Goodwill (Tables)

12 Months Ended

Dec. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill by Reporting Segment

The changes in the carrying amount of goodwill and accumulated impairment losses by reporting segment during the years ended December 31, 2024 and 2023 are as follows:

(in millions)	Infrastructure Solutions		Materials Solutions		Total
Balance, December 31, 2022:
Goodwill	$	47.6	$	31.6	$	79.2
Accumulated impairment losses	(21.8)		(12.2)		(34.0)
Net	$	25.8	$	19.4	$	45.2
2023 Activity:
Foreign currency translation	$	0.4	$	0.7	$	1.1
Total 2023 activity	$	0.4	$	0.7	$	1.1
Balance, December 31, 2023:
Goodwill	$	48.0	$	32.3	$	80.3
Accumulated impairment	(21.8)		(12.2)		(34.0)
Net	$	26.2	$	20.1	$	46.3
2024 Activity:
Foreign currency translation	$	(1.2)	$	0.1	$	(1.1)
Impairment	—		(20.2)		(20.2)
Total 2024 activity	$	(1.2)	$	(20.1)	$	(21.3)
Balance, December 31, 2024:
Goodwill	$	46.8	$	32.2	$	79.0
Accumulated impairment	(21.8)		(32.2)		(54.0)
Net	$	25.0	$	—	$	25.0