Acquisitions Of Businesses	3 Months Ended
Acquisitions Of Businesses	Mar. 31, 2024
Business Combinations [Abstract]
Acquisitions Of Businesses	Acquisitions of Businesses Acquisitions are accounted for utilizing the acquisition method of accounting and the prices paid for them are allocated to their respective assets and liabilities based upon the estimated fair value of such assets and liabilities at the dates of their respective acquisition by us. During the first quarter of 2024, we entered into definitive agreements to acquire four companies for upfront consideration of approximately $175.0 million. Three of these transactions closed subsequent to March 31, 2024, and the fourth is expected to close later in the second quarter of 2024, subject to certain closing conditions. These acquisitions are comprised of: (a) two companies that will be included within our United States mechanical construction and facilities services segment, including: (i) a leading plumbing services provider in the Southeast region of the United States and (ii) a full service provider of mechanical construction and maintenance services in Central Texas, (b) a company, that will be included in our United States building services segment, which provides building automation and controls solutions in the Northeast region of the United States, and (c) an instrumentation and electrical contractor, that will be included in our United States industrial services segment, which provides electrical, automation, digital integration, and fabrication services to various energy sector and process equipment customers. During calendar year 2023, we acquired eight companies for total consideration of $99.6 million. Such acquisitions include: (a) a national energy efficiency specialty services firm, the results of operations of which have been included in our United States building services segment, and (b) seven companies, the results of operations of which were de minimis, consisting of: (i) three companies that have been included within our United States mechanical construction and facilities services segment, one of which provides mechanical and pipe fabrication services in the Midwestern region of the United States, and two of which add capabilities to our national fire protection services, and (ii) four mechanical services companies in the Western and Midwestern regions of the United States that have been included within our United States building services segment and enhance our presence in geographies where we have existing operations. In connection with these acquisitions, we acquired working capital of $9.1 million and other net liabilities of $6.1 million, including certain deferred tax liabilities, and have preliminarily ascribed $37.4 million to goodwill and $59.2 million to identifiable intangible assets. We expect that $29.6 million of the goodwill and identifiable intangible assets acquired in connection with these 2023 acquisitions will be deductible for tax purposes. The purchase price allocation for one of the businesses acquired in 2023 is preliminary and subject to change during its measurement period. As we finalize such purchase price allocation, adjustments may be recorded relating to finalization of intangible asset valuations, tax matters, or other items. Although not expected to be significant, such adjustments may result in changes in the valuation of assets and liabilities acquired. The purchase price allocations for the other businesses acquired in 2023 have been finalized during their respective measurement periods with an insignificant impact.