SEGMENT INFORMATION - Profitability (Details) $ in Millions	3 Months Ended
	Jan. 31, 2017 USD ($)	Jan. 31, 2016 USD ($)
Segment Reporting Information
Number of operating segments	3
Segment Reporting Information
Total net revenue	$ 1,067	$ 1,028
Income from operations	206	155
Life Sciences and Applied Markets
Segment Reporting Information
Total net revenue	540	526
Income from operations	126	114
Diagnostics and Genomics
Segment Reporting Information
Total net revenue	164	158
Income from operations	23	15
Agilent CrossLab
Segment Reporting Information
Total net revenue	363	344
Income from operations	74	76
Segment Total
Segment Reporting Information
Total net revenue	1,067	1,028
Income from operations	$ 223	$ 205