Acquisitions and Other Investments (Tables)

6 Months Ended

Jun. 30, 2013

Big Country [Member]

Business Acquisition [Line Items]

Schedule of Business Acquisitions, Consideration Paid and Purchase Price Allocation

The following table summarizes the preliminary estimated fair value of consideration paid and the allocation of purchase price as of the date of acquisition:

	May 1, 2013
	(in millions)
Purchase price consideration:
Cash	$	103.5
Fair value of contingent consideration (earn-out liability)	22.8
Total consideration transferred	$	126.3
Purchase price allocation to identifiable assets acquired and liabilities assumed:
Current assets	$	69.0
Property and equipment	42.6
Pre-qualifications	29.6
Finite-lived intangible assets	10.1
Current liabilities	(21.9		)
Long-term debt	(24.4		)
Deferred income taxes	(10.1		)
Total identifiable net assets	$	94.9
Goodwill	$	31.4
Total consideration allocated	$	126.3

Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination

The fair values and weighted average useful lives of Big Country's acquired finite-lived intangible assets were assigned as follows as of the date of acquisition:

	Fair Value		Weighted Average Useful Life
	(in millions)		(in years)
Backlog	$	1.8	1
Non-compete agreements	1.8		8
Customer relationships	6.5		6
Total acquired amortizing intangibles	$	10.1	5

Acquisitions During 2013 [Member]

Business Acquisition [Line Items]

Business Acquisition, Pro Forma Information

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2013		2012		2013		2012
	(unaudited, in millions)				(unaudited, in millions)
Revenue	$	995.1	$	1,039.5	$	1,987.9	$	1,849.8
Net income	$	34.7	$	29.6	$	57.9	$	47.2

Results of Acquired Businesses 2013

Revenues and net income resulting from the year over year incremental impact of the Company's 2013 acquisitions are included in MasTec's consolidated results of operations as follows (in millions):

	For the Three and Six Months Ended June 30, 2013
Revenue	$	39.6
Net income	$	1.5

Bottom Line Services [Member]

Business Acquisition [Line Items]

Schedule of Business Acquisitions, Consideration Paid and Purchase Price Allocation

The following table summarizes the estimated fair value of consideration paid and the allocation of purchase price for BLS, as revised, as of the date of acquisition:

	December 1, 2012
	(in millions)
Purchase price consideration:
Cash	$	67.6
Fair value of contingent consideration (earn-out liability)	11.1
Total consideration transferred	$	78.7
Purchase price allocation to identifiable assets acquired and liabilities assumed:
Current assets	$	36.3
Property and equipment	12.6
Trade name	2.6
Non-compete agreements	0.5
Customer relationships	24.4
Current liabilities	(12.8		)
Total identifiable net assets	$	63.6
Goodwill	$	15.1
Total consideration allocated	$	78.7

Acquisitions During 2012 [Member]

Business Acquisition [Line Items]

Business Acquisition, Pro Forma Information

Revenues and net income resulting from the year over year incremental impact of the Company's 2012 acquisitions are included in MasTec's consolidated results of operations as follows (in millions):

	For the Three Months Ended June 30, 2013		For the Six Months Ended June 30, 2013
Revenue	$	47.0	$	90.0
Net income	$	2.0	$	3.8