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

 

(Dollars in millions)

 

December 31,

 

 

 

2021

 

 

2020

 

 

2019

 

Raw material

 

$

395

 

 

$

379

 

 

$

366

 

Work in progress

 

 

283

 

 

 

292

 

 

 

257

 

Finished products

 

 

190

 

 

 

220

 

 

 

200

 

Inventories

 

$

868

 

 

$

891

 

 

$

824

 

Inventory reserve at beginning of year

 

$

(93

)

 

$

(83

)

 

$

(85

)

Reversal of (addition to) reserve

 

 

(3

)

 

 

(3

)

 

 

6

 

Translation difference

 

 

5

 

 

 

(6

)

 

 

(5

)

Inventory reserve at end of year

 

$

(91

)

 

$

(93

)

 

$

(83

)

Total inventories, net of reserve

 

$

777

 

 

$

798

 

 

$

741