Goodwill and Other Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [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, 2014:  
 
General rentals
 
Trench safety,
power and HVAC, and pump solutions
 
Total
Balance at January 1, 2012 (1)
$
167

 
$
122

 
$
289

Goodwill related to acquisitions (2)
2,661

 
20

 
2,681

Balance at December 31, 2012 (1)
2,828

 
142

 
2,970

Foreign currency translation and other adjustments
(16
)
 
(1
)
 
(17
)
Balance at December 31, 2013 (1)
2,812

 
141

 
2,953

Goodwill related to acquisitions (2)
12

 
330

 
342

Foreign currency translation and other adjustments
(20
)
 
(3
)
 
(23
)
Balance at December 31, 2014 (1)
$
2,804

 
$
468

 
$
3,272

 
_________________
(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.
(2)
Includes goodwill adjustments for the effect on goodwill of changes to net assets acquired during the measurement period, which were not significant to our previously reported operating results or financial condition.
Components of intangible assets
Other intangible assets were comprised of the following at December 31, 2014 and 2013:  
 
December 31, 2014
 
Weighted-Average Remaining
Amortization Period 
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net
Amount
Non-compete agreements
40 months
 
$
70

 
$
31

 
$
39

Customer relationships
12 years
 
$
1,496

 
$
451

 
$
1,045

Trade names and associated trademarks
28 months
 
$
80

 
$
58

 
$
22


 
 
December 31, 2013
 
Weighted-Average Remaining
Amortization Period 
 
Gross
Carrying
Amount
 
Accumulated
Amortization 
 
Net
Amount 
Non-compete agreements
40 months
 
$
54

 
$
18

 
$
36

Customer relationships
13 years
 
$
1,227

 
$
285

 
$
942

Trade names and associated trademarks
40 months
 
$
81

 
$
41

 
$
40
Schedule of acquired intangible assets
 
December 31, 2014
 
Weighted-Average Remaining
Amortization Period 
 
 
Net Carrying
Amount
Non-compete agreements
60 months
 
 
$
13

Customer relationships
10 years
 
 
$
236
Estimated future amortization expense of intangible assets
As of December 31, 2014, estimated amortization expense for other intangible assets for each of the next five years and thereafter is as follows:  
2015
$
195

2016
174

2017
146

2018
125

2019
110

Thereafter
356

Total
$
1,106