Employee Benefits

6 Months Ended

Jun. 30, 2022

Retirement Benefits [Abstract]

Employee Benefits

5. Employee Benefits

Non-Union Pension Plans

The following table presents the primary components of net periodic pension expense (benefit) for our Company-sponsored pension plans:

	Three Months						Six Months
(in millions)	2022			2021			2022			2021
Interest cost	$	5.9		$	7.7		$	11.8		$	15.3
Expected return on plan assets		(8.5	)		(12.0	)		(17.0	)		(24.0	)
Amortization of prior net losses		2.2			3.0			4.4			6.1
Amortization of prior net service credit		(0.1	)		(0.1	)		(0.2	)		(0.2	)
Settlement adjustment		—			0.3			—			0.3
Total net periodic pension expense (benefit)	$	(0.5	)	$	(1.1	)	$	(1.0	)	$	(2.5	)