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Stockholders' Deficit - Schedule of Changes and Reclassifications Related to Other Comprehensive (Loss) Income, Net of Taxes (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Apr. 30, 2024	Jan. 31, 2024	Apr. 30, 2023	Jan. 31, 2023	Apr. 30, 2024	Apr. 30, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Unrealized gains (losses) arising during the period					$ 21
Gains (losses) reclassified into earnings					(130)
Other comprehensive income (loss), net of taxes	$ 126	$ (235)	$ 88	$ (741)	(109)	$ (653)
Unrealized gains arising during the period
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Unrealized gains (losses) arising during the period	0		0		4	3
Gains (losses) reclassified into earnings					0
Net unrealized gains (losses) on cash flow hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Unrealized gains (losses) arising during the period	119		(46)		(7)	(563)
Gains (losses) reclassified into earnings	(7)		121		(134)	(135)
Other comprehensive income (loss), net of taxes	112		75		(141)	(698)
Gains arising during the period
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Unrealized gains (losses) arising during the period	18		5		10	4
Amortization of actuarial loss and prior service benefit
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gains (losses) reclassified into earnings	2		0		4	0
Curtailments, settlements and other
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gains (losses) reclassified into earnings	0		(1)		0	0
Change in unrealized components of defined benefit plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Unrealized gains (losses) arising during the period					10
Gains (losses) reclassified into earnings					4
Other comprehensive income (loss), net of taxes	20		4		14	4
Change in cumulative translation adjustment
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Unrealized gains (losses) arising during the period					14
Gains (losses) reclassified into earnings					0
Change in cumulative translation adjustment	$ (6)		$ 9		$ 14	$ 38