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SUBSEQUENT EVENTS (Notes)	3 Months Ended
SUBSEQUENT EVENTS (Notes)	Jan. 31, 2020
Subsequent Event [Line Items]
Subsequent Events	SUBSEQUENT EVENT In February 2020, the company reached a settlement agreement with Twist Bioscience Corporation ("Twist") under which Twist has agreed to pay us $22.5 million to settle our intellectual property claim against Twist. The settlement agreement provides a license to Twist for discrete aspects of Agilent’s oligo-synthesis technology and successfully resolves all outstanding litigation between all parties.