Pension Plans (Tables)

6 Months Ended

Mar. 31, 2022

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

The Company’s net periodic pension (benefit)/cost for these plans are as follows:

	For the Quarters Ended March 31,
	U.S.				International
	2022		2021		2022		2021
Service cost	$	—	$	—	$	0.2	$	0.2
Interest cost	3.2		3.2		0.4		0.4
Expected return on plan assets	(5.7)		(5.5)		(0.9)		(0.8)
Amortization of unrecognized net losses	1.6		1.8		0.3		0.4
Net periodic (benefit)/cost	$	(0.9)	$	(0.5)	$	—	$	0.2
	For the Six Months Ended March 31,
	U.S.				International
	2022		2021		2022		2021
Service cost	$	—	$	—	$	0.4	$	0.4
Interest cost	6.4		6.4		0.9		0.8
Expected return on plan assets	(11.4)		(11.0)		(1.7)		(1.6)
Amortization of unrecognized net losses	3.2		3.6		0.4		0.8
Net periodic (benefit)/cost	$	(1.8)	$	(1.0)	$	—	$	0.4