Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2011

Goodwill and Other Intangible Assets [Abstract]

Changes in carrying amount of goodwill

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

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(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.

Components of intangible assets

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

Estimated future amortization expense of intangible assets

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