Earnings per Share (Tables)

12 Months Ended

Sep. 30, 2023

Earnings Per Share [Abstract]

Schedule of Calculation of Numerator and Denominator in Earnings Per Share

The following is a reconciliation of the numerator and denominator of the diluted net income per share computations for the periods presented below.

	Year Ended September 30,
(in millions, except share amounts)	2023		2022		2021
Numerator:
Net income	$	238.5	$	207.1	$	116.3
Less: Allocation to participating securities	(8.1)		(6.1)		(3.5)
Net income allocated to common stockholders	$	230.4	$	201.0	$	112.8
Denominator:
Weighted average number of:
Common shares outstanding	19,957,333		19,570,403		19,130,643
Dilutive potential common shares outstanding:
Share-based awards	662,007		497,137		547,525
Diluted shares outstanding	20,619,340		20,067,540		19,678,168
Earnings per share - basic	$	11.55	$	10.27	$	5.90
Earnings per share - diluted	$	11.18	$	10.01	$	5.74

The following table presents unaudited proforma earnings per share on a post-split basis for the periods indicated.

	Year Ended September 30,
(in millions, except share amounts)	2023		2022		2021
	(Unaudited)
Numerator:
Net income allocated to common stockholders, as reported	$	230.4	$	201.0	$	112.8
Proforma Denominator (with effect of stock split):
Weighted average number of:
Common shares outstanding	29,936,000		29,355,605		28,695,965
Dilutive potential common shares outstanding:
Share-based awards	993,011		745,706		821,288
Proforma diluted shares outstanding	30,929,011		30,101,311		29,517,253
Proforma earnings per share - basic	$	7.71	$	6.85	$	3.93
Proforma earnings per share - diluted	$	7.45	$	6.67	$	3.82