Pension and Other Post-Retirement Benefits

9 Months Ended

Sep. 30, 2025

Retirement Benefits [Abstract]

Pension and Other Post-Retirement Benefits

Pension and Other Post-Retirement Benefits

The following table shows the components of net periodic cost for the three months ended September 30, 2025 and 2024 (in millions):

	2025 Pension Benefits		2024 Pension Benefits		2025 Retiree Health and Life		2024 Retiree Health and Life
Service cost	$	1.5	$	1.6	$	—	$	—
Interest cost	4.1		4.1		0.2		0.2
Expected return on plan assets	(5.4)		(5.4)		—		—
Amortization of (1):
Unrecognized prior service credit	—		—		—		(0.1)
Unrecognized net actuarial loss (gain)	0.3		0.3		(0.2)		(0.1)
Net periodic cost	$	0.5	$	0.6	$	—	$	—

The following table shows the components of net periodic cost for the nine months ended September 30, 2025 and 2024 (in millions):

	2025 Pension Benefits		2024 Pension Benefits		2025 Retiree Health and Life		2024 Retiree Health and Life
Service cost	$	4.6	$	4.6	$	0.1	$	0.1
Interest cost	12.6		12.3		0.5		0.5
Expected return on plan assets	(16.3)		(16.2)		—		—
Amortization of (1):
Unrecognized prior service credit	—		—		—		(0.2)
Unrecognized net actuarial loss (gain)	0.7		0.8		(0.4)		(0.4)
Net periodic cost	$	1.6	$	1.5	$	0.2	$	—

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(1)    Amounts reclassified from accumulated other comprehensive loss.

The service cost component of net periodic cost was $1.5 million and $4.7 million for the three and nine months ended September 30, 2025, and $1.6 million and $4.7 million for the three and nine months ended September 30, 2024 and is recorded in selling, general and administrative expense.

The non-service components totaled income of $1.0 million and $2.9 million for the three and nine months ended September 30, 2025 and $1.0 million and $3.2 million for the three and nine months ended September 30, 2024, and are recorded in other income (expense) in the statements of comprehensive income.