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Fixed Assets
 12 Months Ended
Dec. 31, 2016
Property, Plant and Equipment [Abstract]  
Fixed Assets
Fixed Assets
Fixed assets at December 31, 2016 and 2015 consisted of the following:
 
December 31,
 
2016
 
2015
Land
$
9,908

 
$
9,908

Buildings
185,431

 
218,261

Machinery and equipment
802,992

 
984,634

 
998,331

 
1,212,803

Accumulated depreciation
(683,728
)
 
(882,715
)
Property, plant and equipment, net
$
314,603

 
$
330,088

 
 
 
 
Rental property and equipment
$
400,913

 
$
404,348

Accumulated depreciation
(212,859
)
 
(226,833
)
Rental property and equipment, net
$
188,054

 
$
177,515


Depreciation expense was $138 million, $136 million and $165 million for the years ended December 31, 2016, 2015 and 2014, respectively.
Included in Machinery and equipment is $192 million of capitalized software as of December 31, 2016.