Revenue Recognition (Disaggregation Of Revenue) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Disaggregation of Revenue [Line Items]
Revenue	$ 906.7	$ 882.6	$ 1,787.0	$ 1,804.9
Operating Segments [Member]
Disaggregation of Revenue [Line Items]
Revenue	906.7	882.6	1,787.0	1,804.9
Operating Segments [Member] | Licensing [Member]
Disaggregation of Revenue [Line Items]
Revenue	4.9		10.8
Operating Segments [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenue	1.2		2.4
Operating Segments [Member] | North America [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Revenue	682.9		1,279.3
Operating Segments [Member] | EMEA [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Revenue	148.1		340.3
Operating Segments [Member] | Latin America [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Revenue	44.4		97.3
Operating Segments [Member] | Asia-Pacific [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Revenue	25.2		56.9
Operating Segments [Member] | Hardware & Home Improvement [Member]
Disaggregation of Revenue [Line Items]
Revenue	331.1	318.5	636.2	644.4
Operating Segments [Member] | Hardware & Home Improvement [Member] | Licensing [Member]
Disaggregation of Revenue [Line Items]
Revenue	0.4		0.7
Operating Segments [Member] | Hardware & Home Improvement [Member] | North America [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Revenue	313.1		602.3
Operating Segments [Member] | Hardware & Home Improvement [Member] | EMEA [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Revenue	0.1		0.2
Operating Segments [Member] | Hardware & Home Improvement [Member] | Latin America [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Revenue	11.7		22.0
Operating Segments [Member] | Hardware & Home Improvement [Member] | Asia-Pacific [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Revenue	5.8		11.0
Operating Segments [Member] | Home And Personal Care [Member]
Disaggregation of Revenue [Line Items]
Revenue	221.7	231.1	538.9	573.1
Operating Segments [Member] | Home And Personal Care [Member] | Licensing [Member]
Disaggregation of Revenue [Line Items]
Revenue	2.2		6.1
Operating Segments [Member] | Home And Personal Care [Member] | North America [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Revenue	91.4		208.3
Operating Segments [Member] | Home And Personal Care [Member] | EMEA [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Revenue	87.8		227.6
Operating Segments [Member] | Home And Personal Care [Member] | Latin America [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Revenue	28.5		66.7
Operating Segments [Member] | Home And Personal Care [Member] | Asia-Pacific [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Revenue	11.8		30.2
Operating Segments [Member] | Global Pet Supplies [Member]
Disaggregation of Revenue [Line Items]
Revenue	214.9	211.2	419.6	413.6
Operating Segments [Member] | Global Pet Supplies [Member] | Licensing [Member]
Disaggregation of Revenue [Line Items]
Revenue	1.7		3.4
Operating Segments [Member] | Global Pet Supplies [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenue	1.2		2.4
Operating Segments [Member] | Global Pet Supplies [Member] | North America [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Revenue	140.9		279.2
Operating Segments [Member] | Global Pet Supplies [Member] | EMEA [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Revenue	60.2		112.5
Operating Segments [Member] | Global Pet Supplies [Member] | Latin America [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Revenue	3.3		6.4
Operating Segments [Member] | Global Pet Supplies [Member] | Asia-Pacific [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Revenue	7.6		15.7
Operating Segments [Member] | Home and Garden [Member]
Disaggregation of Revenue [Line Items]
Revenue	139.0	$ 121.8	192.3	$ 173.8
Operating Segments [Member] | Home and Garden [Member] | Licensing [Member]
Disaggregation of Revenue [Line Items]
Revenue	0.6		0.6
Operating Segments [Member] | Home and Garden [Member] | North America [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Revenue	137.5		189.5
Operating Segments [Member] | Home and Garden [Member] | Latin America [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Revenue	$ 0.9		$ 2.2