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Goodwill and Other Intangible Assets
12 Months Ended
Dec. 31, 2011
Goodwill and Other Intangible Assets [Abstract]  
Goodwill and Other Intangible Assets Disclosure
Goodwill and Other Intangible Assets
We have made acquisitions over the years, principally during the period from 1997 to 2000, which included the recognition of a significant amount of goodwill. Goodwill is tested for impairment annually or more frequently if an event or circumstance indicates that an impairment loss may have been incurred.
In September 2011, the FASB issued guidance that simplified how entities test for goodwill impairment. This guidance permits entities to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform a two-step goodwill impairment test. We early adopted this guidance for our annual goodwill impairment test that was conducted as of October 1, 2011. In performing the 2011 goodwill impairment test, we assessed the relevant qualitative factors and concluded that it is more likely than not that the fair values of our reporting units (our regions) are greater than their carrying amounts. After reaching this conclusion, no further testing was performed. The qualitative factors we considered included, but were not limited to, general economic conditions, our outlook for construction activity, our recent and forecasted financial performance and the price of the Company's common stock.
The following table presents the changes in the carrying amount of goodwill for each of the three years in the period ended December 31, 2011:
 
 
General rentals
 
Trench safety,
power and HVAC
 
Total
Balance at January 1, 2009 (1)
$
97

 
$
93

 
$
190

Goodwill related to acquisitions
1

 

 
1

Foreign currency translation and other adjustments
5

 

 
5

Balance at December 31, 2009 (1)
103

 
93

 
196

Foreign currency translation and other adjustments
2

 

 
2

Balance at December 31, 2010 (1)
105

 
93

 
198

Goodwill related to acquisitions
65

 
31

 
96

Foreign currency translation and other adjustments
(3
)
 
(2
)
 
(5
)
Balance at December 31, 2011 (1)
$
167

 
$
122

 
$
289

 
_________________
(1)
The total carrying amount of goodwill for all periods in the table above is reflected net of $1,557 of accumulated impairment charges, which were primarily recorded in our general rentals segment.
Other intangible assets primarily consist of customer relationships and non-compete agreements. Intangible assets were comprised of the following at December 31, 2011 and 2010:
 
 
As of December 31, 2011
 
Weighted-Average Remaining
Amortization Period 
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net
Amount
Non-compete agreements
46 months
 
$
30

 
$
25

 
$
5

Customer relationships
9 years
 
$
121

 
$
43

 
$
78


 
 
As of December 31, 2010
 
Weighted-Average Remaining
Amortization Period 
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
 
Net
Amount
 
Non-compete agreements
27 months
 
$
25

 
$
24

 
$
1

Customer relationships
5 years
 
$
64

 
$
36

 
$
28



Our other intangibles assets, net at December 31, 2011 include customer relationships and non-compete agreements of $56 and $4, respectively, associated with the 2011 acquisitions discussed above (see note 1, "Organization, Description of Business and Consolidation"). No residual value has been assigned to these intangible assets. The weighted-average initial amortization periods for the acquired customer relationships and non-compete agreements are 11.6 years and 55 months, respectively.

Amortization expense for other intangible assets was $8, $7 and $8 for the years ended December 31, 2011, 2010 and 2009, respectively.
As of December 31, 2011, estimated amortization expense for other intangible assets for each of the next five years and thereafter is as follows:
 
2012
$
12

2013
12

2014
10

2015
9

2016
8

Thereafter
32

Total
$
83