Summary of Significant Accounting Policies (Inventories) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Sep. 30, 2018
Inventories
Percentage of inventories determined by LIFO method	30.00%	23.00%
Inventory, Net [Abstract]
Inventory, Work in Process, Net of Reserves	$ 42.4	$ 44.8
Inventory, Finished Goods, Net of Reserves	120.5	139.7
Inventory, Raw Materials, Net of Reserves	106.7	107.2
Total	269.6	291.7
Excess of Replacement or Current Costs over Stated LIFO Value	$ 0.3	$ 0.6

The excess of replacement or current cost over the stated LIFO (last in first out) inventory value when the LIFO inventory method is utilized.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of unprocessed items to be consumed in the manufacturing or production process.

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Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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The percentage of LIFO (last in first out) inventory to total inventory as of the balance sheet date if other than 100 percent.

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