Earnings Per Share - SBH (Schedule Of Weighted Average Shares) (Details) shares in Millions	12 Months Ended
	Sep. 30, 2019 shares	Sep. 30, 2018 shares	Sep. 30, 2017 shares
Basic
Basic, weighted average shares	50.7	36.9	32.2
Diluted
Diluted, weighted average shares	50.7	37.0	32.2
HRG [Member]
Basic
Basic, weighted average shares			200.0
Basic, share conversion at 1 to 0.1613			32.2
Diluted
Diluted, weighted average shares			200.0
Diluted, share conversion at 1 to 0.1613			32.2
Reverse stock split conversion			0.1613