD
CY2019	crto	Depreciation Depletionand Amortizationand Provisionsfor Various DepreciationDepletionandAmortizationandProvisionsforVarious	97110000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	71612000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	66600000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	40999000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-13269000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-8157000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	15418000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	11439000	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	12744000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	28015000	USD
CY2017	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-4965000	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	3088000	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-769000	USD
CY2017	us-gaap	Increase Decrease In Operating Capital IncreaseDecreaseInOperatingCapital	7095000	USD
CY2018	us-gaap	Increase Decrease In Operating Capital IncreaseDecreaseInOperatingCapital	-10411000	USD
CY2019	us-gaap	Increase Decrease In Operating Capital IncreaseDecreaseInOperatingCapital	-582000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	76907000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-1358000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-876000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	32915000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	9047000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-14145000	USD
CY2017	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	3381000	USD
CY2018	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-3974000	USD
CY2019	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-7631000	USD
CY2017	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	40278000	USD
CY2018	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-3968000	USD
CY2019	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	11390000	USD
CY2017	crto	Increase Decrease In Operating Lease Liabilities Assets IncreaseDecreaseInOperatingLeaseLiabilitiesAssets	0	USD
CY2018	crto	Increase Decrease In Operating Lease Liabilities Assets IncreaseDecreaseInOperatingLeaseLiabilitiesAssets	0	USD
CY2019	crto	Increase Decrease In Operating Lease Liabilities Assets IncreaseDecreaseInOperatingLeaseLiabilitiesAssets	-5170000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	245458000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	260726000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	222832000	USD
CY2017	crto	Payments To Acquire Intangible Assets Property Plant And Equipment PaymentsToAcquireIntangibleAssetsPropertyPlantAndEquipment	122203000	USD
CY2018	crto	Payments To Acquire Intangible Assets Property Plant And Equipment PaymentsToAcquireIntangibleAssetsPropertyPlantAndEquipment	116984000	USD
CY2019	crto	Payments To Acquire Intangible Assets Property Plant And Equipment PaymentsToAcquireIntangibleAssetsPropertyPlantAndEquipment	82716000	USD
CY2017	crto	Increase Decreasein Accounts Payable Relatedto Intangible Assets Property Plantand Equipment IncreaseDecreaseinAccountsPayableRelatedtoIntangibleAssetsPropertyPlantandEquipment	13692000	USD
CY2018	crto	Increase Decreasein Accounts Payable Relatedto Intangible Assets Property Plantand Equipment IncreaseDecreaseinAccountsPayableRelatedtoIntangibleAssetsPropertyPlantandEquipment	-8494000	USD
CY2019	crto	Increase Decreasein Accounts Payable Relatedto Intangible Assets Property Plantand Equipment IncreaseDecreaseinAccountsPayableRelatedtoIntangibleAssetsPropertyPlantandEquipment	-15224000	USD
CY2017	us-gaap	Payments For Proceeds From Businesses And Interest In Affiliates PaymentsForProceedsFromBusinessesAndInterestInAffiliates	-1110000	USD
CY2018	us-gaap	Payments For Proceeds From Businesses And Interest In Affiliates PaymentsForProceedsFromBusinessesAndInterestInAffiliates	101180000	USD
CY2019	us-gaap	Payments For Proceeds From Businesses And Interest In Affiliates PaymentsForProceedsFromBusinessesAndInterestInAffiliates	4582000	USD
CY2017	crto	Paymentsfor Proceedsfrom Changein Other Financial Noncurrent Assets PaymentsforProceedsfromChangeinOtherFinancialNoncurrentAssets	-1148000	USD
CY2018	crto	Paymentsfor Proceedsfrom Changein Other Financial Noncurrent Assets PaymentsforProceedsfromChangeinOtherFinancialNoncurrentAssets	59000	USD
CY2019	crto	Paymentsfor Proceedsfrom Changein Other Financial Noncurrent Assets PaymentsforProceedsfromChangeinOtherFinancialNoncurrentAssets	1366000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-106253000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-226717000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-103888000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	3700000	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	89731000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	964000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1022000	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	31961000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1473000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1691000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	80000000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	58588000	USD
CY2017	crto	Proceedsfrom Paymentsfor Changein Other Financial Liabilities ProceedsfromPaymentsforChangeinOtherFinancialLiabilities	24602000	USD
CY2018	crto	Proceedsfrom Paymentsfor Changein Other Financial Liabilities ProceedsfromPaymentsforChangeinOtherFinancialLiabilities	16815000	USD
CY2019	crto	Proceedsfrom Paymentsfor Changein Other Financial Liabilities ProceedsfromPaymentsforChangeinOtherFinancialLiabilities	-1192000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-29468000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-62676000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-59111000	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	34057000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-21018000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-5496000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	143794000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-49685000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	54337000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	270317000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	414111000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	364426000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	414111000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	364426000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	418763000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-56360000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-67045000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-52093000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	2102000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	1695000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	1403000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	65100000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	39600000	USD
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div style="line-height:120%;padding-top:8px;text-align:left;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;color:#000000;font-style:normal;font-weight:bold;text-decoration:none;">Use of Estimates </span></div><div style="line-height:120%;padding-bottom:4px;padding-top:8px;text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">The preparation of our Consolidated Financial Statements requires the use of estimates, assumptions and judgments that affect the reported amounts of assets, liabilities, and disclosures of contingent assets and liabilities at the date of the consolidated financial statements and the reported amount of revenue and expenses during the period. We base our estimates and assumptions on historical experience and other factors that we believe to be reasonable under the circumstances. We evaluate our estimates and assumptions on an ongoing basis. Our actual results may differ from these estimates. </span></div><div style="line-height:120%;padding-bottom:4px;padding-top:8px;text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">On an on-going basis, management evaluates its estimates, primarily those related to: (1) revenue recognition criteria (2) allowances for doubtful accounts, (3) research tax credits (4) income taxes, including i) recognition of deferred tax assets arising from the subsidiaries projected taxable profit for future years, ii) evaluation of uncertain tax positions associated with our transfer pricing policy and iii) recognition of income tax position in respect with tax reforms recently enacted in countries we operate, (5) assumptions used in valuing acquired assets and assumed liabilities in business combinations, (6) assumptions used in the valuation of goodwill, intangible assets and right of use assets - operating lease, and (7) assumptions used in the valuation model to determine the fair value of share-based compensation plan.</span></div>
CY2019	us-gaap	Property Plant And Equipment Impairment PropertyPlantAndEquipmentImpairment	<div style="line-height:120%;padding-bottom:16px;padding-top:16px;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;font-style:italic;font-weight:bold;text-decoration:none;">Property, Plant and Equipment and Impairment of Long-lived Assets</span></div><div style="line-height:120%;padding-bottom:16px;padding-top:8px;text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">The Company reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset is impaired or the estimated useful life is no longer appropriate. If indicators of impairment exist and the undiscounted projected cash flows associated with an asset are less than the carrying amount of the asset, an impairment loss is recorded to write the asset down to its estimated fair value. Fair value is estimated based on discounted future cash flows.</span></div>
CY2019	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="line-height:120%;padding-top:24px;font-size:10pt;"><span style="font-family:Times New Roman;font-size:10pt;color:#000000;font-style:normal;font-weight:bold;text-decoration:none;">Concentration of Credit Risk</span></div><div style="line-height:120%;padding-bottom:16px;padding-top:8px;text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Financial instruments that potentially subject the Company to significant concentrations of credit risk consist primarily of cash, cash equivalents and accounts receivable. The Company’s cash and cash equivalents are held and foreign exchange contracts are transacted with major financial institutions that the Company's management has assessed to be of high credit quality. The Company has not experienced any losses in such accounts.</span></div><div style="line-height:120%;padding-bottom:16px;padding-top:8px;text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">The Company mitigates its credit risk with respect to accounts receivable by performing credit evaluations and monitoring agencies' and advertisers' accounts receivable balances. As of </span><span style="font-family:inherit;font-size:10pt;">December 31, 2019</span><span style="font-family:inherit;font-size:10pt;"> and </span><span style="font-family:inherit;font-size:10pt;">2018</span><span style="font-family:inherit;font-size:10pt;"> no customer accounted for 10% or more of accounts receivable. During the years ended </span><span style="font-family:inherit;font-size:10pt;">December 31, 2019</span><span style="font-family:inherit;font-size:10pt;">, </span><span style="font-family:inherit;font-size:10pt;">2018</span><span style="font-family:inherit;font-size:10pt;"> and </span><span style="font-family:inherit;font-size:10pt;">2017</span><span style="font-family:inherit;font-size:10pt;">, no single customer represented 10% or more of revenue.</span></div>
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	481732000	USD
CY2019	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1	segment
CY2018Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	3500000	shares
CY2019Q1	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	1600000	shares
CY2019Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	3900000	shares
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	473901000	USD
CY2018Q4	crto	Prepaid Other Taxesand Other Taxes Receivable PrepaidOtherTaxesandOtherTaxesReceivable	53338000	USD
CY2019Q4	crto	Prepaid Other Taxesand Other Taxes Receivable PrepaidOtherTaxesandOtherTaxesReceivable	60924000	USD
CY2018Q4	us-gaap	Other Assets Current OtherAssetsCurrent	22816000	USD
CY2019Q4	us-gaap	Other Assets Current OtherAssetsCurrent	17225000	USD
CY2018Q4	us-gaap	Nontrade Receivables Noncurrent NontradeReceivablesNoncurrent	20460000	USD
CY2019Q4	us-gaap	Nontrade Receivables Noncurrent NontradeReceivablesNoncurrent	21747000	USD
CY2018Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	570515000	USD
CY2019Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	581628000	USD
CY2019	us-gaap	Allowance For Doubtful Accounts Receivable Period Increase Decrease AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease	-9900000	USD
CY2018	us-gaap	Allowance For Doubtful Accounts Receivable Period Increase Decrease AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease	5100000	USD
CY2018Q4	us-gaap	Cash Equivalents At Carrying Value CashEquivalentsAtCarryingValue	125442000	USD
CY2019Q4	us-gaap	Cash Equivalents At Carrying Value CashEquivalentsAtCarryingValue	189119000	USD
CY2018Q4	us-gaap	Cash Cash	238984000	USD
CY2019Q4	us-gaap	Cash Cash	229644000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	364426000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	418763000	USD
CY2018Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	499819000	USD
CY2019Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	497800000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	25918000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	16068000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	473901000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	481732000	USD
CY2016Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	11598000	USD
CY2017Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	20818000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	25918000	USD
CY2017	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	13315000	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	17656000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	11072000	USD
CY2017	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	4821000	USD
CY2018	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	11956000	USD
CY2019	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	20811000	USD
CY2017	crto	Allowance For Doubtful Accounts Change In Consolidation Scope AllowanceForDoubtfulAccountsChangeInConsolidationScope	0	USD
CY2018	crto	Allowance For Doubtful Accounts Change In Consolidation Scope AllowanceForDoubtfulAccountsChangeInConsolidationScope	-150000	USD
CY2019	crto	Allowance For Doubtful Accounts Change In Consolidation Scope AllowanceForDoubtfulAccountsChangeInConsolidationScope	0	USD
CY2017	crto	Allowance For Doubtful Accounts Receivable Currency Translation Adjustment AllowanceForDoubtfulAccountsReceivableCurrencyTranslationAdjustment	-726000	USD
CY2018	crto	Allowance For Doubtful Accounts Receivable Currency Translation Adjustment AllowanceForDoubtfulAccountsReceivableCurrencyTranslationAdjustment	750000	USD
CY2019	crto	Allowance For Doubtful Accounts Receivable Currency Translation Adjustment AllowanceForDoubtfulAccountsReceivableCurrencyTranslationAdjustment	111000	USD
CY2017Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	20818000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	25918000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	16068000	USD
CY2018Q4	crto	Prepayments To Suppliers PrepaymentsToSuppliers	4056000	USD
CY2019Q4	crto	Prepayments To Suppliers PrepaymentsToSuppliers	5109000	USD
CY2018Q4	crto	Other Debtors OtherDebtors	4762000	USD
CY2019Q4	crto	Other Debtors OtherDebtors	4225000	USD
CY2018Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	12295000	USD
CY2019Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	7891000	USD
CY2018Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	1703000	USD
CY2019Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	0	USD
CY2018Q4	crto	Other Assetsand Receivables Gross Current OtherAssetsandReceivablesGrossCurrent	22816000	USD
CY2019Q4	crto	Other Assetsand Receivables Gross Current OtherAssetsandReceivablesGrossCurrent	17225000	USD
CY2018Q4	crto	Other Assetsand Receivables Current OtherAssetsandReceivablesCurrent	22816000	USD
CY2019Q4	crto	Other Assetsand Receivables Current OtherAssetsandReceivablesCurrent	17225000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	161738000	USD
CY2018	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	105549000	USD
CY2018	us-gaap	Property Plant And Equipment Disposals PropertyPlantAndEquipmentDisposals	225000	USD
CY2018	us-gaap	Depreciation Depreciation	78187000	USD
CY2018	crto	Property Plantand Equipment Changein Scope PropertyPlantandEquipmentChangeinScope	129000	USD
CY2018	crto	Property Plant And Equipment Currency Translation Adjustment Gain Loss PropertyPlantAndEquipmentCurrencyTranslationAdjustmentGainLoss	-4991000	USD
CY2018	us-gaap	Property Plant And Equipment Transfers And Changes PropertyPlantAndEquipmentTransfersAndChanges	0	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	184013000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	423085000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	239072000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	184013000	USD
CY2019	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	70542000	USD
CY2019	us-gaap	Property Plant And Equipment Disposals PropertyPlantAndEquipmentDisposals	1915000	USD
CY2019	us-gaap	Depreciation Depreciation	56599000	USD
CY2019	crto	Property Plantand Equipment Changein Scope PropertyPlantandEquipmentChangeinScope	3000	USD
CY2019	crto	Property Plant And Equipment Currency Translation Adjustment Gain Loss PropertyPlantAndEquipmentCurrencyTranslationAdjustmentGainLoss	-1883000	USD
CY2019	us-gaap	Property Plant And Equipment Transfers And Changes PropertyPlantAndEquipmentTransfersAndChanges	0	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	194161000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	452679000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	258518000	USD
CY2017Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	96223000	USD
CY2018	crto	Intangible Assets Acquired IntangibleAssetsAcquired	11436000	USD
CY2018Q4	us-gaap	Disposal Group Including Discontinued Operation Intangible Assets DisposalGroupIncludingDiscontinuedOperationIntangibleAssets	19000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	25314000	USD
CY2018	crto	Intangible Assets Changein Consolidation Scope IntangibleAssetsChangeinConsolidationScope	31210000	USD
CY2018	crto	Intangible Assets Foreign Currency Translation Gain Loss IntangibleAssetsForeignCurrencyTranslationGainLoss	1500000	USD
CY2018	crto	Intangible Assets Transfers Increase Decrease IntangibleAssetsTransfersIncreaseDecrease	0	USD
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	112036000	USD
CY2018Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	192348000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	80312000	USD
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	112036000	USD
CY2019	crto	Intangible Assets Acquired IntangibleAssetsAcquired	12175000	USD
CY2019	crto	Intangible Assets Disposed IntangibleAssetsDisposed	0	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	36888000	USD
CY2019	crto	Intangible Assets Changein Consolidation Scope IntangibleAssetsChangeinConsolidationScope	111000	USD
CY2019	crto	Intangible Assets Foreign Currency Translation Gain Loss IntangibleAssetsForeignCurrencyTranslationGainLoss	548000	USD
CY2019	crto	Intangible Assets Transfers Increase Decrease IntangibleAssetsTransfersIncreaseDecrease	0	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	86886000	USD
CY2019Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	203294000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	116408000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	24645000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	18241000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	15591000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	11487000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	9057000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	7865000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	86886000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	236826000	USD
CY2018	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	77905000	USD
CY2018	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-1850000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	312881000	USD
CY2019	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	5277000	USD
CY2019	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-1058000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	317100000	USD
CY2019	us-gaap	Number Of Businesses Acquired NumberOfBusinessesAcquired	2	business
CY2018	us-gaap	Number Of Businesses Acquired NumberOfBusinessesAcquired	2	business
CY2018	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	1700000	USD
CY2017Q4	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	1798000	USD
CY2018	us-gaap	Loss Contingency Accrual Provision LossContingencyAccrualProvision	2193000	USD
CY2018	crto	Loss Contingency Accrual Provision Used LossContingencyAccrualProvisionUsed	400000	USD
CY2018	crto	Loss Contingency Accrual Provision Released Not Used LossContingencyAccrualProvisionReleasedNotUsed	860000	USD
CY2018	crto	Loss Contingency Accrual Foreign Currency Translation Gain Loss LossContingencyAccrualForeignCurrencyTranslationGainLoss	-91000	USD
CY2018Q4	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	2640000	USD
CY2019	us-gaap	Loss Contingency Accrual Provision LossContingencyAccrualProvision	4258000	USD
CY2019	crto	Loss Contingency Accrual Provision Used LossContingencyAccrualProvisionUsed	82000	USD
CY2019	crto	Loss Contingency Accrual Provision Released Not Used LossContingencyAccrualProvisionReleasedNotUsed	402000	USD
CY2019	crto	Loss Contingency Accrual Foreign Currency Translation Gain Loss LossContingencyAccrualForeignCurrencyTranslationGainLoss	-29000	USD
CY2019Q4	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	6385000	USD
CY2019Q4	us-gaap	Loss Contingency Accrual Carrying Value Current LossContingencyAccrualCarryingValueCurrent	6385000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	2116000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	1480000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	428000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	100000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	62000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	33000	USD
CY2019Q4	crto	Longterm Debt Maturities Repaymentsof Principalin Year Six LongtermDebtMaturitiesRepaymentsofPrincipalinYearSix	13000	USD
CY2019Q4	crto	Other Financial Liabilities OtherFinancialLiabilities	1005000	USD
CY2019Q4	crto	Other Financial Liabilities Duein Next Fiscal Year OtherFinancialLiabilitiesDueinNextFiscalYear	572000	USD
CY2019Q4	crto	Other Financial Liabilities Duein Second Year OtherFinancialLiabilitiesDueinSecondYear	433000	USD
CY2019Q4	crto	Other Financial Liabilities Duein Third Year OtherFinancialLiabilitiesDueinThirdYear	0	USD
CY2019Q4	crto	Other Financial Liabilities Duein Fourth Year OtherFinancialLiabilitiesDueinFourthYear	0	USD
CY2019Q4	crto	Other Financial Liabilities Duein Fifth Year OtherFinancialLiabilitiesDueinFifthYear	0	USD
CY2019Q4	crto	Other Financial Liabilities Duein Sixth Year OtherFinancialLiabilitiesDueinSixthYear	0	USD
CY2019Q4	crto	Financial Derivatives FinancialDerivatives	1284000	USD
CY2019Q4	crto	Derivative Liability Duein Next Fiscal Year DerivativeLiabilityDueinNextFiscalYear	1284000	USD
CY2019Q4	crto	Financial Liabilities FinancialLiabilities	4405000	USD
CY2019Q4	crto	Financial Liabilities Duein Next Fiscal Year FinancialLiabilitiesDueinNextFiscalYear	3336000	USD
CY2019Q4	crto	Financial Liabilities Duein Second Year FinancialLiabilitiesDueinSecondYear	861000	USD
CY2019Q4	crto	Financial Liabilities Duein Third Year FinancialLiabilitiesDueinThirdYear	100000	USD
CY2019Q4	crto	Financial Liabilities Duein Fourth Year FinancialLiabilitiesDueinFourthYear	62000	USD
CY2019Q4	crto	Financial Liabilities Duein Fifth Year FinancialLiabilitiesDueinFifthYear	33000	USD
CY2019Q4	crto	Financial Liabilities Duein Sixth Year FinancialLiabilitiesDueinSixthYear	13000	USD
CY2019Q4	us-gaap	Operating Lease Cost OperatingLeaseCost	19002000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	63506000	USD
CY2019Q4	us-gaap	Short Term Lease Cost ShortTermLeaseCost	605000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	4122000	USD
CY2019Q4	us-gaap	Variable Lease Cost VariableLeaseCost	-817000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	599000	USD
CY2019Q4	us-gaap	Sublease Income SubleaseIncome	378000	USD
CY2019	us-gaap	Sublease Income SubleaseIncome	2916000	USD
CY2019Q4	us-gaap	Lease Cost LeaseCost	18412000	USD
CY2019	us-gaap	Lease Cost LeaseCost	65311000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	49350000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	41395000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	36664000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	20812000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	9436000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	14285000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	171942000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	8101000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	163841000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	54259000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	15714000	USD
CY2019Q4	crto	Lessee Operating Lease Lease Not Commenced Liability LesseeOperatingLeaseLeaseNotCommencedLiability	11800000	USD
CY2018Q4	us-gaap	Contract With Customer Refund Liability Current ContractWithCustomerRefundLiabilityCurrent	10328000	USD
CY2019Q4	us-gaap	Contract With Customer Refund Liability Current ContractWithCustomerRefundLiabilityCurrent	13618000	USD
CY2018Q4	us-gaap	Notes Payable Current NotesPayableCurrent	13183000	USD
CY2019Q4	us-gaap	Notes Payable Current NotesPayableCurrent	16420000	USD
CY2018Q4	crto	Accounts Payable Capital Expenditures AccountsPayableCapitalExpenditures	21454000	USD
CY2019Q4	crto	Accounts Payable Capital Expenditures AccountsPayableCapitalExpenditures	4408000	USD
CY2018Q4	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	1527000	USD
CY2019Q4	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	1213000	USD
CY2018Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	623000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	227000	USD
CY2018Q4	crto	Accounts Payable Accrued Liabilities Employeerelated Payablesand Taxes Payable Current AccountsPayableAccruedLiabilitiesEmployeerelatedPayablesandTaxesPayableCurrent	47115000	USD
CY2019Q4	crto	Accounts Payable Accrued Liabilities Employeerelated Payablesand Taxes Payable Current AccountsPayableAccruedLiabilitiesEmployeerelatedPayablesandTaxesPayableCurrent	35886000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	3221000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	5149000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	5537000	USD
CY2017	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	1231000	USD
CY2018	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	1690000	USD
CY2019	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	1556000	USD
CY2017	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	66000	USD
CY2018	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	86000	USD
CY2019	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	113000	USD
CY2017	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-103000	USD
CY2018	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	1235000	USD
CY2019	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-1374000	USD
CY2017	crto	Defined Benefit Plan Changein Consolidation Scope DefinedBenefitPlanChangeinConsolidationScope	0	USD
CY2018	crto	Defined Benefit Plan Changein Consolidation Scope DefinedBenefitPlanChangeinConsolidationScope	98000	USD
CY2019	crto	Defined Benefit Plan Changein Consolidation Scope DefinedBenefitPlanChangeinConsolidationScope	0	USD
CY2017	us-gaap	Defined Benefit Plan Foreign Currency Exchange Rate Changes Benefit Obligation DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation	-528000	USD
CY2018	us-gaap	Defined Benefit Plan Foreign Currency Exchange Rate Changes Benefit Obligation DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation	251000	USD
CY2019	us-gaap	Defined Benefit Plan Foreign Currency Exchange Rate Changes Benefit Obligation DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation	95000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	5149000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	5537000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	8485000	USD
CY2017	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.017
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.021
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.011
CY2017	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.050
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.050
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.050
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	14345000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	16912000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	15686000	USD
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	66085097	shares
CY2018	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	1466247	shares
CY2018Q4	us-gaap	Deferred Compensation Arrangement With Individual Shares Authorized For Issuance DeferredCompensationArrangementWithIndividualSharesAuthorizedForIssuance	156859	shares
CY2018Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	3459119	shares
CY2019	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	83266	shares
CY2019	us-gaap	Treasury Stock Shares Retired TreasuryStockSharesRetired	1594288	shares
CY2019Q1	us-gaap	Treasury Stock Shares Retired TreasuryStockSharesRetired	1594288	shares
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2296692000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2300314000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2261516000	USD
CY2017	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1355556000	USD
CY2018	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1334334000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1314947000	USD
CY2017	us-gaap	Other Cost Of Operating Revenue OtherCostOfOperatingRevenue	121641000	USD
CY2018	us-gaap	Other Cost Of Operating Revenue OtherCostOfOperatingRevenue	131744000	USD
CY2019	us-gaap	Other Cost Of Operating Revenue OtherCostOfOperatingRevenue	117533000	USD
CY2017	us-gaap	Cost Depreciation Amortization And Depletion CostDepreciationAmortizationAndDepletion	54219000	USD
CY2018	us-gaap	Cost Depreciation Amortization And Depletion CostDepreciationAmortizationAndDepletion	67346000	USD
CY2019	us-gaap	Cost Depreciation Amortization And Depletion CostDepreciationAmortizationAndDepletion	44866000	USD
CY2017	us-gaap	Cost Of Revenue CostOfRevenue	1477197000	USD
CY2018	us-gaap	Cost Of Revenue CostOfRevenue	1466078000	USD
CY2019	us-gaap	Cost Of Revenue CostOfRevenue	1432480000	USD
CY2017	us-gaap	Labor And Related Expense LaborAndRelatedExpense	445563000	USD
CY2018	us-gaap	Labor And Related Expense LaborAndRelatedExpense	451428000	USD
CY2019	us-gaap	Labor And Related Expense LaborAndRelatedExpense	436351000	USD
CY2017	us-gaap	Salaries Wages And Officers Compensation SalariesWagesAndOfficersCompensation	284015000	USD
CY2018	us-gaap	Salaries Wages And Officers Compensation SalariesWagesAndOfficersCompensation	296336000	USD
CY2019	us-gaap	Salaries Wages And Officers Compensation SalariesWagesAndOfficersCompensation	306862000	USD
CY2017	us-gaap	Severance Costs1 SeveranceCosts1	7915000	USD
CY2018	us-gaap	Severance Costs1 SeveranceCosts1	6922000	USD
CY2019	us-gaap	Severance Costs1 SeveranceCosts1	12504000	USD
CY2017	crto	Social Charges SocialCharges	70130000	USD
CY2018	crto	Social Charges SocialCharges	77284000	USD
CY2019	crto	Social Charges SocialCharges	76594000	USD
CY2017	crto	Other Social Expenses OtherSocialExpenses	17178000	USD
CY2018	crto	Other Social Expenses OtherSocialExpenses	14375000	USD
CY2019	crto	Other Social Expenses OtherSocialExpenses	15513000	USD
CY2017	crto	Sharebased Compensation Expense Employeeand Non Employee SharebasedCompensationExpenseEmployeeandNonEmployee	71612000	USD
CY2018	crto	Sharebased Compensation Expense Employeeand Non Employee SharebasedCompensationExpenseEmployeeandNonEmployee	66600000	USD
CY2019	crto	Sharebased Compensation Expense Employeeand Non Employee SharebasedCompensationExpenseEmployeeandNonEmployee	40999000	USD
CY2017	crto	Profit Sharing Expense ProfitSharingExpense	1002000	USD
CY2018	crto	Profit Sharing Expense ProfitSharingExpense	598000	USD
CY2019	crto	Profit Sharing Expense ProfitSharingExpense	92000	USD
CY2017	crto	Research Tax Credit ResearchTaxCredit	6289000	USD
CY2018	crto	Research Tax Credit ResearchTaxCredit	10687000	USD
CY2019	crto	Research Tax Credit ResearchTaxCredit	16213000	USD
CY2017	us-gaap	Labor And Related Expense LaborAndRelatedExpense	445563000	USD
CY2018	us-gaap	Labor And Related Expense LaborAndRelatedExpense	451428000	USD
CY2019	us-gaap	Labor And Related Expense LaborAndRelatedExpense	436351000	USD
CY2019	crto	Sharebased Compensation Arrangementby Sharebased Payment Award Exercise Price Average Percentof Closing Share Pricesforthe Last20 Trading Days SharebasedCompensationArrangementbySharebasedPaymentAwardExercisePriceAveragePercentofClosingSharePricesfortheLast20TradingDays	0.95
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	8203371	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	2246712	shares
CY2017	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1668838	shares
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares	379135	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	996894	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	0	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	7405216	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	4146709	shares
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	137348	shares
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares	1362873	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	2084102	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	0	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	7967602	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	3586098	shares
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	83266	shares
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares	1219112	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	2712801	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	0	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	7538521	shares
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	69908000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	65117000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	39613000	USD
CY2017	crto	Sharebased Compensation Expense Employeeand Non Employee SharebasedCompensationExpenseEmployeeandNonEmployee	71612000	USD
CY2018	crto	Sharebased Compensation Expense Employeeand Non Employee SharebasedCompensationExpenseEmployeeandNonEmployee	66600000	USD
CY2019	crto	Sharebased Compensation Expense Employeeand Non Employee SharebasedCompensationExpenseEmployeeandNonEmployee	40999000	USD
CY2017	us-gaap	Investment Income Interest InvestmentIncomeInterest	883000	USD
CY2018	us-gaap	Investment Income Interest InvestmentIncomeInterest	1055000	USD
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	1528000	USD
CY2017	us-gaap	Interest Expense InterestExpense	2856000	USD
CY2018	us-gaap	Interest Expense InterestExpense	2107000	USD
CY2019	us-gaap	Interest Expense InterestExpense	2383000	USD
CY2017	us-gaap	Interest Expense Debt InterestExpenseDebt	2459000	USD
CY2018	us-gaap	Interest Expense Debt InterestExpenseDebt	1796000	USD
CY2019	us-gaap	Interest Expense Debt InterestExpenseDebt	1756000	USD
CY2017	us-gaap	Debt Related Commitment Fees And Debt Issuance Costs DebtRelatedCommitmentFeesAndDebtIssuanceCosts	397000	USD
CY2018	us-gaap	Debt Related Commitment Fees And Debt Issuance Costs DebtRelatedCommitmentFeesAndDebtIssuanceCosts	311000	USD
CY2019	us-gaap	Debt Related Commitment Fees And Debt Issuance Costs DebtRelatedCommitmentFeesAndDebtIssuanceCosts	627000	USD
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-7495000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-3945000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-4425000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-66000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-87000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-469000	USD
CY2017	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-9534000	USD
CY2018	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-5084000	USD
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-5749000	USD
CY2018	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-5100000	USD
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-5700000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	44920000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	54301000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	24078000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	29193000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	37223000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	8410000	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	15727000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	17078000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	15668000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-13269000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-8157000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	15418000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	1080000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-11155000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	14109000	USD
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-14349000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	2998000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	1309000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	31651000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	46144000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	39496000	USD
CY2017	crto	Current Federal Tax Expense Benefit Value Added Taxes CurrentFederalTaxExpenseBenefitValueAddedTaxes	5500000	USD
CY2018	crto	Current Federal Tax Expense Benefit Value Added Taxes CurrentFederalTaxExpenseBenefitValueAddedTaxes	5900000	USD
CY2019	crto	Current Federal Tax Expense Benefit Value Added Taxes CurrentFederalTaxExpenseBenefitValueAddedTaxes	5500000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.3443
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	128310000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	142023000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	135465000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.3443
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.3443
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.3443
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	44177000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	48899000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	46641000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	6829000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	10211000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	10851000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	605000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	17674000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	13432000	USD
CY2017	crto	Effective Income Tax Rate Reconciliation Beat Waiver Election EffectiveIncomeTaxRateReconciliationBEATWaiverElection	0	USD
CY2018	crto	Effective Income Tax Rate Reconciliation Beat Waiver Election EffectiveIncomeTaxRateReconciliationBEATWaiverElection	0	USD
CY2019	crto	Effective Income Tax Rate Reconciliation Beat Waiver Election EffectiveIncomeTaxRateReconciliationBEATWaiverElection	15962000	USD
CY2017	crto	Effective Income Tax Rate Reconciliation Other Permanent Differences Amount EffectiveIncomeTaxRateReconciliationOtherPermanentDifferencesAmount	5717000	USD
CY2018	crto	Effective Income Tax Rate Reconciliation Other Permanent Differences Amount EffectiveIncomeTaxRateReconciliationOtherPermanentDifferencesAmount	11982000	USD
CY2019	crto	Effective Income Tax Rate Reconciliation Other Permanent Differences Amount EffectiveIncomeTaxRateReconciliationOtherPermanentDifferencesAmount	7667000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	14356000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	11664000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	2713000	USD
CY2017	crto	Effective Income Tax Rate Reconciliation Loss Carryforward Recognition Amount EffectiveIncomeTaxRateReconciliationLossCarryforwardRecognitionAmount	4888000	USD
CY2018	crto	Effective Income Tax Rate Reconciliation Loss Carryforward Recognition Amount EffectiveIncomeTaxRateReconciliationLossCarryforwardRecognitionAmount	4461000	USD
CY2019	crto	Effective Income Tax Rate Reconciliation Loss Carryforward Recognition Amount EffectiveIncomeTaxRateReconciliationLossCarryforwardRecognitionAmount	20636000	USD
CY2017	crto	Effective Income Tax Rate Reconciliation Value Added Taxes Amount EffectiveIncomeTaxRateReconciliationValueAddedTaxesAmount	2867000	USD
CY2018	crto	Effective Income Tax Rate Reconciliation Value Added Taxes Amount EffectiveIncomeTaxRateReconciliationValueAddedTaxesAmount	3849000	USD
CY2019	crto	Effective Income Tax Rate Reconciliation Value Added Taxes Amount EffectiveIncomeTaxRateReconciliationValueAddedTaxesAmount	3632000	USD
CY2017	us-gaap	Income Tax Reconciliation Deductions IncomeTaxReconciliationDeductions	29410000	USD
CY2018	us-gaap	Income Tax Reconciliation Deductions IncomeTaxReconciliationDeductions	38577000	USD
CY2019	us-gaap	Income Tax Reconciliation Deductions IncomeTaxReconciliationDeductions	15946000	USD
CY2017	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	6667000	USD
CY2018	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	377000	USD
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-5441000	USD
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-1611000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	4948000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	2323000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	31651000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	46144000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	39496000	USD
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.247
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.325
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.292
CY2017Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	22724000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-8157000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-318000	USD
CY2018	crto	Deferred Tax Asset Liability Activity Acquisition Divestitures And Consolidations Increase Decrease DeferredTaxAssetLiabilityActivityAcquisitionDivestituresAndConsolidationsIncreaseDecrease	-6911000	USD
CY2018	crto	Deferred Tax Asset Liability Activity Other Activity Adjustment DeferredTaxAssetLiabilityActivityOtherActivityAdjustment	2000	USD
CY2018	crto	Deferred Tax Asset Liability Activity Currency Translation Adjustments Gain Loss DeferredTaxAssetLiabilityActivityCurrencyTranslationAdjustmentsGainLoss	-530000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	23124000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	23124000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	15418000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	163000	USD
CY2019	crto	Deferred Tax Asset Liability Activity Acquisition Divestitures And Consolidations Increase Decrease DeferredTaxAssetLiabilityActivityAcquisitionDivestituresAndConsolidationsIncreaseDecrease	0	USD
CY2019	crto	Deferred Tax Asset Liability Activity Other Activity Adjustment DeferredTaxAssetLiabilityActivityOtherActivityAdjustment	11105000	USD
CY2019	crto	Deferred Tax Asset Liability Activity Currency Translation Adjustments Gain Loss DeferredTaxAssetLiabilityActivityCurrencyTranslationAdjustmentsGainLoss	-261000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	18713000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	91214000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	88644000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	90745000	USD
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	65143036	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	66456890	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	64305965	shares
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.40
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.33
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.41
CY2017	us-gaap	Net Income Loss NetIncomeLoss	91214000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	88644000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	90745000	USD
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	65143036	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	66456890	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	64305965	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1401957	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	786932	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	978521	shares
CY2017	crto	Incremental Common Shares Attributableto Dilutive Effectof Sharebased Payment Arrangements Options And Bspce IncrementalCommonSharesAttributabletoDilutiveEffectofSharebasedPaymentArrangementsOptionsAndBSPCE	1239149	shares
CY2018	crto	Incremental Common Shares Attributableto Dilutive Effectof Sharebased Payment Arrangements Options And Bspce IncrementalCommonSharesAttributabletoDilutiveEffectofSharebasedPaymentArrangementsOptionsAndBSPCE	382512	shares
CY2019	crto	Incremental Common Shares Attributableto Dilutive Effectof Sharebased Payment Arrangements Options And Bspce IncrementalCommonSharesAttributabletoDilutiveEffectofSharebasedPaymentArrangementsOptionsAndBSPCE	279270	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	67829	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	36570	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	34832	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	67851971	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	67662904	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	65598588	shares
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.34
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.31
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.38
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1031005	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1504718	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1262819	shares
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2296692000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2300314000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2261516000	USD
CY2018Q4	us-gaap	Noncurrent Assets NoncurrentAssets	296049000	USD
CY2019Q4	us-gaap	Noncurrent Assets NoncurrentAssets	281047000	USD

Files In Submission

Name	View Source	Status
0001576427-20-000011-index-headers.html	Edgar Link	pending
0001576427-20-000011-index.html	Edgar Link	pending
0001576427-20-000011.txt	Edgar Link	pending
0001576427-20-000011-xbrl.zip	Edgar Link	pending
adsperformance.jpg	Edgar Link	pending
criteo10-k2019.htm	Edgar Link	pending
criteo10-k2019_htm.xml	Edgar Link	completed
criteoa03.jpg	Edgar Link	pending
criteoplatformv4.jpg	Edgar Link	pending
crto-20191231.xsd	Edgar Link	pending
crto-20191231_cal.xml	Edgar Link	unprocessable
crto-20191231_def.xml	Edgar Link	unprocessable
crto-20191231_lab.xml	Edgar Link	unprocessable
crto-20191231_pre.xml	Edgar Link	unprocessable
exhibit1018amendmentag.htm	Edgar Link	pending
exhibit1019employeeagr.htm	Edgar Link	pending
exhibit211subsidiaries.htm	Edgar Link	pending
exhibit231consent.htm	Edgar Link	pending
exhibit311ceocert.htm	Edgar Link	pending
exhibit312cfocertifica.htm	Edgar Link	pending
exhibit31bylawsstatuts.htm	Edgar Link	pending
exhibit321ceocfocertif.htm	Edgar Link	pending
exhibit42-agreementtof.htm	Edgar Link	pending
exhibit43-descriptiono.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R100.htm	Edgar Link	pending
R101.htm	Edgar Link	pending
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R104.htm	Edgar Link	pending
R105.htm	Edgar Link	pending
R106.htm	Edgar Link	pending
R107.htm	Edgar Link	pending
R108.htm	Edgar Link	pending
R109.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R110.htm	Edgar Link	pending
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R122.htm	Edgar Link	pending
R123.htm	Edgar Link	pending
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R125.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
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$CRTO
Criteo S.A. Stock $crto

2018 Q4 Form 10-K Financial Statement

#000157642720000011 Filed on March 02, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CRTO Criteo S.A. Stock $crto

2018 Q4 Form 10-K Financial Statement

#000157642720000011 Filed on March 02, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CRTO
Criteo S.A. Stock $crto