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Earnings per share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Earnings Per Share [Abstract]      
Net income (loss) attributable to Arcos Dorados Holdings Inc. available to common shareholders $ 45,486 $ (149,451) $ 79,896
Weighted-average number of common shares outstanding - Basic (in shares) 210,386,761 208,378,442 206,964,903
Incremental shares from vesting of restricted share units (in shares) 154,802 287,965 664,375
Weighted-average number of common shares outstanding - Diluted (in shares) 210,541,563 208,666,407 207,629,278
Basic net income (loss) per common share attributable to Arcos Dorados Holdings Inc. (in dollars per share) $ 0.22 $ (0.72) $ 0.39
Diluted net income (loss) per common share attributable to Arcos Dorados Holdings Inc. (in dollars per share) $ 0.22 $ (0.72) $ 0.38