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Acquisitions (Summary Of Acquisition And Integration Related Charges) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016
Business Acquisition [Line Items]
Acquisition and integration related charges	$ 14.3	$ 15.6	$ 34.1
HHI Business [Member]
Business Acquisition [Line Items]
Acquisition and integration related charges	6.0	5.6	12.6
PetMatrix [Member]
Business Acquisition [Line Items]
Acquisition and integration related charges	4.9	4.5
Armored AutoGroup [Member]
Business Acquisition [Line Items]
Acquisition and integration related charges	0.9	2.4	14.1
GloFish [Member]
Business Acquisition [Line Items]
Acquisition and integration related charges	0.2	1.0
Other [Member]
Business Acquisition [Line Items]
Acquisition and integration related charges	$ 2.3	$ 2.1	$ 7.4

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- Definition

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- Definition

Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs.

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