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Business Segment Data - Narrative (Details) - segment	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
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%
Single customer | Customer concentration risk | Operating revenue | Operating segments | E&M
Segment Reporting Information [Line Items]
Concentration risk (as a percentage)			22.50%
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)	16.30%
Single customer | Customer concentration risk | Trade receivables | E&M
Segment Reporting Information [Line Items]
Concentration risk (as a percentage)		10.40%
Single customer | Customer concentration risk | Segment
Segment Reporting Information [Line Items]
Concentration risk (as a percentage)	16.50%
Customer one | Customer concentration risk | Operating revenue | Operating segments | T&D
Segment Reporting Information [Line Items]
Concentration risk (as a percentage)			17.50%
Customer one | Customer concentration risk | Trade receivables | E&M
Segment Reporting Information [Line Items]
Concentration risk (as a percentage)	19.90%
Customer one | Customer concentration risk | Segment | E&M
Segment Reporting Information [Line Items]
Concentration risk (as a percentage)	21.10%
Customer one | Customer concentration risk | Segment | T&D
Segment Reporting Information [Line Items]
Concentration risk (as a percentage)	16.00%
Customer two | Customer concentration risk | Operating revenue | Operating segments | T&D
Segment Reporting Information [Line Items]
Concentration risk (as a percentage)			13.70%
Customer two | Customer concentration risk | Segment | E&M
Segment Reporting Information [Line Items]
Concentration risk (as a percentage)	10.40%

X

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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-Name Accounting Standards Codification
-Section 50
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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.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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