Business Segment Data - Narrative (Details) - segment	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Number of operating segments	2
Number of reportable segments	2
Single customer | Customer concentration risk | Operating revenue
Segment Reporting Information [Line Items]
Concentration risk (as a percentage)		16.80%	14.50%
Single customer | Customer concentration risk | Operating revenue | Operating segments | E&M
Segment Reporting Information [Line Items]
Concentration risk (as a percentage)		22.50%	19.60%
Single customer | Customer concentration risk | Operating revenue | Operating segments | T&D
Segment Reporting Information [Line Items]
Concentration risk (as a percentage)	17.20%
Single customer | Customer concentration risk | Trade receivables
Segment Reporting Information [Line Items]
Concentration risk (as a percentage)		14.10%
Two customers | Customer concentration risk | Operating revenue | Operating segments | T&D
Segment Reporting Information [Line Items]
Concentration risk (as a percentage)		31.20%	29.80%