Debt (Tables)

12 Months Ended

Dec. 31, 2012

Long-term Debt, Unclassified [Abstract]

Schedule of Long Term Debt Instruments

The carrying value of debt is composed of the following as of the dates indicated (in millions):

		December 31,
Description	Maturity Date	2012			2011
Credit facility	August 22, 2016	$	134.0		$	60.0
7.625% senior notes	February 1, 2017	150.0			150.0
New 4.0% Notes, $105.3 million principal amount	June 15, 2014	100.9			98.2
New 4.25% Notes, $97.0 million principal amount	December 15, 2014	92.1			89.9
Original 4.0% Notes	June 15, 2014	9.7			9.7
Original 4.25% Notes	December 15, 2014	3.0			3.0
Capital lease obligations, weighted average interest rate of 2.9%	In installments through June 2019	79.0			40.6
Notes payable for equipment, weighted average interest rate of 4.0%	In installments through May 2018	30.2			43.4
Total debt		$	598.9		$	494.8
Less current maturities		(52.6		)	(34.1		)
Long-term debt		$	546.3		$	460.7

Schedule of Convertible Notes, Carrying Amount Details

The carrying values of the debt and equity components of the New Notes as of the dates indicated are as follows (in millions):

	December 31, 2012						December 31, 2011
	New 4.0% Senior Convertible Notes			New 4.25% Senior Convertible Notes			New 4.0% Senior Convertible Notes			New 4.25% Senior Convertible Notes
Principal amount	$	105.3		$	97.0		$	105.3		$	97.0
Unamortized debt discount and financing costs	(4.4		)	(4.9		)	(7.1		)	(7.1		)
Net carrying amount of debt component	$	100.9		$	92.1		$	98.2		$	89.9
Carrying amount of equity component	$	8.9		$	8.5		$	8.9		$	8.5

Schedule of Maturities of Debt and Capital Leases

Contractual maturities of MasTec’s debt and capital lease obligations as of December 31, 2012 were as follows (in millions):

2013	$	52.6
2014	233.9
2015	18.4
2016	141.6
2017	152.0
Thereafter	0.4
Total	$	598.9

See Note 11 – Lease Obligations for additional information.

Schedule of Interest Expense, Net, Details

Details of interest expense, net, classified within continuing operations for the periods indicated is as follows (in millions):

	Year Ended December 31,
	2012			2011			2010
Interest expense:
Contractual and other interest expense	$	27.5		$	26.1		$	26.6
Accretion of senior convertible note discount	4.9			4.2			—
Deferred financing costs and commitment fees	5.4			4.7			3.6
Total interest expense	$	37.8		$	35.0		$	30.2
Interest income	(0.4		)	(0.5		)	(1.0		)
Interest expense, net	$	37.4		$	34.5		$	29.2