Cover Page - shares
3 Months Ended
Mar. 28, 2020
May 08, 2020
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 28, 2020  
Document Transition Report false  
Entity File Number 1-37393  
Entity Registrant Name SPX FLOW, INC.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 47-3110748  
Entity Address, Address Line One 13320 Ballantyne Corporate Place  
Entity Address, Postal Zip Code 28277  
Entity Address, City or Town Charlotte,  
Entity Address, State or Province NC  
City Area Code 704  
Local Phone Number 752-4400  
Title of 12(b) Security Common Stock, Par Value $0.01  
Trading Symbol FLOW  
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   42,647,548
Entity Central Index Key 0001641991  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus Q1