Segment Information - Summary of Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Revenue	$ 345.5	$ 350.0	$ 654.7	$ 697.9
Infrastructure Solutions
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Revenue	221.4	199.4	423.6	414.9
Materials Solutions
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Revenue	124.1	150.8	231.1	283.0
Operating Segments
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Revenue	345.5	350.2	654.7	697.9
Corporate & Other operations	37.4	44.0	68.3	87.1
Operating Segments | Infrastructure Solutions
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Revenue	221.4	199.4	423.6	414.9
Corporate & Other operations	27.2	25.7	52.8	54.2
Operating Segments | Materials Solutions
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Revenue	124.1	150.8	231.1	283.0
Corporate & Other operations	10.2	18.3	15.5	32.9
Intersegment Eliminations
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Revenue	9.8	10.4	17.1	17.4
Intersegment Eliminations | Infrastructure Solutions
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Revenue	8.9	10.1	15.7	16.7
Intersegment Eliminations | Materials Solutions
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Revenue	0.9	0.3	1.4	0.7
Corporate and Other
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Revenue	0.0	(0.2)	0.0	0.0
Corporate & Other operations	$ (9.8)	$ (11.8)	$ (21.8)	$ (19.7)