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Property and Equipment
12 Months Ended
Dec. 31, 2017
Property, Plant and Equipment [Abstract]  
Property and Equipment
Property and Equipment
Property and equipment consist of the following:  
 
December 31,
 
2017
 
2016
Land
$
102

 
$
96

Buildings
238

 
212

Non-rental vehicles
112

 
93

Machinery and equipment
103

 
87

Furniture and fixtures
204

 
188

Leasehold improvements
245

 
221

 
1,004

 
897

Less accumulated depreciation and amortization
(537
)
 
(467
)
Property and equipment, net
$
467

 
$
430