Restructuring And Related Charges (Summary Of Costs Incurred By Reporting Segment) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	$ 20.7	$ 17.9	$ 42.2	$ 55.4
Cumulative costs	133.5		133.5
Future costs to be incurred	44.9		44.9
Corporate [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	14.5	1.9	25.4	5.7
Cumulative costs	33.9		33.9
Future costs to be incurred	12.0		12.0
Hardware & Home Improvement [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	1.1	12.0	4.3	40.8
Cumulative costs	84.5		84.5
Future costs to be incurred	1.1		1.1
Home And Personal Care [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	3.2	0.2	4.7	0.5
Cumulative costs	5.4		5.4
Global Pet Supplies [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	1.5	3.7	6.4	8.1
Cumulative costs	7.5		7.5
Future costs to be incurred	31.8		31.8
Home and Garden [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	0.4	$ 0.1	1.4	$ 0.3
Cumulative costs	$ 2.2		$ 2.2