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Inventories
 3 Months Ended
Mar. 31, 2020
Inventory Disclosure [Abstract]  
Inventories Inventories
The components of total inventories are summarized as follows: 
(in millions)March 31,
2020		December 31,
2019
Finished goods$228  $212  
Work in process51  47  
Raw materials294  280  
Total inventories$573  $539