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STOCKHOLDERS' EQUITY (Tables)
 12 Months Ended
Oct. 31, 2020
Statement of Comprehensive Income [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss)
The following table summarizes the components of accumulated other comprehensive loss, net of tax effect:
 
October 31,
 
2020
 
2019
 
(in millions)
Foreign currency translation, net of tax (expense) of $(63) and $(63)
$
(10
)
 
$
(43
)
Unrealized losses on defined benefit plans, net of tax benefit of $139 and $113
(605
)
 
(532
)
Unrealized gains (losses) on derivative instruments, net of tax (expense) of $(5) and zero
16

 
(3
)
Total accumulated other comprehensive loss
$
(599
)
 
$
(578
)

Changes in accumulated other comprehensive loss by component and related tax effects were as follows:
 
 
 
Net defined benefit pension cost and post retirement plan costs:
 
 
 
 
 
Foreign currency translation
 
Actuarial Losses
 
Prior service credits
 
Unrealized gains (losses) on derivatives
 
Total
 
(in millions)
At October 31, 2018
$
(60
)
 
$
(445
)
 
$
19

 
$
(2
)
 
$
(488
)
Other comprehensive income (loss) before reclassifications
17

 
(168
)
 
—

 
(5
)
 
(156
)
Amounts reclassified out of accumulated other comprehensive gain (loss)
—

 
49

 
(19
)
 
3

 
33

Tax benefit (expense)
—

 
28

 
4

 
1

 
33

Other comprehensive income (loss)
17

 
(91
)
 
(15
)
 
(1
)
 
(90
)
At October 31, 2019
(43
)
 
(536
)
 
4

 
(3
)
 
(578
)
Other comprehensive income (loss) before reclassifications
33

 
(155
)
 
—

 
20

 
(102
)
Amounts reclassified out of accumulated other comprehensive gain (loss)
—

 
68

 
(12
)
 
4

 
60

Tax benefit (expense)
—

 
23

 
3

 
(5
)
 
21

Other comprehensive income (loss)
33

 
(64
)
 
(9
)
 
19

 
(21
)
At October 31, 2020
$
(10
)
 
$
(600
)
 
$
(5
)
 
$
16

 
$
(599
)
Reclassification out of Accumulated Other Comprehensive Income
Reclassifications out of accumulated other comprehensive loss were as follows:
Details about accumulated other comprehensive loss components
 
Amounts reclassified from other comprehensive loss
 
Affected line item in statement of operations
 
 
Year Ended October 31,
 
 
 
 
2020
 
2019
 
 
 
 
(in millions)
 
 
Unrealized gain (loss) on derivatives
 
$
(3
)
 
$
(1
)
 
Cost of products
 
 
(1
)
 
(2
)
 
Selling, general and administrative
 
 
1

 
—

 
Benefit (provision) for income tax
 
 
(3
)
 
(3
)
 
Net of Income Tax
 
 
 
 
 
 
 
Net defined benefit pension cost and post retirement plan costs:
 
 
 
 
 
 
Net actuarial losses
 
(68
)
 
(49
)
 
 
Prior service credits
 
12

 
19

 
 
 
 
(56
)
 
(30
)
 
Total before income tax
 
 
10

 
7

 
Benefit (provision) for income tax
 
 
(46
)
 
(23
)
 
Net of income tax
 
 
 
 
 
 
 
Total reclassifications for the period
 
$
(49
)
 
$
(26
)