Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2024

Fair Value Disclosures [Abstract]

Schedule of Financial Instruments Recorded at Fair Value

Financial Instruments Recorded at Fair Value (in millions):

	September 30, 2024								December 31, 2023
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Assets:
Cash and cash equivalents	$	194.3	$	—	$	—	$	194.3	$	201.2	$	—	$	—	$	201.2
Deferred compensation asset (a)	0.4		—		—		0.4		3.3		—		—		3.3
Liabilities:
Deferred compensation obligation (a)	$	0.4	$	—	$	—	$	0.4	$	3.3	$	—	$	—	$	3.3

(a)    The deferred compensation obligation represents the balance of deferred compensation plus net investment earnings. The deferred compensation plan is funded through a rabbi trust. Trust funds are invested in mutual funds for which unit prices are quoted in active markets and are classified within Level 1 of the valuation hierarchy.

Fair Value Option, Disclosures

The carrying value and estimated fair value of long-term debt were as follows (in millions):

	September 30, 2024					December 31, 2023
	Carrying Value			Estimated Fair Value (a)		Carrying Value			Estimated Fair Value (a)
8.25% Notes	$	89.6	(b)	$	73.8	$	95.7	(b)	$	71.7

(a) Based on bid/ask quotes as of or near the balance sheet date, which are considered Level 2 inputs.

(b)    The carrying value of the 8.25% Notes consists of the principal balance of $74.3 million and the sum of current and noncurrent interest payment obligations until maturity. Refer to Note 6, Debt.