Business Segments (Narrative) (Details) - segment	3 Months Ended
Business Segments (Narrative) (Details) - segment	Mar. 31, 2026	Mar. 31, 2025
Segment Reporting [Abstract]
Number of reportable segments	3
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of reportable segments	3
Revenue Benchmark \| Customer Concentration Risk \| Civil, Building, And Specialty Contractors \| Customer One
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk (as a percent)	13.30%	15.60%
Revenue Benchmark \| Customer Concentration Risk \| Civil, Building, And Specialty Contractors \| Customer Two
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk (as a percent)	12.60%

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.