Earnings Per Common Share (Tables)

12 Months Ended

Sep. 30, 2021

Earnings Per Share [Abstract]

Schedule of Basic and Diluted Earnings Per Share

	2021		2020		2019
Basic Earnings Per Common Share:
Net Income	$	271.7	$	88.6	$	184.6
Less:   Provision for preferred dividends		14.8		14.8		5.3
Income allocated to participating securities		0.4		0.1		0.4
Net Income Available to Common Shareholders	$	256.5	$	73.7	$	178.9
Weighted Average Common Shares Outstanding (in millions)		51.6		51.2		50.7
Basic Earnings Per Share of Common Stock	$	4.97	$	1.44	$	3.53
Diluted Earnings per Common Share:
Net Income	$	271.7	$	88.6	$	184.6
Less:   Provision for preferred dividends		14.8		14.8		5.3
Income allocated to participating securities		0.4		0.1		0.4
Net Income Available to Common Shareholders	$	256.5	$	73.7	$	178.9
Weighted Average Common Shares Outstanding (in millions)		51.6		51.2		50.7
Dilutive Effect of Restricted Stock and Restricted Stock Units (in millions)*		0.1		0.1		0.1
Weighted Average Diluted Common Shares (in millions)		51.7		51.3		50.8
Diluted Earnings Per Share of Common Stock	$	4.96	$	1.44	$	3.52
* Calculation excludes certain outstanding common shares (shown in millions by     period at the right) attributable to stock units subject to performance or market     conditions and restricted stock, which could have a dilutive effect in the future		0.1		0.1		0.1