v3.19.2
Cover Page - shares
6 Months Ended
Jun. 29, 2019
Jul. 26, 2019
Cover page.    
Entity Central Index Key 0000088205  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q2  
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 29, 2019  
Document Transition Report false  
Entity File Number 1-6948  
Entity Registrant Name SPX CORP  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 38-1016240  
Entity Address, Address Line One 13320-A Ballantyne Corporate Place  
Entity Address, City or Town Charlotte  
Entity Address, State or Province NC  
Entity Address, Postal Zip Code 28277  
City Area Code 980  
Local Phone Number 474-3700  
Title of 12(b) Security Common Stock, par value $0.01  
Trading Symbol SPXC  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   44,033,914