Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2012

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The following table provides details of the Company’s earnings per share calculations for the periods indicated (in thousands, except per share amounts). Note that earnings per share calculations may contain slight summation differences due to rounding.

	Years Ended December 31,
	2012			2011		2010
Basic
Net income attributable to MasTec:
Net income from continuing operations	$	116,639		$	97,454	$	66,166
Net (loss) income from discontinued operations	(9,213		)	8,547		24,362
Basic net income attributable to MasTec	$	107,426		$	106,001	$	90,528
Weighted average shares outstanding	78,275			82,182		76,132
Basic earnings (loss) per share:
Continuing operations	$	1.49		$	1.19	$	0.87
Discontinued operations	(0.12		)	0.10		0.32
Total basic earnings per share	$	1.37		$	1.29	$	1.19
Diluted
Net income attributable to MasTec:
Basic net income from continuing operations	$	116,639		$	97,454	$	66,166
Interest expense on Original 4.0% Notes, net of tax	234			331		2,667
Interest expense on Original 4.25% Notes, net of tax	77			154		2,464
Diluted net income from continuing operations	$	116,950		$	97,939	$	71,297
Net (loss) income from discontinued operations	(9,213		)	8,547		24,362
Diluted net income attributable to MasTec	$	107,737		$	106,486	$	95,659
Shares:
Basic weighted average shares outstanding	78,275			82,182		76,132
Dilutive common stock equivalents	888			1,127		994
Dilutive premium shares, New 4.0% Notes	1,044			1,067		—
Dilutive premium shares, New 4.25% Notes	1,074			1,095		—
Dilutive shares, Original 4.0% Notes	612			862		7,297
Dilutive shares, Original 4.25% Notes	194			383		6,462
Diluted weighted average shares outstanding	82,087			86,716		90,885
Diluted earnings (loss) per share:
Continuing operations	$	1.42		$	1.13	$	0.78
Discontinued operations	(0.11		)	0.10		0.27
Total diluted earnings per share	$	1.31		$	1.23	$	1.05

Schedule of Convertible Debt, By Dilutive and Anti-Dilutive Classification

The following table summarizes the principal amounts of the Company’s outstanding convertible notes for the periods indicated, including their respective classification within the computation of earnings per share for each period (in millions):

	Years Ended December 31,
	2012		2011		2010
Dilutive:
New 4.0% Notes (1)	$	105.3	$	105.3	N/A
New 4.25% Notes (1)	97.0		97.0		N/A
Original 4.0% Notes (2)	9.7		9.7		115.0
Original 4.25% Notes (2)	3.0		3.0		100.0
Total principal amount, dilutive outstanding convertible notes	$	215.0	$	215.0	$	215.0

(1)Dilutive shares associated with the New Notes are attributable to the premium over the respective conversion prices.

(2)Dilutive shares associated with the Original Notes are attributable to the underlying principal amounts.

Schedule Of Convertible Debt Information

Details of the calculation underlying the number of premium shares included in the Company’s diluted share count for the periods indicated are as follows (in thousands, except per share amounts):

	As of and for the Year Ended December 31, 2012				As of and for the Year Ended December 31, 2011
	New 4.0% Notes		New 4.25% Notes		New 4.0% Notes		New 4.25% Notes
Principal amount	$	105,322	$	97,000	$	105,322	$	97,000
Conversion price per share	$	15.76	$	15.48	$	15.76	$	15.48
Number of conversion shares, principal amount	6,683		6,268		6,683		6,268
Weighted average actual per share price	$	18.68	$	18.68	$	18.90	$	18.88
Excess over principal amount	$	19,494	$	20,064	$	20,968	$	21,139
Weighted average equivalent premium shares	1,044		1,074		1,067		1,095