Segment and Geographic Information (Narrative) (Details)	12 Months Ended
Dec. 31, 2021 customer plant Segment	Dec. 31, 2020 customer	Dec. 31, 2019 customer
Segment Reporting Information [Line Items]
Number of Operating Segments \| Segment	2
Number of Building Product Facilities \| plant	75
Performance and Essential Materials
Segment Reporting Information [Line Items]
Number of major customers	0	0	0
Housing and Infrastructure Products
Segment Reporting Information [Line Items]
Number of major customers	0	0	0

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8672-108599

Name:	us-gaap_NumberOfOperatingSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration