Stockholders' Deficit - Schedule of Taxes Related to Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2024	Jul. 31, 2023
Components of accumulated other comprehensive income, net of taxes
Tax benefit on other comprehensive income (loss)	$ 24	$ 3	$ 54	$ 164
Tax provision on unrealized losses arising during the period
Components of accumulated other comprehensive income, net of taxes
Tax benefit (provision) on unrealized (losses) gains arising during the period	(1)	0	(1)	(1)
Net unrealized gains (losses) on cash flow hedges
Components of accumulated other comprehensive income, net of taxes
Tax benefit (provision) on unrealized (losses) gains arising during the period	8	18	12	144
Tax effects on reclassification into earnings	19	(15)	49	22
Tax benefit on other comprehensive income (loss)	27	3	61	166
Tax provision on gains arising during the period
Components of accumulated other comprehensive income, net of taxes
Tax benefit (provision) on unrealized (losses) gains arising during the period	0	0	(3)	(1)
Tax provision on curtailments, settlements and other
Components of accumulated other comprehensive income, net of taxes
Tax effects on reclassification into earnings	(2)	0	(3)	0
Unrealized components of defined benefit plans
Components of accumulated other comprehensive income, net of taxes
Tax benefit on other comprehensive income (loss)	$ (2)	$ 0	$ (6)	$ (1)