Earnings Per Share - Schedule of Basic Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Earnings Per Share [Abstract]
Net income (loss) attributable to shareholders of Criteo S.A.	$ 6,245	$ 6,927	$ 40,476	$ (7,758)
Weighted average number of shares outstanding of Criteo S.A.	54,695,112	56,297,666	54,840,650	56,173,218
Basic earnings (loss) per share (in dollars per share)	$ 0.11	$ 0.12	$ 0.74	$ (0.14)

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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+ Details