SEGMENT INFORMATION - Segment Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023
Segment Reporting Information [Line Items]
Total assets	$ 11,846	$ 10,763
Long-term investments	175	164
Deferred tax assets	412	338
Right-of-use asset	177	154
Other assets	910	708
Long-Lived Assets	2,505	1,851
Other Noncurrent Assets [Member]
Segment Reporting Information [Line Items]
Deferred tax assets	351	284
UNITED STATES
Segment Reporting Information [Line Items]
Long-Lived Assets	1,453	1,188
GERMANY
Segment Reporting Information [Line Items]
Long-Lived Assets	244	192
Rest Of World
Segment Reporting Information [Line Items]
Long-Lived Assets	529	469
CANADA
Segment Reporting Information [Line Items]
Long-Lived Assets	279	2
Operating Segments
Segment Reporting Information [Line Items]
Capital Expenditures	378	298
Total assets	9,098	8,024
Operating Segments | Life Sciences and Applied Markets
Segment Reporting Information [Line Items]
Capital Expenditures	60	64
Total assets	3,139	3,161
Operating Segments | Diagnostics and Genomics
Segment Reporting Information [Line Items]
Capital Expenditures	299	212
Total assets	5,044	3,966
Operating Segments | Agilent CrossLab
Segment Reporting Information [Line Items]
Capital Expenditures	19	22
Total assets	915	897
Segment Reporting, Reconciling Item, Corporate Nonsegment
Segment Reporting Information [Line Items]
Cash and Cash Equivalents	1,329	1,590
Prepaid Expense, Current	188	139
Long-term investments	175	164
Long term and other receivables	143	127
Deferred tax assets	351	284
Right-of-use asset	177	154
Other assets	$ 385	$ 281