Acquisitions Of Businesses	6 Months Ended
Acquisitions Of Businesses	Jun. 30, 2023
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 half of 2023, we acquired five companies, each for an immaterial amount. Two companies have been included within our Unites States mechanical construction and facilities services segment, one of which provides mechanical and pipe fabrication services, and one of which provides fire protection services, both in the Midwestern region of the United States. The other three companies have been included within our United States building services segment and provide mechanical services in the Western and Midwestern regions of the United States. The results of operations for all such companies were de minimis. During calendar year 2022, we acquired six companies for total consideration of $100.8 million. Such acquisitions include: (a) a company that provides electrical construction services in the Greater Boston area, the results of operations of which have been included in our United States electrical construction and facilities services segment, and (b) five companies that enhance our presence in geographies where we have existing operations, the results of operations of which were de minimis, consisting of: (i) two companies that provide fire protection services in the Northeastern and Southern regions of the NOTE 4 - Acquisitions of Businesses (Continued) United States, respectively, and that have been included within our United States mechanical construction and facilities services segment, (ii) two companies that specialize in either building automation and controls or mechanical services in the Southwestern and Southern regions of the United States, respectively, and that have been included within our United States building services segment, and (iii) a company that provides electrical construction services in the Midwestern region of the United States and that has been included within our United States electrical construction and facilities services segment. In connection with these acquisitions, we acquired working capital of $7.1 million and other net liabilities of $1.1 million, and have ascribed $28.9 million to goodwill and $65.9 million to identifiable intangible assets. We expect that all of the goodwill acquired in connection with these acquisitions will be deductible for tax purposes. The purchase price allocations for the businesses acquired in 2023 are preliminary and subject to change during their respective measurement periods. As we finalize such purchase price allocations, 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 businesses acquired in 2022 have been finalized during their respective measurement periods with an insignificant impact. On June 30, 2023, we entered into a definitive agreement to acquire ECM Holding Group, Inc. (“ECM”) in an all-cash transaction. ECM is a leading national energy specialty services firm, with estimated 2023 revenues of approximately $60 million. The transaction is expected to close in the third quarter of 2023, subject to customary closing conditions. Upon closing, its results will be included within our United States building services segment.