Pension and Other Benefits (Tables)

6 Months Ended

Jun. 30, 2024

Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]

Schedule of Net Pension and Other Benefit Costs

The following table sets forth the components of net pension and other benefit costs for the three and six months ended June 30, 2024 and 2023 (in millions):

	Pension Benefits				Other Benefits
	2024		2023		2024		2023
Three Months Ended June 30,
Service cost	$	0.2	$	0.1	$	—	$	—
Interest cost	8.3		8.8		0.2		0.2
Expected return on plan assets	(7.6)		(7.0)		—		—
Amortization of prior service cost	0.1		0.1		—		—
Amortization of actuarial losses (gains)	2.3		2.6		(0.1)		(0.1)
NET PERIODIC BENEFIT COST	$	3.3	$	4.6	$	0.1	$	0.1
Six Months Ended June 30,
Service cost	$	0.3	$	0.2	$	—	$	—
Interest cost	16.6		17.5		0.4		0.4
Expected return on plan assets	(15.3)		(14.0)		—		—
Amortization of prior service cost	0.2		0.2		—		—
Amortization of actuarial losses (gains)	5.4		5.2		(0.2)		(0.2)
NET PERIODIC BENEFIT COST	$	7.2	$	9.1	$	0.2	$	0.2