GOODWILL AND OTHER INTANGIBLE ASSETS (Notes)

3 Months Ended

Jan. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

The following table presents goodwill balances and the movements for each of our reportable segments during the three months ended January 31, 2020:



	Life Sciences and Applied Markets		Diagnostics and Genomics			Agilent CrossLab			Total
	(in millions)
Goodwill as of October 31, 2019	$	1,438	$	1,594		$	561		$	3,593
Foreign currency translation impact	—		(2		)	(2		)	(4		)
Goodwill as of January 31, 2020	$	1,438	$	1,592		$	559		$	3,589

The components of other intangible assets as of January 31, 2020 and October 31, 2019 are shown in the table below:



	Purchased Other Intangible Assets
	Gross Carrying Amount		Accumulated Amortization and Impairments		Net Book Value
	(in millions)
As of October 31, 2019
Purchased technology	$	1,413	$	763	$	650
Backlog	5		5		—
Trademark/Tradename	196		102		94
Customer relationships	329		87		242
Third-party technology and licenses	28		22		6
Total amortizable intangible assets	1,971		979		992
In-Process R&D	115		—		115
Total	$	2,086	$	979	$	1,107
As of January 31, 2020
Purchased technology	$	1,412	$	787	$	625
Backlog	5		5		—
Trademark/Tradename	196		106		90
Customer relationships	329		105		224
Third-party technology and licenses	28		23		5
Total amortizable intangible assets	1,970		1,026		944
In-Process R&D	115		—		115
Total	$	2,085	$	1,026	$	1,059

During the three months ended January 31, 2020, there were no additions to goodwill and there were no additions to other intangible assets. During the three months ended January 31, 2020, the impact of foreign currency translation on other intangible assets was not material.

In general, for United States federal tax purposes, goodwill from asset purchases is deductible, however any goodwill created as part of a stock acquisition is not deductible.

Each quarter we review the events and circumstances to determine if impairment of indefinite-lived intangible assets and goodwill is indicated. There were no indicators of impairments of indefinite-lived intangible assets or goodwill during the three months ended January 31, 2020 and 2019, respectively.

Amortization expense of intangible assets was $48 million and $29 million for the three months ended January 31, 2020 and 2019, respectively.

Future amortization expense related to existing finite-lived purchased intangible assets for the remainder of fiscal year 2020 and for each of the five succeeding fiscal years and thereafter is estimated below:



Estimated future amortization expense:
(in millions)
Remainder of 2020	$	138
2021	$	172
2022	$	150
2023	$	107
2024	$	86
2025	$	68
Thereafter	$	223