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Inventories (Tables)
12 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
Inventories

December 31, 

    

2021

    

2020

(in millions)

Raw materials

$

291

$

183

Work in process

 

83

 

83

Finished goods

 

1,104

 

1,314

$

1,478

$

1,580