{"cik":2052568,"taxonomy":"us-gaap","tag":"LesseeOperatingLeaseLiabilityPaymentsDue","label":"Lessee, Operating Lease, Liability, to be Paid","description":"Amount of lessee's undiscounted obligation for lease payment for operating lease.","entityName":"Legence Corp.","units":{"USD":[{"end":"2025-12-31","val":154283000,"accn":"0002052568-26-000008","fy":2025,"fp":"FY","form":"10-K","filed":"2026-03-30","frame":"CY2025Q4I"}]}}