Components of Net Periodic Benefit Cost (Tables)

3 Months Ended

Mar. 31, 2026

Retirement Benefits [Abstract]

Schedule of Net Periodic Benefit Cost

	Three months ended March 31,
Pension Benefits	2026		2025
Service cost	$	3.6	$	0.7
Interest cost	11.6		3.3
Expected return on plan assets	(9.3)		(3.9)
Amortization of prior service benefit	0.1		0.1
Amortization of net loss	1.8		1.4
Net periodic benefit cost	$	7.8	$	1.6

	Three months ended March 31,
Other Postretirement Benefits	2026		2025
Service cost	$	0.1	$	—
Interest cost	1.3		1.0
Amortization of net loss	0.3		0.2
Net periodic benefit cost	$	1.7	$	1.2