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Inventories - Narrative (Details) - USD ($) $ in Millions | Feb. 28, 2021 | Aug. 31, 2020
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Inventory Disclosure [Abstract] |  |
LIFO inventory, difference amount had FIFO inventory valuation method been used | $ 284.3 | $ 93.5
Percentage of LIFO inventory | 11.00% | 16.00%
Inventory [Line Items] |  |
Percentage of LIFO inventory | 11.00% | 16.00%

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- Definition Amount by which inventory stated at last-in first-out (LIFO) is less than (in excess of) inventory stated at other inventory cost methods. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(c)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition The percentage of LIFO (last in first out) inventory to total inventory as of the balance sheet date if other than 100 percent. + References No definition available. + Details
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