Non Operating Income and Expenses (Tables)

12 Months Ended

Dec. 31, 2023

Other Income and Expenses [Abstract]

Schedule of Other Nonoperating Income (Expense)

Non-Operating Expense

The major components of “Non-operating expense” in the Consolidated Statements of Operations are:

	Years Ended December 31,
	2023		2022		2021
Interest expense	$	(31.9)	$	(34.3)	$	(35.5)
Capitalized interest	0.8		0.2		0.3
Amortization of debt issuance costs	(1.3)		(1.5)		(1.8)
Interest income	2.4		1.0		0.6
Interest expense, net	(30.0)		(34.6)		(36.4)
Debt retirement costs	(3.1)		(0.5)		(1.0)
Non-operating pension and other postretirement employee benefits expense (income)	0.1		(5.7)		(10.4)
Total non-operating expense	$	(33.0)	$	(40.9)	$	(47.7)