BASIS OF PRESENTATION	3 Months Ended
BASIS OF PRESENTATION	Apr. 03, 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. 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 (“Heat Transfer“) business, 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. 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 is eligible for additional cash consideration of up to $45.0, with payments scheduled to be made in 2021 and 2022 upon successful achievement of certain operational and financial performance milestones. The estimated fair value of such contingent consideration is $24.3, which is reflected as a liability in our condensed consolidated balance sheets as of April 3, 2021 and December 31, 2020. The post-acquisition operating results of ULC are reflected in 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 $15.2, 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 $4.0, with payment scheduled to be made in 2021 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 the accompanying condensed consolidated balance sheets as of April 3, 2021 and December 31, 2020. The post-acquisition operating results of Sensors & Software are reflected within our Detection and Measurement reportable segment. The assets acquired and liabilities assumed in the ULC and Sensors & Software 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. Impact of the Coronavirus Disease (the “COVID-19 pandemic”) We experienced adverse impacts of the COVID-19 pandemic during the first half of 2020 with a diminishing impact in the second half of 2020 and into the first quarter of 2021. Despite the adverse impacts, there are no indications that the COVID-19 pandemic has resulted in a material decline in the carrying value of any assets, or a material change in the estimate of any contingent amounts, recorded in our condensed consolidated balance sheet as of April 3, 2021. However, there is uncertainty as to the duration and overall impact of the COVID-19 pandemic, which could result in an adverse material change in a future period to the estimates we have made for the valuation of assets and contingent 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. Unless otherwise indicated, amounts provided in these Notes pertain to continuing operations only. See Note 3 for information on discontinued operations. 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 three months ended April 3, 2021, when compared to the consolidated operating results for the 2020 respective period. Reclassification of Prior Year Amounts Certain prior year amounts have been reclassified to conform to the current year presentation, with the amounts related to the inclusion of Heat Transfer within discontinued operations.