XML 27 R15.htm IDEA: XBRL DOCUMENT v3.8.0.1
Property, Plant and Equipment
 3 Months Ended
Mar. 31, 2018
Property, Plant and Equipment  
Property, Plant and Equipment

9.     Property, Plant and Equipment

 

 

 

 

 

 

 

 

 

 

March 31,

 

December 31,

($ in millions)

    

2018

    

2017

 

 

 

 

 

 

 

Land

 

$

174

 

$

172

Buildings

 

 

1,391

 

 

1,390

Machinery and equipment

 

 

5,378

 

 

5,282

Construction-in-progress

 

 

666

 

 

542

 

 

 

7,609

 

 

7,386

Accumulated depreciation

 

 

(2,882)

 

 

(2,776)

 

 

$

4,727

 

$

4,610

 

Property, plant and equipment are stated at historical or acquired cost. Depreciation expense amounted to $125 million and $107 million for the three months ended March 31, 2018 and 2017, respectively.