Earnings Per Common Share

6 Months Ended

Mar. 31, 2022

Earnings Per Share [Abstract]

Earnings Per Common Share

3. EARNINGS PER COMMON SHARE

	Three Months Ended March 31,				Six Months Ended March 31,
	2022		2021		2022		2021
Basic Earnings Per Common Share:
Net Income	$	173.6	$	187.4	$	229.3	$	276.3
Less: Provision for preferred dividends		3.7		3.7		7.4		7.4
Income allocated to participating securities		0.2		0.3		0.3		0.4
Income Available to Common Shareholders	$	169.7	$	183.4	$	221.6	$	268.5
Weighted Average Common Shares Outstanding (in millions)		51.8		51.6		51.7		51.6
Basic Earnings Per Common Share	$	3.27	$	3.56	$	4.28	$	5.21
Diluted Earnings Per Common Share:
Net Income	$	173.6	$	187.4	$	229.3	$	276.3
Less: Provision for preferred dividends		3.7		3.7		7.4		7.4
Income allocated to participating securities		0.2		0.3		0.3		0.4
Income Available to Common Shareholders	$	169.7	$	183.4	$	221.6	$	268.5
Weighted Average Common Shares Outstanding (in millions)		51.8		51.6		51.7		51.6
Dilutive Effect of Restricted Stock and Restricted Stock Units (in millions)*		0.1		0.1		0.1		0.1
Weighted Average Diluted Common Shares (in millions)		51.9		51.7		51.8		51.7
Diluted Earnings Per Common Share	$	3.27	$	3.55	$	4.28	$	5.20
* 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		0.2		0.1		0.2		0.1