Inventories - Schedule of Inventories (Details) - USD ($) $ in Millions	Jun. 30, 2020	Sep. 30, 2019
Inventories [Abstract]
Finished goods and work in process	$ 937.1	$ 938.9
Raw materials	788.0	818.8
Spare parts and supplies	513.8	479.7
Inventories at FIFO cost	2,238.9	2,237.4
LIFO reserve	(101.2)	(129.9)
Net inventories	$ 2,137.7	$ 2,107.5

The amount of FIFO (first in first out) inventory present at the reporting date when inventory is also valued using different valuation methods.

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Amount before valuation reserves of merchandise or goods held by the entity that are readily available for sale and items held by the entity which are partially complete or in the process of being readied for sale.

+ References

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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

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- Definition

Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

+ References

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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- Definition

Inventories.

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No definition available.

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- Definition

Inventories supplies and spare parts.

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