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Inventories
6 Months Ended
Jun. 30, 2021
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories as of June 30, 2021 and December 31, 2020 were as follows:

In millionsJune 30, 2021December 31, 2020
Raw material$546 $454 
Work-in-process166 136 
Finished goods779 681 
LIFO reserve(91)(82)
Total inventories$1,400 $1,189