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Inventories - Narrative (Details) - USD ($)
$ in Millions
May 31, 2022
Aug. 31, 2021
Inventory Disclosure [Abstract]    
LIFO inventory, difference amount had FIFO inventory valuation method been used $ 895.7 $ 359.2
Percentage of LIFO inventory 14.00% 13.00%
Inventory [Line Items]    
Percentage of LIFO inventory 14.00% 13.00%