Segment Information (Net Sales Relating To Segments) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 29, 2020	Mar. 31, 2019	Mar. 29, 2020	Mar. 31, 2019
Revenue from External Customer [Line Items]
Net sales	$ 937.8	$ 906.7	$ 1,809.3	$ 1,787.0
Operating Segments [Member]
Revenue from External Customer [Line Items]
Net sales	937.8	906.7	1,809.3	1,787.0
Hardware & Home Improvement [Member] | Operating Segments [Member]
Revenue from External Customer [Line Items]
Net sales	329.1	331.1	626.8	636.2
Home And Personal Care [Member] | Operating Segments [Member]
Revenue from External Customer [Line Items]
Net sales	232.7	221.7	554.8	538.9
Global Pet Care [Member] | Operating Segments [Member]
Revenue from External Customer [Line Items]
Net sales	236.9	214.9	442.7	419.6
Home and Garden Business [Member] | Operating Segments [Member]
Revenue from External Customer [Line Items]
Net sales	$ 139.1	$ 139.0	$ 185.0	$ 192.3