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Property, Plant and Equipment, Net (Tables)
9 Months Ended
Sep. 30, 2021
Property, Plant and Equipment, Net.  
Schedule of property, plant and equipment

September 30,

December 31,

($ in millions)

    

2021

    

2020

Land

$

165

$

163

Buildings

1,944

1,653

Machinery and equipment

6,736

6,214

Construction-in-progress

1,130

883

9,975

8,913

Accumulated depreciation

(3,805)

(3,562)

$

6,170

$

5,351