Pension Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2021

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 June 30,				For the Six Months Ended June 30,
	2021		2020		2021		2020
Service cost	$	1.5	$	1.4	$	3.1	$	2.8
Interest cost	1.5		1.6		3.1		3.3
Expected return on plan assets	(2.7)		(2.0)		(5.5)		(4.2)
Amortization of prior service cost	0.1		—		0.1		0.1
Recognized actuarial loss	2.1		1.4		4.2		2.9
Other	—		—		(0.3)		—
Settlements and curtailments	—		—		0.7		—
Net periodic benefit cost	$	2.5	$	2.4	$	5.4	$	4.9