OVERVIEW AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Millions			12 Months Ended
	Nov. 01, 2024	Sep. 20, 2024	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Gain (Loss) on Disposition of Assets
Proceeds from Divestiture of Businesses			$ 0	$ 0	$ 50
Net gain on Divestiture of Business			0	0	43
Advertising Expense
Advertising costs expensed as incurred			50	49	54
Cash and Cash Equivalents
Short-term Investments			0	0
Cash and cash equivalents			1,789	1,329	1,590
Restricted Cash			2	3	3
Cash, cash equivalents and restricted cash			1,791	1,332	1,593	$ 1,056
Goodwill and Intangible Assets
Goodwill impairment	$ 0		0	0	0
Impairment of indefinite-lived intangible assets			0	6	0
In-Process R&D			0	0
Long -Lived Assets
Impairment of Long-Lived Assets			15	19	277
Variable Interest Entity
Assets			12,727	11,846
Investments
Equity Method Investments			0	0
Employee Compensation and Benefits
Employee compensation and benefits accrued			129	116
Share-based Payment Arrangement, Noncash Expense [Abstract]
Share-based compensation expense			129	130	112
Foreign Currency Translation
Foreign currency translation net gain (Ioss)			(3)	4	2
Senior Notes
Fair Value Disclosures
Senior Notes Carrying Value			$ 3,330	$ 3,326
Accounts Receivable
Accounts Receivable
Percent of Accounts receivable from a single customer			No single customer accounted for more than 10 percent of accounts receivable	No single customer accounted for more than 10 percent of accounts receivable
Quoted Prices in Active Markets for Identical Assets (Level 1) | Senior Notes
Fair Value Disclosures
Senior Notes Fair Value			$ 3,191	$ 3,083
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity
Assets			44	$ 79
Non-US
Cash and Cash Equivalents
Cash and cash equivalents			$ 1,656
Resolution Bioscience, Inc.
Gain (Loss) on Disposition of Assets
Proceeds from Divestiture of Businesses					50
Net gain on Divestiture of Business					43
Long -Lived Assets
Long lived assets held for sale Impairment					270
BIOVECTRA
Business Combination [Line Items]
Purchase price for acquisition		$ 915
Minimum
Goodwill and Intangible Assets
Finite Lived Intangible Assets Useful Life			2 years
Minimum | Machinery and Equipment
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment, Useful Life			3 years
Minimum | Software Development
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment, Useful Life			3 years
Maximum
Goodwill and Intangible Assets
Finite Lived Intangible Assets Useful Life			13 years
Maximum | Machinery and Equipment
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment, Useful Life			10 years
Maximum | Software Development
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment, Useful Life			5 years
Life Sciences and Diagnostics Markets | Resolution Bioscience, Inc.
Gain (Loss) on Disposition of Assets
Goodwill adjustment related to divestiture of business					$ (13)