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GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)
12 Months Ended
Oct. 31, 2021
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, 2020 and 2021:
Life Sciences and Applied MarketsDiagnostics and GenomicsAgilent CrossLabTotal
 (in millions)
Goodwill as of October 31, 2019$1,438 $1,594 $561 $3,593 
Foreign currency translation impact
Goodwill as of October 31, 2020$1,441 $1,599 $562 $3,602 
Foreign currency translation impact— 
Goodwill arising from acquisitions and adjustments— 365 — 365 
Goodwill as of October 31, 2021$1,446 $1,964 $565 $3,975 
Schedule of Acquired Finite-Lived Intangible Assets by Major Class
The component parts of other intangible assets at October 31, 2020 and 2021 are shown in the table below:
 Other Intangible Assets
 Gross
Carrying
Amount
Accumulated
Amortization
Net Book
Value
 (in millions)
As of October 31, 2020:   
Purchased technology$1,429 $863 $566 
Trademark/Tradename196 117 79 
Customer relationships330 158 172 
Third-party technology and licenses11 
Total amortizable intangible assets$1,966 $1,145 $821 
In-Process R&D10 — 10 
Total$1,976 $1,145 $831 
As of October 31, 2021:   
Purchased technology$1,742 $972 $770 
Backlog
Trademark/Tradename196 133 63 
Customer relationships357 228 129 
Third-party technology and licenses11 
Total amortizable intangible assets$2,314 $1,344 $970 
In-Process R&D11 — 11 
Total$2,325 $1,344 $981 
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)
2022$191 
2023$143 
2024$121 
2025$96 
2026$66 
Thereafter$353