Principles and Accounting Methods - Schedule of Consolidated Entities (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Criteo S.A
Schedule of Investments [Line Items]
Voting rights	100.00%	100.00%
Ownership Interest	100.00%	100.00%
Criteo France SAS
Schedule of Investments [Line Items]
Voting rights	100.00%	100.00%
Ownership Interest	100.00%	100.00%
Criteo Finance SAS
Schedule of Investments [Line Items]
Voting rights	100.00%
Ownership Interest	100.00%
Criteo Ltd
Schedule of Investments [Line Items]
Voting rights	100.00%	100.00%
Ownership Interest	100.00%	100.00%
Criteo Corp
Schedule of Investments [Line Items]
Voting rights	100.00%	100.00%
Ownership Interest	100.00%	100.00%
Criteo Gmbh
Schedule of Investments [Line Items]
Voting rights	100.00%	100.00%
Ownership Interest	100.00%	100.00%
Criteo KK
Schedule of Investments [Line Items]
Voting rights	66.00%	66.00%
Ownership Interest	66.00%	66.00%
Criteo Do Brasil LTDA
Schedule of Investments [Line Items]
Voting rights	100.00%	100.00%
Ownership Interest	100.00%	100.00%
Criteo BV
Schedule of Investments [Line Items]
Voting rights	100.00%	100.00%
Ownership Interest	100.00%	100.00%
Criteo Pty
Schedule of Investments [Line Items]
Voting rights	100.00%	100.00%
Ownership Interest	100.00%	100.00%
Criteo Srl
Schedule of Investments [Line Items]
Voting rights	100.00%	100.00%
Ownership Interest	100.00%	100.00%
Criteo Advertising (Beijng) Co. Ltd
Schedule of Investments [Line Items]
Voting rights	100.00%	100.00%
Ownership Interest	100.00%	100.00%
Criteo Singapore Pte. Ltd.
Schedule of Investments [Line Items]
Voting rights	100.00%	100.00%
Ownership Interest	100.00%	100.00%
Criteo LLC
Schedule of Investments [Line Items]
Voting rights	100.00%	100.00%
Ownership Interest	100.00%	100.00%
Criteo Europa S.L.
Schedule of Investments [Line Items]
Voting rights	100.00%	100.00%
Ownership Interest	100.00%	100.00%
Criteo Espana S.L.
Schedule of Investments [Line Items]
Voting rights	100.00%	100.00%
Ownership Interest	100.00%	100.00%
Criteo Canada Corp.
Schedule of Investments [Line Items]
Voting rights	100.00%	100.00%
Ownership Interest	100.00%	100.00%
Criteo Reklamcılık Hizmetleri ve Ticaret Anonim Şirketi
Schedule of Investments [Line Items]
Voting rights	100.00%	100.00%
Ownership Interest	100.00%	100.00%
Criteo MEA FZ-LLC
Schedule of Investments [Line Items]
Voting rights	100.00%	100.00%
Ownership Interest	100.00%	100.00%
Criteo India Private Ltd.
Schedule of Investments [Line Items]
Voting rights	100.00%
Ownership Interest	100.00%
HookLogic, Inc.
Schedule of Investments [Line Items]
Voting rights	100.00%
Ownership Interest	100.00%
HookLogic Ltd
Schedule of Investments [Line Items]
Voting rights	100.00%
Ownership Interest	100.00%
Hooklogic Brasil Solucoes EM Tecnología Ltda
Schedule of Investments [Line Items]
Voting rights	100.00%
Ownership Interest	100.00%