Other Expenses (Tables)

12 Months Ended

Sep. 30, 2022

Other Expenses [Abstract]

Schedule of Other Operating Cost and Expense, by Component

Other expenses consisted of the following, for the periods indicated.

	Year Ended September 30,
(in millions)	2022		2021		2020
Non-income taxes	$	13.5	$	14.8	$	6.6
Insurance	10.8		7.1		4.7
Employee related expenses	9.6		7.0		4.7
Other direct business expenses	10.0		6.3		4.6
Membership fees	3.3		2.8		2.4
Director and public company expenses	1.8		1.5		1.4
Office expenses	1.7		1.3		1.8
Other expenses	9.9		5.5		3.4
Total other expenses	$	60.6	$	46.3	$	29.6