Pension and Other Postemployment Benefits (Tables)

9 Months Ended

Sep. 30, 2023

Pension and Other Postemployment Benefits [Abstract]

Net Periodic Benefit Expense

Net periodic benefit expense:

	Defined Benefit Pension Plans				Postemployment Arrangements
	Nine Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Service cost	$	2.5	$	2.3	$	2.6	$	3.3
Interest cost	7.8		2.8		4.3		2.0
Expected return on plan assets	(0.7)		(0.7)		—		—
Amortization of prior service cost	0.2		0.3		2.9		2.8
Amortization of actuarial losses	0.6		2.9		—		1.9
Total net periodic benefit expense	$	10.4	$	7.6	$	9.8	$	10.0