v3.8.0.1
Property, Software and Equipment (Tables)
12 Months Ended
Dec. 31, 2017
Property, Plant and Equipment [Abstract]  
Property, Software and Equipment
Property, software and equipment consist of the following as of December 31 ($ in millions):
 
2017
 
2016
Land
$
130


$
113

Building
367


271

Computer software
542


377

Computer hardware
248

 
179

Furniture and office equipment
186


126

Leasehold improvements
221


173

 
1,694

 
1,239

Less accumulated depreciation
(590
)
 
(442
)
Property, software and equipment, net
$
1,104

 
$
797