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Stockholders' Deficit (Tables)

6 Months Ended

Apr. 30, 2021

Stockholders' Equity Note [Abstract]

Schedule of Tax Effects Related to Other Comprehensive (Loss) Income

Tax effects related to Other Comprehensive Income (Loss)

			Three months ended April 30												Six months ended April 30
			2021						2020						2021						2020
			In millions
Tax effect on change in unrealized components of available-for-sale debt securities:
Tax provision on unrealized gains arising during the period			$	—					$	—					$	(1)					$	—
Tax effect on change in unrealized components of cash flow hedges:
Tax (provision) benefit on unrealized gains (losses) arising during the period			(7)						(33)						40						(49)
Tax (benefit) provision on losses (gains) reclassified into earnings			(17)						16						(21)						26
			(24)						(17)						19						(23)
Tax effect on change in unrealized components of defined benefit plans:
Tax provision on gains arising during the period			(11)						—						(11)						—
Tax benefit on amortization of actuarial loss and prior service benefit			(5)						(5)						(10)						(10)
			(16)						(5)						(21)						(10)
Tax effect on change in cumulative translation adjustment			(1)						—						(6)						—
Tax provision on other comprehensive income			$	(41)					$	(22)					$	(9)					$	(33)

Schedule of Changes and Reclassifications Related to Other Comprehensive Income, Net of Taxes

Changes and reclassifications related to Other Comprehensive Income (Loss), net of taxes

			Three months ended April 30												Six months ended April 30
			2021						2020						2021						2020
			In millions
Other comprehensive income (loss), net of taxes:
Change in unrealized components of available-for-sale debt securities:
Unrealized (losses) gains arising during the period			$	—					$	(2)					$	3					$	(1)
Change in unrealized components of cash flow hedges:
Unrealized (losses) gains arising during the period			(28)						198						(347)						242
Losses (gains) reclassified into earnings			132						(37)						177						(86)
			104						161						(170)						156
Change in unrealized components of defined benefit plans:
Gains (losses) arising during the period			31						(1)						30						(1)
Amortization of actuarial loss and prior service benefit(1)			16						16						32						31
Curtailments, settlements and other			—						1						1						1
			47						16						63						31
Change in cumulative translation adjustment			2						(17)						27						(11)
Other comprehensive income (loss), net of taxes			$	153					$	158					$	(77)					$	175

(1)These components are included in the computation of net pension and post-retirement benefit (credit) charges in Note 4, “Retirement and Post-Retirement Benefit Plans”.

Schedule of Accumulated Other Comprehensive Loss, Net of Taxes

The components of Accumulated other comprehensive loss, net of taxes and changes were as follows:

			Six months ended April 30, 2021
			Net unrealized gains on available-for-sale debt securities						Net unrealized (losses) gains on cash flow hedges						Unrealized components of defined benefit plans						Change in cumulative translation adjustment						Accumulated other comprehensive loss
			In millions
Balance at beginning of period			$	11					$	(66)					$	(1,190)					$	2					$	(1,243)
Other comprehensive income (loss) before reclassifications			3						(347)						30						27						(287)
Reclassifications of losses into earnings			—						177						32						—						209
Reclassifications of settlements into earnings			—						—						1						—						1
Balance at end of period			$	14					$	(236)					$	(1,127)					$	29					$	(1,320)

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669686-108580

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
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-Section 45
-Paragraph 20
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