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Inventories (Details) - USD ($)
$ in Millions
Feb. 23, 2018
Feb. 24, 2017
Inventory Disclosure [Abstract]    
Raw Materials and Work in Process $ 98.3 $ 79.6
Finished goods 105.3 101.7
Inventories, gross 203.6 181.3
LIFO reserve 19.0 18.2
Inventories 184.6 163.1
FIFO inventory amount $ 76.3 $ 77.9