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Goodwill and Intangible Assets (Tables)
 12 Months Ended
Oct. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of allocation and changes in the carrying amount of goodwill
Goodwill and related changes in the carrying amount by reportable segment were as follows:
 
Enterprise
Group
 
Enterprise
Services(1)
 
Software
 
Financial
Services
 
Total
 
In millions
Balance at October 31, 2014(2)
$
16,867

 
$
97

 
$
8,852

 
$
144

 
$
25,960

Goodwill acquired during the period
1,891

 
—

 
96

 
—

 
1,987

Goodwill divested during the period(3)
—

 
—

 
(123
)
 
—

 
(123
)
Changes due to foreign currency
(52
)
 
(5
)
 
—

 
—

 
(57
)
Goodwill adjustments(4)
6

 
—

 
(512
)
 
—

 
(506
)
Balance at October 31, 2015(2)
18,712


92


8,313


144


27,261

Goodwill acquired during the period
2

 
—

 
10

 
—

 
12

Goodwill divested during the period(5)
(3,000
)
 
(90
)
 
(234
)
 
—

 
(3,324
)
Changes due to foreign currency
(29
)
 
(2
)
 
—

 
—

 
(31
)
Goodwill adjustments(6)
260

 
—

 
—

 
—

 
260

Balance at October 31, 2016(2)
$
15,945


$
—


$
8,089


$
144


$
24,178

_______________________________________________________________________________
(1) Goodwill related to the MphasiS Limited reporting unit, which was sold in the fourth quarter of 2016.
(2) Goodwill is net of accumulated impairment losses of $13.7 billion, which were recorded prior to October 31, 2014. Of that amount, $8.0 billion relates to the Enterprise Services segment and the remaining $5.7 billion relates to the Software segment.
(3) Goodwill divested as part of the divestiture of the LiveVault and iManage businesses.
(4) In connection with the Separation, former Parent retained the marketing optimization software product group, a continuing business which had historically been managed by the Company and included in the Software segment. The adjustment reflects the impact of removing the related goodwill of $512 million, allocated on a relative fair value basis, from former Parent.
(5) Goodwill divested as part of the H3C transaction (EG), sale of TippingPoint (Software) and sale of MphasiS (ES).
(6) Primarily measurement period adjustments to provisional tax items recorded in conjunction with the Aruba acquisition.
Intangible Assets
Intangible assets are comprised of:
 
As of October 31, 2016
 
As of October 31, 2015
 
Gross
 
Accumulated
Amortization
 
Accumulated
Impairment
Loss
 
Net
 
Gross
 
Accumulated
Amortization
 
Accumulated
Impairment
Loss
 
Net
 
In millions
Customer contracts, customer lists and distribution agreements
$
1,394

 
$
(322
)
 
$
(856
)
 
$
216

 
$
5,109

 
$
(3,517
)
 
$
(856
)
 
$
736

Developed and core technology and patents
4,190

 
(1,232
)
 
(2,138
)
 
820

 
4,218

 
(1,110
)
 
(2,138
)
 
970

Trade name and trade marks
178

 
(21
)
 
(109
)
 
48

 
231

 
(57
)
 
(109
)
 
65

In-process research and development
—

 
—

 
—

 
—

 
159

 
—

 
—

 
159

Total intangible assets
$
5,762


$
(1,575
)

$
(3,103
)

$
1,084


$
9,717


$
(4,684
)

$
(3,103
)

$
1,930
Schedule of intangible assets
As of October 31, 2016, the weighted-average remaining useful lives of the Company's finite-lived intangible assets were as follows:
Finite-Lived Intangible Assets
Weighted-Average
Remaining
Useful Lives
 
In years
Customer contracts, customer lists and distribution agreements
5
Developed and core technology and patents
5
Trade name and trade marks
7
Schedule of estimated future amortization expense related to finite-lived purchased intangible assets
As of October 31, 2016, estimated future amortization expense related to finite-lived intangible assets was as follows:
Fiscal year
In millions
2017
$
339

2018
248

2019
202

2020
172

2021
55

Thereafter
68

Total
$
1,084