Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2020

Retirement Benefits [Abstract]

Summary of Components of Net Periodic Benefit Cost and Other Amounts Recognized in Other Comprehensive Loss

Components of the net periodic benefit cost for the Company's pension and post-retirement plans for the three and six months ended June 30, 2020 and 2019 are shown below (in millions):

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Service cost	$	0.2	$	0.6	$	0.4	$	1.1
Interest cost	1.8		2.1		3.5		4.2
Expected return on plan assets	(1.7)		(1.8)		(3.4)		(3.6)
Amortization of net loss	0.6		1.0		1.2		2.0
Amortization of prior service credit	—		(0.2)		—		(0.3)
Net periodic benefit cost	$	0.9	$	1.7	$	1.7	$	3.4