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Inventory (Tables)
12 Months Ended
Dec. 31, 2021
Inventory  
Inventory

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($ in millions)

    

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At December 31:

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2021

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2020

Finished goods

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$

208

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$

163

Work in process and raw materials

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1,442

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1,649

Total

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$

1,649

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$

1,812

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