Acquisitions (Summary Of Acquisition And Integration Related Charges) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Business Acquisition [Line Items]
Acquisition and integration related charges	$ 2.3	$ 5.2	$ 12.0	$ 11.6
HHI Business [Member]
Business Acquisition [Line Items]
Acquisition and integration related charges	0.9	1.8	5.5	5.7
PetMatrix [Member]
Business Acquisition [Line Items]
Acquisition and integration related charges	0.8	1.7	4.5	2.0
Armored AutoGroup [Member]
Business Acquisition [Line Items]
Acquisition and integration related charges		0.3	0.6	2.1
Other [Member]
Business Acquisition [Line Items]
Acquisition and integration related charges	$ 0.6	$ 1.4	$ 1.4	$ 1.8