Earnings Per Share - SBH (Schedule Of Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Numerator
Net (loss) income from continuing operations attributable to controlling interest	$ (55.0)	$ (32.6)	$ (84.2)	$ 7.5
(Loss) income from discontinued operations attributable to controlling interest	783.6	3.7	700.4	471.0
Net income (loss) attributable to controlling interest	$ 728.6	$ (28.9)	$ 616.2	$ 478.5
Denominator
Weighted average shares outstanding - basic	51.8	32.5	52.6	32.4
Dilutive shares				0.3
Weighted average shares outstanding - diluted	51.8	32.5	52.6	32.7
Earnings per share
Basic earnings per share from continuing operations	$ (1.06)	$ (1.00)	$ (1.60)	$ 0.23
Basic earnings per share from discontinued operations	15.13	0.11	13.32	14.52
Basic earnings per share	14.07	(0.89)	11.72	14.75
Diluted earnings per share from continuing operations	(1.06)	(1.00)	(1.60)	0.23
Diluted earnings per share from discontinued operations	15.13	0.11	13.32	14.42
Diluted earnings per share	$ 14.07	$ (0.89)	$ 11.72	$ 14.65
Weighted average number of anti-dilutive shares excluded from denominator	0.1		0.1