Earnings Per Share (Schedule of Earnings Per Share Information) (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Net income attributable to MasTec:
Net income - basic (in dollars)	$ 36,230	$ 43,112
Net income - diluted (in dollars)	$ 36,230	$ 43,112
Weighted average shares outstanding:
Weighted average shares outstanding - basic	74,738	74,991
Dilutive common stock equivalents (in shares)	675	587
Weighted average shares outstanding - diluted	75,413	75,578

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

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