Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Statement of Comprehensive Income [Abstract]
Net loss	$ (34,564)	$ (3,869)	$ (17,170)	$ (23,008)
Other comprehensive income (loss), net:
Gain (loss) related to interest rate swaps, net of tax	3,756	(2,057)	6,866	(8,271)
Other comprehensive income (loss)	3,756	(2,057)	6,866	(8,271)
Comprehensive loss	(30,808)	(5,926)	(10,304)	(31,279)
Comprehensive (loss) income attributable to noncontrolling interests	(5,619)	1,401	(3,147)	3,475
Comprehensive loss attributable to Legence	$ (25,189)	$ (7,327)	$ (7,157)	$ (34,754)

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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