Stockholders' Deficit (Tables)

6 Months Ended

Apr. 30, 2022

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
	2022		2021		2022		2021
	In millions
Tax effect on change in unrealized components of available-for-sale debt securities:
Tax benefit (provision) on unrealized (losses) gains arising during the period	$	1	$	—	$	1	$	(1)
Tax effect on change in unrealized components of cash flow hedges:
Tax (provision) benefit on unrealized gains (losses) arising during the period	(114)		(7)		(146)		40
Tax provision (benefit) on (gains) losses reclassified into earnings	24		(17)		36		(21)
	(90)		(24)		(110)		19
Tax effect on change in unrealized components of defined benefit plans:
Tax provision on gains arising during the period	—		(11)		(6)		(11)
Tax benefit on amortization of actuarial loss and prior service benefit	(1)		(5)		(2)		(10)
Tax provision on curtailments, settlements and other	(1)		—		(1)		—
	(2)		(16)		(9)		(21)
Tax effect on change in cumulative translation adjustment	1		(1)		2		(6)
Tax provision on other comprehensive income	$	(90)	$	(41)	$	(116)	$	(9)

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
	2022		2021		2022		2021
	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	$	(3)	$	—	$	(5)	$	3
Change in unrealized components of cash flow hedges:
Unrealized gains (losses) arising during the period	489		(28)		756		(347)
(Gains) losses reclassified into earnings	(96)		132		(128)		177
	393		104		628		(170)
Change in unrealized components of defined benefit plans:
Gains arising during the period	1		31		16		30
Amortization of actuarial loss and prior service benefit(1)	4		16		9		32
Curtailments, settlements and other	(1)		—		(1)		1
	4		47		24		63
Change in cumulative translation adjustment	(31)		2		(40)		27
Other comprehensive income (loss), net of taxes	$	363	$	153	$	607	$	(77)

(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 income (loss), net of taxes and changes were as follows:

	Six months ended April 30, 2022
	Net unrealized gains (losses) 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 income (loss)
	In millions
Balance at beginning of period	$	15	$	19	$	(323)	$	29	$	(260)
Other comprehensive (loss) gain before reclassifications	(5)		756		16		(40)		727
Reclassifications of (gain) loss into earnings	—		(128)		9		—		(119)
Reclassifications of settlements into earnings	—		—		(1)		—		(1)
Balance at end of period	$	10	$	647	$	(299)	$	(11)	$	347