Divestitures (Summary Of Components Of Income From Discontinued Operations Before Income Taxes) (Details) - USD ($) $ in Millions		3 Months Ended	9 Months Ended
Jan. 02, 2019	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Loss) Income from discontinued operations before income taxes		$ (4.9)	$ 27.8	$ 861.0	$ 549.5
Global Battery And Lighting [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss (Gain) on sale	$ 990.6
Global Auto Care [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Write-down of assets of business held for sale to fair value less cost to sell				110.0
Discontinued Operations, Held-For-Sale [Member] \| Global Battery And Lighting [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales			187.6	249.0	645.7
Cost of goods sold			118.7	164.6	410.0
Gross profit			68.9	84.4	235.7
Operating expenses			63.6	57.0	177.4
Operating income (loss)			5.3	27.4	58.3
Interest expense			13.8	23.3	39.0
Other non-operating expense, net			1.2	0.5	1.4
Loss (Gain) on sale		5.7		(990.6)
Reclassification of accumulated other comprehensive income				18.5
(Loss) Income from discontinued operations before income taxes		(5.7)	(9.7)	975.7	17.9
Discontinued Operations, Held-For-Sale [Member] \| Global Auto Care [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales			175.2	87.7	362.4
Cost of goods sold			101.3	52.5	217.8
Gross profit			73.9	35.2	144.6
Operating expenses			35.5	35.7	87.8
Operating income (loss)			38.4	(0.5)	56.8
Interest expense			0.5	0.7	1.5
Other non-operating expense, net			0.4	0.2	0.1
Write-down of assets of business held for sale to fair value less cost to sell		(0.8)		110.0
Reclassification of accumulated other comprehensive income				3.3
(Loss) Income from discontinued operations before income taxes		$ 0.8	$ 37.5	$ (114.7)	$ 55.2

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Amount before tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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Amount after tax of (gain) loss recognized for the (reversal of write-down) write-down to fair value, less cost to sell, of a discontinued operation.

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