Earnings Per Common Share

6 Months Ended

Mar. 31, 2021

Earnings Per Share [Abstract]

Earnings Per Common Share

3. EARNINGS PER COMMON SHARE

	Three Months Ended March 31,				Six Months Ended March 31,
	2021		2020		2021		2020
Basic Earnings Per Common Share:
Net Income	$	187.4	$	133.6	$	276.3	$	200.6
Less: Provision for preferred dividends		3.7		3.7		7.4		7.4
Income allocated to participating securities		0.3		0.2		0.4		0.3
Income Available to Common Shareholders	$	183.4	$	129.7	$	268.5	$	192.9
Weighted Average Common Shares Outstanding (in millions)		51.6		51.0		51.6		51.0
Basic Earnings Per Common Share	$	3.56	$	2.55	$	5.21	$	3.78
Diluted Earnings Per Common Share:
Net Income	$	187.4	$	133.6	$	276.3	$	200.6
Less: Provision for preferred dividends		3.7		3.7		7.4		7.4
Income allocated to participating securities		0.3		0.2		0.4		0.3
Income Available to Common Shareholders	$	183.4	$	129.7	$	268.5	$	192.9
Weighted Average Common Shares Outstanding (in millions)		51.6		51.0		51.6		51.0
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)		51.7		51.1		51.7		51.1
Diluted Earnings Per Common Share	$	3.55	$	2.54	$	5.20	$	3.77
* 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		0.1