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Property, Plant and Equipment, Net (Tables)
3 Months Ended
Mar. 31, 2020
Property, Plant and Equipment, Net.  
Schedule of property, plant and equipment

March 31,

December 31,

($ in millions)

    

2020

    

2019

Land

$

151

$

153

Buildings

1,425

1,433

Machinery and equipment

5,467

5,513

Construction-in-progress

591

434

7,634

7,533

Accumulated depreciation

(3,135)

(3,063)

$

4,499

$

4,470