Stockholders’ Deficit - Taxes Related to Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Tax (provision) benefit on other comprehensive income (loss)	$ (80)	$ (64)	$ 45
Tax (provision) benefit on change in unrealized gains (losses) on available-for-sale securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Tax benefit (provision) on change arising during the period	1	(1)	(3)
Tax benefit (provision) on change in unrealized components of cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Tax benefit (provision) on change arising during the period	(42)	42	32
Tax (provision) benefit on reclassifications during the period	(26)	(16)	(1)
Tax (provision) benefit on other comprehensive income (loss)	(68)	26	31
Tax (provision) benefit on change in unrealized components of defined benefit plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Tax (provision) benefit on other comprehensive income (loss)	(13)	(89)	17
Tax (provision) benefit on gains (losses) arising during the period
Accumulated Other Comprehensive Income (Loss) [Line Items]
Tax benefit (provision) on change arising during the period	0	(140)	242
Tax provision on amortization of actuarial loss and prior service benefit
Accumulated Other Comprehensive Income (Loss) [Line Items]
Tax (provision) benefit on reclassifications during the period	(11)	(21)	(12)
Tax (provision) benefit on curtailments, settlements and other
Accumulated Other Comprehensive Income (Loss) [Line Items]
Tax (provision) benefit on reclassifications during the period	$ (2)	$ 72	$ (213)

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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