Pension Plans

3 Months Ended

Mar. 31, 2024

Retirement Benefits [Abstract]

Pension Plans

Pension Plans

	First Quarter
	2024		2023
Service cost — benefits earned during the period (in millions)	$	1.5	$	1.5
Pension non-service cost (income) (in millions):
Interest cost on benefit obligation	$	8.2	$	8.4
Expected return on plan assets	(13.6)		(13.6)
Amortization of net prior service cost (income)	(0.2)		(0.5)
Amortization of net actuarial loss (gain)	2.9		2.4
Pension non-service cost (income)	$	(2.7)	$	(3.3)