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Property, Plant and Equipment, Net (Tables)
12 Months Ended
Dec. 31, 2019
Property, Plant and Equipment, Net.  
Schedule of property, plant and equipment

December 31,

December 31,

($ in millions)

    

2019

    

2018

Land

$

153

$

159

Buildings

1,433

1,359

Machinery and equipment

5,513

5,250

Construction-in-progress

434

509

7,533

7,277

Accumulated depreciation

(3,063)

(2,735)

$

4,470

$

4,542