Business Segments (Narrative) (Details)	3 Months Ended
Mar. 31, 2023 segment
Segment Reporting [Abstract]
Number of reportable segments	3
Revenue Benchmark \| Customer Concentration Risk \| Civil, Building, And Specialty Contractors
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	19.50%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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