Note 3 - Earnings Per Common Share (Tables)

6 Months Ended

Mar. 31, 2023

Notes Tables

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Three Months Ended March 31,				Six Months Ended March 31,
	2023		2022		2023		2022
Basic Earnings Per Common Share:
Net Income	$	179.2	$	173.6	$	270.2	$	229.3
Less: Provision for preferred dividends		3.7		3.7		7.4		7.4
Income allocated to participating securities		0.4		0.2		0.5		0.3
Income Available to Common Shareholders	$	175.1	$	169.7	$	262.3	$	221.6
Weighted Average Common Shares Outstanding (in millions)		52.5		51.8		52.5		51.7
Basic Earnings Per Common Share	$	3.33	$	3.27	$	5.00	$	4.28
Diluted Earnings Per Common Share:
Net Income	$	179.2	$	173.6	$	270.2	$	229.3
Less: Provision for preferred dividends		3.7		3.7		7.4		7.4
Income allocated to participating securities		0.4		0.2		0.5		0.3
Income Available to Common Shareholders	$	175.1	$	169.7	$	262.3	$	221.6
Weighted Average Common Shares Outstanding (in millions)		52.5		51.8		52.5		51.7
Dilutive Effect of forward sales of common stock, restricted stock and restricted stock units (in millions)*		0.1		0.1		0.1		0.1
Weighted Average Diluted Common Shares (in millions)		52.6		51.9		52.6		51.8
Diluted Earnings Per Common Share	$	3.33	$	3.27	$	4.99	$	4.28
* Calculation excludes certain outstanding or potential common shares (shown in millions by period at the right) attributable to (1) forward sales of common stock, (2) stock units subject to performance or market conditions, and (3) restricted stock, which could have a dilutive effect in the future		0.5		0.2		0.4		0.2