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STOCKHOLDERS' EQUITY (Tables)
 9 Months Ended
Jul. 31, 2016
Jul. 31, 2015
Statement of Comprehensive Income [Abstract]    
Schedule of Accumulated Other Comprehensive Income (Loss)
Changes in accumulated other comprehensive loss by component and related tax effects for the three and nine months ended July 31, 2016 and 2015 were as follows:
 
 
 
 
 
 
Net defined benefit pension cost and post retirement plan costs
 
 
 
 
 
 
Unrealized gain on investments
 
Foreign currency translation
 
Actuarial losses
 
Prior service costs
 
Unrealized gains (losses) on derivatives
 
Total
 
 
(in millions)
As of April 30, 2016
 
$
14

 
$
(17
)
 
$
(489
)
 
$
57

 
$
(2
)
 
$
(437
)
Other comprehensive income (loss) before reclassifications
 
1

 
(1
)
 
—

 
—

 
(5
)
 
(5
)
Amounts reclassified out of accumulated other comprehensive loss
 
—

 
—

 
14

 
(6
)
 
2

 
10

Tax (expense) benefit
 
1

 
—

 
(5
)
 
2

 
1

 
(1
)
Other comprehensive income (loss)
 
2

 
(1
)
 
9

 
(4
)
 
(2
)
 
4

As of July 31, 2016
 
$
16

 
$
(18
)
 
$
(480
)
 
$
53

 
$
(4
)
 
$
(433
)
 
 
 
 
 
 
 
 
 
 
 
 
 
As of October 31, 2015
 
$
21

 
$
(48
)
 
$
(511
)
 
$
65

 
$
(6
)
 
$
(479
)
Other comprehensive income (loss) before reclassifications
 
(7
)
 
30

 
4

 
—

 
(6
)
 
21

Amounts reclassified out of accumulated other comprehensive loss
 
—

 
—

 
42

 
(19
)
 
9

 
32

Tax (expense) benefit
 
2

 
—

 
(15
)
 
7

 
(1
)
 
(7
)
Other comprehensive income (loss)
 
(5
)
 
30

 
31

 
(12
)
 
2

 
46

As of July 31, 2016
 
$
16

 
$
(18
)
 
$
(480
)
 
$
53

 
$
(4
)
 
$
(433
)
 
 
 
 
 
 
Net defined benefit pension cost and post retirement plan costs
 
 
 
 
 
 
Unrealized gain on investments
 
Foreign currency translation
 
Actuarial losses
 
Prior service costs
 
Unrealized gains (losses) on derivatives
 
Total
 
 
(in millions)
As of April 30, 2015
 
$
24

 
$
(28
)
 
$
(428
)
 
$
75

 
$
—

 
$
(357
)
Other comprehensive income (loss) before reclassifications
 
(5
)
 
(12
)
 
—

 
—

 
(3
)
 
(20
)
Amounts reclassified out of accumulated other comprehensive loss
 
—

 
—

 
11

 
(8
)
 
—

 
3

Tax (expense) benefit
 
(2
)
 
—

 
(4
)
 
3

 
1

 
(2
)
Other comprehensive income (loss)
 
(7
)
 
(12
)
 
7

 
(5
)
 
(2
)
 
(19
)
As of July 31, 2015
 
$
17

 
$
(40
)
 
$
(421
)
 
$
70

 
$
(2
)
 
$
(376
)
 
 
 
 
 
 
 
 
 
 
 
 
 
As of October 31, 2014
 
$
16

 
$
6

 
$
(444
)
 
$
83

 
$
3

 
$
(336
)
Other comprehensive income (loss) before reclassifications
 
4

 
(46
)
 
—

 
—

 
(5
)
 
(47
)
Amounts reclassified out of accumulated other comprehensive loss
 
—

 
—

 
33

 
(22
)
 
(2
)
 
9

Tax (expense) benefit
 
(3
)
 
—

 
(10
)
 
9

 
2

 
(2
)
Other comprehensive income (loss)
 
1

 
(46
)
 
23

 
(13
)
 
(5
)
 
(40
)
As of July 31, 2015
 
$
17

 
$
(40
)
 
$
(421
)
 
$
70

 
$
(2
)
 
$
(376
)
Reclassification out of Accumulated Other Comprehensive Income
Reclassifications out of accumulated other comprehensive loss for the three and nine months ended July 31, 2016 and 2015 were as follows:

Details about Accumulated Other Comprehensive Loss Components
 
Amounts Reclassified from Accumulated Other Comprehensive Loss
 
Affected Line Item in Statement of Operations
 
 
Three Months Ended
 
Nine Months Ended
 
 
 
 
July 31,
 
July 31,
 
 
 
 
2016
 
2015
 
2016
 
2015
 
 
 
 
(in millions)
 
 
Unrealized gain (loss) on derivatives
 
$
(2
)
 
$
—

 
$
(9
)
 
$
2

 
Cost of sales
 
 
1

 
—

 
3

 
—

 
Provision for income taxes
 
 
(1
)
 
—

 
(6
)
 
2

 
Net of income tax
 
 
 
 
 
 
 
 
 
 
 
Net defined benefit pension cost and post retirement plan costs:
 
 
 
 
 
 
 
 
 
 
  Actuarial net loss
 
(14
)
 
(11
)
 
(42
)
 
(33
)
 
 
  Prior service benefit
 
6

 
8

 
19

 
22

 
 
 
 
(8
)
 
(3
)
 
(23
)
 
(11
)
 
Total before income tax
 
 
3

 
1

 
8

 
1

 
Provision for income taxes
 
 
(5
)
 
(2
)
 
(15
)
 
(10
)
 
Net of income tax
 
 
 
 
 
 
 
 
 
 
 
Total reclassifications for the period
 
$
(6
)
 
$
(2
)
 
$
(21
)
 
$
(8
)