Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

Identifiable intangible assets

Identifiable intangible assets at September 30, 2012 and December 31, 2011 are comprised of the following:

September 30, 2012:

	Weighted- average estimated useful life	Original cost		Accumulated amortization			Net book value
Customer relationships	25	$	38.5	$	(2.8	)	$	35.7
Backlog	2	0.8		(0.8		)	—
Trademark and trade name	3	0.4		(0.2		)	0.2
Total	24	$	39.7	$	(3.8	)	$	35.9

December 31, 2011:

	Weighted-average estimated useful life	Original cost		Accumulated amortization			Net book value
Customer relationships	25	$	38.5	$	(1.7	)	$	36.8
Backlog	2	0.8		(0.7		)	0.1
Trademark and trade name	3	0.4		(0.1		)	0.3
Total	24	$	39.7	$	(2.5	)	$	37.2

Expected amortization of intangible assets for the next five years

The expected amortization of intangible assets for the remainder of 2012 and the next four calendar years and thereafter is as follows:

2012	$	0.5
2013	1.7
2014	1.6
2015	1.6
2016	1.6
Thereafter	28.9
Total	$	35.9