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Property, plant and equipment (Tables)
6 Months Ended
Jun. 30, 2018
Summary of Property, Plant and Equipment, Net

Property, plant and equipment, net, consisted of the following:

 

     June 30,      December 31,  
     2018      2017  
     (U.S. $ in millions)  

Machinery and equipment

   $ 5,737      $ 5,809  

Buildings

     3,183        3,329  

Computer equipment and other assets

     2,080        2,016  

Payments on account

     587        634  

Land (1)

     374        390  
  

 

 

    

 

 

 
     11,961        12,178  

Less—accumulated depreciation

     4,748        4,505  
  

 

 

    

 

 

 
   $ 7,213      $ 7,673  
  

 

 

    

 

 

 

 

(1)

Land includes long-term leasehold rights in various locations, with useful lives between 30 and 99 years.