v3.26.1
REVENUE- Revenue by Region (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Apr. 30, 2026
Apr. 30, 2025
Disaggregation of Revenue [Line Items]        
Net revenue $ 1,835 $ 1,668 $ 3,633 $ 3,349
Life Sciences and Diagnostics Markets        
Disaggregation of Revenue [Line Items]        
Net revenue 732 654 1,411 1,301
Agilent CrossLab        
Disaggregation of Revenue [Line Items]        
Net revenue 759 713 1,517 1,409
Applied Markets        
Disaggregation of Revenue [Line Items]        
Net revenue 344 301 705 639
Americas        
Disaggregation of Revenue [Line Items]        
Net revenue 764 678 1,442 1,347
Americas | Life Sciences and Diagnostics Markets        
Disaggregation of Revenue [Line Items]        
Net revenue 363 325 670 637
Americas | Agilent CrossLab        
Disaggregation of Revenue [Line Items]        
Net revenue 289 270 562 531
Americas | Applied Markets        
Disaggregation of Revenue [Line Items]        
Net revenue 112 83 210 179
Europe        
Disaggregation of Revenue [Line Items]        
Net revenue 518 442 1,036 905
Europe | Life Sciences and Diagnostics Markets        
Disaggregation of Revenue [Line Items]        
Net revenue 214 177 417 367
Europe | Agilent CrossLab        
Disaggregation of Revenue [Line Items]        
Net revenue 222 194 437 382
Europe | Applied Markets        
Disaggregation of Revenue [Line Items]        
Net revenue 82 71 182 156
Asia Pacific        
Disaggregation of Revenue [Line Items]        
Net revenue 553 548 1,155 1,097
Asia Pacific | Life Sciences and Diagnostics Markets        
Disaggregation of Revenue [Line Items]        
Net revenue 155 152 324 297
Asia Pacific | Agilent CrossLab        
Disaggregation of Revenue [Line Items]        
Net revenue 248 249 518 496
Asia Pacific | Applied Markets        
Disaggregation of Revenue [Line Items]        
Net revenue $ 150 $ 147 $ 313 $ 304