Document and Entity Information - shares
6 Months Ended
Mar. 31, 2018
May 04, 2018
Document and Entity Information    
Entity Registrant Name Nexeo Solutions, Inc.  
Entity Central Index Key 0001604416  
Current Fiscal Year End Date --09-30  
Entity Filer Category Accelerated Filer  
Document Type 10-Q  
Document Period End Date Mar. 31, 2018  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Entity Common Stock, Shares Outstanding   89,741,309