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Inventories (Tables)
9 Months Ended
Oct. 31, 2020
Inventory Disclosure [Abstract]  
Components of Inventories
(in millions)October 31, 2020January 31, 2020October 31, 2019
Finished goods          $1,585.1           $1,532.5           $1,543.9 
Raw materials794.5 776.8 886.5 
Work-in-process105.5 154.6 146.6 
Inventories, net          $2,485.1           $2,463.9           $2,577.0