CONTINGENT LIABILITIES AND OTHER MATTERS | CONTINGENT LIABILITIES AND OTHER MATTERS General Numerous claims, complaints and proceedings arising in the ordinary course of business have been asserted or are pending against us or certain of our subsidiaries (collectively, “claims”). These claims relate to litigation matters (e.g., class actions and contracts, intellectual property, and competitive claims), environmental matters, product liability matters (predominately associated with alleged exposure to asbestos-containing materials), and other risk management matters (e.g., general liability, automobile, and workers’ compensation claims). Additionally, we may become subject to other claims of which we are currently unaware, which may be significant, or the claims of which we are aware may result in our incurring significantly greater loss than we anticipate. While we (and our subsidiaries) maintain property, cargo, auto, product, general liability, environmental, and directors’ and officers’ liability insurance and have acquired rights under similar policies in connection with acquisitions that we believe cover a significant portion of these claims, this insurance may be insufficient or unavailable (e.g., in the case of insurer insolvency) to protect us against potential loss exposures. Also, while we believe we are entitled to indemnification from third parties for some of these claims, these rights may be insufficient or unavailable to protect us against potential loss exposures. Our recorded liabilities related to these matters totaled $651.7 (including $604.1 for asbestos product liability matters) and $653.5 (including $605.6 for asbestos product liability matters) at April 1, 2017 and December 31, 2016 , respectively. Of these amounts, $617.6 and $621.0 are included in “Other long-term liabilities” within our condensed consolidated balance sheets at April 1, 2017 and December 31, 2016 , respectively, with the remainder included in “Accrued expenses.” The liabilities we record for these claims are based on a number of assumptions, including historical claims and payment experience and, with respect to asbestos claims, actuarial estimates of the future period during which additional claims are reasonably foreseeable. While we base our assumptions on facts currently known to us, they entail inherently subjective judgments and uncertainties. As a result, our current assumptions for estimating these liabilities may not prove accurate, and we may be required to adjust these liabilities in the future, which could result in charges to earnings. These variances relative to current expectations could have a material impact on our financial position and results of operations. Our asbestos-related claims are typical in certain of the industries in which we operate or pertain to legacy businesses we no longer operate. It is not unusual in these cases for fifty or more corporate entities to be named as defendants. We vigorously defend these claims, many of which are dismissed without payment, and the significant majority of costs related to these claims have historically been paid pursuant to our insurance arrangements. During the three months ended April 1, 2017, our insurance recoveries for asbestos-related matters, net of payments, were $9.0 , which included cash proceeds received during the period of $8.5 related to a settlement reached with an insurance carrier. During the three months ended April 2, 2016 , our payments for asbestos-related matters, net of insurance recoveries, were $1.3 . A significant increase in claims, costs and/or issues with existing insurance coverage (e.g., dispute with or insolvency of insurer(s)) could have a material adverse impact on our share of future payments related to these matters, and, as such, have a material impact on our financial position, results of operations and cash flows. We have recorded insurance recovery assets associated with the asbestos product liability matters, with such amounts totaling $554.0 and $ 564.4 at April 1, 2017 and December 31, 2016 , respectively, and included in “Other assets” within our condensed consolidated balance sheets. These assets represent amounts that we believe we are or will be entitled to recover under agreements we have with insurance companies. The assets we record for these insurance recoveries are based on a number of assumptions, including the continued solvency of the insurers, and are subject to a variety of uncertainties. Our current assumptions for estimating these assets may not prove accurate, and we may be required to adjust these assets in the future, which could result in additional charges to earnings. These variances relative to current expectations could have a material impact on our financial position and results of operations. During the three months ended April 1, 2017 and April 2, 2016 , there were no changes in estimates associated with the liabilities and assets related to our asbestos product liability matters. Large Power Projects in South Africa The business environment surrounding our large power projects in South Africa remains difficult, as we have experienced delays, cost over-runs, and various other challenges associated with a complex set of contractual relationships among the end customer, prime contractors, various subcontractors (including us and our subcontractors), and various suppliers. We currently are involved in a number of claim disputes relating to these challenges. We are pursuing various commercial alternatives for addressing these challenges, in attempt to mitigate our overall financial exposure. We recognize revenue associated with unapproved change orders and claims to the extent the related costs have been incurred and the amount expected of recovery is probable and reasonably estimable. At April 1, 2017 , the projected revenues related to our large power projects in South Africa included approximately $27.5 related to claims and unapproved change orders. We believe these amounts are recoverable under the provisions of the related contracts and reflect our best estimate of recoverable amounts. Although we believe that our current estimates of revenues, costs and profits relating to these projects are reasonable, it is possible that future revisions of such estimates could have a material effect on our condensed consolidated financial statements. Noncontrolling Interest in South African Subsidiary Our South African subsidiary, DBT Technologies (PTY) LTD (“DBT”), has a Black Economic Empowerment shareholder (the “BEE Partner”) that holds a 25.1% noncontrolling interest in DBT. Under the terms of the shareholder agreement between the BEE Partner and SPX Technologies (PTY) LTD (“SPX Technologies”), the BEE Partner had the option to put its ownership interest in DBT to SPX Technologies, the majority shareholder of DBT, at a redemption amount determined in accordance with the terms of the shareholder agreement (the “Put Option”). The BEE Partner notified SPX Technologies of its intention to exercise the Put Option and, on July 6, 2016, an Arbitration Tribunal declared that the BEE Partner was entitled to South African Rand 287.3 in connection with the exercise of the Put Option, having not considered an amount due from the BEE Partner under a promissory note of South African Rand 30.3 held by SPX Technologies. As a result, we have reflected the net redemption amount of South African Rand 257.0 (or $19.7 ) within “Accrued expenses” on our condensed consolidated balance sheet as of April 1, 2017 , with the related offset recorded to “Paid-in capital” and “Accumulated other comprehensive income.” In addition, we reclassified $38.7 from “Noncontrolling Interests” to “Paid-in capital.” Lastly, under the two-class method of calculating earnings per share, we reflected an adjustment of $18.1 to “Net income (loss) attributable to SPX Corporation common shareholders” for the excess redemption amount of the Put Option (i.e., the increase in the redemption amount during the second quarter of 2016 in excess of fair value) in our calculations of basic and diluted earnings per share for the second quarter of 2016. SPX Technologies disagrees with the arbitration determination and will continue to pursue all available legal recourse in this matter. Patent Infringement Lawsuit Our subsidiary, SPX Cooling Technologies, Inc. (“SPXCT”), is a defendant in a legal action brought by Baltimore Aircoil Company (“BAC”) alleging that a SPXCT product infringes United States Patent No. 7,107,782, entitled “Evaporative Heat Exchanger and Method.” BAC filed suit on July 16, 2013 in the United States District Court for the District of Maryland (the “District Court”) seeking monetary damages and injunctive relief. On November 4, 2016, the jury for the trial in the District Court found in favor of SPXCT. The verdict by the District Court is subject to further judicial processes, including a possible appeal by BAC. We believe that we will ultimately be successful in any future judicial processes; however, to the extent we are not successful, the outcome could have a material adverse effect on our financial position, results of operations, and cash flows. Litigation Matters We are subject to other legal matters that arise in the normal course of business. We believe these matters are either without merit or of a kind that should not have a material effect, individually or in the aggregate, on our financial position, results of operations or cash flows; however, we cannot assure you that these proceedings or claims will not have a material effect on our financial position, results of operations or cash flows. Environmental Matters Our operations and properties are subject to federal, state, local and foreign regulatory requirements relating to environmental protection. It is our policy to comply fully with all applicable requirements. As part of our effort to comply, we have a comprehensive environmental compliance program that includes environmental audits conducted by internal and external independent professionals, as well as regular communications with our operating units regarding environmental compliance requirements and anticipated regulations. Based on current information, we believe that our operations are in substantial compliance with applicable environmental laws and regulations, and we are not aware of any violations that could have a material effect, individually or in the aggregate, on our business, financial condition, and results of operations or cash flows. As of April 1, 2017 , we had liabilities for site investigation and/or remediation at 28 sites ( 30 sites at December 31, 2016) that we own or control. In addition, while we believe that we maintain adequate accruals to cover the costs of site investigation and/or remediation, we cannot provide assurance that new matters, developments, laws and regulations, or stricter interpretations of existing laws and regulations will not materially affect our business or operations in the future. Our environmental accruals cover anticipated costs, including investigation, remediation, and operation and maintenance of clean-up sites. Our estimates are based primarily on investigations and remediation plans established by independent consultants, regulatory agencies and potentially responsible third parties. Accordingly, our estimates may change based on future developments, including new or changes in existing environmental laws or policies, differences in costs required to complete anticipated actions from estimates provided, future findings of investigation or remediation actions, or alteration to the expected remediation plans. It is our policy to revise an estimate once the revision becomes probable and the amount of change can be reasonably estimated. We generally do not discount our environmental accruals and do not reduce them by anticipated insurance recoveries. We take into account third-party indemnification from financially viable parties in determining our accruals where there is no dispute regarding the right to indemnification. In the case of contamination at offsite, third-party disposal sites, as of April 1, 2017 , we have been notified that we are potentially responsible and have received other notices of potential liability pursuant to various environmental laws at 22 sites at which the liability has not been settled, of which 8 sites have been active in the past few years. These laws may impose liability on certain persons that are considered jointly and severally liable for the costs of investigation and remediation of hazardous substances present at these sites, regardless of fault or legality of the original disposal. These persons include the present or former owners or operators of the site and companies that generated, disposed of or arranged for the disposal of hazardous substances at the site. We are considered a “de minimis” potentially responsible party at most of the sites, and we estimate that our aggregate liability, if any, related to these sites is not material to our condensed consolidated financial statements. We conduct extensive environmental due diligence with respect to potential acquisitions, including environmental site assessments and such further testing as we may deem warranted. If an environmental matter is identified, we estimate the cost and either establish a liability, purchase insurance or obtain an indemnity from a financially sound seller; however, in connection with our acquisitions or dispositions, we may assume or retain significant environmental liabilities, some of which we may be unaware. The potential costs related to these environmental matters and the possible impact on future operations are uncertain due in part to the complexity of government laws and regulations and their interpretations, the varying costs and effectiveness of various clean-up technologies, the uncertain level of insurance or other types of recovery, and the questionable level of our responsibility. We record a liability when it is both probable and the amount can be reasonably estimated. In our opinion, after considering accruals established for such purposes, the cost of remedial actions for compliance with the present laws and regulations governing the protection of the environment are not expected to have a material impact, individually or in the aggregate, on our financial position, results of operations or cash flows. Self-insured Risk Management Matters We are self-insured for certain of our workers’ compensation, automobile, product and general liability, disability and health costs, and we believe that we maintain adequate accruals to cover our retained liability. Our accruals for risk management matters are determined by us, are based on claims filed and estimates of claims incurred but not yet reported, and generally are not discounted. We consider a number of factors, including third-party actuarial valuations, when making these determinations. We maintain third-party stop-loss insurance policies to cover certain liability costs in excess of predetermined retained amounts. The insurance may be insufficient or unavailable (e.g., because of insurer insolvency) to protect us against loss exposure. |