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Inventories
12 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consisted of the following:
December 31,
 (in Millions)20212020
Finished goods$559.2 $434.6 
Work in process730.8 621.9 
Raw materials, supplies and other231.9 165.7 
FIFO inventory$1,521.9 $1,222.2 
Less: Excess of FIFO cost over LIFO cost(116.2)(126.6)
Net inventories$1,405.7 $1,095.6 

Approximately 41 percent and 33 percent of our inventories in 2021 and 2020, respectively, were recorded on the LIFO basis.