Employee Benefit Plans (Tables)

3 Months Ended

Dec. 31, 2024

Retirement Benefits [Abstract]

Components of Pension and Other Postretirement Benefit Income

The following table summarizes the components of pension and other postretirement plan (income) expense:

	Pension benefits				Other postretirement benefits
(In millions)	2024		2023		2024		2023
Three months ended December 31
Interest cost	$	17.4	$	20.9	$	0.3	$	0.3
Expected return on plan assets	(18.0)		(17.2)		—		—
Amortization of prior service credits	—		—		(0.6)		(0.6)
Net periodic benefit (income) costs	$	(0.6)	$	3.7	$	(0.3)	$	(0.3)