v3.26.1
REVENUE- Revenue by Region (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jul. 31, 2026
Jul. 31, 2025
Jul. 31, 2026
Jul. 31, 2025
Disaggregation of Revenue [Line Items]        
Net revenue $ 1,878 $ 1,738 $ 5,511 $ 5,087
Life Sciences and Diagnostics Markets        
Disaggregation of Revenue [Line Items]        
Net revenue 746 670 2,157 1,971
Agilent CrossLab        
Disaggregation of Revenue [Line Items]        
Net revenue 786 744 2,303 2,153
Applied Markets        
Disaggregation of Revenue [Line Items]        
Net revenue 346 324 1,051 963
Americas        
Disaggregation of Revenue [Line Items]        
Net revenue 761 683 2,203 2,030
Americas | Life Sciences and Diagnostics Markets        
Disaggregation of Revenue [Line Items]        
Net revenue 369 316 1,039 953
Americas | Agilent CrossLab        
Disaggregation of Revenue [Line Items]        
Net revenue 289 274 851 805
Americas | Applied Markets        
Disaggregation of Revenue [Line Items]        
Net revenue 103 93 313 272
Europe        
Disaggregation of Revenue [Line Items]        
Net revenue 504 492 1,540 1,397
Europe | Life Sciences and Diagnostics Markets        
Disaggregation of Revenue [Line Items]        
Net revenue 201 201 618 568
Europe | Agilent CrossLab        
Disaggregation of Revenue [Line Items]        
Net revenue 221 212 658 594
Europe | Applied Markets        
Disaggregation of Revenue [Line Items]        
Net revenue 82 79 264 235
Asia Pacific        
Disaggregation of Revenue [Line Items]        
Net revenue 613 563 1,768 1,660
Asia Pacific | Life Sciences and Diagnostics Markets        
Disaggregation of Revenue [Line Items]        
Net revenue 176 153 500 450
Asia Pacific | Agilent CrossLab        
Disaggregation of Revenue [Line Items]        
Net revenue 276 258 794 754
Asia Pacific | Applied Markets        
Disaggregation of Revenue [Line Items]        
Net revenue $ 161 $ 152 $ 474 $ 456