Fair value measurements and financial instruments (Tables)

6 Months Ended

Jun. 30, 2025

Fair value measurements and financial instruments

Schedule of financial instruments recorded on a fair value basis

	Fair Value Measurements
				Quoted		Significant
				prices in		other		Significant
				active		observable		unobservable
				markets		input		inputs
		Total		(Level 1)		(Level 2)		(Level 3)
	(In millions)
Asset (liability)
December 31, 2024:
Current marketable securities	$	1.9	$	—	$	1.9	$	—
Noncurrent marketable securities		5.7		2.6		3.1		—
Earn-out liability (See Note 18)		(4.3)		—		—		(4.3)
June 30, 2025:
Current marketable securities	$	2.4	$	—	$	2.4	$	—
Noncurrent marketable securities		4.7		2.7		2.0		—
Currency forward contract		3.2		3.2		—		—
Earn-out liability (See Note 18)		(4.6)		—		—		(4.6)

Schedule of financial instruments that are not carried at fair value which require fair value disclosure

	December 31, 2024				June 30, 2025
	Carrying		Fair		Carrying		Fair
	amount		value		amount		value
	(In millions)
Cash, cash equivalents and restricted cash equivalents	$	378.6	$	378.6	$	223.0	$	223.0
Long-term debt:
Kronos fixed rate 9.50% Senior Secured Notes due 2029		365.4		403.4		410.7		444.3
Kronos fixed rate 3.75% Senior Secured Notes due 2025		78.3		77.9		87.9		87.8
Kronos revolving credit facility		10.0		10.0		37.0		37.0
LandWell bank note payable		11.4		11.4		11.1		11.1