Pensions and Other Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2024

Retirement Benefits [Abstract]

Net Periodic Benefit Cost

Components of net periodic benefit cost for the three months ended March 31, 2024 and 2023 were as follows:

	Pension and Other Postretirement Benefits
	Three Months Ended
	March 31,
(In millions)	2024		2023
Service cost	$	7.9	$	7.1
Interest cost	16.6		18.3
Expected return on plan assets	(16.9)		(16.4)
Amortization of prior service costs	0.5		—
Recognized net actuarial gains	(4.3)		(5.0)
Net periodic benefit cost	$	3.8	$	4.0