Earnings Per Share - Schedule of Earnings Per Share, Basic (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Earnings Per Share [Abstract]
Net income attributable to shareholders of Criteo S.A.	$ 144,602	$ 111,571	$ 53,259
Weighted average number of shares outstanding (in shares)	52,934,526	54,817,136	56,170,658
Basic earnings per share (in dollars per share)	$ 2.73	$ 2.04	$ 0.95

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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+ Details