Earnings per Share (Tables)

12 Months Ended

Sep. 30, 2020

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)	2020		2019		2018
Numerator:
Net income	$	169.6	$	85.1	$	55.5
Less: Allocation to participating securities	(4.0)		(1.5)		(0.9)
Net income allocated to common stockholders	$	165.6	$	83.6	$	54.6
Denominator:
Weighted average number of:
Common shares outstanding	18,824,328		18,738,905		18,549,011
Dilutive potential common shares outstanding:
Share-based awards	356,151		275,490		385,819
Diluted shares outstanding	19,180,479		19,014,395		18,934,830