Divestitures (Summary Of Components Of Income From Discontinued Operations) (Details) - USD ($) $ in Millions	2 Months Ended	3 Months Ended		9 Months Ended
	Nov. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net (loss) income from discontinued operations				$ 497.9	$ 295.2
Net (loss) income from discontinued operations attributable to controlling interest		$ (0.1)	$ 18.7	479.6	220.8
HRG Insurance Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales	$ 378.6		428.9		1,170.7
Operating expenses	329.9		362.2		894.5
Operating income	48.7		66.7		276.2
Interest expense	4.0		6.1		18.2
(Loss) income from discontinued operations before income taxes	476.4		24.5		293.6
Income tax (benefit) expense	16.5		16.8		98.2
Net (loss) income from discontinued operations	459.9		7.7		195.4
Net income from discontinued operations attributable to non-controlling interest	5.4		4.1		31.6
Net (loss) income from discontinued operations attributable to controlling interest	$ 454.5		3.6		163.8
Discontinued Operations, Held-For-Sale [Member] | Global Batteries & Appliances [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales		442.0	441.0	1,473.2	1,464.0
Cost of goods sold		298.1	287.8	982.4	951.5
Gross profit		143.9	153.2	490.8	512.5
Operating expenses		137.3	106.2	403.3	336.6
Operating income		6.6	47.0	87.5	175.9
Interest expense		14.1	12.7	40.3	37.2
Other non-operating expense, net		3.7	0.7	4.1	0.6
(Loss) income from discontinued operations before income taxes		(11.2)	33.6	43.1	138.1
Income tax (benefit) expense		(1.7)	5.3	11.1	38.3
Net (loss) income from discontinued operations		(9.5)	28.3	32.0	99.8
Net income from discontinued operations attributable to non-controlling interest		0.1	1.7	0.1	1.5
Net (loss) income from discontinued operations attributable to controlling interest		$ (9.6)	$ 26.6	$ 31.9	$ 98.3