Fair value measurements and financial instruments (Tables)

12 Months Ended

Dec. 31, 2025

Fair value measurements and financial instruments

Schedule of financial instruments recorded on a fair value basis

	December 31, 2024				December 31, 2025
	Carrying		Fair		Carrying		Fair
	amount		value		amount		value
	(In millions)
Cash, cash equivalents and restricted cash equivalents	$	378.6	$	378.6	$	228.7	$	228.7
Long-term debt:
Kronos 9.50% Senior Secured Notes due 2029		365.4		403.4		503.7		469.9
Kronos 3.75% Senior Secured Notes due 2025		78.3		77.9		—		—
Kronos revolving credit facility		10.0		10.0		—		—
LandWell bank note payable		11.4		11.4		10.7		10.7