Pension and Other Postemployment Benefits

6 Months Ended

Jun. 30, 2023

Pension and Other Postemployment Benefits [Abstract]

Pension and Other Postemployment Benefits

Pension and Other Postemployment BenefitsNet periodic benefit expense:

	Defined Benefit Pension Plans				Postemployment Arrangements
	Six Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
Service cost	$	1.7	$	0.8	$	1.7	$	2.2
Interest cost	5.1		1.7		2.8		1.3
Expected return on plan assets	(0.5)		(0.3)		—		—
Amortization of prior service cost	0.2		0.2		1.9		1.9
Amortization of actuarial losses	0.4		1.7		—		1.3
Total net periodic benefit expense	$	6.9	$	4.1	$	6.4	$	6.7

We contributed $0.3 million to our defined benefit pension plans in both the six months ended June 30, 2023 and 2022