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Fixed Assets
 12 Months Ended
Dec. 31, 2018
Property, Plant and Equipment [Abstract]  
Fixed Assets
Fixed Assets
Fixed assets at December 31, 2018 and 2017 consisted of the following:
 
December 31,
 
2018
 
2017
Land
$
9,333

 
$
9,333

Buildings and improvements
198,025

 
206,752

Capitalized software
283,446

 
224,754

Machinery and equipment
718,557

 
688,725

 
1,209,361

 
1,129,564

Accumulated depreciation
(799,247
)
 
(756,061
)
Property, plant and equipment, net
$
410,114

 
$
373,503

 
 
 
 
Rental property and equipment
$
371,908

 
$
386,039

Accumulated depreciation
(193,809
)
 
(202,083
)
Rental property and equipment, net
$
178,099

 
$
183,956


Depreciation expense was $159 million, $146 million and $134 million for the years ended December 31, 2018, 2017 and 2016, respectively.