Retirement Plans (Tables)

3 Months Ended

Dec. 31, 2019

Retirement Benefits [Abstract]

Schedule of Net Periodic Pension and Postretirement Cost (Benefit)

The Company’s net periodic pension and postretirement cost for these plans was as follows: 

	Three Months Ended December 31,
	2019		2018
Service cost	$	1.1	$	0.7
Interest cost	3.4		4.7
Expected return on plan assets	(5.8)		(6.3)
Recognized net actuarial loss	2.3		1.0
Settlement loss recognized	0.2		—
Net periodic cost	$	1.2	$	0.1