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GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)
 12 Months Ended
Oct. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill balances and movements for each reportable segments during the period
The following table presents goodwill balances and the movements for each of our reportable segments during the years ended October 31, 2024 and 2025:
Life Sciences and Diagnostics MarketsAgilent CrosslabApplied MarketsTotal
 (in millions)
Goodwill as of October 31, 2023$2,489 $1,166 $305 $3,960 
Foreign currency translation impact(15)2 4 (9)
Goodwill arising from acquisitions and adjustments526 — — 526 
Goodwill as of October 31, 2024$3,000 $1,168 $309 $4,477 
Foreign currency translation impact1 — — 1 
Goodwill arising from acquisitions and adjustments(5)— — (5)
Goodwill as of October 31, 2025$2,996 $1,168 $309 $4,473 
Schedule of Acquired Finite-Lived Intangible Assets by Major Class
The component parts of other intangible assets at October 31, 2024 and 2025 are shown in the table below:
 Other Intangible Assets
 Gross
Carrying
Amount		Accumulated
Amortization		Net Book
Value
 (in millions)
As of October 31, 2024:   
Purchased technology$1,484 $1,169 $315 
Backlog9 — 9 
Trademark/Trade name199 174 25 
Customer relationships291 107 184 
Third-party technology and licenses33 19 14 
Total amortizable intangible assets$2,016 $1,469 $547 
As of October 31, 2025:   
Purchased technology$1,484 $1,235 $249 
Backlog9 2 7 
Trademark/Trade name199 181 18 
Customer relationships289 129 160 
Third-party technology and licenses34 23 11 
Total amortizable intangible assets$2,015 $1,570 $445 
Future Amortization expense for the next five years and thereafter
Future amortization expense related to existing finite-lived purchased intangible assets associated with business combinations for the next five fiscal years and thereafter is estimated below:
Estimated future amortization expense:
(in millions)
2026$75 
2027$72 
2028$65 
2029$61 
2030$52 
Thereafter$120