Defined Benefit and Postretirement Benefits (Tables)

6 Months Ended

Jun. 30, 2021

Retirement Benefits [Abstract]

Schedule of Defined Benefit Plans Disclosures

For all plans, the components of net periodic benefit for the three months ended June 30, 2021 and 2020 are as follows:

	Pension				Postretirement
(in millions)	2021		2020		2021		2020
Service cost	$	1.7	$	1.6	$	0.1	$	0.1
Interest cost	5.2		6.6		0.2		0.2
Expected return on plan assets	(15.7)		(14.0)		—		—
Amortization of prior service cost	(0.1)		(0.1)		(0.3)		(0.3)
Amortization of net loss	6.5		4.9		—		—
Net periodic benefit	$	(2.4)	$	(1.0)	$	—	$	—

For all plans, the components of net periodic benefit for the six months ended June 30, 2021 and 2020 are as follows:

	Pension				Postretirement
(in millions)	2021		2020		2021		2020
Service cost	$	3.2	$	3.2	$	0.2	$	0.1
Interest cost	10.4		13.2		0.3		0.4
Expected return on plan assets	(29.8)		(28.7)		—		—
Recognized curtailment gain	(0.7)		—		—		—
Amortization of prior service cost	(0.1)		(0.1)		(0.5)		(0.5)
Amortization of net loss	13.1		9.7		—		—
Net periodic benefit	$	(3.9)	$	(2.7)	$	—	$	—

Schedule of Contributions By Benefit Plan Type

We expect to contribute the following to our pension and postretirement plans:

(in millions)	Pension		Postretirement
Expected contributions in 2021	$	20.7	$	2.6
Amounts contributed during the six months ended June 30, 2021	$	16.9	$	0.3