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Earnings Per Share - Schedule of Earnings Per Share Information (Details) - USD ($)
shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Net income (loss) attributable to MasTec:      
Net income (loss) - basic $ 399,042 $ 162,788 $ (49,949)
Net income (loss) -diluted $ 399,042 $ 162,788 $ (49,949)
Weighted average shares outstanding:      
Weighted average shares outstanding - basic (in shares) 77,866 78,049 77,535
Dilutive common stock equivalents (in shares) 828 831 0
Weighted average shares outstanding - diluted (in shares) 78,694 78,880 77,535
Anti-dilutive common stock (in shares) 11 16 1,100