Pension Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2020

Retirement Benefits [Abstract]

Components of net periodic benefit cost

The components of net periodic benefit cost for pension benefits were as follows (in millions):

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2020		2019		2020		2019
Service cost	$	1.4	$	1.2	$	4.2	$	3.6
Interest cost	1.6		2.7		5.0		8.1
Expected return on plan assets	(2.0)		(3.6)		(6.2)		(10.8)
Amortization of prior service cost	—		0.1		0.1		0.1
Recognized actuarial loss	1.4		1.4		4.3		4.3
Other	0.1		—		—		—
Settlements and curtailments	0.3		—		0.3		60.6
Net periodic benefit cost	$	2.8	$	1.8	$	7.7	$	65.9