XML 12 R1.htm IDEA: XBRL DOCUMENT v3.19.1
Document and Entity Information - shares
 6 Months Ended
Apr. 30, 2019
May 23, 2019
Document and Entity Information [Abstract]    
Entity Registrant Name AGILENT TECHNOLOGIES INC.  
Entity Central Index Key 0001090872  
Current Fiscal Year End Date --10-31  
Entity Current Reporting Status Yes  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   315,993,352
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q2  
Document Type 10-Q  
Amendment Flag false  
Entity Small Business false  
Entity Emerging Growth Company false  
Document Period End Date Apr. 30, 2019