Earnings Per Share - Schedule of Basic Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Earnings Per Share [Abstract]
Net income attributable to shareholders of Criteo S.A.	$ 21,250	$ 26,987	$ 59,178	$ 34,231
Weighted average number of shares outstanding of Criteo S.A. (in shares)	52,986,068	54,684,560	53,480,338	54,915,140
Basic earnings per share (in dollars per share)	$ 0.40	$ 0.49	$ 1.11	$ 0.62

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

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+ Details

- Definition

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

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