GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)
 12 Months Ended
Oct. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill balances and movements for each reportable segments during the period
The goodwill balances at October 31, 2017, 2016 and 2015 and the movements in 2017 and 2016 for each of our reportable segments are shown in the table below:
 
Life Sciences and Applied Markets
 
Diagnostics and Genomics
 
Agilent CrossLab
 
Total
 
(in millions)
Goodwill as of October 31, 2015
$
650

 
$
1,234

 
$
482

 
$
2,366

Foreign currency translation impact
3

 
(11
)
 
3

 
(5
)
Goodwill arising from acquisitions
137

 
—

 
19

 
156

Goodwill as of October 31, 2016
$
790

 
$
1,223

 
$
504

 
$
2,517

Foreign currency translation impact
2

 
10

 
—

 
12

Goodwill arising from acquisitions
26

 
52

 
—

 
78

Goodwill as of October 31, 2017
$
818

 
$
1,285

 
$
504

 
$
2,607

 
 
 
 
 
 
 
 
Components of other intangibles during the period
The component parts of other intangible assets at October 31, 2017 and 2016 are shown in the table below:
 
Other Intangible Assets (1)
 
Gross
Carrying
Amount
 
Accumulated
Amortization
and Impairments
 
Net Book
Value
 
(in millions)
As of October 31, 2016:
 
 
 
 
 
Purchased technology
$
823

 
$
572

 
$
251

Backlog
1

 
1

 
—

Trademark/Tradename
149

 
61

 
88

Customer relationships
263

 
211

 
52

Total amortizable intangible assets
$
1,236

 
$
845

 
$
391

In-Process R&D
17

 
—

 
17

Total
$
1,253

 
$
845

 
$
408

As of October 31, 2017:
 
 
 
 
 
Purchased technology
$
855

 
$
646

 
$
209

Trademark/Tradename
149

 
73

 
76

Customer relationships
151

 
112

 
39

Total amortizable intangible assets
$
1,155

 
$
831

 
$
324

In-Process R&D
24

 
—

 
24

Total
$
1,179

 
$
831

 
$
348

 
 
 
 
 
 
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)
2018
$
94

2019
$
69

2020
$
57

2021
$
43

2022
$
32

Thereafter
$
42