Income Taxes (Schedule Of Components Of Income Tax Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Current tax expense: U.S. Federal	$ (47.6)	$ 58.1	$ 6.9
Current tax expense: Foreign	44.3	34.7	13.2
Current tax expense: State and local	2.7	1.0	0.6
Total current tax expense	(0.6)	93.8	20.7
Deferred tax (benefit) expense: U.S. Federal	9.9	(539.7)	(18.0)
Deferred tax (benefit) expense: Foreign	(4.9)	3.1	(10.1)
Deferred tax (benefit) expense: State and local	(11.5)	(19.9)	(4.4)
Total deferred tax (benefit) expense	(6.5)	(556.5)	(32.5)
Income tax (benefit) expense	(7.1)	(462.7)	(11.8)
SB/RH [Member]
Current tax expense: U.S. Federal	(47.6)	58.4	4.2
Current tax expense: Foreign	44.3	34.7	13.2
Current tax expense: State and local	2.7	1.0	0.6
Total current tax expense	(0.6)	94.1	18.0
Deferred tax (benefit) expense: U.S. Federal	24.3	(170.0)	(12.2)
Deferred tax (benefit) expense: Foreign	(4.9)	3.0	(10.1)
Deferred tax (benefit) expense: State and local	(8.1)	(3.9)	(4.3)
Total deferred tax (benefit) expense	11.3	(170.9)	(26.6)
Income tax (benefit) expense	$ 10.7	$ (76.8)	$ (8.6)