Strategic Transformation and Restructuring, Impairment and Other Asset Charges - Asset Impairment Charges (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Restructuring charges:
Total asset impairment charges	$ 3.0	$ 0.2	$ 3.0	$ 0.2
Materials Solutions
Restructuring charges:
Total asset impairment charges	0.0	0.2	0.0	0.2
Infrastructure Solutions
Restructuring charges:
Total asset impairment charges	2.1	0.0	2.1	0.0
Corporate
Restructuring charges:
Total asset impairment charges	$ 0.9	$ 0.0	$ 0.9	$ 0.0

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-URI https://asc.fasb.org/extlink&oid=126905981&loc=d3e2420-110228

Name:	us-gaap_AssetImpairmentCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration