BASIS OF PRESENTATION	9 Months Ended
BASIS OF PRESENTATION	Oct. 02, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BASIS OF PRESENTATION	BASIS OF PRESENTATION Unless otherwise indicated, “we,” “us” and “our” mean SPX Corporation and its consolidated subsidiaries (“SPX”). We prepared the condensed consolidated financial statements pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) for interim reporting. As permitted under those rules and regulations, certain footnotes or other financial information normally required by accounting principles generally accepted in the United States (“GAAP”) can be condensed or omitted. The financial statements represent our accounts after the elimination of intercompany transactions and, in our opinion, include the adjustments (consisting only of normal and recurring items) necessary for their fair presentation. Unless otherwise indicated, amounts provided in these Notes pertain to continuing operations only (see Note 3 for information on discontinued operations). We account for investments in unconsolidated companies where we exercise significant influence but do not have control using the equity method. In determining whether we are the primary beneficiary of a variable interest entity (“VIE”), we perform a qualitative analysis that considers the design of the VIE, the nature of our involvement and the variable interests held by other parties to determine which party has the power to direct the activities of the VIE that most significantly impact the entity’s economic performance, and which party has the obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE. All of our VIEs are considered immaterial, individually and in aggregate, to our condensed consolidated financial statements. Sale of Transformers Solutions Business On October 1, 2021, we completed the previously announced sale of SPX Transformer Solutions, Inc. (“Transformer Solutions”) pursuant to the terms of the Stock Purchase Agreement dated June 8, 2021 with GE-Prolec Transformers, Inc. (the “Purchaser”) and Prolec GE Internacional, S. de R.L. de C.V. We transferred all of the outstanding common stock of Transformer Solutions to the Purchaser for an aggregate cash purchase price of $645.0 (the “Transaction”). The purchase price is subject to potential adjustment based on Transformer Solutions’ cash, debt and working capital on the date the Transaction was consummated, as well as for specified transaction expenses and other specified items, with the net cash proceeds received totaling $620.6. After the sale of Transformer Solutions, we have only a limited presence in the power generation markets and are now focusing our efforts and investments on the HVAC and detection and measurement markets. Historically, Transformer Solutions’ operations have had a significant impact on our consolidated financial results, with revenues totaling approximately 25% of our total consolidated revenues. As we no longer have a consequential presence in the power generation markets, and given Transformer Solutions' significance to our historical consolidated financial results, we have concluded that the sale of Transformer Solutions represents a strategic shift. Accordingly, we have classified the business as a discontinued operation in the accompanying condensed consolidated financial statements for all periods presented. See Note 3 for additional details. Change in Segment Reporting Structure As noted above, Transformer Solutions is now being reported as a discontinued operation within the accompanying condensed consolidated financial statements. In addition, the remaining operations of our former Engineered Solutions reportable segment, with annual income representing less than 5% of the total annual income of our reportable segments, are being reported within our HVAC reportable segment, as these operations are now being managed, and evaluated by our Chief Operating Decision Maker, as part of our HVAC cooling business. Wind-Down of the SPX Heat Transfer Business As a continuation of our strategic shift away from power-generation markets, during the fourth quarter of 2020, we completed the wind-down of the SPX Heat Transfer business (“Heat Transfer”), which included providing all products and services on the business’s remaining contracts with customers. As a result, we are reporting Heat Transfer as a discontinued operation in the accompanying condensed consolidated financial statements for all periods presented. See Note 3 for additional details. Acquisition of ULC On September 2, 2020, we completed the acquisition of ULC Robotics (“ULC”), a leading developer of robotic systems, machine learning applications, and inspection technology for the energy, utility, and industrial markets, for cash proceeds of $89.2, net of cash acquired of $4.0. Under the terms of the purchase and sales agreement, the seller was eligible for additional cash consideration of up to $45.0, with payments scheduled to be made upon successful achievement of certain operational and financial performance milestones. At the time of the acquisition, we recorded a liability of $24.3, which represented the estimated fair value of the contingent consideration. During the third quarter of 2021, we concluded that the operational and financial milestones noted above would not be achieved. As a result, we reversed the liability of $24.3 during the quarter, with the offset recorded to “Other operating (income) expense” (See Note 9 for further discussion of this matter). The post-acquisition operating results of ULC are reflected within our Detection and Measurement reportable segment. Acquisition of Sensors & Software On November 11, 2020, we completed the acquisition of Sensors & Software Inc. (“Sensors & Software”), a leading manufacturer and distributor of ground penetrating radar products used for locating underground utilities, detecting unexploded ordinances, and geotechnical and geological investigations, for cash proceeds of $15.5, net of cash acquired of $0.3. Under the terms of the purchase and sales agreement, the seller is eligible for additional cash consideration of up to $3.9, with payment scheduled to be made upon successful achievement of a financial performance milestone during the twelve months following the date of acquisition. The estimated fair value of such contingent consideration is $0.7, which is reflected as a liability in our condensed consolidated balance sheets as of October 2, 2021 and December 31, 2020. The post-acquisition operating results of Sensors & Software are reflected within our Detection and Measurement reportable segment. Acquisition of Sealite On April 19, 2021, we completed the acquisition of Sealite Pty Ltd and affiliated entities, including Sealite USA, LLC (doing business as Avlite Systems) and Star2M Pty Ltd (collectively, “Sealite”). Sealite is a leader in the design and manufacture of marine and aviation Aids to Navigation products. We purchased Sealite for cash proceeds of $80.3, net of cash acquired of $2.3. The post-acquisition operating results of Sealite are reflected within our Detection and Measurement Reportable segment. Acquisition of ECS On August 2, 2021, we completed the acquisition of Enterprise Control Systems Ltd (“ECS”), a leader in the design and manufacture of highly-engineered tactical datalinks and radio frequency (“RF”) countermeasures, including counter-drone and counter-IED RF jammers. We purchased ECS for cash proceeds of $39.4, net of cash acquired of $5.1. Under the terms of the purchase and sales agreement, the seller is eligible for additional cash consideration of up to $16.8, with payment to be made in 2022 upon successful achievement of certain financial performance milestones. The estimated fair value of such contingent consideration is $8.2, which is reflected as a liability in our condensed consolidated balance sheet as of October 2, 2021. The post-acquisition operating results of ECS are reflected within our Detection and Measurement reportable segment. The assets acquired and liabilities assumed in the Sensors & Software, Sealite and ECS transactions have been recorded at estimates of fair value as determined by management, based on information available and assumptions as to future operations and are subject to change, primarily for the final assessment and valuation of certain income tax amounts. Other Preparing financial statements requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses. Actual results could differ from these estimates. The unaudited information included in this Quarterly Report on Form 10-Q should be read in conjunction with the consolidated financial statements contained in our Annual Report on Form 10-K for the year ended December 31, 2020. Interim results are not necessarily indicative of full year results. We establish actual interim closing dates using a fiscal calendar, which requires our businesses to close their books on the Saturday closest to the end of the first calendar quarter, with the second and third quarters being 91 days in length. Our fourth quarter ends on December 31. The interim closing dates for the first, second and third quarters of 2021 are April 3, July 3 and October 2, compared to the respective March 28, June 27 and September 26, 2020 dates. We had five more days in the first quarter of 2021 and will have six fewer days in the fourth quarter of 2021 than in the respective 2020 periods. It is not practicable to estimate the impact of the five additional days on our consolidated operating results for the nine months ended October 2, 2021, when compared to the consolidated operating results for the 2020 respective period.