Stockholders' Deficit (Tables)

9 Months Ended

Jul. 31, 2020

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 July 31				Nine months ended July 31
	2020		2019		2020		2019
	In millions
Tax effect on change in unrealized components of cash flow hedges:
Tax benefit (provision) on unrealized (losses) gains arising during the period	$	83	$	(7)	$	34	$	(23)
Tax provision on gains reclassified into earnings	25		14		51		34
	108		7		85		11
Tax effect on change in unrealized components of defined benefit plans:
Tax benefit on losses arising during the period	1		4		1		5
Tax provision on amortization of actuarial loss and prior service benefit	(5)		(3)		(15)		(9)
Tax provision on curtailments, settlements and other	—		(79)		—		(78)
	(4)		(78)		(14)		(82)
Tax effect on change in cumulative translation adjustment	—		8		—		6
Tax benefit (provision) on other comprehensive (loss) income	$	104	$	(63)	$	71	$	(65)

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 July 31				Nine months ended July 31
	2020		2019		2020		2019
	In millions
Other comprehensive income (loss), net of taxes:
Change in unrealized components of available-for-sale debt securities:
Unrealized gains arising during the period	$	2	$	—	$	1	$	—
Losses reclassified into earnings	—		—		—		3
	2		—		1		3
Change in unrealized components of cash flow hedges:
Unrealized (losses) gains arising during the period	(480)		173		(238)		248
Gains reclassified into earnings	(105)		(72)		(191)		(225)
	(585)		101		(429)		23
Change in unrealized components of defined benefit plans:
Losses arising during the period	(4)		(12)		(5)		(15)
Amortization of actuarial loss and prior service benefit(1)	15		8		46		25
Curtailments, settlements and other	2		(38)		3		(38)
	13		(42)		44		(28)
Change in cumulative translation adjustment	15		(22)		4		(16)
Other comprehensive (loss) income, net of taxes	$	(555)	$	37	$	(380)	$	(18)

⁽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 AOCI, net of taxes and changes were as follows:

	Nine months ended July 31, 2020
	Net unrealized gains on available-for-sale debt securities		Net unrealized gains (losses) 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	$	9	$	172	$	(1,410)	$	4	$	(1,225)
Other comprehensive income (loss) before reclassifications	1		(238)		(5)		4		(238)
Reclassifications of (gains) losses into earnings	—		(191)		46		—		(145)
Reclassifications of settlements into earnings	—		—		3		—		3
Balance at end of period	$	10	$	(257)	$	(1,366)	$	8	$	(1,605)