Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2023

Retirement Benefits [Abstract]

Summary of Components of Net Periodic Benefit Cost

The components of net periodic benefit cost follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2023		2022		2023		2022
Service cost	$	0.5	$	0.6	$	1.6	$	1.8
Interest cost	1.6		0.8		4.7		2.4
Expected return on plan assets	(2.0)		(2.3)		(6.1)		(7.1)
Amortization of unrecognized loss(1)	0.3		1.2		1.0		3.7
Settlement expense	—		0.4		—		1.3
Net periodic benefit cost	$	0.4	$	0.7	$	1.2	$	2.1

(1)Includes amortization of unrecognized actuarial (gain) loss and prior service credits and excludes provision for income tax of $(0.1) million and $(0.2) million for the three and nine months ended September 30, 2023, respectively, and $(0.3) million and $(0.9) million for the three and nine months ended September 30, 2022, respectively.