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Inventories
12 Months Ended
Dec. 31, 2019
Inventory Disclosure [Abstract]  
Inventories Inventories
The components of total inventories are summarized as follows: 
 
December 31,
(in millions)
2019
 
2018
Finished goods
$
212

 
$
248

Work in process
47

 
45

Raw materials
280

 
302

Total inventories
$
539

 
$
595