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Property, Plant and Equipment (Tables)
 12 Months Ended
Dec. 31, 2017
Property, Plant and Equipment  
Schedule of property, plant and equipment

 

 

 

 

 

 

 

 

 

December 31,

($ in millions)

    

2017

    

2016

 

 

 

 

 

 

 

Land

 

$

172

 

$

105

Buildings

 

 

1,390

 

 

1,301

Machinery and equipment

 

 

5,282

 

 

4,723

Construction-in-progress

 

 

542

 

 

503

 

 

 

7,386

 

 

6,632

Accumulated depreciation

 

 

(2,776)

 

 

(2,245)

 

 

$

4,610

 

$

4,387